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alshabib
54ebd9cc 1 parent db0d03fe

splitting roles from IO loop and providing a abstract of switch

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Showing 37 changed files with 1540 additions and 6105 deletions
......@@ -63,7 +63,7 @@
<configuration>
<instructions>
<Export-Package>
org.projectfloodlight.openflow.*
org.onlab.onos.of.*,org.projectfloodlight.openflow.*
</Export-Package>
</instructions>
</configuration>
......
package org.onlab.onos.of.controller;
/**
* Created by tom on 8/21/14.
*/
public interface DeleteMe {
}
package org.onlab.onos.of.controller.impl.util;
package org.onlab.onos.of.controller;
import org.projectfloodlight.openflow.util.HexString;
......
package org.onlab.onos.of.controller;
import org.projectfloodlight.openflow.protocol.OFMessage;
/**
* Abstraction of an OpenFlow controller. Serves as a one stop
* shop for obtaining OpenFlow devices and (un)register listeners
* on OpenFlow events
*/
public interface OpenFlowController {
/**
* Returns all switches known to this OF controller.
* @return Iterable of dpid elements
*/
public Iterable<OpenFlowSwitch> getSwitches();
/**
* Returns all master switches known to this OF controller.
* @return Iterable of dpid elements
*/
public Iterable<OpenFlowSwitch> getMasterSwitches();
/**
* Returns all equal switches known to this OF controller.
* @return Iterable of dpid elements
*/
public Iterable<OpenFlowSwitch> getEqualSwitches();
/**
* Returns the actual switch for the given Dpid.
* @param dpid the switch to fetch
* @return the interface to this switch
*/
public OpenFlowSwitch getSwitch(Dpid dpid);
/**
* Returns the actual master switch for the given Dpid, if one exists.
* @param dpid the switch to fetch
* @return the interface to this switch
*/
public OpenFlowSwitch getMasterSwitch(Dpid dpid);
/**
* Returns the actual equal switch for the given Dpid, if one exists.
* @param dpid the switch to fetch
* @return the interface to this switch
*/
public OpenFlowSwitch getEqualSwitch(Dpid dpid);
/**
* Register a listener for meta events that occur to OF
* devices.
* @param listener the listener to notify
*/
public void addListener(OpenFlowSwitchListener listener);
/**
* Unregister a listener.
*
* @param listener the listener to unregister
*/
public void removeListener(OpenFlowSwitchListener listener);
/**
* Register a listener for packet events.
* @param priority the importance of this listener, lower values are more important
* @param listener the listener to notify
*/
public void addPacketListener(int priority, PacketListener listener);
/**
* Unregister a listener.
*
* @param listener the listener to unregister
*/
public void removePacketListener(PacketListener listener);
/**
* Send a message to a particular switch.
* @param dpid the switch to send to.
* @param msg the message to send
*/
public void write(Dpid dpid, OFMessage msg);
/**
* Process a message and notify the appropriate listeners.
*
* @param msg the message to process.
*/
public void processPacket(OFMessage msg);
/**
* Sets the role for a given switch.
* @param role the desired role
* @param dpid the switch to set the role for.
*/
public void setRole(Dpid dpid, RoleState role);
}
package org.onlab.onos.of.controller;
import org.projectfloodlight.openflow.protocol.OFMessage;
/**
* Abstract model of an OpenFlow Switch.
*
*/
public interface OpenFlowSwitch {
/**
* Writes the message to this switch.
*
* @param msg the message to write
*/
public void write(OFMessage msg);
/**
* Handle a message from the switch.
* @param fromSwitch the message to handle
*/
public void handleMessage(OFMessage fromSwitch);
}
package org.onlab.onos.of.controller;
/**
* Meta events that can happen at a switch.
*
*/
public enum OpenFlowSwitchEvent {
/**
* The switch connected.
*/
SWITCH_CONNECTED,
/**
* The switch disconnected.
*/
SWITCH_DISCONNECTED
}
package org.onlab.onos.of.controller;
/**
* Allows for providers interested in Switch events to be notified.
*/
public interface OpenFlowSwitchListener {
/**
* Notify that the switch was added.
* @param dpid the switch where the event occurred
*/
public void switchAdded(Dpid dpid);
/**
* Notify that the switch was removed.
* @param dpid the switch where the event occurred.
*/
public void switchRemoved(Dpid dpid);
}
package org.onlab.onos.of.controller;
import org.projectfloodlight.openflow.types.OFPort;
/**
* A representation of a packet context which allows any provider
* to view the packet in event but may block the response to the
* event if blocked has been called.
*/
public interface PacketContext {
//TODO: may want to support sending packet out other switches than
// the one it came in on.
/**
* Blocks further responses (ie. send() calls) on this
* packet in event.
*/
public void block();
/**
* Provided build has been called send the packet
* out the switch it came in on.
*/
public void send();
/**
* Build the packet out in response to this packet in event.
* @param outPort the out port to send to packet out of.
*/
public void build(OFPort outPort);
/**
* Build the packet out in response to this packet in event.
* @param ethFrame the actual packet to send out.
* @param outPort the out port to send to packet out of.
*/
public void build(Object ethFrame, OFPort outPort);
/**
* Provided a handle onto the parsed payload.
* @return the parsed form of the payload.
*/
public Object parsed();
/**
* Provide the dpid of the switch where the packet in arrived.
* @return the dpid of the switch.
*/
public Dpid dpid();
}
package org.onlab.onos.of.controller;
/**
* Notifies providers about Packet in events.
*/
public interface PacketListener {
/**
* Handle the packet.
* @param pktCtx the packet context ({@link }
*/
public void handlePacket(PacketContext pktCtx);
}
package org.onlab.onos.of.controller.impl;
package org.onlab.onos.of.controller;
import org.projectfloodlight.openflow.protocol.OFControllerRole;
......@@ -10,27 +10,14 @@ import org.projectfloodlight.openflow.protocol.OFControllerRole;
* to the OF1.3 enum, before role messages are sent to the switch.
* See sendRoleRequestMessage method in OFSwitchImpl
*/
public enum Role {
public enum RoleState {
EQUAL(OFControllerRole.ROLE_EQUAL),
MASTER(OFControllerRole.ROLE_MASTER),
SLAVE(OFControllerRole.ROLE_SLAVE);
private Role(OFControllerRole nxRole) {
private RoleState(OFControllerRole nxRole) {
nxRole.ordinal();
}
/*
private static Map<Integer,Role> nxRoleToEnum
= new HashMap<Integer,Role>();
static {
for(Role r: Role.values())
nxRoleToEnum.put(r.toNxRole(), r);
}
public int toNxRole() {
return nxRole;
}
// Return the enum representing the given nxRole or null if no
// such role exists
public static Role fromNxRole(int nxRole) {
return nxRoleToEnum.get(nxRole);
}*/
}
......
......@@ -38,6 +38,10 @@
</properties>
<dependencies>
<dependency>
<groupId>org.onlab.onos</groupId>
<artifactId>onos-of-api</artifactId>
</dependency>
<!-- ONOS's direct dependencies -->
<dependency>
<groupId>org.apache.felix</groupId>
......
/**
* Copyright 2011, Big Switch Networks, Inc.
* Originally created by David Erickson, Stanford University
*
* Licensed under the Apache License, Version 2.0 (the "License"); you may
* not use this file except in compliance with the License. You may obtain
* a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
* WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
* License for the specific language governing permissions and limitations
* under the License.
**/
package org.onlab.onos.of.controller.impl;
import java.io.IOException;
import java.util.Collection;
import java.util.Date;
import java.util.List;
import java.util.Map;
import java.util.Set;
import java.util.concurrent.Future;
import org.onlab.onos.of.controller.impl.debugcounter.IDebugCounterService;
import org.onlab.onos.of.controller.impl.debugcounter.IDebugCounterService.CounterException;
import org.onlab.onos.of.controller.impl.util.OrderedCollection;
import org.jboss.netty.channel.Channel;
import org.projectfloodlight.openflow.protocol.OFActionType;
import org.projectfloodlight.openflow.protocol.OFCapabilities;
import org.projectfloodlight.openflow.protocol.OFDescStatsReply;
import org.projectfloodlight.openflow.protocol.OFFeaturesReply;
import org.projectfloodlight.openflow.protocol.OFMessage;
import org.projectfloodlight.openflow.protocol.OFPortDesc;
import org.projectfloodlight.openflow.protocol.OFPortDescStatsReply;
import org.projectfloodlight.openflow.protocol.OFPortStatus;
import org.projectfloodlight.openflow.protocol.OFStatsReply;
import org.projectfloodlight.openflow.protocol.OFStatsRequest;
import org.projectfloodlight.openflow.protocol.OFVersion;
import org.projectfloodlight.openflow.types.U64;
public interface IOFSwitch {
/**
* OF1.3 switches should support role-request messages as in the 1.3 spec.
* OF1.0 switches may or may not support the Nicira role request extensions.
* To indicate the support, this property should be set by the associated
* OF1.0 switch driver in the net.onrc.onos.core.drivermanager package.
* The property will be ignored for OF1.3 switches.
*/
public static final String SWITCH_SUPPORTS_NX_ROLE = "supportsNxRole";
//************************
// Channel related
//************************
/**
* Disconnects the switch by closing the TCP connection. Results in a call
* to the channel handler's channelDisconnected method for cleanup
* @throws IOException
*/
public void disconnectSwitch();
/**
* Writes to the OFMessage to the output stream.
*
* @param m
* @throws IOException
*/
public void write(OFMessage m) throws IOException;
/**
* Writes the list of messages to the output stream.
*
* @param msglist
* @throws IOException
*/
public void write(List<OFMessage> msglist) throws IOException;
/**
* Gets the date the switch connected to this controller.
*
* @return the date
*/
public Date getConnectedSince();
/**
* Gets the next available transaction id.
*
* @return the next transaction ID
*/
public int getNextTransactionId();
/**
* Checks if the switch is still connected.
* Only call while holding processMessageLock
*
* @return whether the switch is still disconnected
*/
public boolean isConnected();
/**
* Sets whether the switch is connected.
* Only call while holding modifySwitchLock
*
* @param connected whether the switch is connected
*/
public void setConnected(boolean connected);
/**
* Flushes all flows queued for this switch in the current thread.
* NOTE: The contract is limited to the current thread
*/
public void flush();
/**
* Sets the Netty Channel this switch instance is associated with.
* <p>
* Called immediately after instantiation
*
* @param channel the channel
*/
public void setChannel(Channel channel);
//************************
// Switch features related
//************************
/**
* Gets the datapathId of the switch.
*
* @return the switch buffers
*/
public long getId();
/**
* Gets a string version of the ID for this switch.
*
* @return string version of the ID
*/
public String getStringId();
/**
* Gets the number of buffers.
*
* @return the number of buffers
*/
public int getNumBuffers();
public Set<OFCapabilities> getCapabilities();
public byte getNumTables();
/**
* Returns an OFDescStatsReply message object. Use the methods contained
* to retrieve switch descriptions for Manufacturer, Hw/Sw version etc.
*/
public OFDescStatsReply getSwitchDescription();
/**
* Cancel features reply with a specific transaction ID.
* @param transactionId the transaction ID
*/
public void cancelFeaturesReply(int transactionId);
/**
* Gets the OFActionType set.
* <p>
* getActions has relevance only for an OpenFlow 1.0 switch.
* For OF1.3, each table can support different actions
*
* @return the action set
*/
public Set<OFActionType> getActions();
public void setOFVersion(OFVersion ofv);
public OFVersion getOFVersion();
//************************
// Switch port related
//************************
/**
* the type of change that happened to an open flow port.
*/
public enum PortChangeType {
/** Either a new port has been added by the switch, or we are
* adding a port we just deleted (via a prior notification) due to
* a change in the portNumber-portName mapping.
*/
ADD,
/** some other feature of the port has changed (eg. speed)*/
OTHER_UPDATE,
/** Either a port has been deleted by the switch, or we are deleting
* a port whose portNumber-portName mapping has changed. Note that in
* the latter case, a subsequent notification will be sent out to add a
* port with the new portNumber-portName mapping.
*/
DELETE,
/** Port is up (i.e. enabled). Presumably an earlier notification had
* indicated that it was down. To be UP implies that the port is
* administratively considered UP (see ofp_port_config) AND the port
* link is up AND the port is no longer blocked (see ofp_port_state).
*/
UP,
/** Port is down (i.e. disabled). Presumably an earlier notification had
* indicated that it was up, or the port was always up.
* To be DOWN implies that the port has been either
* administratively brought down (see ofp_port_config) OR the port
* link is down OR the port is blocked (see ofp_port_state).
*/
DOWN,
}
/**
* Describes a change of an open flow port.
*/
public static class PortChangeEvent {
public final OFPortDesc port;
public final PortChangeType type;
/**
* @param port
* @param type
*/
public PortChangeEvent(OFPortDesc port,
PortChangeType type) {
this.port = port;
this.type = type;
}
/* (non-Javadoc)
* @see java.lang.Object#hashCode()
*/
@Override
public int hashCode() {
final int prime = 31;
int result = 1;
result = prime * result + ((port == null) ? 0 : port.hashCode());
result = prime * result + ((type == null) ? 0 : type.hashCode());
return result;
}
/* (non-Javadoc)
* @see java.lang.Object#equals(java.lang.Object)
*/
@Override
public boolean equals(Object obj) {
if (this == obj) {
return true;
}
if (obj == null) {
return false;
}
if (getClass() != obj.getClass()) {
return false;
}
PortChangeEvent other = (PortChangeEvent) obj;
if (port == null) {
if (other.port != null) {
return false;
}
} else if (!port.equals(other.port)) {
return false;
}
if (type != other.type) {
return false;
}
return true;
}
/* (non-Javadoc)
* @see java.lang.Object#toString()
*/
@Override
public String toString() {
return "[" + type + " " + port.toString() + "]";
}
}
/**
* Get list of all enabled ports. This will typically be different from
* the list of ports in the OFFeaturesReply, since that one is a static
* snapshot of the ports at the time the switch connected to the controller
* whereas this port list also reflects the port status messages that have
* been received.
*
* @return Unmodifiable list of ports not backed by the underlying collection
*/
public Collection<OFPortDesc> getEnabledPorts();
/**
* Get list of the port numbers of all enabled ports. This will typically
* be different from the list of ports in the OFFeaturesReply, since that
* one is a static snapshot of the ports at the time the switch connected
* to the controller whereas this port list also reflects the port status
* messages that have been received.
*
* @return Unmodifiable list of ports not backed by the underlying collection
*/
public Collection<Integer> getEnabledPortNumbers();
/**
* Retrieve the port object by the port number. The port object
* is the one that reflects the port status updates that have been
* received, not the one from the features reply.
*
* @param portNumber
* @return port object
*/
public OFPortDesc getPort(int portNumber);
/**
* Retrieve the port object by the port name. The port object
* is the one that reflects the port status updates that have been
* received, not the one from the features reply.
*
* @param portName
* @return port object
*/
public OFPortDesc getPort(String portName);
/**
* Add or modify a switch port. This is called by the core controller
* code in response to a OFPortStatus message.
*
* OFPPR_MODIFY and OFPPR_ADD will be treated as equivalent. The OpenFlow
* spec is not clear on whether portNames are portNumbers are considered
* authoritative identifiers. We treat portNames <-> portNumber mappings
* as fixed. If they change, we delete all previous conflicting ports and
* add all new ports.
*
* @param ps the port status message
* @return the ordered Collection of changes "applied" to the old ports
* of the switch according to the PortStatus message. A single PortStatus
* message can result in multiple changes.
* If portName <-> portNumber mappings have
* changed, the iteration order ensures that delete events for old
* conflicting appear before before events adding new ports
*/
public OrderedCollection<PortChangeEvent> processOFPortStatus(OFPortStatus ps);
/**
* Get list of all ports. This will typically be different from
* the list of ports in the OFFeaturesReply, since that one is a static
* snapshot of the ports at the time the switch connected to the controller
* whereas this port list also reflects the port status messages that have
* been received.
*
* @return Unmodifiable list of ports
*/
public Collection<OFPortDesc> getPorts();
/**
* @param portName
* @return Whether a port is enabled per latest port status message
* (not configured down nor link down nor in spanning tree blocking state)
*/
public boolean portEnabled(int portName);
/**
* @param portName
* @return Whether a port is enabled per latest port status message
* (not configured down nor link down nor in spanning tree blocking state)
*/
public boolean portEnabled(String portName);
/**
* Compute the changes that would be required to replace the old ports
* of this switch with the new ports.
* @param ports new ports to set
* @return the ordered collection of changes "applied" to the old ports
* of the switch in order to set them to the new set.
* If portName <-> portNumber mappings have
* changed, the iteration order ensures that delete events for old
* conflicting appear before before events adding new ports
*/
public OrderedCollection<PortChangeEvent>
comparePorts(Collection<OFPortDesc> ports);
/**
* Replace the ports of this switch with the given ports.
* @param ports new ports to set
* @return the ordered collection of changes "applied" to the old ports
* of the switch in order to set them to the new set.
* If portName <-> portNumber mappings have
* changed, the iteration order ensures that delete events for old
* conflicting appear before before events adding new ports
*/
public OrderedCollection<PortChangeEvent>
setPorts(Collection<OFPortDesc> ports);
//*******************************************
// IOFSwitch object attributes
//************************
/**
* Gets attributes of this switch.
*
* @return attributes of the switch
*/
public Map<Object, Object> getAttributes();
/**
* Checks if a specific switch property exists for this switch.
*
* @param name name of property
* @return value for name
*/
boolean hasAttribute(String name);
/**
* Gets properties for switch specific behavior.
*
* @param name name of property
* @return 'value' for 'name', or null if no entry for 'name' exists
*/
Object getAttribute(String name);
/**
* Sets properties for switch specific behavior.
*
* @param name name of property
* @param value value for name
*/
void setAttribute(String name, Object value);
/**
* Removes properties for switch specific behavior.
*
* @param name name of property
* @return current value for name or null (if not present)
*/
Object removeAttribute(String name);
//************************
// Switch statistics
//************************
/**
* Delivers the statistics future reply.
*
* @param reply the reply to deliver
*/
public void deliverStatisticsReply(OFMessage reply);
/**
* Cancels the statistics reply with the given transaction ID.
*
* @param transactionId the transaction ID
*/
public void cancelStatisticsReply(int transactionId);
/**
* Cancels all statistics replies.
*/
public void cancelAllStatisticsReplies();
/**
* Gets a Future object that can be used to retrieve the asynchronous.
* OFStatisticsReply when it is available.
*
* @param request statistics request
* @return Future object wrapping OFStatisticsReply
* @throws IOException
*/
public Future<List<OFStatsReply>> getStatistics(OFStatsRequest<?> request)
throws IOException;
//************************
// Switch other utilities
//************************
/**
* Clears all flowmods on this switch.
*/
public void clearAllFlowMods();
/**
* Gets the current role of this controller for this IOFSwitch.
*/
public Role getRole();
/**
* Sets this controller's Role for this IOFSwitch to role.
*
* @param role
*/
public void setRole(Role role);
/**
* Gets the next generation ID.
* <p>
* Note: relevant for role request messages in OF1.3
*
* @return next generation ID
*/
public U64 getNextGenerationId();
/**
* Set debug counter service for per-switch counters.
* Called immediately after instantiation.
* @param debugCounter
* @throws CounterException
*/
public void setDebugCounterService(IDebugCounterService debugCounter)
throws CounterException;
/**
* Start this switch driver's sub handshake. This might be a no-op but
* this method must be called at least once for the switch to be become
* ready.
* This method must only be called from the I/O thread
* @throws IOException
* @throws org.onlab.onos.of.controller.impl.internal.SwitchDriverSubHandshakeAlreadyStarted
* if the sub-handshake has
* already been started
*/
public void startDriverHandshake() throws IOException;
/**
* Check if the sub-handshake for this switch driver has been completed.
* This method can only be called after startDriverHandshake()
*
* This methods must only be called from the I/O thread
* @return true if the sub-handshake has been completed. False otherwise
* @throws org.onlab.onos.of.controller.impl.internal.SwitchDriverSubHandshakeNotStarted
* if startDriverHandshake() has
* not been called yet.
*/
public boolean isDriverHandshakeComplete();
/**
* Pass the given OFMessage to the driver as part of this driver's
* sub-handshake. Must not be called after the handshake has been completed
* This methods must only be called from the I/O thread
* @param m The message that the driver should process
* @throws org.onlab.onos.of.controller.impl.internal.SwitchDriverSubHandshakeCompleted
* if isDriverHandshake() returns
* false before this method call
* @throws org.onlab.onos.of.controller.impl.internal.SwitchDriverSubHandshakeNotStarted
* if startDriverHandshake() has
* not been called yet.
*/
public void processDriverHandshakeMessage(OFMessage m);
/**
* Set the flow table full flag in the switch.
* XXX S Rethink this for multiple tables
*/
public void setTableFull(boolean isFull);
/**
* Save the features reply for this switch.
*
* @param featuresReply
*/
public void setFeaturesReply(OFFeaturesReply featuresReply);
/**
* Save the portset for this switch.
*
* @param portDescReply
*/
public void setPortDescReply(OFPortDescStatsReply portDescReply);
//************************
// Message handling
//************************
/**
* Handle the message coming from the dataplane.
*
* @param m the actual message
*/
public void handleMessage(OFMessage m);
}
package org.onlab.onos.of.controller.impl.debugcounter;
import java.util.ArrayList;
import java.util.Arrays;
import java.util.Collections;
import java.util.HashSet;
import java.util.List;
import java.util.Map;
import java.util.Set;
import java.util.concurrent.ConcurrentHashMap;
import java.util.concurrent.atomic.AtomicInteger;
import java.util.concurrent.atomic.AtomicLong;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import com.google.common.collect.Sets;
/**
* This class implements a central store for all counters used for debugging the
* system. For counters based on traffic-type, see ICounterStoreService.
*
*/
//CHECKSTYLE:OFF
public class DebugCounter implements IDebugCounterService {
protected static final Logger log = LoggerFactory.getLogger(DebugCounter.class);
/**
* registered counters need a counter id.
*/
protected AtomicInteger counterIdCounter = new AtomicInteger();
/**
* The counter value.
*/
protected static class MutableLong {
long value = 0;
public void increment() { value += 1; }
public void increment(long incr) { value += incr; }
public long get() { return value; }
public void set(long val) { value = val; }
}
/**
* protected class to store counter information.
*/
public static class CounterInfo {
String moduleCounterHierarchy;
String counterDesc;
CounterType ctype;
String moduleName;
String counterHierarchy;
int counterId;
boolean enabled;
String[] metaData;
public CounterInfo(int counterId, boolean enabled,
String moduleName, String counterHierarchy,
String desc, CounterType ctype, String... metaData) {
this.moduleCounterHierarchy = moduleName + "/" + counterHierarchy;
this.moduleName = moduleName;
this.counterHierarchy = counterHierarchy;
this.counterDesc = desc;
this.ctype = ctype;
this.counterId = counterId;
this.enabled = enabled;
this.metaData = metaData;
}
public String getModuleCounterHierarchy() { return moduleCounterHierarchy; }
public String getCounterDesc() { return counterDesc; }
public CounterType getCtype() { return ctype; }
public String getModuleName() { return moduleName; }
public String getCounterHierarchy() { return counterHierarchy; }
public int getCounterId() { return counterId; }
public boolean isEnabled() { return enabled; }
public String[] getMetaData() { return this.metaData.clone(); }
}
//******************
// Global stores
//******************
/**
* Counter info for a debug counter.
*/
public static class DebugCounterInfo {
CounterInfo cinfo;
AtomicLong cvalue;
public DebugCounterInfo(CounterInfo cinfo) {
this.cinfo = cinfo;
this.cvalue = new AtomicLong();
}
public CounterInfo getCounterInfo() {
return cinfo;
}
public Long getCounterValue() {
return cvalue.get();
}
}
/**
* Global debug-counter storage across all threads. These are
* updated from the local per thread counters by the flush counters method.
*/
private static final DebugCounterInfo[] ALLCOUNTERS =
new DebugCounterInfo[MAX_COUNTERS];
/**
* per module counters, indexed by the module name and storing three levels
* of Counter information in the form of CounterIndexStore.
*/
protected ConcurrentHashMap<String, ConcurrentHashMap<String, CounterIndexStore>>
moduleCounters = new ConcurrentHashMap<String,
ConcurrentHashMap<String,
CounterIndexStore>>();
protected static class CounterIndexStore {
int index;
Map<String, CounterIndexStore> nextLevel;
public CounterIndexStore(int index, Map<String, CounterIndexStore> cis) {
this.index = index;
this.nextLevel = cis;
}
}
/**
* fast global cache for counter ids that are currently active.
*/
protected Set<Integer> currentCounters = Collections.newSetFromMap(
new ConcurrentHashMap<Integer, Boolean>());
//******************
// Thread local stores
//******************
/**
* Thread local storage of counter info.
*/
protected static class LocalCounterInfo {
boolean enabled;
MutableLong cvalue;
public LocalCounterInfo(boolean enabled) {
this.enabled = enabled;
this.cvalue = new MutableLong();
}
}
/**
* Thread local debug counters used for maintaining counters local to a thread.
*/
protected final ThreadLocal<LocalCounterInfo[]> threadlocalCounters =
new ThreadLocal<LocalCounterInfo[]>() {
@Override
protected LocalCounterInfo[] initialValue() {
return new LocalCounterInfo[MAX_COUNTERS];
}
};
/**
* Thread local cache for counter ids that are currently active.
*/
protected final ThreadLocal<Set<Integer>> threadlocalCurrentCounters =
new ThreadLocal<Set<Integer>>() {
@Override
protected Set<Integer> initialValue() {
return new HashSet<Integer>();
}
};
//*******************************
// IDebugCounter
//*******************************
protected class CounterImpl implements IDebugCounter {
private final int counterId;
public CounterImpl(int counterId) {
this.counterId = counterId;
}
@Override
public void updateCounterWithFlush() {
if (!validCounterId()) {
return;
}
updateCounter(counterId, 1, true);
}
@Override
public void updateCounterNoFlush() {
if (!validCounterId()) {
return;
}
updateCounter(counterId, 1, false);
}
@Override
public void updateCounterWithFlush(int incr) {
if (!validCounterId()) {
return;
}
updateCounter(counterId, incr, true);
}
@Override
public void updateCounterNoFlush(int incr) {
if (!validCounterId()) {
return;
}
updateCounter(counterId, incr, false);
}
@Override
public long getCounterValue() {
if (!validCounterId()) {
return -1;
}
return ALLCOUNTERS[counterId].cvalue.get();
}
/**
* Checks if this is a valid counter.
* @return true if the counter id is valid
*/
private boolean validCounterId() {
if (counterId < 0 || counterId >= MAX_COUNTERS) {
log.error("Invalid counterId invoked");
return false;
}
return true;
}
}
//*******************************
// IDebugCounterService
//*******************************
@Override
public IDebugCounter registerCounter(String moduleName, String counterHierarchy,
String counterDescription, CounterType counterType,
String... metaData)
throws CounterException {
// check if counter already exists
if (!moduleCounters.containsKey(moduleName)) {
moduleCounters.putIfAbsent(moduleName,
new ConcurrentHashMap<String, CounterIndexStore>());
}
RetCtrInfo rci = getCounterId(moduleName, counterHierarchy);
if (rci.allLevelsFound) {
// counter exists
log.info("Counter exists for {}/{} -- resetting counters", moduleName,
counterHierarchy);
resetCounterHierarchy(moduleName, counterHierarchy);
return new CounterImpl(rci.ctrIds[rci.foundUptoLevel - 1]);
}
// check for validity of counter
if (rci.levels.length > MAX_HIERARCHY) {
String err = "Registry of counterHierarchy " + counterHierarchy +
" exceeds max hierachy " + MAX_HIERARCHY + ".. aborting";
throw new MaxHierarchyRegistered(err);
}
if (rci.foundUptoLevel < rci.levels.length - 1) {
StringBuilder sb = new StringBuilder();
for (int i = 0; i <= rci.foundUptoLevel; i++) {
sb.append(rci.levels[i]);
}
String needToRegister = sb.toString();
String err = "Attempting to register hierarchical counterHierarchy " +
counterHierarchy + " but parts of hierarchy missing. " +
"Please register " + needToRegister + " first";
throw new MissingHierarchicalLevel(err);
}
// get a new counter id
int counterId = counterIdCounter.getAndIncrement();
if (counterId >= MAX_COUNTERS) {
throw new MaxCountersRegistered("max counters reached");
}
// create storage for counter
boolean enabled = (counterType == CounterType.ALWAYS_COUNT) ? true : false;
CounterInfo ci = new CounterInfo(counterId, enabled, moduleName,
counterHierarchy, counterDescription,
counterType, metaData);
ALLCOUNTERS[counterId] = new DebugCounterInfo(ci);
// account for the new counter in the module counter hierarchy
addToModuleCounterHierarchy(moduleName, counterId, rci);
// finally add to active counters
if (enabled) {
currentCounters.add(counterId);
}
return new CounterImpl(counterId);
}
private void updateCounter(int counterId, int incr, boolean flushNow) {
if (counterId < 0 || counterId >= MAX_COUNTERS) {
return;
}
LocalCounterInfo[] thiscounters = this.threadlocalCounters.get();
if (thiscounters[counterId] == null) {
// seeing this counter for the first time in this thread - create local
// store by consulting global store
DebugCounterInfo dc = ALLCOUNTERS[counterId];
if (dc != null) {
thiscounters[counterId] = new LocalCounterInfo(dc.cinfo.enabled);
if (dc.cinfo.enabled) {
Set<Integer> thisset = this.threadlocalCurrentCounters.get();
thisset.add(counterId);
}
} else {
log.error("updateCounter seen locally for counter {} but no global"
+ "storage exists for it yet .. not updating", counterId);
return;
}
}
// update local store if enabled locally for updating
LocalCounterInfo lc = thiscounters[counterId];
if (lc.enabled) {
lc.cvalue.increment(incr);
if (flushNow) {
DebugCounterInfo dc = ALLCOUNTERS[counterId];
if (dc.cinfo.enabled) {
// globally enabled - flush now
dc.cvalue.addAndGet(lc.cvalue.get());
lc.cvalue.set(0);
} else {
// global counter is disabled - don't flush, disable locally
lc.enabled = false;
Set<Integer> thisset = this.threadlocalCurrentCounters.get();
thisset.remove(counterId);
}
}
}
}
@Override
public void flushCounters() {
LocalCounterInfo[] thiscounters = this.threadlocalCounters.get();
Set<Integer> thisset = this.threadlocalCurrentCounters.get();
ArrayList<Integer> temp = new ArrayList<Integer>();
for (int counterId : thisset) {
LocalCounterInfo lc = thiscounters[counterId];
if (lc.cvalue.get() > 0) {
DebugCounterInfo dc = ALLCOUNTERS[counterId];
if (dc.cinfo.enabled) {
// globally enabled - flush now
dc.cvalue.addAndGet(lc.cvalue.get());
lc.cvalue.set(0);
} else {
// global counter is disabled - don't flush, disable locally
lc.enabled = false;
temp.add(counterId);
}
}
}
for (int cId : temp) {
thisset.remove(cId);
}
// At this point it is possible that the thread-local set does not
// include a counter that has been enabled and is present in the global set.
// We need to sync thread-local currently enabled set of counterIds with
// the global set.
Sets.SetView<Integer> sv = Sets.difference(currentCounters, thisset);
for (int counterId : sv) {
if (thiscounters[counterId] != null) {
thiscounters[counterId].enabled = true;
thisset.add(counterId);
}
}
}
@Override
public void resetCounterHierarchy(String moduleName, String counterHierarchy) {
RetCtrInfo rci = getCounterId(moduleName, counterHierarchy);
if (!rci.allLevelsFound) {
String missing = rci.levels[rci.foundUptoLevel];
log.error("Cannot reset counter hierarchy - missing counter {}", missing);
return;
}
// reset at this level
ALLCOUNTERS[rci.ctrIds[rci.foundUptoLevel - 1]].cvalue.set(0);
// reset all levels below
ArrayList<Integer> resetIds = getHierarchyBelow(moduleName, rci);
for (int index : resetIds) {
ALLCOUNTERS[index].cvalue.set(0);
}
}
@Override
public void resetAllCounters() {
RetCtrInfo rci = new RetCtrInfo();
rci.levels = "".split("/");
for (String moduleName : moduleCounters.keySet()) {
ArrayList<Integer> resetIds = getHierarchyBelow(moduleName, rci);
for (int index : resetIds) {
ALLCOUNTERS[index].cvalue.set(0);
}
}
}
@Override
public void resetAllModuleCounters(String moduleName) {
Map<String, CounterIndexStore> target = moduleCounters.get(moduleName);
RetCtrInfo rci = new RetCtrInfo();
rci.levels = "".split("/");
if (target != null) {
ArrayList<Integer> resetIds = getHierarchyBelow(moduleName, rci);
for (int index : resetIds) {
ALLCOUNTERS[index].cvalue.set(0);
}
} else {
if (log.isDebugEnabled()) {
log.debug("No module found with name {}", moduleName);
}
}
}
@Override
public void enableCtrOnDemand(String moduleName, String counterHierarchy) {
RetCtrInfo rci = getCounterId(moduleName, counterHierarchy);
if (!rci.allLevelsFound) {
String missing = rci.levels[rci.foundUptoLevel];
log.error("Cannot enable counter - counter not found {}", missing);
return;
}
// enable specific counter
DebugCounterInfo dc = ALLCOUNTERS[rci.ctrIds[rci.foundUptoLevel - 1]];
dc.cinfo.enabled = true;
currentCounters.add(dc.cinfo.counterId);
}
@Override
public void disableCtrOnDemand(String moduleName, String counterHierarchy) {
RetCtrInfo rci = getCounterId(moduleName, counterHierarchy);
if (!rci.allLevelsFound) {
String missing = rci.levels[rci.foundUptoLevel];
log.error("Cannot disable counter - counter not found {}", missing);
return;
}
// disable specific counter
DebugCounterInfo dc = ALLCOUNTERS[rci.ctrIds[rci.foundUptoLevel - 1]];
if (dc.cinfo.ctype == CounterType.COUNT_ON_DEMAND) {
dc.cinfo.enabled = false;
dc.cvalue.set(0);
currentCounters.remove(dc.cinfo.counterId);
}
}
@Override
public List<DebugCounterInfo> getCounterHierarchy(String moduleName,
String counterHierarchy) {
RetCtrInfo rci = getCounterId(moduleName, counterHierarchy);
if (!rci.allLevelsFound) {
String missing = rci.levels[rci.foundUptoLevel];
log.error("Cannot fetch counter - counter not found {}", missing);
return Collections.emptyList();
}
ArrayList<DebugCounterInfo> dcilist = new ArrayList<DebugCounterInfo>();
// get counter and all below it
DebugCounterInfo dc = ALLCOUNTERS[rci.ctrIds[rci.foundUptoLevel - 1]];
dcilist.add(dc);
ArrayList<Integer> belowIds = getHierarchyBelow(moduleName, rci);
for (int index : belowIds) {
dcilist.add(ALLCOUNTERS[index]);
}
return dcilist;
}
@Override
public List<DebugCounterInfo> getAllCounterValues() {
List<DebugCounterInfo> dcilist = new ArrayList<DebugCounterInfo>();
RetCtrInfo rci = new RetCtrInfo();
rci.levels = "".split("/");
for (String moduleName : moduleCounters.keySet()) {
ArrayList<Integer> resetIds = getHierarchyBelow(moduleName, rci);
for (int index : resetIds) {
dcilist.add(ALLCOUNTERS[index]);
}
}
return dcilist;
}
@Override
public List<DebugCounterInfo> getModuleCounterValues(String moduleName) {
List<DebugCounterInfo> dcilist = new ArrayList<DebugCounterInfo>();
RetCtrInfo rci = new RetCtrInfo();
rci.levels = "".split("/");
if (moduleCounters.containsKey(moduleName)) {
ArrayList<Integer> resetIds = getHierarchyBelow(moduleName, rci);
for (int index : resetIds) {
dcilist.add(ALLCOUNTERS[index]);
}
}
return dcilist;
}
@Override
public boolean containsModuleCounterHierarchy(String moduleName,
String counterHierarchy) {
if (!moduleCounters.containsKey(moduleName)) {
return false;
}
RetCtrInfo rci = getCounterId(moduleName, counterHierarchy);
return rci.allLevelsFound;
}
@Override
public boolean containsModuleName(String moduleName) {
return (moduleCounters.containsKey(moduleName)) ? true : false;
}
@Override
public List<String> getModuleList() {
List<String> retval = new ArrayList<String>();
retval.addAll(moduleCounters.keySet());
return retval;
}
@Override
public List<String> getModuleCounterList(String moduleName) {
if (!moduleCounters.containsKey(moduleName)) {
return Collections.emptyList();
}
List<String> retval = new ArrayList<String>();
RetCtrInfo rci = new RetCtrInfo();
rci.levels = "".split("/");
ArrayList<Integer> cids = getHierarchyBelow(moduleName, rci);
for (int index : cids) {
retval.add(ALLCOUNTERS[index].cinfo.counterHierarchy);
}
return retval;
}
//*******************************
// Internal Methods
//*******************************
protected class RetCtrInfo {
boolean allLevelsFound; // counter indices found all the way down the hierarchy
boolean hierarchical; // true if counterHierarchy is hierarchical
int foundUptoLevel;
int[] ctrIds;
String[] levels;
public RetCtrInfo() {
ctrIds = new int[MAX_HIERARCHY];
for (int i = 0; i < MAX_HIERARCHY; i++) {
ctrIds[i] = -1;
}
}
@Override
public int hashCode() {
final int prime = 31;
int result = 1;
result = prime * result + getOuterType().hashCode();
result = prime * result + (allLevelsFound ? 1231 : 1237);
result = prime * result + Arrays.hashCode(ctrIds);
result = prime * result + foundUptoLevel;
result = prime * result + (hierarchical ? 1231 : 1237);
result = prime * result + Arrays.hashCode(levels);
return result;
}
@Override
public boolean equals(Object oth) {
if (!(oth instanceof RetCtrInfo)) {
return false;
}
RetCtrInfo other = (RetCtrInfo) oth;
if (other.allLevelsFound != this.allLevelsFound) {
return false;
}
if (other.hierarchical != this.hierarchical) {
return false;
}
if (other.foundUptoLevel != this.foundUptoLevel) {
return false;
}
if (!Arrays.equals(other.ctrIds, this.ctrIds)) {
return false;
}
if (!Arrays.equals(other.levels, this.levels)) {
return false;
}
return true;
}
private DebugCounter getOuterType() {
return DebugCounter.this;
}
}
protected RetCtrInfo getCounterId(String moduleName, String counterHierarchy) {
RetCtrInfo rci = new RetCtrInfo();
Map<String, CounterIndexStore> templevel = moduleCounters.get(moduleName);
rci.levels = counterHierarchy.split("/");
if (rci.levels.length > 1) {
rci.hierarchical = true;
}
if (templevel == null) {
log.error("moduleName {} does not exist in debugCounters", moduleName);
return rci;
}
/*
if (rci.levels.length > MAX_HIERARCHY) {
// chop off all array elems greater that MAX_HIERARCHY
String[] temp = new String[MAX_HIERARCHY];
System.arraycopy(rci.levels, 0, temp, 0, MAX_HIERARCHY);
rci.levels = temp;
}
*/
for (int i = 0; i < rci.levels.length; i++) {
if (templevel != null) {
CounterIndexStore cis = templevel.get(rci.levels[i]);
if (cis == null) {
// could not find counterHierarchy part at this level
break;
} else {
rci.ctrIds[i] = cis.index;
templevel = cis.nextLevel;
rci.foundUptoLevel++;
if (i == rci.levels.length - 1) {
rci.allLevelsFound = true;
}
}
} else {
// there are no more levels, which means that some part of the
// counterHierarchy has no corresponding map
break;
}
}
return rci;
}
protected void addToModuleCounterHierarchy(String moduleName, int counterId,
RetCtrInfo rci) {
Map<String, CounterIndexStore> target = moduleCounters.get(moduleName);
if (target == null) {
return;
}
CounterIndexStore cis = null;
for (int i = 0; i < rci.foundUptoLevel; i++) {
cis = target.get(rci.levels[i]);
target = cis.nextLevel;
}
if (cis != null) {
if (cis.nextLevel == null) {
cis.nextLevel = new ConcurrentHashMap<String, CounterIndexStore>();
}
cis.nextLevel.put(rci.levels[rci.foundUptoLevel],
new CounterIndexStore(counterId, null));
} else {
target.put(rci.levels[rci.foundUptoLevel],
new CounterIndexStore(counterId, null));
}
}
// given a partial hierarchical counter, return the rest of the hierarchy
protected ArrayList<Integer> getHierarchyBelow(String moduleName, RetCtrInfo rci) {
Map<String, CounterIndexStore> target = moduleCounters.get(moduleName);
CounterIndexStore cis = null;
ArrayList<Integer> retval = new ArrayList<Integer>();
if (target == null) {
return retval;
}
// get to the level given
for (int i = 0; i < rci.foundUptoLevel; i++) {
cis = target.get(rci.levels[i]);
target = cis.nextLevel;
}
if (target == null || rci.foundUptoLevel == MAX_HIERARCHY) {
// no more levels
return retval;
} else {
// recursively get all ids
getIdsAtLevel(target, retval, rci.foundUptoLevel + 1);
}
return retval;
}
protected void getIdsAtLevel(Map<String, CounterIndexStore> hcy,
ArrayList<Integer> retval, int level) {
if (level > MAX_HIERARCHY) {
return;
}
if (hcy == null || retval == null) {
return;
}
// Can return the counter names as well but for now ids are enough.
for (CounterIndexStore cistemp : hcy.values()) {
retval.add(cistemp.index); // value at this level
if (cistemp.nextLevel != null) {
getIdsAtLevel(cistemp.nextLevel, retval, level + 1);
}
}
}
}
package org.onlab.onos.of.controller.impl.debugcounter;
public interface IDebugCounter {
/**
* Increments the counter by 1 thread-locally, and immediately flushes to
* the global counter storage. This method should be used for counters that
* are updated outside the OF message processing pipeline.
*/
void updateCounterWithFlush();
/**
* Increments the counter by 1 thread-locally. Flushing to the global
* counter storage is delayed (happens with flushCounters() in IDebugCounterService),
* resulting in higher performance. This method should be used for counters
* updated in the OF message processing pipeline.
*/
void updateCounterNoFlush();
/**
* Increments the counter thread-locally by the 'incr' specified, and immediately
* flushes to the global counter storage. This method should be used for counters
* that are updated outside the OF message processing pipeline.
*/
void updateCounterWithFlush(int incr);
/**
* Increments the counter thread-locally by the 'incr' specified. Flushing to the global
* counter storage is delayed (happens with flushCounters() in IDebugCounterService),
* resulting in higher performance. This method should be used for counters
* updated in the OF message processing pipeline.
*/
void updateCounterNoFlush(int incr);
/**
* Retrieve the value of the counter from the global counter store.
*/
long getCounterValue();
}
package org.onlab.onos.of.controller.impl.debugcounter;
import java.util.List;
import org.onlab.onos.of.controller.impl.debugcounter.DebugCounter.DebugCounterInfo;
//CHECKSTYLE:OFF
public interface IDebugCounterService {
/**
* Different counter types. Counters that are meant to be counted-on-demand
* need to be separately enabled/disabled.
*/
public enum CounterType {
ALWAYS_COUNT,
COUNT_ON_DEMAND
}
/**
* Debug Counter Qualifiers.
*/
public static final String CTR_MDATA_WARN = "warn";
public static final String CTR_MDATA_ERROR = "error";
public static final String CTR_MDATA_DROP = "drop";
/**
* A limit on the maximum number of counters that can be created.
*/
public static final int MAX_COUNTERS = 5000;
/**
* Exception thrown when MAX_COUNTERS have been registered.
*/
public class MaxCountersRegistered extends CounterException {
private static final long serialVersionUID = 3173747663719376745L;
String errormsg;
public MaxCountersRegistered(String errormsg) {
this.errormsg = errormsg;
}
@Override
public String getMessage() {
return this.errormsg;
}
}
/**
* Exception thrown when MAX_HIERARCHY has been reached.
*/
public class MaxHierarchyRegistered extends CounterException {
private static final long serialVersionUID = 967431358683523871L;
private String errormsg;
public MaxHierarchyRegistered(String errormsg) {
this.errormsg = errormsg;
}
@Override
public String getMessage() {
return this.errormsg;
}
}
/**
* Exception thrown when attempting to register a hierarchical counter
* where higher levels of the hierarchy have not been pre-registered.
*/
public class MissingHierarchicalLevel extends CounterException {
private static final long serialVersionUID = 517315311533995739L;
private String errormsg;
public MissingHierarchicalLevel(String errormsg) {
this.errormsg = errormsg;
}
@Override
public String getMessage() {
return this.errormsg;
}
}
public class CounterException extends Exception {
private static final long serialVersionUID = 2219781500857866035L;
}
/**
* maximum levels of hierarchy.
* Example of moduleName/counterHierarchy:
* switch/00:00:00:00:01:02:03:04/pktin/drops where
* moduleName ==> "switch" and
* counterHierarchy of 3 ==> "00:00:00:00:01:02:03:04/pktin/drops"
*/
public static final int MAX_HIERARCHY = 3;
/**
* All modules that wish to have the DebugCounterService count for them, must
* register their counters by making this call (typically from that module's
* 'startUp' method). The counter can then be updated, displayed, reset etc.
* using the registered moduleName and counterHierarchy.
*
* @param moduleName the name of the module which is registering the
* counter eg. linkdiscovery or controller or switch
* @param counterHierarchy the hierarchical counter name specifying all
* the hierarchical levels that come above it.
* For example: to register a drop counter for
* packet-ins from a switch, the counterHierarchy
* can be "00:00:00:00:01:02:03:04/pktin/drops"
* It is necessary that counters in hierarchical levels
* above have already been pre-registered - in this
* example: "00:00:00:00:01:02:03:04/pktin" and
* "00:00:00:00:01:02:03:04"
* @param counterDescription a descriptive string that gives more information
* of what the counter is measuring. For example,
* "Measures the number of incoming packets seen by
* this module".
* @param counterType One of CounterType. On-demand counter types
* need to be explicitly enabled/disabled using other
* methods in this API -- i.e. registering them is
* not enough to start counting.
* @param metaData variable arguments that qualify a counter
* eg. warn, error etc.
* @return IDebugCounter with update methods that can be
* used to update a counter.
* @throws MaxCountersRegistered
* @throws MaxHierarchyRegistered
* @throws MissingHierarchicalLevel
*/
public IDebugCounter registerCounter(String moduleName, String counterHierarchy,
String counterDescription, CounterType counterType,
String... metaData)
throws CounterException;
/**
* Flush all thread-local counter values (from the current thread)
* to the global counter store. This method is not intended for use by any
* module. It's typical usage is from core and it is meant
* to flush those counters that are updated in the packet-processing pipeline,
* typically with the 'updateCounterNoFlush" methods in IDebugCounter.
*/
public void flushCounters();
/**
* Resets the value of counters in the hierarchy to zero. Note that the reset
* applies to the level of counter hierarchy specified AND ALL LEVELS BELOW it
* in the hierarchy.
* For example: If a hierarchy exists like "00:00:00:00:01:02:03:04/pktin/drops"
* specifying a reset hierarchy: "00:00:00:00:01:02:03:04"
* will reset all counters for the switch dpid specified;
* while specifying a reset hierarchy: ""00:00:00:00:01:02:03:04/pktin"
* will reset the pktin counter and all levels below it (like drops)
* for the switch dpid specified.
*/
void resetCounterHierarchy(String moduleName, String counterHierarchy);
/**
* Resets the values of all counters in the system.
*/
public void resetAllCounters();
/**
* Resets the values of all counters belonging
* to a module with the given 'moduleName'.
*/
public void resetAllModuleCounters(String moduleName);
/**
* This method applies only to CounterType.COUNT_ON_DEMAND. It is used to
* enable counting on the counter. Note that this step is necessary to start
* counting for these counter types - merely registering the counter is not
* enough (as is the case for CounterType.ALWAYS_COUNT). Newly
* enabled counters start from an initial value of zero.
*
* Enabling a counter in a counterHierarchy enables only THAT counter. It
* does not enable any other part of the counterHierarchy. For example, if
* a hierarchy exists like "00:00:00:00:01:02:03:04/pktin/drops", where the
* 'pktin' and 'drops' counters are CounterType.COUNT_ON_DEMAND, then enabling
* the 'pktin' counter by specifying the counterHierarchy as
* "00:00:00:00:01:02:03:04/pktin" does NOT enable the 'drops' counter.
*/
public void enableCtrOnDemand(String moduleName, String counterHierarchy);
/**
* This method applies only to CounterType.COUNT_ON_DEMAND. It is used to
* enable counting on the counter. Note that disabling a counter results in a loss
* of the counter value. When re-enabled the counter will restart from zero.
*
* Disabling a counter in a counterHierarchy disables only THAT counter. It
* does not disable any other part of the counterHierarchy. For example, if
* a hierarchy exists like "00:00:00:00:01:02:03:04/pktin/drops", where the
* 'pktin' and 'drops' counters are CounterType.COUNT_ON_DEMAND, then disabling
* the 'pktin' counter by specifying the counterHierarchy as
* "00:00:00:00:01:02:03:04/pktin" does NOT disable the 'drops' counter.
*/
public void disableCtrOnDemand(String moduleName, String counterHierarchy);
/**
* Get counter value and associated information for the specified counterHierarchy.
* Note that information on the level of counter hierarchy specified
* AND ALL LEVELS BELOW it in the hierarchy will be returned.
*
* For example,
* if a hierarchy exists like "00:00:00:00:01:02:03:04/pktin/drops", then
* specifying a counterHierarchy of "00:00:00:00:01:02:03:04/pktin" in the
* get call will return information on the 'pktin' as well as the 'drops'
* counters for the switch dpid specified.
*
* @return A list of DebugCounterInfo or an empty list if the counter
* could not be found
*/
public List<DebugCounterInfo> getCounterHierarchy(String moduleName,
String counterHierarchy);
/**
* Get counter values and associated information for all counters in the
* system.
*
* @return the list of values/info or an empty list
*/
public List<DebugCounterInfo> getAllCounterValues();
/**
* Get counter values and associated information for all counters associated
* with a module.
*
* @param moduleName
* @return the list of values/info or an empty list
*/
public List<DebugCounterInfo> getModuleCounterValues(String moduleName);
/**
* Convenience method to figure out if the the given 'counterHierarchy' corresponds
* to a registered counterHierarchy for 'moduleName'. Note that the counter may or
* may not be enabled for counting, but if it is registered the method will
* return true.
*
* @param moduleName
* @param counterHierarchy
* @return false if moduleCounterHierarchy is not a registered counter
*/
public boolean containsModuleCounterHierarchy(String moduleName,
String counterHierarchy);
/**
* Convenience method to figure out if the the given 'moduleName' corresponds
* to a registered moduleName or not. Note that the module may or may not have
* a counter enabled for counting, but if it is registered the method will
* return true.
*
* @param moduleName
* @return false if moduleName is not a registered counter
*/
public boolean containsModuleName(String moduleName);
/**
* Returns a list of moduleNames registered for debug counters or an empty
* list if no counters have been registered in the system.
*/
public List<String> getModuleList();
/**
* Returns a list of all counters registered for a specific moduleName
* or a empty list.
*/
public List<String> getModuleCounterList(String moduleName);
}
package org.onlab.onos.of.controller.impl.debugcounter;
import java.util.Collections;
import java.util.List;
import org.onlab.onos.of.controller.impl.debugcounter.DebugCounter.DebugCounterInfo;
//CHECKSTYLE:OFF
public class NullDebugCounter implements IDebugCounterService {
@Override
public void flushCounters() {
}
@Override
public void resetAllCounters() {
}
@Override
public void resetAllModuleCounters(String moduleName) {
}
@Override
public void resetCounterHierarchy(String moduleName, String counterHierarchy) {
}
@Override
public void enableCtrOnDemand(String moduleName, String counterHierarchy) {
}
@Override
public void disableCtrOnDemand(String moduleName, String counterHierarchy) {
}
@Override
public List<DebugCounterInfo> getCounterHierarchy(String moduleName,
String counterHierarchy) {
return Collections.emptyList();
}
@Override
public List<DebugCounterInfo> getAllCounterValues() {
return Collections.emptyList();
}
@Override
public List<DebugCounterInfo> getModuleCounterValues(String moduleName) {
return Collections.emptyList();
}
@Override
public boolean containsModuleCounterHierarchy(String moduleName,
String counterHierarchy) {
return false;
}
@Override
public boolean containsModuleName(String moduleName) {
return false;
}
@Override
public
IDebugCounter
registerCounter(String moduleName, String counterHierarchy,
String counterDescription,
CounterType counterType, String... metaData)
throws MaxCountersRegistered {
return new NullCounterImpl();
}
@Override
public List<String> getModuleList() {
return Collections.emptyList();
}
@Override
public List<String> getModuleCounterList(String moduleName) {
return Collections.emptyList();
}
public static class NullCounterImpl implements IDebugCounter {
@Override
public void updateCounterWithFlush() {
}
@Override
public void updateCounterNoFlush() {
}
@Override
public void updateCounterWithFlush(int incr) {
}
@Override
public void updateCounterNoFlush(int incr) {
}
@Override
public long getCounterValue() {
return -1;
}
}
}
/**
* Copyright 2011, Big Switch Networks, Inc.
* Originally created by David Erickson, Stanford University
*
* Licensed under the Apache License, Version 2.0 (the "License"); you may
* not use this file except in compliance with the License. You may obtain
* a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
* WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
* License for the specific language governing permissions and limitations
* under the License.
**/
package org.onlab.onos.of.controller.impl.internal;
import java.io.IOException;
import java.util.List;
import org.jboss.netty.channel.Channel;
import org.onlab.onos.of.controller.Dpid;
import org.onlab.onos.of.controller.OpenFlowSwitch;
import org.onlab.onos.of.controller.RoleState;
import org.onlab.onos.of.controller.impl.internal.OpenFlowControllerImpl.OpenFlowSwitchAgent;
import org.onlab.onos.of.controller.impl.internal.RoleManager.RoleRecvStatus;
import org.onlab.onos.of.controller.impl.internal.RoleManager.RoleReplyInfo;
import org.projectfloodlight.openflow.protocol.OFErrorMsg;
import org.projectfloodlight.openflow.protocol.OFExperimenter;
import org.projectfloodlight.openflow.protocol.OFFactories;
import org.projectfloodlight.openflow.protocol.OFFactory;
import org.projectfloodlight.openflow.protocol.OFFeaturesReply;
import org.projectfloodlight.openflow.protocol.OFMessage;
import org.projectfloodlight.openflow.protocol.OFPortDescStatsReply;
import org.projectfloodlight.openflow.protocol.OFRoleReply;
import org.projectfloodlight.openflow.protocol.OFVersion;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
public abstract class AbstractOpenFlowSwitch implements OpenFlowSwitch {
private static Logger log =
LoggerFactory.getLogger(AbstractOpenFlowSwitch.class);
private Channel channel;
private boolean connected;
private Dpid dpid;
private OpenFlowSwitchAgent agent;
private OFVersion ofVersion;
protected OFPortDescStatsReply ports;
protected boolean tableFull;
private final RoleManager roleMan = new RoleManager(this);
protected AbstractOpenFlowSwitch(long dpid) {
this.dpid = new Dpid(dpid);
}
//************************
// Channel related
//************************
/**
* Disconnects the switch by closing the TCP connection. Results in a call
* to the channel handler's channelDisconnected method for cleanup
* @throws IOException
*/
public final void disconnectSwitch() {
this.channel.close();
}
/**
* Writes to the OFMessage to the output stream.
*
* @param m the message to be written
*/
public abstract void write(OFMessage m);
/**
* Writes to the OFMessage list to the output stream.
*
* @param msgs the messages to be written
*/
public abstract void write(List<OFMessage> msgs);
/**
* Checks if the switch is still connected.
* Only call while holding processMessageLock
*
* @return whether the switch is still disconnected
*/
public final boolean isConnected() {
return this.connected;
}
/**
* Sets whether the switch is connected.
* Only call while holding modifySwitchLock
*
* @param connected whether the switch is connected
*/
final void setConnected(boolean connected) {
this.connected = connected;
};
/**
* Sets the Netty Channel this switch instance is associated with.
* <p>
* Called immediately after instantiation
*
* @param channel the channel
*/
public final void setChannel(Channel channel) {
this.channel = channel;
};
//************************
// Switch features related
//************************
/**
* Gets the datapathId of the switch.
*
* @return the switch buffers
*/
public final long getId() {
return this.dpid.value();
};
/**
* Gets a string version of the ID for this switch.
*
* @return string version of the ID
*/
public final String getStringId() {
return this.dpid.toString();
}
public final void setOFVersion(OFVersion ofV) {
this.ofVersion = ofV;
}
void setTableFull(boolean full) {
this.tableFull = full;
}
public abstract void setFeaturesReply(OFFeaturesReply featuresReply);
/**
* Let peoeple know if you support Nicira style role requests.
*
* @return support Nicira roles or not.
*/
public abstract Boolean supportNxRole();
//************************
// Message handling
//************************
/**
* Handle the message coming from the dataplane.
*
* @param m the actual message
*/
public final void handleMessage(OFMessage m) {
this.agent.processMessage(m);
}
public abstract RoleState getRole();
final boolean addConnectedSwitch() {
return this.agent.addConnectedSwitch(this.getId(), this);
}
final boolean addActivatedMasterSwitch() {
return this.agent.addActivatedMasterSwitch(this.getId(), this);
}
final boolean addActivatedEqualSwitch() {
return this.agent.addActivatedEqualSwitch(this.getId(), this);
}
final void transitionToEqualSwitch() {
this.agent.transitionToEqualSwitch(this.getId());
}
final void transitionToMasterSwitch() {
this.agent.transitionToMasterSwitch(this.getId());
}
final void removeConnectedSwitch() {
this.agent.removeConnectedSwitch(this.getId());
}
protected OFFactory factory() {
return OFFactories.getFactory(ofVersion);
}
public void setPortDescReply(OFPortDescStatsReply portDescReply) {
this.ports = portDescReply;
}
public abstract void startDriverHandshake();
public abstract boolean isDriverHandshakeComplete();
public abstract void processDriverHandshakeMessage(OFMessage m);
public void setRole(RoleState role) {
try {
this.roleMan.sendRoleRequest(role, RoleRecvStatus.MATCHED_SET_ROLE);
} catch (IOException e) {
log.error("Unable to write to switch {}.", this.dpid);
}
}
// Role Handling
void handleRole(OFMessage m) throws SwitchStateException {
RoleReplyInfo rri = roleMan.extractOFRoleReply((OFRoleReply) m);
RoleRecvStatus rrs = roleMan.deliverRoleReply(rri);
if (rrs == RoleRecvStatus.MATCHED_SET_ROLE) {
if (rri.getRole() == RoleState.MASTER) {
this.transitionToMasterSwitch();
} else if (rri.getRole() == RoleState.EQUAL ||
rri.getRole() == RoleState.MASTER) {
this.transitionToEqualSwitch();
}
}
}
void handleNiciraRole(OFMessage m) throws SwitchStateException {
RoleState role = this.roleMan.extractNiciraRoleReply((OFExperimenter) m);
if (role == null) {
// The message wasn't really a Nicira role reply. We just
// dispatch it to the OFMessage listeners in this case.
this.handleMessage(m);
}
RoleRecvStatus rrs = this.roleMan.deliverRoleReply(
new RoleReplyInfo(role, null, m.getXid()));
if (rrs == RoleRecvStatus.MATCHED_SET_ROLE) {
if (role == RoleState.MASTER) {
this.transitionToMasterSwitch();
} else if (role == RoleState.EQUAL ||
role == RoleState.SLAVE) {
this.transitionToEqualSwitch();
}
}
}
boolean handleRoleError(OFErrorMsg error) {
try {
return RoleRecvStatus.OTHER_EXPECTATION != this.roleMan.deliverError(error);
} catch (SwitchStateException e) {
this.disconnectSwitch();
}
return true;
}
void reassertRole() {
if (this.getRole() == RoleState.MASTER) {
this.setRole(RoleState.MASTER);
}
}
void setAgent(OpenFlowSwitchAgent ag) {
this.agent = ag;
}
}
......@@ -20,47 +20,22 @@ package org.onlab.onos.of.controller.impl.internal;
import java.lang.management.ManagementFactory;
import java.lang.management.RuntimeMXBean;
import java.net.InetSocketAddress;
import java.net.UnknownHostException;
import java.util.Collections;
import java.util.HashMap;
import java.util.HashSet;
import java.util.Map;
import java.util.Set;
import java.util.concurrent.ConcurrentHashMap;
import java.util.concurrent.Executors;
import org.onlab.onos.of.controller.impl.IOFSwitchManager;
import org.onlab.onos.of.controller.impl.Role;
import org.onlab.onos.of.controller.impl.annotations.LogMessageDoc;
import org.onlab.onos.of.controller.impl.annotations.LogMessageDocs;
import org.onlab.onos.of.controller.impl.debugcounter.DebugCounter;
import org.onlab.onos.of.controller.impl.debugcounter.IDebugCounter;
import org.onlab.onos.of.controller.impl.debugcounter.IDebugCounterService;
import org.onlab.onos.of.controller.impl.debugcounter.IDebugCounterService.CounterException;
import org.onlab.onos.of.controller.impl.debugcounter.IDebugCounterService.CounterType;
import org.onlab.onos.of.controller.impl.internal.OFChannelHandler.RoleRecvStatus;
import org.onlab.onos.of.controller.impl.registry.IControllerRegistry;
import org.onlab.onos.of.controller.impl.registry.RegistryException;
import org.onlab.onos.of.controller.impl.registry.IControllerRegistry.ControlChangeCallback;
import org.onlab.onos.of.controller.impl.util.Dpid;
import org.onlab.onos.of.controller.impl.util.DummySwitchForTesting;
import org.onlab.onos.of.controller.impl.util.InstanceId;
import org.onlab.onos.of.controller.impl.IOFSwitch;
import org.onlab.onos.of.controller.impl.IOFSwitch.PortChangeType;
import org.apache.felix.scr.annotations.Activate;
import org.apache.felix.scr.annotations.Component;
import org.jboss.netty.bootstrap.ServerBootstrap;
import org.jboss.netty.channel.ChannelPipelineFactory;
import org.jboss.netty.channel.group.ChannelGroup;
import org.jboss.netty.channel.group.DefaultChannelGroup;
import org.jboss.netty.channel.socket.nio.NioServerSocketChannelFactory;
import org.onlab.onos.of.controller.impl.annotations.LogMessageDoc;
import org.onlab.onos.of.controller.impl.annotations.LogMessageDocs;
import org.onlab.onos.of.controller.impl.internal.OpenFlowControllerImpl.OpenFlowSwitchAgent;
import org.projectfloodlight.openflow.protocol.OFDescStatsReply;
import org.projectfloodlight.openflow.protocol.OFFactories;
import org.projectfloodlight.openflow.protocol.OFFactory;
import org.projectfloodlight.openflow.protocol.OFPortDesc;
import org.projectfloodlight.openflow.protocol.OFVersion;
import org.projectfloodlight.openflow.util.HexString;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
......@@ -69,7 +44,6 @@ import org.slf4j.LoggerFactory;
* The main controller class. Handles all setup and network listeners
* - Distributed ownership control of switch through IControllerRegistryService
*/
@Component(immediate = true)
public class Controller {
protected static final Logger log = LoggerFactory.getLogger(Controller.class);
......@@ -78,189 +52,33 @@ public class Controller {
protected static final OFFactory FACTORY13 = OFFactories.getFactory(OFVersion.OF_13);
protected static final OFFactory FACTORY10 = OFFactories.getFactory(OFVersion.OF_10);
// connectedSwitches cache contains all connected switch's channelHandlers
// including ones where this controller is a master/equal/slave controller
// as well as ones that have not been activated yet
protected ConcurrentHashMap<Long, OFChannelHandler> connectedSwitches;
// These caches contains only those switches that are active
protected ConcurrentHashMap<Long, IOFSwitch> activeMasterSwitches;
protected ConcurrentHashMap<Long, IOFSwitch> activeEqualSwitches;
// lock to synchronize on, when manipulating multiple caches above
private Object multiCacheLock;
// The controllerNodeIPsCache maps Controller IDs to their IP address.
// It's only used by handleControllerNodeIPsChanged
protected HashMap<String, String> controllerNodeIPsCache;
// Module dependencies
protected IControllerRegistry registryService;
protected IDebugCounterService debugCounters;
private IOFSwitchManager switchManager;
private ChannelGroup cg;
// Configuration options
protected int openFlowPort = 6633;
protected int workerThreads = 0;
// defined counters
private Counters counters;
// Start time of the controller
protected long systemStartTime;
// Flag to always flush flow table on switch reconnect (HA or otherwise)
protected boolean alwaysClearFlowsOnSwAdd = false;
private InstanceId instanceId;
private OpenFlowSwitchAgent agent;
// Perf. related configuration
protected static final int SEND_BUFFER_SIZE = 4 * 1024 * 1024;
protected static final int BATCH_MAX_SIZE = 100;
protected static final boolean ALWAYS_DECODE_ETH = true;
protected boolean addConnectedSwitch(long dpid, OFChannelHandler h) {
if (connectedSwitches.get(dpid) != null) {
log.error("Trying to add connectedSwitch but found a previous "
+ "value for dpid: {}", dpid);
return false;
} else {
log.error("Added switch {}", dpid);
connectedSwitches.put(dpid, h);
return true;
}
}
private boolean validActivation(long dpid) {
if (connectedSwitches.get(dpid) == null) {
log.error("Trying to activate switch but is not in "
+ "connected switches: dpid {}. Aborting ..",
HexString.toHexString(dpid));
return false;
}
if (activeMasterSwitches.get(dpid) != null ||
activeEqualSwitches.get(dpid) != null) {
log.error("Trying to activate switch but it is already "
+ "activated: dpid {}. Found in activeMaster: {} "
+ "Found in activeEqual: {}. Aborting ..", new Object[] {
HexString.toHexString(dpid),
(activeMasterSwitches.get(dpid) == null) ? 'N' : 'Y',
(activeEqualSwitches.get(dpid) == null) ? 'N' : 'Y'});
counters.switchWithSameDpidActivated.updateCounterWithFlush();
return false;
}
return true;
}
/**
* Called when a switch is activated, with this controller's role as MASTER.
*/
protected boolean addActivatedMasterSwitch(long dpid, IOFSwitch sw) {
synchronized (multiCacheLock) {
if (!validActivation(dpid)) {
return false;
}
activeMasterSwitches.put(dpid, sw);
}
//update counters and events
counters.switchActivated.updateCounterWithFlush();
return true;
}
/**
* Called when a switch is activated, with this controller's role as EQUAL.
*/
protected boolean addActivatedEqualSwitch(long dpid, IOFSwitch sw) {
synchronized (multiCacheLock) {
if (!validActivation(dpid)) {
return false;
}
activeEqualSwitches.put(dpid, sw);
}
//update counters and events
counters.switchActivated.updateCounterWithFlush();
return true;
}
/**
* Called when this controller's role for a switch transitions from equal
* to master. For 1.0 switches, we internally refer to the role 'slave' as
* 'equal' - so this transition is equivalent to 'addActivatedMasterSwitch'.
*/
protected void transitionToMasterSwitch(long dpid) {
synchronized (multiCacheLock) {
IOFSwitch sw = activeEqualSwitches.remove(dpid);
if (sw == null) {
log.error("Transition to master called on sw {}, but switch "
+ "was not found in controller-cache", dpid);
return;
}
activeMasterSwitches.put(dpid, sw);
}
}
/**
* Called when this controller's role for a switch transitions to equal.
* For 1.0 switches, we internally refer to the role 'slave' as
* 'equal'.
*/
protected void transitionToEqualSwitch(long dpid) {
synchronized (multiCacheLock) {
IOFSwitch sw = activeMasterSwitches.remove(dpid);
if (sw == null) {
log.error("Transition to equal called on sw {}, but switch "
+ "was not found in controller-cache", dpid);
return;
}
activeEqualSwitches.put(dpid, sw);
}
}
/**
* Clear all state in controller switch maps for a switch that has
* disconnected from the local controller. Also release control for
* that switch from the global repository. Notify switch listeners.
*/
protected void removeConnectedSwitch(long dpid) {
releaseRegistryControl(dpid);
connectedSwitches.remove(dpid);
IOFSwitch sw = activeMasterSwitches.remove(dpid);
if (sw == null) {
sw = activeEqualSwitches.remove(dpid);
}
if (sw != null) {
sw.cancelAllStatisticsReplies();
sw.setConnected(false); // do we need this?
}
counters.switchDisconnected.updateCounterWithFlush();
}
/**
* Indicates that ports on the given switch have changed. Enqueue a
* switch update.
* @param dpid
* @param port
* @param changeType
*/
protected void notifyPortChanged(long dpid, OFPortDesc port,
PortChangeType changeType) {
if (port == null || changeType == null) {
String msg = String.format("Switch port or changetType must not "
+ "be null in port change notification");
throw new NullPointerException(msg);
}
if (connectedSwitches.get(dpid) == null || getSwitch(dpid) == null) {
log.warn("Port change update on switch {} not connected or activated "
+ "... Aborting.", HexString.toHexString(dpid));
return;
}
}
// ***************
// Getters/Setters
// ***************
......@@ -268,180 +86,8 @@ public class Controller {
public synchronized void setIOFSwitchManager(IOFSwitchManager swManager) {
this.switchManager = swManager;
this.registryService = swManager.getRegistry();
}
public void setDebugCounter(IDebugCounterService dcs) {
this.debugCounters = dcs;
}
IDebugCounterService getDebugCounter() {
return this.debugCounters;
}
// **********************
// Role Handling
// **********************
/**
* created by ONOS - works with registry service.
*/
protected class RoleChangeCallback implements ControlChangeCallback {
@Override
public void controlChanged(long dpidLong, boolean hasControl) {
Dpid dpid = new Dpid(dpidLong);
log.info("Role change callback for switch {}, hasControl {}",
dpid, hasControl);
Role role = null;
/*
* issue #229
* Cannot rely on sw.getRole() as it can be behind due to pending
* role changes in the queue. Just submit it and late the
* RoleChanger handle duplicates.
*/
if (hasControl) {
role = Role.MASTER;
} else {
role = Role.EQUAL; // treat the same as Role.SLAVE
}
OFChannelHandler swCh = connectedSwitches.get(dpid.value());
if (swCh == null) {
log.warn("Switch {} not found in connected switches", dpid);
return;
}
log.debug("Sending role request {} msg to {}", role, dpid);
swCh.sendRoleRequest(role, RoleRecvStatus.MATCHED_SET_ROLE);
}
}
/**
* Submit request to the registry service for mastership of the
* switch.
* @param dpid this datapath to get role for
*/
public synchronized void submitRegistryRequest(long dpid) {
if (registryService == null) {
/*
* If we have no registry then simply assign
* mastership to this controller.
*/
new RoleChangeCallback().controlChanged(dpid, true);
return;
}
OFChannelHandler h = connectedSwitches.get(dpid);
if (h == null) {
log.error("Trying to request registry control for switch {} "
+ "not in connected switches. Aborting.. ",
HexString.toHexString(dpid));
connectedSwitches.get(dpid).disconnectSwitch();
return;
}
//Request control of the switch from the global registry
try {
h.controlRequested = Boolean.TRUE;
registryService.requestControl(dpid, new RoleChangeCallback());
} catch (RegistryException e) {
log.debug("Registry error: {}", e.getMessage());
h.controlRequested = Boolean.FALSE;
}
if (!h.controlRequested) { // XXX what is being attempted here?
// yield to allow other thread(s) to release control
// TODO AAS: this is awful and needs to be fixed
Thread.yield();
// safer to bounce the switch to reconnect here than proceeding further
// XXX S why? can't we just try again a little later?
log.debug("Closing sw:{} because we weren't able to request control " +
"successfully" + dpid);
connectedSwitches.get(dpid).disconnectSwitch();
}
}
/**
* Relinquish role for the switch.
* @param dpidLong the controlled datapath
*/
public synchronized void releaseRegistryControl(long dpidLong) {
OFChannelHandler h = connectedSwitches.get(dpidLong);
if (h == null) {
log.error("Trying to release registry control for switch {} "
+ "not in connected switches. Aborting.. ",
HexString.toHexString(dpidLong));
return;
}
if (registryService != null && h.controlRequested) {
//TODO the above is not good for testing need to change controlrequest to method call.
registryService.releaseControl(dpidLong);
}
}
// FIXME: remove this method
public Map<Long, IOFSwitch> getSwitches() {
return getMasterSwitches();
}
// FIXME: remove this method
public Map<Long, IOFSwitch> getMasterSwitches() {
return Collections.unmodifiableMap(activeMasterSwitches);
}
public Set<Long> getAllSwitchDpids() {
Set<Long> dpids = new HashSet<Long>();
dpids.addAll(activeMasterSwitches.keySet());
dpids.addAll(activeEqualSwitches.keySet());
return dpids;
}
public Set<Long> getAllMasterSwitchDpids() {
Set<Long> dpids = new HashSet<Long>();
dpids.addAll(activeMasterSwitches.keySet());
return dpids;
}
public Set<Long> getAllEqualSwitchDpids() {
Set<Long> dpids = new HashSet<Long>();
dpids.addAll(activeEqualSwitches.keySet());
return dpids;
}
public IOFSwitch getSwitch(long dpid) {
IOFSwitch sw = null;
sw = activeMasterSwitches.get(dpid);
if (sw != null) {
return sw;
}
sw = activeEqualSwitches.get(dpid);
if (sw != null) {
return sw;
}
return sw;
}
public IOFSwitch getMasterSwitch(long dpid) {
return activeMasterSwitches.get(dpid);
}
public IOFSwitch getEqualSwitch(long dpid) {
return activeEqualSwitches.get(dpid);
}
public OFFactory getOFMessageFactory10() {
return FACTORY10;
}
......@@ -469,12 +115,6 @@ public class Controller {
return (this.systemStartTime);
}
public InstanceId getInstanceId() {
return instanceId;
}
// **************
// Initialization
// **************
......@@ -509,7 +149,7 @@ public class Controller {
new OpenflowPipelineFactory(this, null);
bootstrap.setPipelineFactory(pfact);
InetSocketAddress sa = new InetSocketAddress(openFlowPort);
final ChannelGroup cg = new DefaultChannelGroup();
cg = new DefaultChannelGroup();
cg.add(bootstrap.bind(sa));
log.info("Listening for switch connections on {}", sa);
......@@ -544,20 +184,6 @@ public class Controller {
this.workerThreads = Integer.parseInt(threads);
}
log.debug("Number of worker threads set to {}", this.workerThreads);
String controllerId = configParams.get("controllerid");
if (controllerId != null) {
this.instanceId = new InstanceId(controllerId);
} else {
//Try to get the hostname of the machine and use that for controller ID
try {
String hostname = java.net.InetAddress.getLocalHost().getHostName();
this.instanceId = new InstanceId(hostname);
} catch (UnknownHostException e) {
log.warn("Can't get hostname, using the default");
}
}
log.debug("ControllerId set to {}", this.instanceId);
}
......@@ -567,16 +193,11 @@ public class Controller {
public void init(Map<String, String> configParams) {
// These data structures are initialized here because other
// module's startUp() might be called before ours
this.activeMasterSwitches = new ConcurrentHashMap<Long, IOFSwitch>();
this.activeEqualSwitches = new ConcurrentHashMap<Long, IOFSwitch>();
this.connectedSwitches = new ConcurrentHashMap<Long, OFChannelHandler>();
this.controllerNodeIPsCache = new HashMap<String, String>();
setConfigParams(configParams);
this.systemStartTime = System.currentTimeMillis();
this.setDebugCounter(new DebugCounter());
this.counters = new Counters();
this.multiCacheLock = new Object();
}
......@@ -589,215 +210,10 @@ public class Controller {
"that the system database has failed to start. " +
LogMessageDoc.CHECK_CONTROLLER)
public synchronized void startupComponents() {
try {
if (registryService != null) {
registryService.registerController(instanceId.toString());
}
} catch (RegistryException e) {
log.warn("Registry service error: {}", e.getMessage());
}
// register counters and events
try {
this.counters.createCounters(debugCounters);
} catch (CounterException e) {
log.warn("Counters unavailable: {}", e.getMessage());
}
//TODO do something maybe
}
// **************
// debugCounter registrations
// **************
public static class Counters {
public static final String PREFIX = "controller";
public IDebugCounter switchActivated;
public IDebugCounter switchWithSameDpidActivated; // warn
public IDebugCounter switchDisconnected;
public IDebugCounter messageReceived;
public IDebugCounter switchDisconnectReadTimeout;
public IDebugCounter switchDisconnectHandshakeTimeout;
public IDebugCounter switchDisconnectIOError;
public IDebugCounter switchDisconnectParseError;
public IDebugCounter switchDisconnectSwitchStateException;
public IDebugCounter rejectedExecutionException;
public IDebugCounter switchDisconnectOtherException;
public IDebugCounter switchConnected;
public IDebugCounter unhandledMessage;
public IDebugCounter packetInWhileSwitchIsSlave;
public IDebugCounter epermErrorWhileSwitchIsMaster;
public IDebugCounter roleReplyTimeout;
public IDebugCounter roleReplyReceived; // expected RoleReply received
public IDebugCounter roleReplyErrorUnsupported;
public IDebugCounter switchCounterRegistrationFailed;
void createCounters(IDebugCounterService debugCounters) throws CounterException {
switchActivated =
debugCounters.registerCounter(
PREFIX, "switch-activated",
"A switch connected to this controller is now " +
"in MASTER role",
CounterType.ALWAYS_COUNT);
switchWithSameDpidActivated = // warn
debugCounters.registerCounter(
PREFIX, "switch-with-same-dpid-activated",
"A switch with the same DPID as another switch " +
"connected to the controller. This can be " +
"caused by multiple switches configured with " +
"the same DPID or by a switch reconnecting very " +
"quickly.",
CounterType.COUNT_ON_DEMAND,
IDebugCounterService.CTR_MDATA_WARN);
switchDisconnected =
debugCounters.registerCounter(
PREFIX, "switch-disconnected",
"FIXME: switch has disconnected",
CounterType.ALWAYS_COUNT);
//------------------------
// channel handler counters. Factor them out ??
messageReceived =
debugCounters.registerCounter(
PREFIX, "message-received",
"Number of OpenFlow messages received. Some of " +
"these might be throttled",
CounterType.ALWAYS_COUNT);
switchDisconnectReadTimeout =
debugCounters.registerCounter(
PREFIX, "switch-disconnect-read-timeout",
"Number of times a switch was disconnected due " +
"due the switch failing to send OpenFlow " +
"messages or responding to OpenFlow ECHOs",
CounterType.ALWAYS_COUNT,
IDebugCounterService.CTR_MDATA_ERROR);
switchDisconnectHandshakeTimeout =
debugCounters.registerCounter(
PREFIX, "switch-disconnect-handshake-timeout",
"Number of times a switch was disconnected " +
"because it failed to complete the handshake " +
"in time.",
CounterType.ALWAYS_COUNT,
IDebugCounterService.CTR_MDATA_ERROR);
switchDisconnectIOError =
debugCounters.registerCounter(
PREFIX, "switch-disconnect-io-error",
"Number of times a switch was disconnected " +
"due to IO errors on the switch connection.",
CounterType.ALWAYS_COUNT,
IDebugCounterService.CTR_MDATA_ERROR);
switchDisconnectParseError =
debugCounters.registerCounter(
PREFIX, "switch-disconnect-parse-error",
"Number of times a switch was disconnected " +
"because it sent an invalid packet that could " +
"not be parsed",
CounterType.ALWAYS_COUNT,
IDebugCounterService.CTR_MDATA_ERROR);
switchDisconnectSwitchStateException =
debugCounters.registerCounter(
PREFIX, "switch-disconnect-switch-state-exception",
"Number of times a switch was disconnected " +
"because it sent messages that were invalid " +
"given the switch connection's state.",
CounterType.ALWAYS_COUNT,
IDebugCounterService.CTR_MDATA_ERROR);
rejectedExecutionException =
debugCounters.registerCounter(
PREFIX, "rejected-execution-exception",
"TODO",
CounterType.ALWAYS_COUNT,
IDebugCounterService.CTR_MDATA_ERROR);
switchDisconnectOtherException =
debugCounters.registerCounter(
PREFIX, "switch-disconnect-other-exception",
"Number of times a switch was disconnected " +
"due to an exceptional situation not covered " +
"by other counters",
CounterType.ALWAYS_COUNT,
IDebugCounterService.CTR_MDATA_ERROR);
switchConnected =
debugCounters.registerCounter(
PREFIX, "switch-connected",
"Number of times a new switch connection was " +
"established",
CounterType.ALWAYS_COUNT);
unhandledMessage =
debugCounters.registerCounter(
PREFIX, "unhandled-message",
"Number of times an OpenFlow message was " +
"received that the controller ignored because " +
"it was inapproriate given the switch " +
"connection's state.",
CounterType.ALWAYS_COUNT,
IDebugCounterService.CTR_MDATA_WARN);
// might be less than warning
packetInWhileSwitchIsSlave =
debugCounters.registerCounter(
PREFIX, "packet-in-while-switch-is-slave",
"Number of times a packet in was received " +
"from a switch that was in SLAVE role. " +
"Possibly inidicates inconsistent roles.",
CounterType.ALWAYS_COUNT);
epermErrorWhileSwitchIsMaster =
debugCounters.registerCounter(
PREFIX, "eperm-error-while-switch-is-master",
"Number of times a permission error was " +
"received while the switch was in MASTER role. " +
"Possibly inidicates inconsistent roles.",
CounterType.ALWAYS_COUNT,
IDebugCounterService.CTR_MDATA_WARN);
roleReplyTimeout =
debugCounters.registerCounter(
PREFIX, "role-reply-timeout",
"Number of times a role request message did not " +
"receive the expected reply from a switch",
CounterType.ALWAYS_COUNT,
IDebugCounterService.CTR_MDATA_WARN);
roleReplyReceived = // expected RoleReply received
debugCounters.registerCounter(
PREFIX, "role-reply-received",
"Number of times the controller received the " +
"expected role reply message from a switch",
CounterType.ALWAYS_COUNT);
roleReplyErrorUnsupported =
debugCounters.registerCounter(
PREFIX, "role-reply-error-unsupported",
"Number of times the controller received an " +
"error from a switch in response to a role " +
"request indicating that the switch does not " +
"support roles.",
CounterType.ALWAYS_COUNT);
switchCounterRegistrationFailed =
debugCounters.registerCounter(PREFIX,
"switch-counter-registration-failed",
"Number of times the controller failed to " +
"register per-switch debug counters",
CounterType.ALWAYS_COUNT,
IDebugCounterService.CTR_MDATA_WARN);
}
}
public Counters getCounters() {
return this.counters;
}
// **************
// Utility methods
// **************
......@@ -820,20 +236,24 @@ public class Controller {
* @param desc
* @return switch instance
*/
protected IOFSwitch getOFSwitchInstance(OFDescStatsReply desc, OFVersion ofv) {
if (switchManager == null) {
return new DummySwitchForTesting();
}
return switchManager.getSwitchImpl(desc.getMfrDesc(), desc.getHwDesc(),
protected AbstractOpenFlowSwitch getOFSwitchInstance(OFDescStatsReply desc, OFVersion ofv) {
AbstractOpenFlowSwitch sw = switchManager.getSwitchImpl(desc.getMfrDesc(), desc.getHwDesc(),
desc.getSwDesc(), ofv);
sw.setAgent(agent);
return sw;
}
@Activate
public void activate() {
public void start(OpenFlowSwitchAgent ag) {
log.info("Initialising OpenFlow Lib and IO");
this.agent = ag;
this.init(new HashMap<String, String>());
this.startupComponents();
this.run();
}
public void stop() {
cg.close();
}
}
......
package org.onlab.onos.of.controller.impl;
package org.onlab.onos.of.controller.impl.internal;
import org.projectfloodlight.openflow.protocol.OFVersion;
import org.onlab.onos.of.controller.impl.registry.IControllerRegistry;
/**
* Interface to passed to controller class in order to allow
......@@ -22,12 +21,6 @@ public interface IOFSwitchManager {
* @param ofv openflow version
* @return A switch of type IOFSwitch.
*/
public IOFSwitch getSwitchImpl(String mfr, String hwDesc, String swDesc, OFVersion ofv);
/**
* Returns the mastership registry used during controller-switch role election.
* @return the registry
*/
public IControllerRegistry getRegistry();
public AbstractOpenFlowSwitch getSwitchImpl(String mfr, String hwDesc, String swDesc, OFVersion ofv);
}
......
......@@ -4,21 +4,11 @@ package org.onlab.onos.of.controller.impl.internal;
import java.io.IOException;
import java.nio.channels.ClosedChannelException;
import java.util.ArrayList;
import java.util.Collection;
import java.util.Collections;
import java.util.List;
import java.util.concurrent.CopyOnWriteArrayList;
import java.util.concurrent.RejectedExecutionException;
import org.onlab.onos.of.controller.impl.IOFSwitch;
import org.onlab.onos.of.controller.impl.IOFSwitch.PortChangeEvent;
import org.onlab.onos.of.controller.impl.Role;
import org.onlab.onos.of.controller.impl.annotations.LogMessageDoc;
import org.onlab.onos.of.controller.impl.annotations.LogMessageDocs;
import org.onlab.onos.of.controller.impl.debugcounter.IDebugCounterService.CounterException;
import org.onlab.onos.of.controller.impl.internal.Controller.Counters;
import org.onlab.onos.of.controller.impl.internal.OFChannelHandler.ChannelState.RoleReplyInfo;
import org.jboss.netty.channel.Channel;
import org.jboss.netty.channel.ChannelHandlerContext;
import org.jboss.netty.channel.ChannelStateEvent;
......@@ -27,12 +17,14 @@ import org.jboss.netty.channel.MessageEvent;
import org.jboss.netty.handler.timeout.IdleStateAwareChannelHandler;
import org.jboss.netty.handler.timeout.IdleStateEvent;
import org.jboss.netty.handler.timeout.ReadTimeoutException;
import org.onlab.onos.of.controller.RoleState;
import org.onlab.onos.of.controller.impl.annotations.LogMessageDoc;
import org.onlab.onos.of.controller.impl.annotations.LogMessageDocs;
import org.projectfloodlight.openflow.exceptions.OFParseError;
import org.projectfloodlight.openflow.protocol.OFAsyncGetReply;
import org.projectfloodlight.openflow.protocol.OFBadRequestCode;
import org.projectfloodlight.openflow.protocol.OFBarrierReply;
import org.projectfloodlight.openflow.protocol.OFBarrierRequest;
import org.projectfloodlight.openflow.protocol.OFControllerRole;
import org.projectfloodlight.openflow.protocol.OFDescStatsReply;
import org.projectfloodlight.openflow.protocol.OFDescStatsRequest;
import org.projectfloodlight.openflow.protocol.OFEchoReply;
......@@ -49,15 +41,12 @@ import org.projectfloodlight.openflow.protocol.OFGetConfigRequest;
import org.projectfloodlight.openflow.protocol.OFHello;
import org.projectfloodlight.openflow.protocol.OFHelloElem;
import org.projectfloodlight.openflow.protocol.OFMessage;
import org.projectfloodlight.openflow.protocol.OFNiciraControllerRole;
import org.projectfloodlight.openflow.protocol.OFNiciraControllerRoleReply;
import org.projectfloodlight.openflow.protocol.OFPacketIn;
import org.projectfloodlight.openflow.protocol.OFPortDescStatsReply;
import org.projectfloodlight.openflow.protocol.OFPortDescStatsRequest;
import org.projectfloodlight.openflow.protocol.OFPortStatus;
import org.projectfloodlight.openflow.protocol.OFQueueGetConfigReply;
import org.projectfloodlight.openflow.protocol.OFRoleReply;
import org.projectfloodlight.openflow.protocol.OFRoleRequest;
import org.projectfloodlight.openflow.protocol.OFSetConfig;
import org.projectfloodlight.openflow.protocol.OFStatsReply;
import org.projectfloodlight.openflow.protocol.OFStatsReplyFlags;
......@@ -66,11 +55,10 @@ import org.projectfloodlight.openflow.protocol.OFType;
import org.projectfloodlight.openflow.protocol.OFVersion;
import org.projectfloodlight.openflow.protocol.errormsg.OFBadRequestErrorMsg;
import org.projectfloodlight.openflow.protocol.errormsg.OFFlowModFailedErrorMsg;
import org.projectfloodlight.openflow.protocol.errormsg.OFRoleRequestFailedErrorMsg;
import org.projectfloodlight.openflow.types.U32;
import org.projectfloodlight.openflow.types.U64;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
/**
* Channel handler deals with the switch connection and dispatches
* switch messages to the appropriate locations.
......@@ -79,18 +67,13 @@ class OFChannelHandler extends IdleStateAwareChannelHandler {
private static final Logger log = LoggerFactory.getLogger(OFChannelHandler.class);
private static final long DEFAULT_ROLE_TIMEOUT_MS = 2 * 1000; // 10 sec
private final Controller controller;
private final Counters counters;
private IOFSwitch sw;
private AbstractOpenFlowSwitch sw;
private long thisdpid; // channelHandler cached value of connected switch id
private Channel channel;
// State needs to be volatile because the HandshakeTimeoutHandler
// needs to check if the handshake is complete
private volatile ChannelState state;
// All role messaging is handled by the roleChanger. The channel state machine
// coordinates between the roleChanger and the controller-global-registry-service
// to determine controller roles per switch.
private RoleChanger roleChanger;
// Used to coordinate between the controller and the cleanup thread(?)
// for access to the global registry on a per switch basis.
volatile Boolean controlRequested;
......@@ -125,8 +108,6 @@ class OFChannelHandler extends IdleStateAwareChannelHandler {
*/
OFChannelHandler(Controller controller) {
this.controller = controller;
this.counters = controller.getCounters();
this.roleChanger = new RoleChanger(DEFAULT_ROLE_TIMEOUT_MS);
this.state = ChannelState.INIT;
this.pendingPortStatusMsg = new CopyOnWriteArrayList<OFPortStatus>();
factory13 = controller.getOFMessageFactory13();
......@@ -135,392 +116,14 @@ class OFChannelHandler extends IdleStateAwareChannelHandler {
duplicateDpidFound = Boolean.FALSE;
}
//*******************
// Role Handling
//*******************
/**
* When we remove a pending role request we use this enum to indicate how we
* arrived at the decision. When we send a role request to the switch, we
* also use this enum to indicate what we expect back from the switch, so the
* role changer can match the reply to our expectation.
*/
public enum RoleRecvStatus {
/** The switch returned an error indicating that roles are not.
* supported*/
UNSUPPORTED,
/** The request timed out. */
NO_REPLY,
/** The reply was old, there is a newer request pending. */
OLD_REPLY,
/**
* The reply's role matched the role that this controller set in the
* request message - invoked either initially at startup or to reassert
* current role.
*/
MATCHED_CURRENT_ROLE,
/**
* The reply's role matched the role that this controller set in the
* request message - this is the result of a callback from the
* global registry, followed by a role request sent to the switch.
*/
MATCHED_SET_ROLE,
/**
* The reply's role was a response to the query made by this controller.
*/
REPLY_QUERY,
/** We received a role reply message from the switch
* but the expectation was unclear, or there was no expectation.
*/
OTHER_EXPECTATION,
}
/**
* Forwards to RoleChanger. See there.
* @param role
*/
public void sendRoleRequest(Role role, RoleRecvStatus expectation) {
try {
roleChanger.sendRoleRequest(role, expectation);
} catch (IOException e) {
log.error("Disconnecting switch {} due to IO Error: {}",
getSwitchInfoString(), e.getMessage());
channel.close();
}
}
// XXX S consider if necessary
public void disconnectSwitch() {
sw.disconnectSwitch();
}
/**
* A utility class to handle role requests and replies for this channel.
* After a role request is submitted the role changer keeps track of the
* pending request, collects the reply (if any) and times out the request
* if necessary.
*
* To simplify role handling we only keep track of the /last/ pending
* role reply send to the switch. If multiple requests are pending and
* we receive replies for earlier requests we ignore them. However, this
* way of handling pending requests implies that we could wait forever if
* a new request is submitted before the timeout triggers. If necessary
* we could work around that though.
*/
private class RoleChanger {
// indicates that a request is currently pending
// needs to be volatile to allow correct double-check idiom
private volatile boolean requestPending;
// the transaction Id of the pending request
private int pendingXid;
// the role that's pending
private Role pendingRole;
// system time in MS when we send the request
private long roleSubmitTime;
// the timeout to use
private final long roleTimeoutMs;
// the expectation set by the caller for the returned role
private RoleRecvStatus expectation;
public RoleChanger(long roleTimeoutMs) {
this.requestPending = false;
this.roleSubmitTime = 0;
this.pendingXid = -1;
this.pendingRole = null;
this.roleTimeoutMs = roleTimeoutMs;
this.expectation = RoleRecvStatus.MATCHED_CURRENT_ROLE;
}
/**
* Send NX role request message to the switch requesting the specified
* role.
*
* @param sw switch to send the role request message to
* @param role role to request
*/
private int sendNxRoleRequest(Role role) throws IOException {
// Convert the role enum to the appropriate role to send
OFNiciraControllerRole roleToSend = OFNiciraControllerRole.ROLE_OTHER;
switch (role) {
case MASTER:
roleToSend = OFNiciraControllerRole.ROLE_MASTER;
break;
case SLAVE:
case EQUAL:
default:
// ensuring that the only two roles sent to 1.0 switches with
// Nicira role support, are MASTER and SLAVE
roleToSend = OFNiciraControllerRole.ROLE_SLAVE;
log.warn("Sending Nx Role.SLAVE to switch {}.", sw);
}
int xid = sw.getNextTransactionId();
OFExperimenter roleRequest = factory10
.buildNiciraControllerRoleRequest()
.setXid(xid)
.setRole(roleToSend)
.build();
sw.write(Collections.<OFMessage>singletonList(roleRequest));
return xid;
}
private int sendOF13RoleRequest(Role role) throws IOException {
// Convert the role enum to the appropriate role to send
OFControllerRole roleToSend = OFControllerRole.ROLE_NOCHANGE;
switch (role) {
case EQUAL:
roleToSend = OFControllerRole.ROLE_EQUAL;
break;
case MASTER:
roleToSend = OFControllerRole.ROLE_MASTER;
break;
case SLAVE:
roleToSend = OFControllerRole.ROLE_SLAVE;
break;
default:
log.warn("Sending default role.noChange to switch {}."
+ " Should only be used for queries.", sw);
}
int xid = sw.getNextTransactionId();
OFRoleRequest rrm = factory13
.buildRoleRequest()
.setRole(roleToSend)
.setXid(xid)
.setGenerationId(sw.getNextGenerationId())
.build();
sw.write(rrm);
return xid;
}
/**
* Send a role request with the given role to the switch and update
* the pending request and timestamp.
* Sends an OFPT_ROLE_REQUEST to an OF1.3 switch, OR
* Sends an NX_ROLE_REQUEST to an OF1.0 switch if configured to support it
* in the IOFSwitch driver. If not supported, this method sends nothing
* and returns 'false'. The caller should take appropriate action.
*
* One other optimization we do here is that for OF1.0 switches with
* Nicira role message support, we force the Role.EQUAL to become
* Role.SLAVE, as there is no defined behavior for the Nicira role OTHER.
* We cannot expect it to behave like SLAVE. We don't have this problem with
* OF1.3 switches, because Role.EQUAL is well defined and we can simulate
* SLAVE behavior by using ASYNC messages.
*
* @param role
* @throws IOException
* @returns false if and only if the switch does not support role-request
* messages, according to the switch driver; true otherwise.
*/
synchronized boolean sendRoleRequest(Role role, RoleRecvStatus exp)
throws IOException {
this.expectation = exp;
if (ofVersion == OFVersion.OF_10) {
Boolean supportsNxRole = (Boolean)
sw.getAttribute(IOFSwitch.SWITCH_SUPPORTS_NX_ROLE);
if (!supportsNxRole) {
log.debug("Switch driver indicates no support for Nicira "
+ "role request messages. Not sending ...");
state.handleUnsentRoleMessage(OFChannelHandler.this, role,
expectation);
return false;
}
// OF1.0 switch with support for NX_ROLE_REQUEST vendor extn.
// make Role.EQUAL become Role.SLAVE
role = (role == Role.EQUAL) ? Role.SLAVE : role;
pendingXid = sendNxRoleRequest(role);
pendingRole = role;
roleSubmitTime = System.currentTimeMillis();
requestPending = true;
} else {
// OF1.3 switch, use OFPT_ROLE_REQUEST message
pendingXid = sendOF13RoleRequest(role);
pendingRole = role;
roleSubmitTime = System.currentTimeMillis();
requestPending = true;
}
return true;
}
/**
* Deliver a received role reply.
*
* Check if a request is pending and if the received reply matches the
* the expected pending reply (we check both role and xid) we set
* the role for the switch/channel.
*
* If a request is pending but doesn't match the reply we ignore it, and
* return
*
* If no request is pending we disconnect with a SwitchStateException
*
* @param RoleReplyInfo information about role-reply in format that
* controller can understand.
* @throws SwitchStateException if no request is pending
*/
synchronized RoleRecvStatus deliverRoleReply(RoleReplyInfo rri)
throws SwitchStateException {
if (!requestPending) {
Role currentRole = (sw != null) ? sw.getRole() : null;
if (currentRole != null) {
if (currentRole == rri.getRole()) {
// Don't disconnect if the role reply we received is
// for the same role we are already in.
log.debug("Received unexpected RoleReply from "
+ "Switch: {} in State: {}. "
+ "Role in reply is same as current role of this "
+ "controller for this sw. Ignoring ...",
getSwitchInfoString(), state.toString());
return RoleRecvStatus.OTHER_EXPECTATION;
} else {
String msg = String.format("Switch: [%s], State: [%s], "
+ "received unexpected RoleReply[%s]. "
+ "No roles are pending, and this controller's "
+ "current role:[%s] does not match reply. "
+ "Disconnecting switch ... ",
OFChannelHandler.this.getSwitchInfoString(),
OFChannelHandler.this.state.toString(),
rri, currentRole);
throw new SwitchStateException(msg);
}
}
log.debug("Received unexpected RoleReply {} from "
+ "Switch: {} in State: {}. "
+ "This controller has no current role for this sw. "
+ "Ignoring ...", new Object[] {rri,
getSwitchInfoString(), state});
return RoleRecvStatus.OTHER_EXPECTATION;
}
int xid = (int) rri.getXid();
Role role = rri.getRole();
// XXX S should check generation id meaningfully and other cases of expectations
// U64 genId = rri.getGenId();
if (pendingXid != xid) {
log.debug("Received older role reply from " +
"switch {} ({}). Ignoring. " +
"Waiting for {}, xid={}",
new Object[] {getSwitchInfoString(), rri,
pendingRole, pendingXid });
return RoleRecvStatus.OLD_REPLY;
}
if (pendingRole == role) {
log.debug("Received role reply message from {} that matched "
+ "expected role-reply {} with expectations {}",
new Object[] {getSwitchInfoString(), role, expectation});
counters.roleReplyReceived.updateCounterWithFlush();
//setSwitchRole(role, RoleRecvStatus.RECEIVED_REPLY); dont want to set state here
if (expectation == RoleRecvStatus.MATCHED_CURRENT_ROLE ||
expectation == RoleRecvStatus.MATCHED_SET_ROLE) {
return expectation;
} else {
return RoleRecvStatus.OTHER_EXPECTATION;
}
}
// if xids match but role's don't, perhaps its a query (OF1.3)
if (expectation == RoleRecvStatus.REPLY_QUERY) {
return expectation;
}
return RoleRecvStatus.OTHER_EXPECTATION;
}
/**
* Called if we receive an error message. If the xid matches the
* pending request we handle it otherwise we ignore it.
*
* Note: since we only keep the last pending request we might get
* error messages for earlier role requests that we won't be able
* to handle
*/
synchronized RoleRecvStatus deliverError(OFErrorMsg error)
throws SwitchStateException {
if (!requestPending) {
log.debug("Received an error msg from sw {}, but no pending "
+ "requests in role-changer; not handling ...",
getSwitchInfoString());
return RoleRecvStatus.OTHER_EXPECTATION;
}
if (pendingXid != error.getXid()) {
if (error.getErrType() == OFErrorType.ROLE_REQUEST_FAILED) {
log.debug("Received an error msg from sw {} for a role request,"
+ " but not for pending request in role-changer; "
+ " ignoring error {} ...",
getSwitchInfoString(), error);
}
return RoleRecvStatus.OTHER_EXPECTATION;
}
// it is an error related to a currently pending role request message
if (error.getErrType() == OFErrorType.BAD_REQUEST) {
counters.roleReplyErrorUnsupported.updateCounterWithFlush();
log.error("Received a error msg {} from sw {} in state {} for "
+ "pending role request {}. Switch driver indicates "
+ "role-messaging is supported. Possible issues in "
+ "switch driver configuration?", new Object[] {
((OFBadRequestErrorMsg) error).toString(),
getSwitchInfoString(), state, pendingRole
});
return RoleRecvStatus.UNSUPPORTED;
}
if (error.getErrType() == OFErrorType.ROLE_REQUEST_FAILED) {
OFRoleRequestFailedErrorMsg rrerr =
(OFRoleRequestFailedErrorMsg) error;
switch (rrerr.getCode()) {
case BAD_ROLE:
// switch says that current-role-req has bad role?
// for now we disconnect
// fall-thru
case STALE:
// switch says that current-role-req has stale gen-id?
// for now we disconnect
// fall-thru
case UNSUP:
// switch says that current-role-req has role that
// cannot be supported? for now we disconnect
String msgx = String.format("Switch: [%s], State: [%s], "
+ "received Error to for pending role request [%s]. "
+ "Error:[%s]. Disconnecting switch ... ",
OFChannelHandler.this.getSwitchInfoString(),
OFChannelHandler.this.state.toString(),
pendingRole, rrerr);
throw new SwitchStateException(msgx);
default:
break;
}
}
// This error message was for a role request message but we dont know
// how to handle errors for nicira role request messages
return RoleRecvStatus.OTHER_EXPECTATION;
}
/**
* Check if a pending role request has timed out.
*/
void checkTimeout() {
if (!requestPending) {
return;
}
synchronized (this) {
if (!requestPending) {
return;
}
long now = System.currentTimeMillis();
if (now - roleSubmitTime > roleTimeoutMs) {
// timeout triggered.
counters.roleReplyTimeout.updateCounterWithFlush();
//setSwitchRole(pendingRole, RoleRecvStatus.NO_REPLY);
// XXX S come back to this
}
}
}
}
//*************************
// Channel State Machine
......@@ -628,8 +231,7 @@ class OFChannelHandler extends IdleStateAwareChannelHandler {
log.info("Received features reply for switch at {} with dpid {}",
h.getSwitchInfoString(), h.thisdpid);
//update the controller about this connected switch
boolean success = h.controller.addConnectedSwitch(
h.thisdpid, h);
boolean success = h.sw.addConnectedSwitch();
if (!success) {
disconnectDuplicate(h);
return;
......@@ -825,41 +427,16 @@ class OFChannelHandler extends IdleStateAwareChannelHandler {
h.sw.setConnected(true);
h.sw.setChannel(h.channel);
try {
h.sw.setDebugCounterService(h.controller.getDebugCounter());
} catch (CounterException e) {
h.counters.switchCounterRegistrationFailed
.updateCounterNoFlush();
log.warn("Could not register counters for switch {} ",
h.getSwitchInfoString(), e);
}
log.info("Switch {} bound to class {}, description {}",
new Object[] {h.sw, h.sw.getClass(), drep });
//Put switch in EQUAL mode until we hear back from the global registry
log.debug("Setting new switch {} to EQUAL and sending Role request",
h.sw.getStringId());
h.setSwitchRole(Role.EQUAL);
try {
boolean supportsRRMsg = h.roleChanger.sendRoleRequest(Role.EQUAL,
RoleRecvStatus.MATCHED_CURRENT_ROLE);
if (!supportsRRMsg) {
log.warn("Switch {} does not support role request messages "
+ "of any kind. No role messages were sent. "
+ "This controller instance SHOULD become MASTER "
+ "from the registry process. ",
h.getSwitchInfoString());
}
h.setState(WAIT_INITIAL_ROLE);
// request control of switch from global registry -
// necessary even if this is the only controller the
// switch is connected to.
h.controller.submitRegistryRequest(h.sw.getId());
} catch (IOException e) {
log.error("Exception when sending role request: {} ",
e.getMessage());
// FIXME shouldn't we disconnect?
}
h.setSwitchRole(RoleState.EQUAL);
h.sw.startDriverHandshake();
h.setState(WAIT_SWITCH_DRIVER_SUB_HANDSHAKE);
}
@Override
......@@ -880,133 +457,6 @@ class OFChannelHandler extends IdleStateAwareChannelHandler {
}
},
/**
* We are waiting for a role reply message in response to a role request
* sent after hearing back from the registry service -- OR -- we are
* just waiting to hear back from the registry service in the case that
* the switch does not support role messages. If completed successfully,
* the controller's role for this switch will be set here.
* Before we move to the state corresponding to the role, we allow the
* switch specific driver to complete its configuration. This configuration
* typically depends on the role the controller is playing for this switch.
* And so we set the switch role (for 'this' controller) before we start
* the driver-sub-handshake.
* Next State: WAIT_SWITCH_DRIVER_SUB_HANDSHAKE
*/
WAIT_INITIAL_ROLE(false) {
@Override
void processOFError(OFChannelHandler h, OFErrorMsg m)
throws SwitchStateException {
// role changer will ignore the error if it isn't for it
RoleRecvStatus rrstatus = h.roleChanger.deliverError(m);
if (rrstatus == RoleRecvStatus.OTHER_EXPECTATION) {
logError(h, m);
}
}
@Override
void processOFExperimenter(OFChannelHandler h, OFExperimenter m)
throws IOException, SwitchStateException {
Role role = extractNiciraRoleReply(h, m);
// If role == null it means the vendor (experimenter) message
// wasn't really a Nicira role reply. We ignore this case.
if (role != null) {
RoleReplyInfo rri = new RoleReplyInfo(role, null, m.getXid());
RoleRecvStatus rrs = h.roleChanger.deliverRoleReply(rri);
if (rrs == RoleRecvStatus.MATCHED_SET_ROLE) {
setRoleAndStartDriverHandshake(h, rri.getRole());
} // else do nothing - wait for the correct expected reply
} else {
unhandledMessageReceived(h, m);
}
}
@Override
void processOFRoleReply(OFChannelHandler h, OFRoleReply m)
throws SwitchStateException, IOException {
RoleReplyInfo rri = extractOFRoleReply(h, m);
RoleRecvStatus rrs = h.roleChanger.deliverRoleReply(rri);
if (rrs == RoleRecvStatus.MATCHED_SET_ROLE) {
setRoleAndStartDriverHandshake(h, rri.getRole());
} // else do nothing - wait for the correct expected reply
}
@Override
void handleUnsentRoleMessage(OFChannelHandler h, Role role,
RoleRecvStatus expectation) throws IOException {
// typically this is triggered for a switch where role messages
// are not supported - we confirm that the role being set is
// master and move to the next state
if (expectation == RoleRecvStatus.MATCHED_SET_ROLE) {
if (role == Role.MASTER) {
setRoleAndStartDriverHandshake(h, role);
} else {
log.error("Expected MASTER role from registry for switch "
+ "which has no support for role-messages."
+ "Received {}. It is possible that this switch "
+ "is connected to other controllers, in which "
+ "case it should support role messages - not "
+ "moving forward.", role);
}
} // else do nothing - wait to hear back from registry
}
private void setRoleAndStartDriverHandshake(OFChannelHandler h,
Role role) throws IOException {
h.setSwitchRole(role);
h.sw.startDriverHandshake();
if (h.sw.isDriverHandshakeComplete()) {
Role mySwitchRole = h.sw.getRole();
if (mySwitchRole == Role.MASTER) {
log.info("Switch-driver sub-handshake complete. "
+ "Activating switch {} with Role: MASTER",
h.getSwitchInfoString());
handlePendingPortStatusMessages(h); //before activation
boolean success = h.controller.addActivatedMasterSwitch(
h.sw.getId(), h.sw);
if (!success) {
disconnectDuplicate(h);
return;
}
h.setState(MASTER);
} else {
log.info("Switch-driver sub-handshake complete. "
+ "Activating switch {} with Role: EQUAL",
h.getSwitchInfoString());
handlePendingPortStatusMessages(h); //before activation
boolean success = h.controller.addActivatedEqualSwitch(
h.sw.getId(), h.sw);
if (!success) {
disconnectDuplicate(h);
return;
}
h.setState(EQUAL);
}
} else {
h.setState(WAIT_SWITCH_DRIVER_SUB_HANDSHAKE);
}
}
@Override
void processOFFeaturesReply(OFChannelHandler h, OFFeaturesReply m)
throws IOException, SwitchStateException {
illegalMessageReceived(h, m);
}
@Override
void processOFStatisticsReply(OFChannelHandler h, OFStatsReply m)
throws SwitchStateException {
illegalMessageReceived(h, m);
}
@Override
void processOFPortStatus(OFChannelHandler h, OFPortStatus m)
throws IOException, SwitchStateException {
h.pendingPortStatusMsg.add(m);
}
},
/**
* We are waiting for the respective switch driver to complete its
......@@ -1026,39 +476,27 @@ class OFChannelHandler extends IdleStateAwareChannelHandler {
@Override
void processOFMessage(OFChannelHandler h, OFMessage m)
throws IOException {
throws IOException, SwitchStateException {
if (m.getType() == OFType.ECHO_REQUEST) {
processOFEchoRequest(h, (OFEchoRequest) m);
} else {
// FIXME: other message to handle here?
} else if (m.getType() == OFType.ROLE_REPLY) {
h.sw.handleRole(m);
} else if (m.getType() == OFType.ERROR) {
if (!h.sw.handleRoleError((OFErrorMsg)m)) {
h.sw.processDriverHandshakeMessage(m);
if (h.sw.isDriverHandshakeComplete()) {
// consult the h.sw role and goto that state
Role mySwitchRole = h.sw.getRole();
if (mySwitchRole == Role.MASTER) {
log.info("Switch-driver sub-handshake complete. "
+ "Activating switch {} with Role: MASTER",
h.getSwitchInfoString());
handlePendingPortStatusMessages(h); //before activation
boolean success = h.controller.addActivatedMasterSwitch(
h.sw.getId(), h.sw);
if (!success) {
disconnectDuplicate(h);
return;
h.setState(ACTIVE);
}
h.setState(MASTER);
} else {
log.info("Switch-driver sub-handshake complete. "
+ "Activating switch {} with Role: EQUAL",
h.getSwitchInfoString());
handlePendingPortStatusMessages(h); //before activation
boolean success = h.controller.addActivatedEqualSwitch(
h.sw.getId(), h.sw);
if (!success) {
disconnectDuplicate(h);
return;
}
h.setState(EQUAL);
} else {
if (m.getType() == OFType.EXPERIMENTER &&
((OFExperimenter) m).getExperimenter() ==
RoleManager.NICIRA_EXPERIMENTER) {
h.sw.handleNiciraRole(m);
} else {
h.sw.processDriverHandshakeMessage(m);
if (h.sw.isDriverHandshakeComplete()) {
h.setState(ACTIVE);
}
}
}
......@@ -1084,7 +522,7 @@ class OFChannelHandler extends IdleStateAwareChannelHandler {
* if we send a role request for SLAVE /and/ receive the role reply for
* SLAVE.
*/
MASTER(true) {
ACTIVE(true) {
@LogMessageDoc(level = "WARN",
message = "Received permission error from switch {} while"
+ "being master. Reasserting master role.",
......@@ -1097,13 +535,6 @@ class OFChannelHandler extends IdleStateAwareChannelHandler {
@Override
void processOFError(OFChannelHandler h, OFErrorMsg m)
throws IOException, SwitchStateException {
// first check if the error msg is in response to a role-request message
RoleRecvStatus rrstatus = h.roleChanger.deliverError(m);
if (rrstatus != RoleRecvStatus.OTHER_EXPECTATION) {
// rolechanger has handled the error message - we are done
return;
}
// if we get here, then the error message is for something else
if (m.getErrType() == OFErrorType.BAD_REQUEST &&
((OFBadRequestErrorMsg) m).getCode() ==
......@@ -1116,13 +547,10 @@ class OFChannelHandler extends IdleStateAwareChannelHandler {
// if two controllers are master (even if its only for
// a brief period). We might need to see if these errors
// persist before we reassert
h.counters.epermErrorWhileSwitchIsMaster.updateCounterWithFlush();
log.warn("Received permission error from switch {} while" +
"being master. Reasserting master role.",
h.getSwitchInfoString());
//h.controller.reassertRole(h, Role.MASTER);
// XXX S reassert in role changer or reconsider if all this
// stuff is really needed
h.sw.reassertRole();
} else if (m.getErrType() == OFErrorType.FLOW_MOD_FAILED &&
((OFFlowModFailedErrorMsg) m).getCode() ==
OFFlowModFailedCode.ALL_TABLES_FULL) {
......@@ -1136,35 +564,19 @@ class OFChannelHandler extends IdleStateAwareChannelHandler {
@Override
void processOFStatisticsReply(OFChannelHandler h,
OFStatsReply m) {
h.sw.deliverStatisticsReply(m);
h.sw.handleMessage(m);
}
@Override
void processOFExperimenter(OFChannelHandler h, OFExperimenter m)
throws IOException, SwitchStateException {
Role role = extractNiciraRoleReply(h, m);
if (role == null) {
// The message wasn't really a Nicira role reply. We just
// dispatch it to the OFMessage listeners in this case.
h.dispatchMessage(m);
return;
}
RoleRecvStatus rrs = h.roleChanger.deliverRoleReply(
new RoleReplyInfo(role, null, m.getXid()));
if (rrs == RoleRecvStatus.MATCHED_SET_ROLE) {
checkAndSetRoleTransition(h, role);
}
h.sw.handleNiciraRole(m);
}
@Override
void processOFRoleReply(OFChannelHandler h, OFRoleReply m)
throws SwitchStateException, IOException {
RoleReplyInfo rri = extractOFRoleReply(h, m);
RoleRecvStatus rrs = h.roleChanger.deliverRoleReply(rri);
if (rrs == RoleRecvStatus.MATCHED_SET_ROLE) {
checkAndSetRoleTransition(h, rri.getRole());
}
h.sw.handleRole(m);
}
@Override
......@@ -1192,95 +604,6 @@ class OFChannelHandler extends IdleStateAwareChannelHandler {
h.dispatchMessage(m);
}
},
/**
* This controller is in EQUAL role for this switch. We enter this state
* after some /other/ controller instance wins mastership-role over this
* switch. The EQUAL role can be considered the same as the SLAVE role
* if this controller does NOT send commands or packets to the switch.
* This should always be true for OF1.0 switches. XXX S need to enforce.
*
* For OF1.3 switches, choosing this state as EQUAL instead of SLAVE,
* gives us the flexibility that if an app wants to send commands/packets
* to switches, it can, even thought it is running on a controller instance
* that is not in a MASTER role for this switch. Of course, it is the job
* of the app to ensure that commands/packets sent by this (EQUAL) controller
* instance does not clash/conflict with commands/packets sent by the MASTER
* controller for this switch. Neither the controller instances, nor the
* switch provides any kind of resolution mechanism should conflicts occur.
*/
EQUAL(true) {
@Override
void processOFError(OFChannelHandler h, OFErrorMsg m)
throws IOException, SwitchStateException {
// role changer will ignore the error if it isn't for it
RoleRecvStatus rrstatus = h.roleChanger.deliverError(m);
if (rrstatus == RoleRecvStatus.OTHER_EXPECTATION) {
logError(h, m);
h.dispatchMessage(m);
}
}
@Override
void processOFStatisticsReply(OFChannelHandler h,
OFStatsReply m) {
h.sw.deliverStatisticsReply(m);
}
@Override
void processOFExperimenter(OFChannelHandler h, OFExperimenter m)
throws IOException, SwitchStateException {
Role role = extractNiciraRoleReply(h, m);
// If role == null it means the message wasn't really a
// Nicira role reply. We ignore it in this state.
if (role != null) {
RoleRecvStatus rrs = h.roleChanger.deliverRoleReply(
new RoleReplyInfo(role, null, m.getXid()));
if (rrs == RoleRecvStatus.MATCHED_SET_ROLE) {
checkAndSetRoleTransition(h, role);
}
} else {
unhandledMessageReceived(h, m);
}
}
@Override
void processOFRoleReply(OFChannelHandler h, OFRoleReply m)
throws SwitchStateException, IOException {
RoleReplyInfo rri = extractOFRoleReply(h, m);
RoleRecvStatus rrs = h.roleChanger.deliverRoleReply(rri);
if (rrs == RoleRecvStatus.MATCHED_SET_ROLE) {
checkAndSetRoleTransition(h, rri.getRole());
}
}
// XXX S needs more handlers for 1.3 switches in equal role
@Override
void processOFPortStatus(OFChannelHandler h, OFPortStatus m)
throws IOException, SwitchStateException {
handlePortStatusMessage(h, m, true);
}
@Override
@LogMessageDoc(level = "WARN",
message = "Received PacketIn from switch {} while "
+ "being slave. Reasserting slave role.",
explanation = "The switch has receive a PacketIn despite being "
+ "in slave role indicating inconsistent controller roles",
recommendation = "This situation can occurs transiently during role"
+ " changes. If, however, the condition persists or happens"
+ " frequently this indicates a role inconsistency. "
+ LogMessageDoc.CHECK_CONTROLLER)
void processOFPacketIn(OFChannelHandler h, OFPacketIn m) throws IOException {
// we don't expect packetIn while slave, reassert we are slave
h.counters.packetInWhileSwitchIsSlave.updateCounterNoFlush();
log.warn("Received PacketIn from switch {} while" +
"being slave. Reasserting slave role.", h.sw);
//h.controller.reassertRole(h, Role.SLAVE);
// XXX reassert in role changer
}
};
private final boolean handshakeComplete;
......@@ -1345,7 +668,6 @@ class OFChannelHandler extends IdleStateAwareChannelHandler {
*/
protected void unhandledMessageReceived(OFChannelHandler h,
OFMessage m) {
h.counters.unhandledMessage.updateCounterNoFlush();
if (log.isDebugEnabled()) {
String msg = getSwitchStateMessage(h, m,
"Ignoring unexpected message");
......@@ -1398,108 +720,7 @@ class OFChannelHandler extends IdleStateAwareChannelHandler {
h.channel.disconnect();
}
/**
* Extract the role from an OFVendor message.
*
* Extract the role from an OFVendor message if the message is a
* Nicira role reply. Otherwise return null.
*
* @param h The channel handler receiving the message
* @param vendorMessage The vendor message to parse.
* @return The role in the message if the message is a Nicira role
* reply, null otherwise.
* @throws SwitchStateException If the message is a Nicira role reply
* but the numeric role value is unknown.
*/
protected Role extractNiciraRoleReply(OFChannelHandler h,
OFExperimenter experimenterMsg) throws SwitchStateException {
int vendor = (int) experimenterMsg.getExperimenter();
if (vendor != 0x2320) {
return null;
}
OFNiciraControllerRoleReply nrr =
(OFNiciraControllerRoleReply) experimenterMsg;
Role role = null;
OFNiciraControllerRole ncr = nrr.getRole();
switch(ncr) {
case ROLE_MASTER:
role = Role.MASTER;
break;
case ROLE_OTHER:
role = Role.EQUAL;
break;
case ROLE_SLAVE:
role = Role.SLAVE;
break;
default: //handled below
}
if (role == null) {
String msg = String.format("Switch: [%s], State: [%s], "
+ "received NX_ROLE_REPLY with invalid role "
+ "value %s",
h.getSwitchInfoString(),
this.toString(),
nrr.getRole());
throw new SwitchStateException(msg);
}
return role;
}
/**
* Helper class returns role reply information in the format understood
* by the controller.
*/
protected static class RoleReplyInfo {
private Role role;
private U64 genId;
private long xid;
RoleReplyInfo(Role role, U64 genId, long xid) {
this.role = role;
this.genId = genId;
this.xid = xid;
}
public Role getRole() { return role; }
public U64 getGenId() { return genId; }
public long getXid() { return xid; }
@Override
public String toString() {
return "[Role:" + role + " GenId:" + genId + " Xid:" + xid + "]";
}
}
/**
* Extract the role information from an OF1.3 Role Reply Message.
* @param h
* @param rrmsg
* @return RoleReplyInfo object
* @throws SwitchStateException
*/
protected RoleReplyInfo extractOFRoleReply(OFChannelHandler h,
OFRoleReply rrmsg) throws SwitchStateException {
OFControllerRole cr = rrmsg.getRole();
Role role = null;
switch(cr) {
case ROLE_EQUAL:
role = Role.EQUAL;
break;
case ROLE_MASTER:
role = Role.MASTER;
break;
case ROLE_SLAVE:
role = Role.SLAVE;
break;
case ROLE_NOCHANGE: // switch should send current role
default:
String msg = String.format("Unknown controller role %s "
+ "received from switch %s", cr, h.sw);
throw new SwitchStateException(msg);
}
return new RoleReplyInfo(role, rrmsg.getGenerationId(), rrmsg.getXid());
}
/**
* Handles all pending port status messages before a switch is declared
......@@ -1567,52 +788,9 @@ class OFChannelHandler extends IdleStateAwareChannelHandler {
throw new SwitchStateException(msg);
}
Collection<PortChangeEvent> changes = h.sw.processOFPortStatus(m);
if (doNotify) {
for (PortChangeEvent ev: changes) {
h.controller.notifyPortChanged(h.sw.getId(), ev.port, ev.type);
}
}
}
/**
* Checks if the role received (from the role-reply msg) is different
* from the existing role in the IOFSwitch object for this controller.
* If so, it transitions the controller to the new role. Note that
* the caller should have already verified that the role-reply msg
* received was in response to a role-request msg sent out by this
* controller after hearing from the registry service.
*
* @param h the ChannelHandler that received the message
* @param role the role in the recieved role reply message
*/
protected void checkAndSetRoleTransition(OFChannelHandler h, Role role) {
// we received a role-reply in response to a role message
// sent after hearing from the registry service. It is
// possible that the role of this controller instance for
// this switch has changed:
// for 1.0 switch: from MASTER to SLAVE
// for 1.3 switch: from MASTER to EQUAL
if ((h.sw.getRole() == Role.MASTER && role == Role.SLAVE) ||
(h.sw.getRole() == Role.MASTER && role == Role.EQUAL)) {
// the mastership has changed
h.sw.setRole(role);
h.setState(EQUAL);
h.controller.transitionToEqualSwitch(h.sw.getId());
return;
h.sw.handleMessage(m);
}
// or for both 1.0 and 1.3 switches from EQUAL to MASTER.
// note that for 1.0, even though we mean SLAVE,
// internally we call the role EQUAL.
if (h.sw.getRole() == Role.EQUAL && role == Role.MASTER) {
// the mastership has changed
h.sw.setRole(role);
h.setState(MASTER);
h.controller.transitionToMasterSwitch(h.sw.getId());
return;
}
}
/**
* Process an OF message received on the channel and
......@@ -1635,7 +813,6 @@ class OFChannelHandler extends IdleStateAwareChannelHandler {
*/
void processOFMessage(OFChannelHandler h, OFMessage m)
throws IOException, SwitchStateException {
h.roleChanger.checkTimeout();
switch(m.getType()) {
case HELLO:
processOFHello(h, (OFHello) m);
......@@ -1812,10 +989,6 @@ class OFChannelHandler extends IdleStateAwareChannelHandler {
unhandledMessageReceived(h, m);
}
void handleUnsentRoleMessage(OFChannelHandler h, Role role,
RoleRecvStatus expectation) throws IOException {
// do nothing in most states
}
}
......@@ -1830,7 +1003,6 @@ class OFChannelHandler extends IdleStateAwareChannelHandler {
+ "specified IP address")
public void channelConnected(ChannelHandlerContext ctx,
ChannelStateEvent e) throws Exception {
counters.switchConnected.updateCounterWithFlush();
channel = e.getChannel();
log.info("New switch connection from {}",
channel.getRemoteAddress());
......@@ -1853,7 +1025,7 @@ class OFChannelHandler extends IdleStateAwareChannelHandler {
// switch was a duplicate-dpid, calling the method below would clear
// all state for the original switch (with the same dpid),
// which we obviously don't want.
controller.removeConnectedSwitch(thisdpid);
sw.removeConnectedSwitch();
} else {
// A duplicate was disconnected on this ChannelHandler,
// this is the same switch reconnecting, but the original state was
......@@ -1914,12 +1086,10 @@ class OFChannelHandler extends IdleStateAwareChannelHandler {
// switch timeout
log.error("Disconnecting switch {} due to read timeout",
getSwitchInfoString());
counters.switchDisconnectReadTimeout.updateCounterWithFlush();
ctx.getChannel().close();
} else if (e.getCause() instanceof HandshakeTimeoutException) {
log.error("Disconnecting switch {}: failed to complete handshake",
getSwitchInfoString());
counters.switchDisconnectHandshakeTimeout.updateCounterWithFlush();
ctx.getChannel().close();
} else if (e.getCause() instanceof ClosedChannelException) {
log.debug("Channel for sw {} already closed", getSwitchInfoString());
......@@ -1930,7 +1100,6 @@ class OFChannelHandler extends IdleStateAwareChannelHandler {
// still print stack trace if debug is enabled
log.debug("StackTrace for previous Exception: ", e.getCause());
}
counters.switchDisconnectIOError.updateCounterWithFlush();
ctx.getChannel().close();
} else if (e.getCause() instanceof SwitchStateException) {
log.error("Disconnecting switch {} due to switch state error: {}",
......@@ -1939,23 +1108,19 @@ class OFChannelHandler extends IdleStateAwareChannelHandler {
// still print stack trace if debug is enabled
log.debug("StackTrace for previous Exception: ", e.getCause());
}
counters.switchDisconnectSwitchStateException.updateCounterWithFlush();
ctx.getChannel().close();
} else if (e.getCause() instanceof OFParseError) {
log.error("Disconnecting switch "
+ getSwitchInfoString() +
" due to message parse failure",
e.getCause());
counters.switchDisconnectParseError.updateCounterWithFlush();
ctx.getChannel().close();
} else if (e.getCause() instanceof RejectedExecutionException) {
log.warn("Could not process message: queue full");
counters.rejectedExecutionException.updateCounterWithFlush();
} else {
log.error("Error while processing message from switch "
+ getSwitchInfoString()
+ "state " + this.state, e.getCause());
counters.switchDisconnectOtherException.updateCounterWithFlush();
ctx.getChannel().close();
}
}
......@@ -1986,12 +1151,10 @@ class OFChannelHandler extends IdleStateAwareChannelHandler {
for (OFMessage ofm : msglist) {
counters.messageReceived.updateCounterNoFlush();
// Do the actual packet processing
state.processOFMessage(this, ofm);
}
} else {
counters.messageReceived.updateCounterNoFlush();
state.processOFMessage(this, (OFMessage) e.getMessage());
}
}
......@@ -2080,7 +1243,7 @@ class OFChannelHandler extends IdleStateAwareChannelHandler {
channel.write(Collections.singletonList(m));
}
private void setSwitchRole(Role role) {
private void setSwitchRole(RoleState role) {
sw.setRole(role);
}
......@@ -2146,9 +1309,4 @@ class OFChannelHandler extends IdleStateAwareChannelHandler {
return state;
}
void useRoleChangerWithOtherTimeoutForTesting(long roleTimeoutMs) {
roleChanger = new RoleChanger(roleTimeoutMs);
}
}
......
package org.onlab.onos.of.controller.impl.internal;
import java.util.ArrayList;
import java.util.concurrent.ConcurrentHashMap;
import java.util.concurrent.locks.Lock;
import java.util.concurrent.locks.ReentrantLock;
import org.apache.felix.scr.annotations.Activate;
import org.apache.felix.scr.annotations.Component;
import org.apache.felix.scr.annotations.Deactivate;
import org.apache.felix.scr.annotations.Service;
import org.onlab.onos.of.controller.Dpid;
import org.onlab.onos.of.controller.OpenFlowController;
import org.onlab.onos.of.controller.OpenFlowSwitch;
import org.onlab.onos.of.controller.OpenFlowSwitchListener;
import org.onlab.onos.of.controller.PacketListener;
import org.onlab.onos.of.controller.RoleState;
import org.projectfloodlight.openflow.protocol.OFMessage;
import org.projectfloodlight.openflow.util.HexString;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
@Component(immediate = true)
@Service
public class OpenFlowControllerImpl implements OpenFlowController {
protected ConcurrentHashMap<Long, OpenFlowSwitch> connectedSwitches;
protected ConcurrentHashMap<Long, OpenFlowSwitch> activeMasterSwitches;
protected ConcurrentHashMap<Long, OpenFlowSwitch> activeEqualSwitches;
protected OpenFlowSwitchAgent agent = new OpenFlowSwitchAgent();
protected ArrayList<OpenFlowSwitchListener> ofEventListener;
private final Controller ctrl = new Controller();
@Activate
public void activate() {
ctrl.start(agent);
}
@Deactivate
public void deactivate() {
ctrl.stop();
}
@Override
public Iterable<OpenFlowSwitch> getSwitches() {
return connectedSwitches.values();
}
@Override
public Iterable<OpenFlowSwitch> getMasterSwitches() {
return activeMasterSwitches.values();
}
@Override
public Iterable<OpenFlowSwitch> getEqualSwitches() {
return activeEqualSwitches.values();
}
@Override
public OpenFlowSwitch getSwitch(Dpid dpid) {
return connectedSwitches.get(dpid.value());
}
@Override
public OpenFlowSwitch getMasterSwitch(Dpid dpid) {
return activeMasterSwitches.get(dpid.value());
}
@Override
public OpenFlowSwitch getEqualSwitch(Dpid dpid) {
return activeEqualSwitches.get(dpid.value()); }
@Override
public void addListener(OpenFlowSwitchListener listener) {
if (!ofEventListener.contains(listener)) {
this.ofEventListener.add(listener);
}
}
@Override
public void removeListener(OpenFlowSwitchListener listener) {
this.ofEventListener.remove(listener);
}
@Override
public void addPacketListener(int priority, PacketListener listener) {
// TODO Auto-generated method stub
}
@Override
public void removePacketListener(PacketListener listener) {
// TODO Auto-generated method stub
}
@Override
public void write(Dpid dpid, OFMessage msg) {
this.getSwitch(dpid).write(msg);
}
@Override
public void processPacket(OFMessage msg) {
}
@Override
public void setRole(Dpid dpid, RoleState role) {
switch (role) {
case MASTER:
agent.transitionToMasterSwitch(dpid.value());
break;
case EQUAL:
agent.transitionToEqualSwitch(dpid.value());
break;
case SLAVE:
//agent.transitionToSlaveSwitch(dpid.value());
break;
default:
//WTF role is this?
}
}
public class OpenFlowSwitchAgent {
private final Logger log = LoggerFactory.getLogger(OpenFlowSwitchAgent.class);
private Lock switchLock = new ReentrantLock();
public boolean addConnectedSwitch(long dpid, AbstractOpenFlowSwitch sw) {
if (connectedSwitches.get(dpid) != null) {
log.error("Trying to add connectedSwitch but found a previous "
+ "value for dpid: {}", dpid);
return false;
} else {
log.error("Added switch {}", dpid);
connectedSwitches.put(dpid, sw);
for (OpenFlowSwitchListener l : ofEventListener) {
l.switchAdded(new Dpid(dpid));
}
return true;
}
}
private boolean validActivation(long dpid) {
if (connectedSwitches.get(dpid) == null) {
log.error("Trying to activate switch but is not in "
+ "connected switches: dpid {}. Aborting ..",
HexString.toHexString(dpid));
return false;
}
if (activeMasterSwitches.get(dpid) != null ||
activeEqualSwitches.get(dpid) != null) {
log.error("Trying to activate switch but it is already "
+ "activated: dpid {}. Found in activeMaster: {} "
+ "Found in activeEqual: {}. Aborting ..", new Object[] {
HexString.toHexString(dpid),
(activeMasterSwitches.get(dpid) == null) ? 'N' : 'Y',
(activeEqualSwitches.get(dpid) == null) ? 'N' : 'Y'});
return false;
}
return true;
}
/**
* Called when a switch is activated, with this controller's role as MASTER.
*/
protected boolean addActivatedMasterSwitch(long dpid, AbstractOpenFlowSwitch sw) {
switchLock.lock();
try {
if (!validActivation(dpid)) {
return false;
}
activeMasterSwitches.put(dpid, sw);
return true;
} finally {
switchLock.unlock();
}
}
/**
* Called when a switch is activated, with this controller's role as EQUAL.
*/
protected boolean addActivatedEqualSwitch(long dpid, AbstractOpenFlowSwitch sw) {
switchLock.lock();
try {
if (!validActivation(dpid)) {
return false;
}
activeEqualSwitches.put(dpid, sw);
return true;
} finally {
switchLock.unlock();
}
}
/**
* Called when this controller's role for a switch transitions from equal
* to master. For 1.0 switches, we internally refer to the role 'slave' as
* 'equal' - so this transition is equivalent to 'addActivatedMasterSwitch'.
*/
protected void transitionToMasterSwitch(long dpid) {
switchLock.lock();
try {
OpenFlowSwitch sw = activeEqualSwitches.remove(dpid);
if (sw == null) {
log.error("Transition to master called on sw {}, but switch "
+ "was not found in controller-cache", dpid);
return;
}
activeMasterSwitches.put(dpid, sw);
} finally {
switchLock.unlock();
}
}
/**
* Called when this controller's role for a switch transitions to equal.
* For 1.0 switches, we internally refer to the role 'slave' as
* 'equal'.
*/
protected void transitionToEqualSwitch(long dpid) {
switchLock.lock();
try {
OpenFlowSwitch sw = activeMasterSwitches.remove(dpid);
if (sw == null) {
log.error("Transition to equal called on sw {}, but switch "
+ "was not found in controller-cache", dpid);
return;
}
activeEqualSwitches.put(dpid, sw);
} finally {
switchLock.unlock();
}
}
/**
* Clear all state in controller switch maps for a switch that has
* disconnected from the local controller. Also release control for
* that switch from the global repository. Notify switch listeners.
*/
public void removeConnectedSwitch(long dpid) {
connectedSwitches.remove(dpid);
OpenFlowSwitch sw = activeMasterSwitches.remove(dpid);
if (sw == null) {
sw = activeEqualSwitches.remove(dpid);
}
for (OpenFlowSwitchListener l : ofEventListener) {
l.switchRemoved(new Dpid(dpid));
}
}
public void processMessage(OFMessage m) {
processPacket(m);
}
}
}
package org.onlab.onos.of.controller.impl.internal;
import java.io.IOException;
import java.util.Collections;
import java.util.concurrent.atomic.AtomicInteger;
import org.onlab.onos.of.controller.RoleState;
import org.projectfloodlight.openflow.protocol.OFControllerRole;
import org.projectfloodlight.openflow.protocol.OFErrorMsg;
import org.projectfloodlight.openflow.protocol.OFErrorType;
import org.projectfloodlight.openflow.protocol.OFExperimenter;
import org.projectfloodlight.openflow.protocol.OFFactories;
import org.projectfloodlight.openflow.protocol.OFMessage;
import org.projectfloodlight.openflow.protocol.OFNiciraControllerRole;
import org.projectfloodlight.openflow.protocol.OFNiciraControllerRoleReply;
import org.projectfloodlight.openflow.protocol.OFRoleReply;
import org.projectfloodlight.openflow.protocol.OFRoleRequest;
import org.projectfloodlight.openflow.protocol.OFVersion;
import org.projectfloodlight.openflow.protocol.errormsg.OFBadRequestErrorMsg;
import org.projectfloodlight.openflow.protocol.errormsg.OFRoleRequestFailedErrorMsg;
import org.projectfloodlight.openflow.types.U64;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
/**
* A utility class to handle role requests and replies for this channel.
* After a role request is submitted the role changer keeps track of the
* pending request, collects the reply (if any) and times out the request
* if necessary.
*
* To simplify role handling we only keep track of the /last/ pending
* role reply send to the switch. If multiple requests are pending and
* we receive replies for earlier requests we ignore them. However, this
* way of handling pending requests implies that we could wait forever if
* a new request is submitted before the timeout triggers. If necessary
* we could work around that though.
*/
class RoleManager {
protected static final long NICIRA_EXPERIMENTER = 0x2320;
private static Logger log = LoggerFactory.getLogger(RoleManager.class);
// indicates that a request is currently pending
// needs to be volatile to allow correct double-check idiom
private volatile boolean requestPending;
// the transaction Id of the pending request
private int pendingXid;
// the role that's pending
private RoleState pendingRole;
// the expectation set by the caller for the returned role
private RoleRecvStatus expectation;
private AtomicInteger xidCounter;
private AbstractOpenFlowSwitch sw;
public RoleManager(AbstractOpenFlowSwitch sw) {
this.requestPending = false;
this.pendingXid = -1;
this.pendingRole = null;
this.xidCounter = new AtomicInteger(0);
this.expectation = RoleRecvStatus.MATCHED_CURRENT_ROLE;
this.sw = sw;
}
/**
* Send NX role request message to the switch requesting the specified
* role.
*
* @param sw switch to send the role request message to
* @param role role to request
*/
private int sendNxRoleRequest(RoleState role) throws IOException {
// Convert the role enum to the appropriate role to send
OFNiciraControllerRole roleToSend = OFNiciraControllerRole.ROLE_OTHER;
switch (role) {
case MASTER:
roleToSend = OFNiciraControllerRole.ROLE_MASTER;
break;
case SLAVE:
case EQUAL:
default:
// ensuring that the only two roles sent to 1.0 switches with
// Nicira role support, are MASTER and SLAVE
roleToSend = OFNiciraControllerRole.ROLE_SLAVE;
log.warn("Sending Nx Role.SLAVE to switch {}.", sw);
}
int xid = xidCounter.getAndIncrement();
OFExperimenter roleRequest = OFFactories.getFactory(OFVersion.OF_10)
.buildNiciraControllerRoleRequest()
.setXid(xid)
.setRole(roleToSend)
.build();
sw.write(Collections.<OFMessage>singletonList(roleRequest));
return xid;
}
private int sendOF13RoleRequest(RoleState role) throws IOException {
// Convert the role enum to the appropriate role to send
OFControllerRole roleToSend = OFControllerRole.ROLE_NOCHANGE;
switch (role) {
case EQUAL:
roleToSend = OFControllerRole.ROLE_EQUAL;
break;
case MASTER:
roleToSend = OFControllerRole.ROLE_MASTER;
break;
case SLAVE:
roleToSend = OFControllerRole.ROLE_SLAVE;
break;
default:
log.warn("Sending default role.noChange to switch {}."
+ " Should only be used for queries.", sw);
}
int xid = xidCounter.getAndIncrement();
OFRoleRequest rrm = OFFactories.getFactory(OFVersion.OF_13)
.buildRoleRequest()
.setRole(roleToSend)
.setXid(xid)
//FIXME fix below when we actually use generation ids
.setGenerationId(U64.ZERO)
.build();
sw.write(rrm);
return xid;
}
/**
* Send a role request with the given role to the switch and update
* the pending request and timestamp.
* Sends an OFPT_ROLE_REQUEST to an OF1.3 switch, OR
* Sends an NX_ROLE_REQUEST to an OF1.0 switch if configured to support it
* in the IOFSwitch driver. If not supported, this method sends nothing
* and returns 'false'. The caller should take appropriate action.
*
* One other optimization we do here is that for OF1.0 switches with
* Nicira role message support, we force the Role.EQUAL to become
* Role.SLAVE, as there is no defined behavior for the Nicira role OTHER.
* We cannot expect it to behave like SLAVE. We don't have this problem with
* OF1.3 switches, because Role.EQUAL is well defined and we can simulate
* SLAVE behavior by using ASYNC messages.
*
* @param role
* @throws IOException
* @returns false if and only if the switch does not support role-request
* messages, according to the switch driver; true otherwise.
*/
synchronized boolean sendRoleRequest(RoleState role, RoleRecvStatus exp)
throws IOException {
this.expectation = exp;
if (sw.factory().getVersion() == OFVersion.OF_10) {
Boolean supportsNxRole = (Boolean)
sw.supportNxRole();
if (!supportsNxRole) {
log.debug("Switch driver indicates no support for Nicira "
+ "role request messages. Not sending ...");
handleUnsentRoleMessage(role,
expectation);
return false;
}
// OF1.0 switch with support for NX_ROLE_REQUEST vendor extn.
// make Role.EQUAL become Role.SLAVE
role = (role == RoleState.EQUAL) ? RoleState.SLAVE : role;
pendingXid = sendNxRoleRequest(role);
pendingRole = role;
requestPending = true;
} else {
// OF1.3 switch, use OFPT_ROLE_REQUEST message
pendingXid = sendOF13RoleRequest(role);
pendingRole = role;
requestPending = true;
}
return true;
}
private void handleUnsentRoleMessage(RoleState role,
RoleRecvStatus exp) throws IOException {
// typically this is triggered for a switch where role messages
// are not supported - we confirm that the role being set is
// master
if (exp != RoleRecvStatus.MATCHED_SET_ROLE) {
log.error("Expected MASTER role from registry for switch "
+ "which has no support for role-messages."
+ "Received {}. It is possible that this switch "
+ "is connected to other controllers, in which "
+ "case it should support role messages - not "
+ "moving forward.", role);
}
}
/**
* Deliver a received role reply.
*
* Check if a request is pending and if the received reply matches the
* the expected pending reply (we check both role and xid) we set
* the role for the switch/channel.
*
* If a request is pending but doesn't match the reply we ignore it, and
* return
*
* If no request is pending we disconnect with a SwitchStateException
*
* @param RoleReplyInfo information about role-reply in format that
* controller can understand.
* @throws SwitchStateException if no request is pending
*/
synchronized RoleRecvStatus deliverRoleReply(RoleReplyInfo rri)
throws SwitchStateException {
if (!requestPending) {
RoleState currentRole = (sw != null) ? sw.getRole() : null;
if (currentRole != null) {
if (currentRole == rri.getRole()) {
// Don't disconnect if the role reply we received is
// for the same role we are already in.
log.debug("Received unexpected RoleReply from "
+ "Switch: {}. "
+ "Role in reply is same as current role of this "
+ "controller for this sw. Ignoring ...",
sw.getStringId());
return RoleRecvStatus.OTHER_EXPECTATION;
} else {
String msg = String.format("Switch: [%s], "
+ "received unexpected RoleReply[%s]. "
+ "No roles are pending, and this controller's "
+ "current role:[%s] does not match reply. "
+ "Disconnecting switch ... ",
sw.getStringId(),
rri, currentRole);
throw new SwitchStateException(msg);
}
}
log.debug("Received unexpected RoleReply {} from "
+ "Switch: {}. "
+ "This controller has no current role for this sw. "
+ "Ignoring ...", new Object[] {rri,
sw.getStringId(), });
return RoleRecvStatus.OTHER_EXPECTATION;
}
int xid = (int) rri.getXid();
RoleState role = rri.getRole();
// XXX S should check generation id meaningfully and other cases of expectations
// U64 genId = rri.getGenId();
if (pendingXid != xid) {
log.debug("Received older role reply from " +
"switch {} ({}). Ignoring. " +
"Waiting for {}, xid={}",
new Object[] {sw.getStringId(), rri,
pendingRole, pendingXid });
return RoleRecvStatus.OLD_REPLY;
}
if (pendingRole == role) {
log.debug("Received role reply message from {} that matched "
+ "expected role-reply {} with expectations {}",
new Object[] {sw.getStringId(), role, expectation});
//setSwitchRole(role, RoleRecvStatus.RECEIVED_REPLY); dont want to set state here
if (expectation == RoleRecvStatus.MATCHED_CURRENT_ROLE ||
expectation == RoleRecvStatus.MATCHED_SET_ROLE) {
return expectation;
} else {
return RoleRecvStatus.OTHER_EXPECTATION;
}
}
// if xids match but role's don't, perhaps its a query (OF1.3)
if (expectation == RoleRecvStatus.REPLY_QUERY) {
return expectation;
}
return RoleRecvStatus.OTHER_EXPECTATION;
}
/**
* Called if we receive an error message. If the xid matches the
* pending request we handle it otherwise we ignore it.
*
* Note: since we only keep the last pending request we might get
* error messages for earlier role requests that we won't be able
* to handle
*/
synchronized RoleRecvStatus deliverError(OFErrorMsg error)
throws SwitchStateException {
if (!requestPending) {
log.debug("Received an error msg from sw {}, but no pending "
+ "requests in role-changer; not handling ...",
sw.getStringId());
return RoleRecvStatus.OTHER_EXPECTATION;
}
if (pendingXid != error.getXid()) {
if (error.getErrType() == OFErrorType.ROLE_REQUEST_FAILED) {
log.debug("Received an error msg from sw {} for a role request,"
+ " but not for pending request in role-changer; "
+ " ignoring error {} ...",
sw.getStringId(), error);
}
return RoleRecvStatus.OTHER_EXPECTATION;
}
// it is an error related to a currently pending role request message
if (error.getErrType() == OFErrorType.BAD_REQUEST) {
log.error("Received a error msg {} from sw {} for "
+ "pending role request {}. Switch driver indicates "
+ "role-messaging is supported. Possible issues in "
+ "switch driver configuration?", new Object[] {
((OFBadRequestErrorMsg) error).toString(),
sw.getStringId(), pendingRole
});
return RoleRecvStatus.UNSUPPORTED;
}
if (error.getErrType() == OFErrorType.ROLE_REQUEST_FAILED) {
OFRoleRequestFailedErrorMsg rrerr =
(OFRoleRequestFailedErrorMsg) error;
switch (rrerr.getCode()) {
case BAD_ROLE:
// switch says that current-role-req has bad role?
// for now we disconnect
// fall-thru
case STALE:
// switch says that current-role-req has stale gen-id?
// for now we disconnect
// fall-thru
case UNSUP:
// switch says that current-role-req has role that
// cannot be supported? for now we disconnect
String msgx = String.format("Switch: [%s], "
+ "received Error to for pending role request [%s]. "
+ "Error:[%s]. Disconnecting switch ... ",
sw.getStringId(),
pendingRole, rrerr);
throw new SwitchStateException(msgx);
default:
break;
}
}
// This error message was for a role request message but we dont know
// how to handle errors for nicira role request messages
return RoleRecvStatus.OTHER_EXPECTATION;
}
/**
* Extract the role from an OFVendor message.
*
* Extract the role from an OFVendor message if the message is a
* Nicira role reply. Otherwise return null.
*
* @param h The channel handler receiving the message
* @param vendorMessage The vendor message to parse.
* @return The role in the message if the message is a Nicira role
* reply, null otherwise.
* @throws SwitchStateException If the message is a Nicira role reply
* but the numeric role value is unknown.
*/
protected RoleState extractNiciraRoleReply(OFExperimenter experimenterMsg)
throws SwitchStateException {
int vendor = (int) experimenterMsg.getExperimenter();
if (vendor != 0x2320) {
return null;
}
OFNiciraControllerRoleReply nrr =
(OFNiciraControllerRoleReply) experimenterMsg;
RoleState role = null;
OFNiciraControllerRole ncr = nrr.getRole();
switch(ncr) {
case ROLE_MASTER:
role = RoleState.MASTER;
break;
case ROLE_OTHER:
role = RoleState.EQUAL;
break;
case ROLE_SLAVE:
role = RoleState.SLAVE;
break;
default: //handled below
}
if (role == null) {
String msg = String.format("Switch: [%s], "
+ "received NX_ROLE_REPLY with invalid role "
+ "value %s",
sw.getStringId(),
nrr.getRole());
throw new SwitchStateException(msg);
}
return role;
}
/**
* When we remove a pending role request we use this enum to indicate how we
* arrived at the decision. When we send a role request to the switch, we
* also use this enum to indicate what we expect back from the switch, so the
* role changer can match the reply to our expectation.
*/
public enum RoleRecvStatus {
/** The switch returned an error indicating that roles are not.
* supported*/
UNSUPPORTED,
/** The request timed out. */
NO_REPLY,
/** The reply was old, there is a newer request pending. */
OLD_REPLY,
/**
* The reply's role matched the role that this controller set in the
* request message - invoked either initially at startup or to reassert
* current role.
*/
MATCHED_CURRENT_ROLE,
/**
* The reply's role matched the role that this controller set in the
* request message - this is the result of a callback from the
* global registry, followed by a role request sent to the switch.
*/
MATCHED_SET_ROLE,
/**
* The reply's role was a response to the query made by this controller.
*/
REPLY_QUERY,
/** We received a role reply message from the switch
* but the expectation was unclear, or there was no expectation.
*/
OTHER_EXPECTATION,
}
/**
* Helper class returns role reply information in the format understood
* by the controller.
*/
protected static class RoleReplyInfo {
private RoleState role;
private U64 genId;
private long xid;
RoleReplyInfo(RoleState role, U64 genId, long xid) {
this.role = role;
this.genId = genId;
this.xid = xid;
}
public RoleState getRole() { return role; }
public U64 getGenId() { return genId; }
public long getXid() { return xid; }
@Override
public String toString() {
return "[Role:" + role + " GenId:" + genId + " Xid:" + xid + "]";
}
}
/**
* Extract the role information from an OF1.3 Role Reply Message.
* @param h
* @param rrmsg
* @return RoleReplyInfo object
* @throws SwitchStateException
*/
protected RoleReplyInfo extractOFRoleReply(OFRoleReply rrmsg)
throws SwitchStateException {
OFControllerRole cr = rrmsg.getRole();
RoleState role = null;
switch(cr) {
case ROLE_EQUAL:
role = RoleState.EQUAL;
break;
case ROLE_MASTER:
role = RoleState.MASTER;
break;
case ROLE_SLAVE:
role = RoleState.SLAVE;
break;
case ROLE_NOCHANGE: // switch should send current role
default:
String msg = String.format("Unknown controller role %s "
+ "received from switch %s", cr, sw);
throw new SwitchStateException(msg);
}
return new RoleReplyInfo(role, rrmsg.getGenerationId(), rrmsg.getXid());
}
}
///**
// * We are waiting for a role reply message in response to a role request
// * sent after hearing back from the registry service -- OR -- we are
// * just waiting to hear back from the registry service in the case that
// * the switch does not support role messages. If completed successfully,
// * the controller's role for this switch will be set here.
// * Before we move to the state corresponding to the role, we allow the
// * switch specific driver to complete its configuration. This configuration
// * typically depends on the role the controller is playing for this switch.
// * And so we set the switch role (for 'this' controller) before we start
// * the driver-sub-handshake.
// * Next State: WAIT_SWITCH_DRIVER_SUB_HANDSHAKE
// */
//WAIT_INITIAL_ROLE(false) {
// @Override
// void processOFError(OFChannelHandler h, OFErrorMsg m)
// throws SwitchStateException {
// // role changer will ignore the error if it isn't for it
// RoleRecvStatus rrstatus = h.roleChanger.deliverError(m);
// if (rrstatus == RoleRecvStatus.OTHER_EXPECTATION) {
// logError(h, m);
// }
// }
//
// @Override
// void processOFExperimenter(OFChannelHandler h, OFExperimenter m)
// throws IOException, SwitchStateException {
// Role role = extractNiciraRoleReply(h, m);
// // If role == null it means the vendor (experimenter) message
// // wasn't really a Nicira role reply. We ignore this case.
// if (role != null) {
// RoleReplyInfo rri = new RoleReplyInfo(role, null, m.getXid());
// RoleRecvStatus rrs = h.roleChanger.deliverRoleReply(rri);
// if (rrs == RoleRecvStatus.MATCHED_SET_ROLE) {
// setRoleAndStartDriverHandshake(h, rri.getRole());
// } // else do nothing - wait for the correct expected reply
// } else {
// unhandledMessageReceived(h, m);
// }
// }
//
// @Override
// void processOFRoleReply(OFChannelHandler h, OFRoleReply m)
// throws SwitchStateException, IOException {
// RoleReplyInfo rri = extractOFRoleReply(h, m);
// RoleRecvStatus rrs = h.roleChanger.deliverRoleReply(rri);
// if (rrs == RoleRecvStatus.MATCHED_SET_ROLE) {
// setRoleAndStartDriverHandshake(h, rri.getRole());
// } // else do nothing - wait for the correct expected reply
// }
//
// @Override
// void handleUnsentRoleMessage(OFChannelHandler h, Role role,
// RoleRecvStatus expectation) throws IOException {
// // typically this is triggered for a switch where role messages
// // are not supported - we confirm that the role being set is
// // master and move to the next state
// if (expectation == RoleRecvStatus.MATCHED_SET_ROLE) {
// if (role == Role.MASTER) {
// setRoleAndStartDriverHandshake(h, role);
// } else {
// log.error("Expected MASTER role from registry for switch "
// + "which has no support for role-messages."
// + "Received {}. It is possible that this switch "
// + "is connected to other controllers, in which "
// + "case it should support role messages - not "
// + "moving forward.", role);
// }
// } // else do nothing - wait to hear back from registry
//
// }
//
// private void setRoleAndStartDriverHandshake(OFChannelHandler h,
// Role role) throws IOException {
// h.setSwitchRole(role);
// h.sw.startDriverHandshake();
// if (h.sw.isDriverHandshakeComplete()) {
// Role mySwitchRole = h.sw.getRole();
// if (mySwitchRole == Role.MASTER) {
// log.info("Switch-driver sub-handshake complete. "
// + "Activating switch {} with Role: MASTER",
// h.sw.getStringId());
// handlePendingPortStatusMessages(h); //before activation
// boolean success = h.sw.addActivatedMasterSwitch();
// if (!success) {
// disconnectDuplicate(h);
// return;
// }
// h.setState(MASTER);
// } else {
// log.info("Switch-driver sub-handshake complete. "
// + "Activating switch {} with Role: EQUAL",
// h.sw.getStringId());
// handlePendingPortStatusMessages(h); //before activation
// boolean success = h.sw.addActivatedEqualSwitch();
// if (!success) {
// disconnectDuplicate(h);
// return;
// }
// h.setState(EQUAL);
// }
// } else {
// h.setState(WAIT_SWITCH_DRIVER_SUB_HANDSHAKE);
// }
// }
//
// @Override
// void processOFFeaturesReply(OFChannelHandler h, OFFeaturesReply m)
// throws IOException, SwitchStateException {
// illegalMessageReceived(h, m);
// }
//
// @Override
// void processOFStatisticsReply(OFChannelHandler h, OFStatsReply m)
// throws SwitchStateException {
// illegalMessageReceived(h, m);
// }
//
// @Override
// void processOFPortStatus(OFChannelHandler h, OFPortStatus m)
// throws IOException, SwitchStateException {
// h.pendingPortStatusMsg.add(m);
//
// }
//},
///**
// * This controller is in EQUAL role for this switch. We enter this state
// * after some /other/ controller instance wins mastership-role over this
// * switch. The EQUAL role can be considered the same as the SLAVE role
// * if this controller does NOT send commands or packets to the switch.
// * This should always be true for OF1.0 switches. XXX S need to enforce.
// *
// * For OF1.3 switches, choosing this state as EQUAL instead of SLAVE,
// * gives us the flexibility that if an app wants to send commands/packets
// * to switches, it can, even thought it is running on a controller instance
// * that is not in a MASTER role for this switch. Of course, it is the job
// * of the app to ensure that commands/packets sent by this (EQUAL) controller
// * instance does not clash/conflict with commands/packets sent by the MASTER
// * controller for this switch. Neither the controller instances, nor the
// * switch provides any kind of resolution mechanism should conflicts occur.
// */
//EQUAL(true) {
// @Override
// void processOFError(OFChannelHandler h, OFErrorMsg m)
// throws IOException, SwitchStateException {
// // role changer will ignore the error if it isn't for it
// RoleRecvStatus rrstatus = h.roleChanger.deliverError(m);
// if (rrstatus == RoleRecvStatus.OTHER_EXPECTATION) {
// logError(h, m);
// h.dispatchMessage(m);
// }
// }
//
// @Override
// void processOFStatisticsReply(OFChannelHandler h,
// OFStatsReply m) {
// h.sw.handleMessage(m);
// }
//
// @Override
// void processOFExperimenter(OFChannelHandler h, OFExperimenter m)
// throws IOException, SwitchStateException {
// Role role = extractNiciraRoleReply(h, m);
// // If role == null it means the message wasn't really a
// // Nicira role reply. We ignore it in this state.
// if (role != null) {
// RoleRecvStatus rrs = h.roleChanger.deliverRoleReply(
// new RoleReplyInfo(role, null, m.getXid()));
// if (rrs == RoleRecvStatus.MATCHED_SET_ROLE) {
// checkAndSetRoleTransition(h, role);
// }
// } else {
// unhandledMessageReceived(h, m);
// }
// }
//
// @Override
// void processOFRoleReply(OFChannelHandler h, OFRoleReply m)
// throws SwitchStateException, IOException {
// RoleReplyInfo rri = extractOFRoleReply(h, m);
// RoleRecvStatus rrs = h.roleChanger.deliverRoleReply(rri);
// if (rrs == RoleRecvStatus.MATCHED_SET_ROLE) {
// checkAndSetRoleTransition(h, rri.getRole());
// }
// }
//
// // XXX S needs more handlers for 1.3 switches in equal role
//
// @Override
// void processOFPortStatus(OFChannelHandler h, OFPortStatus m)
// throws IOException, SwitchStateException {
// handlePortStatusMessage(h, m, true);
// }
//
// @Override
// @LogMessageDoc(level = "WARN",
// message = "Received PacketIn from switch {} while "
// + "being slave. Reasserting slave role.",
// explanation = "The switch has receive a PacketIn despite being "
// + "in slave role indicating inconsistent controller roles",
// recommendation = "This situation can occurs transiently during role"
// + " changes. If, however, the condition persists or happens"
// + " frequently this indicates a role inconsistency. "
// + LogMessageDoc.CHECK_CONTROLLER)
// void processOFPacketIn(OFChannelHandler h, OFPacketIn m) throws IOException {
// // we don't expect packetIn while slave, reassert we are slave
// h.counters.packetInWhileSwitchIsSlave.updateCounterNoFlush();
// log.warn("Received PacketIn from switch {} while" +
// "being slave. Reasserting slave role.", h.sw);
// //h.controller.reassertRole(h, Role.SLAVE);
// // XXX reassert in role changer
// }
//};
package org.onlab.onos.of.controller.impl.registry;
public class ControllerRegistryEntry implements Comparable<ControllerRegistryEntry> {
//
// TODO: Refactor the implementation and decide whether controllerId
// is needed. If "yes", we might need to consider it inside the
// compareTo(), equals() and hashCode() implementations.
//
private final String controllerId;
private final int sequenceNumber;
public ControllerRegistryEntry(String controllerId, int sequenceNumber) {
this.controllerId = controllerId;
this.sequenceNumber = sequenceNumber;
}
public String getControllerId() {
return controllerId;
}
/**
* Compares this object with the specified object for order.
* NOTE: the test is based on ControllerRegistryEntry sequence numbers,
* and doesn't include the controllerId.
*
* @param o the object to be compared.
* @return a negative integer, zero, or a positive integer as this object
* is less than, equal to, or greater than the specified object.
*/
@Override
public int compareTo(ControllerRegistryEntry o) {
return this.sequenceNumber - o.sequenceNumber;
}
/**
* Test whether some other object is "equal to" this one.
* NOTE: the test is based on ControllerRegistryEntry sequence numbers,
* and doesn't include the controllerId.
*
* @param obj the reference object with which to compare.
* @return true if this object is the same as the obj argument; false
* otherwise.
*/
@Override
public boolean equals(Object obj) {
if (obj instanceof ControllerRegistryEntry) {
ControllerRegistryEntry other = (ControllerRegistryEntry) obj;
return this.sequenceNumber == other.sequenceNumber;
}
return false;
}
/**
* Get the hash code for the object.
* NOTE: the computation is based on ControllerRegistryEntry sequence
* numbers, and doesn't include the controller ID.
*
* @return a hash code value for this object.
*/
@Override
public int hashCode() {
return Integer.valueOf(this.sequenceNumber).hashCode();
}
}
package org.onlab.onos.of.controller.impl.registry;
import java.util.Collection;
import java.util.List;
import java.util.Map;
import org.onlab.onos.of.controller.impl.util.InstanceId;
/**
* A registry service that allows ONOS to register controllers and switches in a
* way that is global to the entire ONOS cluster. The registry is the arbiter
* for allowing controllers to control switches.
* <p/>
* The OVS/OF1.{2,3} fault tolerance model is a switch connects to multiple
* controllers, and the controllers send role requests to tell the switch their
* role in controlling the switch.
* <p/>
* The ONOS fault tolerance model allows only a single controller to have
* control of a switch (MASTER role) at once. Controllers therefore need a
* mechanism that enables them to decide who should control a each switch. The
* registry service provides this mechanism.
*/
public interface IControllerRegistry {
/**
* Callback interface for control change events.
*/
public interface ControlChangeCallback {
/**
* Called whenever the control changes from the point of view of the
* registry. The callee can check whether they have control or not using
* the hasControl parameter.
*
* @param dpid The switch that control has changed for
* @param hasControl Whether the listener now has control or not
*/
void controlChanged(long dpid, boolean hasControl);
}
/**
* Request for control of a switch. This method does not block. When control
* for a switch changes, the controlChanged method on the callback object
* will be called. This happens any time the control changes while the
* request is still active (until releaseControl is called)
*
* @param dpid Switch to request control for
* @param cb Callback that will be used to notify caller of control changes
* @throws RegistryException Errors contacting the registry service
*/
public void requestControl(long dpid, ControlChangeCallback cb)
throws RegistryException;
/**
* Stop trying to take control of a switch. This removes the entry for this
* controller requesting this switch in the registry. If the controller had
* control when this is called, another controller will now gain control of
* the switch. This call doesn't block.
*
* @param dpid Switch to release control of
*/
public void releaseControl(long dpid);
/**
* Check whether the controller has control of the switch This call doesn't
* block.
*
* @param dpid Switch to check control of
* @return true if controller has control of the switch.
*/
public boolean hasControl(long dpid);
/**
* Check whether this instance is the leader for the cluster. This call
* doesn't block.
*
* @return true if the instance is the leader for the cluster, otherwise
* false.
*/
public boolean isClusterLeader();
/**
* Gets the unique ID used to identify this ONOS instance in the cluster.
*
* @return Instance ID.
*/
public InstanceId getOnosInstanceId();
/**
* Register a controller to the ONOS cluster. Must be called before the
* registry can be used to take control of any switches.
*
* @param controllerId A unique string ID identifying this controller in the
* cluster
* @throws RegistryException for errors connecting to registry service,
* controllerId already registered
*/
public void registerController(String controllerId)
throws RegistryException;
/**
* Get all controllers in the cluster.
*
* @return Collection of controller IDs
* @throws RegistryException on error
*/
public Collection<String> getAllControllers() throws RegistryException;
/**
* Get all switches in the cluster, along with which controller is in
* control of them (if any) and any other controllers that have requested
* control.
*
* @return Map of all switches.
*/
public Map<String, List<ControllerRegistryEntry>> getAllSwitches();
/**
* Get the controller that has control of a given switch.
*
* @param dpid Switch to find controller for
* @return controller ID
* @throws RegistryException Errors contacting registry service
*/
public String getControllerForSwitch(long dpid) throws RegistryException;
/**
* Get all switches controlled by a given controller.
*
* @param controllerId ID of the controller
* @return Collection of dpids
*/
public Collection<Long> getSwitchesControlledByController(String controllerId);
/**
* Get a unique Id Block.
*
* @return Id Block.
*/
public IdBlock allocateUniqueIdBlock();
/**
* Get next unique id and retrieve a new range of ids if needed.
*
* @param range range to use for the identifier
* @return Id Block.
*/
public IdBlock allocateUniqueIdBlock(long range);
/**
* Get a globally unique ID.
*
* @return a globally unique ID.
*/
public long getNextUniqueId();
}
package org.onlab.onos.of.controller.impl.registry;
public class IdBlock {
private final long start;
private final long end;
private final long size;
public IdBlock(long start, long end, long size) {
this.start = start;
this.end = end;
this.size = size;
}
public long getStart() {
return start;
}
public long getEnd() {
return end;
}
public long getSize() {
return size;
}
@Override
public String toString() {
return "IdBlock [start=" + start + ", end=" + end + ", size=" + size
+ "]";
}
}
package org.onlab.onos.of.controller.impl.registry;
public class RegistryException extends Exception {
private static final long serialVersionUID = -8276300722010217913L;
public RegistryException(String message) {
super(message);
}
public RegistryException(String message, Throwable cause) {
super(message, cause);
}
}
package org.onlab.onos.of.controller.impl.util;
import java.io.IOException;
import java.util.Collection;
import java.util.Date;
import java.util.List;
import java.util.Map;
import java.util.Set;
import java.util.concurrent.Future;
import org.jboss.netty.channel.Channel;
import org.projectfloodlight.openflow.protocol.OFActionType;
import org.projectfloodlight.openflow.protocol.OFCapabilities;
import org.projectfloodlight.openflow.protocol.OFDescStatsReply;
import org.projectfloodlight.openflow.protocol.OFFeaturesReply;
import org.projectfloodlight.openflow.protocol.OFMessage;
import org.projectfloodlight.openflow.protocol.OFPortDesc;
import org.projectfloodlight.openflow.protocol.OFPortDescStatsReply;
import org.projectfloodlight.openflow.protocol.OFPortStatus;
import org.projectfloodlight.openflow.protocol.OFStatsReply;
import org.projectfloodlight.openflow.protocol.OFStatsRequest;
import org.projectfloodlight.openflow.protocol.OFVersion;
import org.projectfloodlight.openflow.types.DatapathId;
import org.projectfloodlight.openflow.types.U64;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import org.onlab.onos.of.controller.impl.IOFSwitch;
import org.onlab.onos.of.controller.impl.Role;
import org.onlab.onos.of.controller.impl.debugcounter.IDebugCounterService;
import org.onlab.onos.of.controller.impl.debugcounter.IDebugCounterService.CounterException;
public class DummySwitchForTesting implements IOFSwitch {
protected static final Logger log = LoggerFactory.getLogger(DummySwitchForTesting.class);
private Channel channel;
private boolean connected = false;
private OFVersion ofv = OFVersion.OF_10;
private Collection<OFPortDesc> ports;
private DatapathId datapathId;
private Set<OFCapabilities> capabilities;
private int buffers;
private byte tables;
private String stringId;
private Role role;
@Override
public void disconnectSwitch() {
this.channel.close();
}
@Override
public void write(OFMessage m) throws IOException {
this.channel.write(m);
}
@Override
public void write(List<OFMessage> msglist) throws IOException {
for (OFMessage m : msglist) {
this.channel.write(m);
}
}
@Override
public Date getConnectedSince() {
// TODO Auto-generated method stub
return null;
}
@Override
public int getNextTransactionId() {
return 0;
}
@Override
public boolean isConnected() {
return this.connected;
}
@Override
public void setConnected(boolean connected) {
this.connected = connected;
}
@Override
public void flush() {
// TODO Auto-generated method stub
}
@Override
public void setChannel(Channel channel) {
this.channel = channel;
}
@Override
public long getId() {
if (this.stringId == null) {
throw new RuntimeException("Features reply has not yet been set");
}
return this.datapathId.getLong();
}
@Override
public String getStringId() {
// TODO Auto-generated method stub
return "DummySwitch";
}
@Override
public int getNumBuffers() {
// TODO Auto-generated method stub
return 0;
}
@Override
public Set<OFCapabilities> getCapabilities() {
// TODO Auto-generated method stub
return null;
}
@Override
public byte getNumTables() {
// TODO Auto-generated method stub
return 0;
}
@Override
public OFDescStatsReply getSwitchDescription() {
// TODO Auto-generated method stub
return null;
}
@Override
public void cancelFeaturesReply(int transactionId) {
// TODO Auto-generated method stub
}
@Override
public Set<OFActionType> getActions() {
// TODO Auto-generated method stub
return null;
}
@Override
public void setOFVersion(OFVersion version) {
// TODO Auto-generated method stub
}
@Override
public OFVersion getOFVersion() {
return this.ofv;
}
@Override
public Collection<OFPortDesc> getEnabledPorts() {
// TODO Auto-generated method stub
return null;
}
@Override
public Collection<Integer> getEnabledPortNumbers() {
// TODO Auto-generated method stub
return null;
}
@Override
public OFPortDesc getPort(int portNumber) {
// TODO Auto-generated method stub
return null;
}
@Override
public OFPortDesc getPort(String portName) {
// TODO Auto-generated method stub
return null;
}
@Override
public OrderedCollection<PortChangeEvent> processOFPortStatus(
OFPortStatus ps) {
// TODO Auto-generated method stub
return null;
}
@Override
public Collection<OFPortDesc> getPorts() {
return ports;
}
@Override
public boolean portEnabled(int portName) {
// TODO Auto-generated method stub
return false;
}
@Override
public OrderedCollection<PortChangeEvent> setPorts(
Collection<OFPortDesc> p) {
this.ports = p;
return null;
}
@Override
public Map<Object, Object> getAttributes() {
return null;
}
@Override
public boolean hasAttribute(String name) {
// TODO Auto-generated method stub
return false;
}
@Override
public Object getAttribute(String name) {
return Boolean.FALSE;
}
@Override
public void setAttribute(String name, Object value) {
// TODO Auto-generated method stub
}
@Override
public Object removeAttribute(String name) {
// TODO Auto-generated method stub
return null;
}
@Override
public void deliverStatisticsReply(OFMessage reply) {
// TODO Auto-generated method stub
}
@Override
public void cancelStatisticsReply(int transactionId) {
// TODO Auto-generated method stub
}
@Override
public void cancelAllStatisticsReplies() {
// TODO Auto-generated method stub
}
@Override
public Future<List<OFStatsReply>> getStatistics(OFStatsRequest<?> request)
throws IOException {
// TODO Auto-generated method stub
return null;
}
@Override
public void clearAllFlowMods() {
// TODO Auto-generated method stub
}
@Override
public Role getRole() {
return this.role;
}
@Override
public void setRole(Role role) {
this.role = role;
}
@Override
public U64 getNextGenerationId() {
// TODO Auto-generated method stub
return null;
}
@Override
public void setDebugCounterService(IDebugCounterService debugCounter)
throws CounterException {
// TODO Auto-generated method stub
}
@Override
public void startDriverHandshake() throws IOException {
// TODO Auto-generated method stub
}
@Override
public boolean isDriverHandshakeComplete() {
return true;
}
@Override
public void processDriverHandshakeMessage(OFMessage m) {
}
@Override
public void setTableFull(boolean isFull) {
// TODO Auto-generated method stub
}
@Override
public void setFeaturesReply(OFFeaturesReply featuresReply) {
if (featuresReply == null) {
log.error("Error setting featuresReply for switch: {}", getStringId());
return;
}
this.datapathId = featuresReply.getDatapathId();
this.capabilities = featuresReply.getCapabilities();
this.buffers = (int) featuresReply.getNBuffers();
this.tables = (byte) featuresReply.getNTables();
this.stringId = this.datapathId.toString();
}
@Override
public void setPortDescReply(OFPortDescStatsReply portDescReply) {
// TODO Auto-generated method stub
}
@Override
public void handleMessage(OFMessage m) {
log.info("Got packet {} but I am dumb so I don't know what to do.", m);
}
@Override
public boolean portEnabled(String portName) {
// TODO Auto-generated method stub
return false;
}
@Override
public OrderedCollection<PortChangeEvent> comparePorts(
Collection<OFPortDesc> p) {
// TODO Auto-generated method stub
return null;
}
}
package org.onlab.onos.of.controller.impl.util;
import java.util.EnumSet;
import java.util.Set;
/**
* A utility class to convert between integer based bitmaps for (OpenFlow)
* flags and Enum and EnumSet based representations.
*
* The enum used to represent individual flags needs to implement the
* BitmapableEnum interface.
*
* Example:
* {@code
* int bitmap = 0x11; // OFPPC_PORT_DOWN | OFPPC_NO_STP
* EnumSet<OFPortConfig> s = toEnumSet(OFPortConfig.class, bitmap);
* // s will contain OFPPC_PORT_DOWN and OFPPC_NO_STP
* }
*
* {@code
* EnumSet<OFPortConfig> s = EnumSet.of(OFPPC_NO_STP, OFPPC_PORT_DOWN);
* int bitmap = toBitmap(s); // returns 0x11
* }
*
*/
public final class EnumBitmaps {
private EnumBitmaps() { }
/**
* Enums used to represent individual flags needs to implement this
* interface.
*/
public interface BitmapableEnum {
/** Return the value in the bitmap that the enum constant represents.
* The returned value must have only a single bit set. E.g.,1 << 3
*/
int getValue();
}
/**
* Convert an integer bitmap to an EnumSet.
*
* See class description for example
* @param type The Enum class to use. Must implement BitmapableEnum
* @param bitmap The integer bitmap
* @return A newly allocated EnumSet representing the bits set in the
* bitmap
* @throws NullPointerException if type is null
* @throws IllegalArgumentException if any enum constant from type has
* more than one bit set.
* @throws IllegalArgumentException if the bitmap has any bits set not
* represented by an enum constant.
*/
public static <E extends Enum<E> & BitmapableEnum>
EnumSet<E> toEnumSet(Class<E> type, int bitmap) {
if (type == null) {
throw new NullPointerException("Given enum type must not be null");
}
EnumSet<E> s = EnumSet.noneOf(type);
// allSetBitmap will eventually have all valid bits for the given
// type set.
int allSetBitmap = 0;
for (E element: type.getEnumConstants()) {
if (Integer.bitCount(element.getValue()) != 1) {
String msg = String.format("The %s (%x) constant of the " +
"enum %s is supposed to represent a bitmap entry but " +
"has more than one bit set.",
element.toString(), element.getValue(), type.getName());
throw new IllegalArgumentException(msg);
}
allSetBitmap |= element.getValue();
if ((bitmap & element.getValue()) != 0) {
s.add(element);
}
}
if (((~allSetBitmap) & bitmap) != 0) {
// check if only valid flags are set in the given bitmap
String msg = String.format("The bitmap %x for enum %s has " +
"bits set that are presented by any enum constant",
bitmap, type.getName());
throw new IllegalArgumentException(msg);
}
return s;
}
/**
* Return the bitmap mask with all possible bits set. E.g., If a bitmap
* has the individual flags 0x1, 0x2, and 0x8 (note the missing 0x4) then
* the mask will be 0xb (1011 binary)
*
* @param type The Enum class to use. Must implement BitmapableEnum
* @throws NullPointerException if type is null
* @throws IllegalArgumentException if any enum constant from type has
* more than one bit set
* @return an integer with all possible bits for the given bitmap enum
* type set.
*/
public static <E extends Enum<E> & BitmapableEnum>
int getMask(Class<E> type) {
if (type == null) {
throw new NullPointerException("Given enum type must not be null");
}
// allSetBitmap will eventually have all valid bits for the given
// type set.
int allSetBitmap = 0;
for (E element: type.getEnumConstants()) {
if (Integer.bitCount(element.getValue()) != 1) {
String msg = String.format("The %s (%x) constant of the " +
"enum %s is supposed to represent a bitmap entry but " +
"has more than one bit set.",
element.toString(), element.getValue(), type.getName());
throw new IllegalArgumentException(msg);
}
allSetBitmap |= element.getValue();
}
return allSetBitmap;
}
/**
* Convert the given EnumSet to the integer bitmap representation.
* @param set The EnumSet to convert. The enum must implement
* BitmapableEnum
* @return the integer bitmap
* @throws IllegalArgumentException if an enum constant from the set (!) has
* more than one bit set
* @throws NullPointerException if the set is null
*/
public static <E extends Enum<E> & BitmapableEnum>
int toBitmap(Set<E> set) {
if (set == null) {
throw new NullPointerException("Given set must not be null");
}
int bitmap = 0;
for (E element: set) {
if (Integer.bitCount(element.getValue()) != 1) {
String msg = String.format("The %s (%x) constant in the set " +
"is supposed to represent a bitmap entry but " +
"has more than one bit set.",
element.toString(), element.getValue());
throw new IllegalArgumentException(msg);
}
bitmap |= element.getValue();
}
return bitmap;
}
}
/**
* Copyright 2012, Big Switch Networks, Inc.
* Originally created by David Erickson, Stanford University
*
* Licensed under the Apache License, Version 2.0 (the "License"); you may
* not use this file except in compliance with the License. You may obtain
* a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
* WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
* License for the specific language governing permissions and limitations
* under the License.
**/
package org.onlab.onos.of.controller.impl.util;
import java.util.Iterator;
import java.util.NoSuchElementException;
/**
* An iterator that will filter values from an iterator and return only
* those values that match the predicate.
*/
public abstract class FilterIterator<T> implements Iterator<T> {
protected Iterator<T> subIterator;
protected T next;
/**
* Construct a filter iterator from the given sub iterator.
*
* @param subIterator the sub iterator over which we'll filter
*/
public FilterIterator(Iterator<T> subIterator) {
super();
this.subIterator = subIterator;
}
/**
* Check whether the given value should be returned by the
* filter.
*
* @param value the value to check
* @return true if the value should be included
*/
protected abstract boolean matches(T value);
// ***********
// Iterator<T>
// ***********
@Override
public boolean hasNext() {
if (next != null) {
return true;
}
while (subIterator.hasNext()) {
next = subIterator.next();
if (matches(next)) {
return true;
}
}
next = null;
return false;
}
@Override
public T next() {
if (hasNext()) {
T cur = next;
next = null;
return cur;
}
throw new NoSuchElementException();
}
@Override
public void remove() {
throw new UnsupportedOperationException();
}
}
package org.onlab.onos.of.controller.impl.util;
import static com.google.common.base.Preconditions.checkNotNull;
import static com.google.common.base.Preconditions.checkArgument;
/**
* The class representing an ONOS Instance ID.
*
* This class is immutable.
*/
public final class InstanceId {
private final String id;
/**
* Constructor from a string value.
*
* @param id the value to use.
*/
public InstanceId(String id) {
this.id = checkNotNull(id);
checkArgument(!id.isEmpty(), "Empty ONOS Instance ID");
}
@Override
public int hashCode() {
return id.hashCode();
}
@Override
public boolean equals(Object obj) {
if (obj == this) {
return true;
}
if (!(obj instanceof InstanceId)) {
return false;
}
InstanceId that = (InstanceId) obj;
return this.id.equals(that.id);
}
@Override
public String toString() {
return id;
}
}
/**
* Copyright 2012 Big Switch Networks, Inc.
* Originally created by David Erickson, Stanford University
*
* Licensed under the Apache License, Version 2.0 (the "License"); you may
* not use this file except in compliance with the License. You may obtain
* a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
* WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
* License for the specific language governing permissions and limitations
* under the License.
**/
package org.onlab.onos.of.controller.impl.util;
import java.util.Iterator;
import java.util.NoSuchElementException;
/**
* Iterator over all values in an iterator of iterators.
*
* @param <T> the type of elements returned by this iterator
*/
public class IterableIterator<T> implements Iterator<T> {
Iterator<? extends Iterable<T>> subIterator;
Iterator<T> current = null;
public IterableIterator(Iterator<? extends Iterable<T>> subIterator) {
super();
this.subIterator = subIterator;
}
@Override
public boolean hasNext() {
if (current == null) {
if (subIterator.hasNext()) {
current = subIterator.next().iterator();
} else {
return false;
}
}
while (!current.hasNext() && subIterator.hasNext()) {
current = subIterator.next().iterator();
}
return current.hasNext();
}
@Override
public T next() {
if (hasNext()) {
return current.next();
}
throw new NoSuchElementException();
}
@Override
public void remove() {
if (hasNext()) {
current.remove();
}
throw new NoSuchElementException();
}
}
/**
* Copyright 2011, Big Switch Networks, Inc.
* Originally created by David Erickson, Stanford University
*
* Licensed under the Apache License, Version 2.0 (the "License"); you may
* not use this file except in compliance with the License. You may obtain
* a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
* WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
* License for the specific language governing permissions and limitations
* under the License.
**/
package org.onlab.onos.of.controller.impl.util;
import java.util.LinkedHashMap;
import java.util.Map;
public class LRUHashMap<K, V> extends LinkedHashMap<K, V> {
private static final long serialVersionUID = 1L;
private final int capacity;
public LRUHashMap(int capacity) {
super(capacity + 1, 0.75f, true);
this.capacity = capacity;
}
protected boolean removeEldestEntry(Map.Entry<K, V> eldest) {
return size() > capacity;
}
}
package org.onlab.onos.of.controller.impl.util;
import java.util.Collection;
import java.util.LinkedHashSet;
import com.google.common.collect.ForwardingCollection;
/**
* A simple wrapper / forwarder that forwards all calls to a LinkedHashSet.
* This wrappers sole reason for existence is to implement the
* OrderedCollection marker interface.
*
*/
public class LinkedHashSetWrapper<E>
extends ForwardingCollection<E> implements OrderedCollection<E> {
private final Collection<E> delegate;
public LinkedHashSetWrapper() {
super();
this.delegate = new LinkedHashSet<E>();
}
public LinkedHashSetWrapper(Collection<? extends E> c) {
super();
this.delegate = new LinkedHashSet<E>(c);
}
@Override
protected Collection<E> delegate() {
return this.delegate;
}
}
/**
* Copyright 2012 Big Switch Networks, Inc.
* Originally created by David Erickson, Stanford University
*
* Licensed under the Apache License, Version 2.0 (the "License"); you may
* not use this file except in compliance with the License. You may obtain
* a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
* WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
* License for the specific language governing permissions and limitations
* under the License.
**/
package org.onlab.onos.of.controller.impl.util;
import java.util.Iterator;
import java.util.NoSuchElementException;
/**
* Iterator over all values in an iterator of iterators.
*
* @param <T> the type of elements returned by this iterator
*/
public class MultiIterator<T> implements Iterator<T> {
Iterator<Iterator<T>> subIterator;
Iterator<T> current = null;
public MultiIterator(Iterator<Iterator<T>> subIterator) {
super();
this.subIterator = subIterator;
}
@Override
public boolean hasNext() {
if (current == null) {
if (subIterator.hasNext()) {
current = subIterator.next();
} else {
return false;
}
}
while (!current.hasNext() && subIterator.hasNext()) {
current = subIterator.next();
}
return current.hasNext();
}
@Override
public T next() {
if (hasNext()) {
return current.next();
}
throw new NoSuchElementException();
}
@Override
public void remove() {
if (hasNext()) {
current.remove();
}
throw new NoSuchElementException();
}
}
package org.onlab.onos.of.controller.impl.util;
import java.util.Collection;
/**
* A marker interface indicating that this Collection defines a particular
* iteration order. The details about the iteration order are specified by
* the concrete implementation.
*
* @param <E>
*/
public interface OrderedCollection<E> extends Collection<E> {
}
/**
* Copyright 2011, Big Switch Networks, Inc.
* Originally created by David Erickson, Stanford University
*
* Licensed under the Apache License, Version 2.0 (the "License"); you may
* not use this file except in compliance with the License. You may obtain
* a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
* WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
* License for the specific language governing permissions and limitations
* under the License.
**/
package org.onlab.onos.of.controller.impl.internal;
import junit.framework.TestCase;
import org.onlab.onos.of.controller.impl.IOFSwitch;
import org.easymock.EasyMock;
import org.junit.After;
import org.junit.Before;
import org.junit.Test;
public class ControllerTest extends TestCase {
private Controller controller;
private IOFSwitch sw;
private OFChannelHandler h;
@Override
@Before
public void setUp() throws Exception {
super.setUp();
sw = EasyMock.createMock(IOFSwitch.class);
h = EasyMock.createMock(OFChannelHandler.class);
controller = new Controller();
ControllerRunThread t = new ControllerRunThread();
t.start();
/*
* Making sure the thread is properly started before making calls
* to controller class.
*/
Thread.sleep(200);
}
/**
* Starts the base mocks used in these tests.
*/
private void startMocks() {
EasyMock.replay(sw, h);
}
/**
* Reset the mocks to a known state.
* Automatically called after tests.
*/
@After
private void resetMocks() {
EasyMock.reset(sw);
}
/**
* Fetches the controller instance.
* @return the controller
*/
public Controller getController() {
return controller;
}
/**
* Run the controller's main loop so that updates are processed.
*/
protected class ControllerRunThread extends Thread {
@Override
public void run() {
controller.openFlowPort = 0; // Don't listen
controller.activate();
}
}
/**
* Verify that we are able to add a switch that just connected.
* If it already exists then this should fail
*
* @throws Exception error
*/
@Test
public void testAddConnectedSwitches() throws Exception {
startMocks();
assertTrue(controller.addConnectedSwitch(0, h));
assertFalse(controller.addConnectedSwitch(0, h));
}
/**
* Add active master but cannot re-add active master.
* @throws Exception an error occurred.
*/
@Test
public void testAddActivatedMasterSwitch() throws Exception {
startMocks();
controller.addConnectedSwitch(0, h);
assertTrue(controller.addActivatedMasterSwitch(0, sw));
assertFalse(controller.addActivatedMasterSwitch(0, sw));
}
/**
* Tests that an activated switch can be added but cannot be re-added.
*
* @throws Exception an error occurred
*/
@Test
public void testAddActivatedEqualSwitch() throws Exception {
startMocks();
controller.addConnectedSwitch(0, h);
assertTrue(controller.addActivatedEqualSwitch(0, sw));
assertFalse(controller.addActivatedEqualSwitch(0, sw));
}
/**
* Move an equal switch to master.
* @throws Exception an error occurred
*/
@Test
public void testTranstitionToMaster() throws Exception {
startMocks();
controller.addConnectedSwitch(0, h);
controller.addActivatedEqualSwitch(0, sw);
controller.transitionToMasterSwitch(0);
assertNotNull(controller.getMasterSwitch(0));
}
/**
* Transition a master switch to equal state.
* @throws Exception an error occurred
*/
@Test
public void testTranstitionToEqual() throws Exception {
startMocks();
controller.addConnectedSwitch(0, h);
controller.addActivatedMasterSwitch(0, sw);
controller.transitionToEqualSwitch(0);
assertNotNull(controller.getEqualSwitch(0));
}
/**
* Remove the switch from the controller instance.
* @throws Exception an error occurred
*/
@Test
public void testRemoveSwitch() throws Exception {
sw.cancelAllStatisticsReplies();
EasyMock.expectLastCall().once();
sw.setConnected(false);
EasyMock.expectLastCall().once();
startMocks();
controller.addConnectedSwitch(0, h);
controller.addActivatedMasterSwitch(0, sw);
controller.removeConnectedSwitch(0);
assertNull(controller.getSwitch(0));
EasyMock.verify(sw, h);
}
}
package org.onlab.onos.of.controller.impl.internal;
import static org.easymock.EasyMock.capture;
import static org.easymock.EasyMock.createMock;
import static org.easymock.EasyMock.expect;
import static org.easymock.EasyMock.expectLastCall;
import static org.easymock.EasyMock.replay;
import static org.easymock.EasyMock.reset;
import static org.easymock.EasyMock.verify;
import static org.junit.Assert.assertEquals;
import static org.junit.Assert.assertFalse;
import static org.junit.Assert.assertTrue;
import java.io.IOException;
import java.util.ArrayList;
import java.util.Collections;
import java.util.HashSet;
import java.util.List;
import java.util.Set;
import org.onlab.onos.of.controller.impl.IOFSwitch;
import org.onlab.onos.of.controller.impl.Role;
import org.onlab.onos.of.controller.impl.debugcounter.DebugCounter;
import org.onlab.onos.of.controller.impl.debugcounter.IDebugCounterService;
import org.onlab.onos.of.controller.impl.internal.OFChannelHandler.RoleRecvStatus;
import org.easymock.Capture;
import org.easymock.CaptureType;
import org.jboss.netty.channel.Channel;
import org.jboss.netty.channel.ChannelHandlerContext;
import org.jboss.netty.channel.ChannelPipeline;
import org.jboss.netty.channel.ChannelStateEvent;
import org.jboss.netty.channel.ExceptionEvent;
import org.jboss.netty.channel.MessageEvent;
import org.junit.After;
import org.junit.Before;
import org.junit.Test;
import org.projectfloodlight.openflow.protocol.OFDescStatsReply;
import org.projectfloodlight.openflow.protocol.OFExperimenter;
import org.projectfloodlight.openflow.protocol.OFFactories;
import org.projectfloodlight.openflow.protocol.OFFactory;
import org.projectfloodlight.openflow.protocol.OFFeaturesReply;
import org.projectfloodlight.openflow.protocol.OFGetConfigReply;
import org.projectfloodlight.openflow.protocol.OFHelloElem;
import org.projectfloodlight.openflow.protocol.OFMessage;
import org.projectfloodlight.openflow.protocol.OFNiciraControllerRole;
import org.projectfloodlight.openflow.protocol.OFPacketIn;
import org.projectfloodlight.openflow.protocol.OFPacketInReason;
import org.projectfloodlight.openflow.protocol.OFPortDescStatsReply;
import org.projectfloodlight.openflow.protocol.OFSetConfig;
import org.projectfloodlight.openflow.protocol.OFStatsReply;
import org.projectfloodlight.openflow.protocol.OFStatsRequest;
import org.projectfloodlight.openflow.protocol.OFStatsType;
import org.projectfloodlight.openflow.protocol.OFType;
import org.projectfloodlight.openflow.protocol.OFVersion;
import org.projectfloodlight.openflow.types.DatapathId;
import org.projectfloodlight.openflow.types.U32;
/**
* Channel handler deals with the switch connection and dispatches
* switch messages to the appropriate locations. These Unit Testing cases
* test the channeler state machine and role changer. In the first release,
* we will focus on OF version 1.0. we will add the testing case for
* version 1.3 later.
*/
public class OFChannelHandlerTest {
private Controller controller;
private IDebugCounterService debugCounterService;
private OFChannelHandler handler;
private Channel channel;
private ChannelHandlerContext ctx;
private MessageEvent messageEvent;
private ChannelStateEvent channelStateEvent;
private ChannelPipeline pipeline;
private Capture<ExceptionEvent> exceptionEventCapture;
private Capture<List<OFMessage>> writeCapture;
private OFFeaturesReply featuresReply;
private Set<Integer> seenXids = null;
private IOFSwitch swImplBase;
private OFVersion ofVersion = OFVersion.OF_10;
private OFFactory factory13;
private OFFactory factory10;
private OFFactory factory;
@Before
public void setUp() throws Exception {
controller = createMock(Controller.class);
ctx = createMock(ChannelHandlerContext.class);
channelStateEvent = createMock(ChannelStateEvent.class);
channel = createMock(Channel.class);
messageEvent = createMock(MessageEvent.class);
exceptionEventCapture = new Capture<ExceptionEvent>(CaptureType.ALL);
pipeline = createMock(ChannelPipeline.class);
writeCapture = new Capture<List<OFMessage>>(CaptureType.ALL);
swImplBase = createMock(IOFSwitch.class);
seenXids = null;
factory13 = OFFactories.getFactory(OFVersion.OF_13);
factory10 = OFFactories.getFactory(OFVersion.OF_10);
factory = (ofVersion == OFVersion.OF_13) ? factory13 : factory10;
// TODO: should mock IDebugCounterService and make sure
// the expected counters are updated.
debugCounterService = new DebugCounter();
Controller.Counters counters =
new Controller.Counters();
counters.createCounters(debugCounterService);
expect(controller.getCounters()).andReturn(counters).anyTimes();
expect(controller.getOFMessageFactory10()).andReturn(factory10)
.anyTimes();
expect(controller.getOFMessageFactory13()).andReturn(factory13)
.anyTimes();
expect(controller.addConnectedSwitch(2000, handler)).andReturn(true)
.anyTimes();
replay(controller);
handler = new OFChannelHandler(controller);
verify(controller);
reset(controller);
resetChannel();
// replay controller. Reset it if you need more specific behavior
replay(controller);
// replay switch. Reset it if you need more specific behavior
replay(swImplBase);
// Mock ctx and channelStateEvent
expect(ctx.getChannel()).andReturn(channel).anyTimes();
expect(channelStateEvent.getChannel()).andReturn(channel).anyTimes();
replay(ctx, channelStateEvent);
/* Setup an exception event capture on the channel. Right now
* we only expect exception events to be send up the channel.
* However, it's easy to extend to other events if we need it
*/
pipeline.sendUpstream(capture(exceptionEventCapture));
expectLastCall().anyTimes();
replay(pipeline);
featuresReply = (OFFeaturesReply) buildOFMessage(OFType.FEATURES_REPLY);
}
@After
public void tearDown() {
/* ensure no exception was thrown */
if (exceptionEventCapture.hasCaptured()) {
Throwable ex = exceptionEventCapture.getValue().getCause();
throw new AssertionError("Unexpected exception: " +
ex.getClass().getName() + "(" + ex + ")");
}
assertFalse("Unexpected messages have been captured",
writeCapture.hasCaptured());
// verify all mocks.
verify(channel);
verify(messageEvent);
verify(controller);
verify(ctx);
verify(channelStateEvent);
verify(pipeline);
verify(swImplBase);
}
/**
* Reset the channel mock and set basic method call expectations.
*
**/
void resetChannel() {
reset(channel);
expect(channel.getPipeline()).andReturn(pipeline).anyTimes();
expect(channel.getRemoteAddress()).andReturn(null).anyTimes();
}
/**
* reset, setup, and replay the messageEvent mock for the given
* messages.
*/
void setupMessageEvent(List<OFMessage> messages) {
reset(messageEvent);
expect(messageEvent.getMessage()).andReturn(messages).atLeastOnce();
replay(messageEvent);
}
/**
* reset, setup, and replay the messageEvent mock for the given
* messages, mock controller send message to channel handler.
*
* This method will reset, start replay on controller, and then verify
*/
void sendMessageToHandlerWithControllerReset(List<OFMessage> messages)
throws Exception {
verify(controller);
reset(controller);
sendMessageToHandlerNoControllerReset(messages);
}
/**
* reset, setup, and replay the messageEvent mock for the given
* messages, mock controller send message to channel handler.
*
* This method will start replay on controller, and then verify
*/
void sendMessageToHandlerNoControllerReset(List<OFMessage> messages)
throws Exception {
setupMessageEvent(messages);
expect(controller.addConnectedSwitch(1000, handler))
.andReturn(true).anyTimes();
replay(controller);
handler.messageReceived(ctx, messageEvent);
verify(controller);
}
/**
* Extract the list of OFMessages that was captured by the Channel.write()
* capture. Will check that something was actually captured first. We'll
* collapse the messages from multiple writes into a single list of
* OFMessages.
* Resets the channelWriteCapture.
*/
List<OFMessage> getMessagesFromCapture() {
List<OFMessage> msgs = new ArrayList<OFMessage>();
assertTrue("No write on channel was captured",
writeCapture.hasCaptured());
List<List<OFMessage>> capturedVals = writeCapture.getValues();
for (List<OFMessage> oneWriteList: capturedVals) {
msgs.addAll(oneWriteList);
}
writeCapture.reset();
return msgs;
}
/**
* Verify that the given exception event capture (as returned by
* getAndInitExceptionCapture) has thrown an exception of the given
* expectedExceptionClass.
* Resets the capture
*/
void verifyExceptionCaptured(
Class<? extends Throwable> expectedExceptionClass) {
assertTrue("Excpected exception not thrown",
exceptionEventCapture.hasCaptured());
Throwable caughtEx = exceptionEventCapture.getValue().getCause();
assertEquals(expectedExceptionClass, caughtEx.getClass());
exceptionEventCapture.reset();
}
/**
* Make sure that the transaction ids in the given messages are
* not 0 and differ between each other.
* While it's not a defect per se if the xids are we want to ensure
* we use different ones for each message we send.
*/
void verifyUniqueXids(List<OFMessage> msgs) {
if (seenXids == null) {
seenXids = new HashSet<Integer>();
}
for (OFMessage m: msgs) {
int xid = (int) m.getXid();
assertTrue("Xid in messags is 0", xid != 0);
assertFalse("Xid " + xid + " has already been used",
seenXids.contains(xid));
seenXids.add(xid);
}
}
public void testInitState() throws Exception {
OFMessage m = buildOFMessage(OFType.HELLO);
expect(messageEvent.getMessage()).andReturn(null);
replay(channel, messageEvent);
// We don't expect to receive /any/ messages in init state since
// channelConnected moves us to a different state
sendMessageToHandlerWithControllerReset(Collections.singletonList(m));
verifyExceptionCaptured(SwitchStateException.class);
assertEquals(OFChannelHandler.ChannelState.INIT,
handler.getStateForTesting());
}
/**
* move the channel from scratch to WAIT_HELLO state.
*
*/
@Test
public void moveToWaitHello() throws Exception {
resetChannel();
channel.write(capture(writeCapture));
expectLastCall().andReturn(null).once();
replay(channel);
// replay unused mocks
replay(messageEvent);
handler.channelConnected(ctx, channelStateEvent);
List<OFMessage> msgs = getMessagesFromCapture();
assertEquals(1, msgs.size());
assertEquals(OFType.HELLO, msgs.get(0).getType());
assertEquals(OFChannelHandler.ChannelState.WAIT_HELLO,
handler.getStateForTesting());
//Should verify that the Hello received from the controller
//is ALWAYS OF1.3 hello regardless of the switch version
assertEquals(OFVersion.OF_13, msgs.get(0).getVersion());
verifyUniqueXids(msgs);
}
/**
* Move the channel from scratch to WAIT_FEATURES_REPLY state.
* Builds on moveToWaitHello().
* adds testing for WAIT_HELLO state.
*/
@Test
public void moveToWaitFeaturesReply() throws Exception {
moveToWaitHello();
resetChannel();
channel.write(capture(writeCapture));
expectLastCall().andReturn(null).atLeastOnce();
replay(channel);
OFMessage hello = buildOFMessage(OFType.HELLO);
sendMessageToHandlerWithControllerReset(Collections.singletonList(hello));
List<OFMessage> msgs = getMessagesFromCapture();
assertEquals(1, msgs.size());
assertEquals(OFType.FEATURES_REQUEST, msgs.get(0).getType());
if (ofVersion == OFVersion.OF_10) {
assertEquals(OFVersion.OF_10, msgs.get(0).getVersion());
}
verifyUniqueXids(msgs);
assertEquals(OFChannelHandler.ChannelState.WAIT_FEATURES_REPLY,
handler.getStateForTesting());
}
/**
* Move the channel from scratch to WAIT_CONFIG_REPLY state.
* Builds on moveToWaitFeaturesReply.
* adds testing for WAIT_FEATURES_REPLY state.
*/
@Test
public void moveToWaitConfigReply() throws Exception {
moveToWaitFeaturesReply();
resetChannel();
channel.write(capture(writeCapture));
expectLastCall().andReturn(null).atLeastOnce();
replay(channel);
sendMessageToHandlerWithControllerReset(Collections.<OFMessage>singletonList(featuresReply));
List<OFMessage> msgs = getMessagesFromCapture();
assertEquals(3, msgs.size());
assertEquals(OFType.SET_CONFIG, msgs.get(0).getType());
OFSetConfig sc = (OFSetConfig) msgs.get(0);
assertEquals((short) 0xffff, sc.getMissSendLen());
assertEquals(OFType.BARRIER_REQUEST, msgs.get(1).getType());
assertEquals(OFType.GET_CONFIG_REQUEST, msgs.get(2).getType());
verifyUniqueXids(msgs);
assertEquals(OFChannelHandler.ChannelState.WAIT_CONFIG_REPLY,
handler.getStateForTesting());
}
/**
* Move the channel from scratch to WAIT_DESCRIPTION_STAT_REPLY state.
* Builds on moveToWaitConfigReply().
* adds testing for WAIT_CONFIG_REPLY state.
*/
@Test
public void moveToWaitDescriptionStatReply() throws Exception {
moveToWaitConfigReply();
resetChannel();
channel.write(capture(writeCapture));
expectLastCall().andReturn(null).atLeastOnce();
replay(channel);
OFGetConfigReply cr = (OFGetConfigReply) buildOFMessage(OFType.GET_CONFIG_REPLY);
sendMessageToHandlerWithControllerReset(Collections.<OFMessage>singletonList(cr));
List<OFMessage> msgs = getMessagesFromCapture();
assertEquals(1, msgs.size());
assertEquals(OFType.STATS_REQUEST, msgs.get(0).getType());
OFStatsRequest<?> sr = (OFStatsRequest<?>) msgs.get(0);
assertEquals(OFStatsType.DESC, sr.getStatsType());
verifyUniqueXids(msgs);
assertEquals(OFChannelHandler.ChannelState.WAIT_DESCRIPTION_STAT_REPLY,
handler.getStateForTesting());
}
private OFStatsReply createDescriptionStatsReply() throws IOException {
OFStatsReply sr = (OFStatsReply) buildOFMessage(OFType.STATS_REPLY);
return sr;
}
/**
* Move the channel from scratch to WAIT_INITIAL_ROLE state.
* for a switch that does not have a sub-handshake.
* Builds on moveToWaitDescriptionStatReply().
* adds testing for WAIT_DESCRIPTION_STAT_REPLY state.
*
*/
@Test
public void moveToWaitInitialRole()
throws Exception {
moveToWaitDescriptionStatReply();
long xid = 2000;
// build the stats reply
OFStatsReply sr = createDescriptionStatsReply();
resetChannel();
replay(channel);
setupMessageEvent(Collections.<OFMessage>singletonList(sr));
// mock controller
reset(controller);
reset(swImplBase);
expect(controller.getOFSwitchInstance((OFDescStatsReply) sr, ofVersion))
.andReturn(swImplBase).anyTimes();
expect(controller.getDebugCounter())
.andReturn(debugCounterService).anyTimes();
controller.submitRegistryRequest(1000);
expectLastCall().once();
replay(controller);
//TODO: With the description stats message you are sending in the test,
//you will end up with an OFSwitchImplBase object
//which by default does NOT support the nicira role messages.
//If you wish to test the case where Nicira role messages are supported,
//then make a comment here that states that this is different
//from the default behavior of switchImplbase /or/
//send the right desc-stats (for example send what is expected from OVS 1.0)
if (ofVersion == OFVersion.OF_10) {
expect(swImplBase.getAttribute(IOFSwitch.SWITCH_SUPPORTS_NX_ROLE))
.andReturn(true).once();
swImplBase.write(capture(writeCapture));
expectLastCall().anyTimes();
}
swImplBase.setOFVersion(ofVersion);
expectLastCall().once();
swImplBase.setConnected(true);
expectLastCall().once();
swImplBase.setChannel(channel);
expectLastCall().once();
swImplBase.setDebugCounterService(controller.getDebugCounter());
expectLastCall().once();
expect(swImplBase.getStringId())
.andReturn(null).anyTimes();
swImplBase.setRole(Role.EQUAL);
expectLastCall().once();
expect(swImplBase.getNextTransactionId())
.andReturn((int) xid).anyTimes();
expect(swImplBase.getId())
.andReturn(1000L).once();
swImplBase.setFeaturesReply(featuresReply);
expectLastCall().once();
swImplBase.setPortDescReply((OFPortDescStatsReply) null);
replay(swImplBase);
// send the description stats reply
handler.messageReceived(ctx, messageEvent);
List<OFMessage> msgs = getMessagesFromCapture();
assertEquals(1, msgs.size());
assertEquals(OFType.EXPERIMENTER, msgs.get(0).getType());
verifyNiciraMessage((OFExperimenter) msgs.get(0));
verify(controller);
assertEquals(OFChannelHandler.ChannelState.WAIT_INITIAL_ROLE,
handler.getStateForTesting());
}
/**
* Move the channel from scratch to.
* WAIT_SWITCH_DRIVER_SUB_HANDSHAKE state.
* Builds on moveToWaitInitialRole().
*/
@Test
public void moveToWaitSubHandshake()
throws Exception {
moveToWaitInitialRole();
int xid = 2000;
resetChannel();
replay(channel);
reset(swImplBase);
// Set the role
setupSwitchSendRoleRequestAndVerify(true, xid, Role.SLAVE);
assertEquals(OFChannelHandler.ChannelState.WAIT_INITIAL_ROLE,
handler.getStateForTesting());
// build the stats reply
OFStatsReply sr = createDescriptionStatsReply();
OFMessage rr = getRoleReply(xid, Role.SLAVE);
setupMessageEvent(Collections.<OFMessage>singletonList(rr));
// mock controller
reset(controller);
reset(swImplBase);
expect(controller.getOFSwitchInstance((OFDescStatsReply) sr, ofVersion))
.andReturn(swImplBase).anyTimes();
expect(controller.getDebugCounter())
.andReturn(debugCounterService).anyTimes();
replay(controller);
expect(swImplBase.getStringId())
.andReturn(null).anyTimes();
swImplBase.setRole(Role.SLAVE);
expectLastCall().once();
expect(swImplBase.getNextTransactionId())
.andReturn(xid).anyTimes();
swImplBase.startDriverHandshake();
expectLastCall().once();
//when this flag is false, state machine will move to
//WAIT_SWITCH_DRIVER_SUB_HANDSHAKE state
expect(swImplBase.isDriverHandshakeComplete())
.andReturn(false).once();
replay(swImplBase);
// send the description stats reply
handler.messageReceived(ctx, messageEvent);
assertEquals(OFChannelHandler.ChannelState.WAIT_SWITCH_DRIVER_SUB_HANDSHAKE,
handler.getStateForTesting());
}
/**
* Move the channel from scratch to WAIT_INITIAL_ROLE state,
* then move the channel to EQUAL state based on the switch Role.
* This test basically test the switch with role support.
* Builds on moveToWaitInitialRole().
*
* In WAIT_INITIAL_ROLE state, when any messages (except ECHO_REQUEST
* and PORT_STATUS), state machine will transit to MASTER or
* EQUAL state based on the switch role.
*/
@Test
public void moveToSlaveWithHandshakeComplete()
throws Exception {
moveToWaitInitialRole();
int xid = 2000;
resetChannel();
replay(channel);
reset(swImplBase);
// Set the role
setupSwitchSendRoleRequestAndVerify(true, xid, Role.SLAVE);
assertEquals(OFChannelHandler.ChannelState.WAIT_INITIAL_ROLE,
handler.getStateForTesting());
// build the stats reply
OFStatsReply sr = createDescriptionStatsReply();
OFMessage rr = getRoleReply(xid, Role.SLAVE);
setupMessageEvent(Collections.<OFMessage>singletonList(rr));
// mock controller
reset(controller);
reset(swImplBase);
expect(controller.getOFSwitchInstance((OFDescStatsReply) sr, ofVersion))
.andReturn(swImplBase).anyTimes();
expect(controller.getDebugCounter())
.andReturn(debugCounterService).anyTimes();
expect(controller.addActivatedEqualSwitch(1000, swImplBase))
.andReturn(true).once();
replay(controller);
expect(swImplBase.getStringId())
.andReturn(null).anyTimes();
//consult the role in sw to determine the next state.
//in this testing case, we are testing that channel handler
// will move to EQUAL state when switch role is in SLAVE.
expect(swImplBase.getRole()).andReturn(Role.SLAVE).once();
swImplBase.setRole(Role.SLAVE);
expectLastCall().once();
expect(swImplBase.getNextTransactionId())
.andReturn(xid).anyTimes();
expect(swImplBase.getId())
.andReturn(1000L).once();
swImplBase.startDriverHandshake();
expectLastCall().once();
//when this flag is true, don't need to move interim state
//WAIT_SWITCH_DRIVER_SUB_HANDSHAKE. channel handler will
//move to corresponding state after consulting the role in sw
//This is essentially the same test as the one above,
//except for this line
expect(swImplBase.isDriverHandshakeComplete())
.andReturn(true).once();
replay(swImplBase);
// send the description stats reply
handler.messageReceived(ctx, messageEvent);
assertEquals(OFChannelHandler.ChannelState.EQUAL,
handler.getStateForTesting());
}
/**
* Move the channel from scratch to WAIT_INITIAL_ROLE state,
* then to MASTERL state based on the switch Role.
* This test basically test the switch with role support.
* Builds on moveToWaitInitialRole().
*
* In WAIT_INITIAL_ROLE state, when any messages (except ECHO_REQUEST
* and PORT_STATUS), state machine will transit to MASTER or
* EQUAL state based on the switch role.
*/
@Test
public void moveToMasterWithHandshakeComplete()
throws Exception {
moveToWaitInitialRole();
int xid = 2000;
resetChannel();
replay(channel);
reset(swImplBase);
// Set the role
setupSwitchSendRoleRequestAndVerify(true, xid, Role.MASTER);
assertEquals(OFChannelHandler.ChannelState.WAIT_INITIAL_ROLE,
handler.getStateForTesting());
// build the stats reply
OFStatsReply sr = createDescriptionStatsReply();
OFMessage rr = getRoleReply(xid, Role.MASTER);
setupMessageEvent(Collections.<OFMessage>singletonList(rr));
// mock controller
reset(controller);
reset(swImplBase);
expect(controller.getOFSwitchInstance((OFDescStatsReply) sr, ofVersion))
.andReturn(swImplBase).anyTimes();
expect(controller.getDebugCounter())
.andReturn(debugCounterService).anyTimes();
expect(controller.addActivatedMasterSwitch(1000, swImplBase))
.andReturn(true).once();
replay(controller);
expect(swImplBase.getStringId())
.andReturn(null).anyTimes();
expect(swImplBase.getRole()).andReturn(Role.MASTER).once();
swImplBase.setRole(Role.MASTER);
expectLastCall().once();
expect(swImplBase.getNextTransactionId())
.andReturn(xid).anyTimes();
expect(swImplBase.getId())
.andReturn(1000L).once();
swImplBase.startDriverHandshake();
expectLastCall().once();
expect(swImplBase.isDriverHandshakeComplete())
.andReturn(true).once();
replay(swImplBase);
// send the description stats reply
handler.messageReceived(ctx, messageEvent);
assertEquals(OFChannelHandler.ChannelState.MASTER,
handler.getStateForTesting());
}
/**
* Move the channel from scratch to
* WAIT_SWITCH_DRIVER_SUB_HANDSHAKE state.
* Builds on moveToWaitSubHandshake().
*/
@Test
public void moveToEqualViaWaitSubHandshake()
throws Exception {
moveToWaitSubHandshake();
long xid = 2000;
resetChannel();
replay(channel);
// build the stats reply
OFStatsReply sr = createDescriptionStatsReply();
setupMessageEvent(Collections.<OFMessage>singletonList(sr));
// mock controller
reset(controller);
reset(swImplBase);
expect(controller.getOFSwitchInstance((OFDescStatsReply) sr, ofVersion))
.andReturn(swImplBase).anyTimes();
expect(controller.getDebugCounter())
.andReturn(debugCounterService).anyTimes();
expect(controller.addActivatedEqualSwitch(1000, swImplBase))
.andReturn(true).once();
replay(controller);
expect(swImplBase.getStringId())
.andReturn(null).anyTimes();
expect(swImplBase.getRole()).andReturn(Role.SLAVE).once();
expect(swImplBase.getNextTransactionId())
.andReturn((int) xid).anyTimes();
expect(swImplBase.getId())
.andReturn(1000L).once();
swImplBase.processDriverHandshakeMessage(sr);
expectLastCall().once();
expect(swImplBase.isDriverHandshakeComplete())
.andReturn(true).once();
replay(swImplBase);
// send the description stats reply
handler.messageReceived(ctx, messageEvent);
assertEquals(OFChannelHandler.ChannelState.EQUAL,
handler.getStateForTesting());
}
/**
* Move the channel from scratch to
* WAIT_SWITCH_DRIVER_SUB_HANDSHAKE state.
* Builds on moveToWaitSubHandshake().
*/
@Test
public void moveToMasterViaWaitSubHandshake()
throws Exception {
moveToWaitSubHandshake();
long xid = 2000;
resetChannel();
replay(channel);
// In this state, any messages except echo request, port status and
// error go to the switch sub driver handshake. Once the switch reports
// that its sub driver handshake is complete (#isDriverHandshakeComplete
// return true) then the channel handle consults the switch role and
// moves the state machine to the appropriate state (MASTER or EQUALS).
// In this test we expect the state machine to end up in MASTER state.
OFStatsReply sr = createDescriptionStatsReply();
setupMessageEvent(Collections.<OFMessage>singletonList(sr));
// mock controller
reset(controller);
reset(swImplBase);
expect(controller.getOFSwitchInstance((OFDescStatsReply) sr, ofVersion))
.andReturn(swImplBase).anyTimes();
expect(controller.getDebugCounter())
.andReturn(debugCounterService).anyTimes();
expect(controller.addActivatedMasterSwitch(1000, swImplBase))
.andReturn(true).once();
replay(controller);
expect(swImplBase.getStringId())
.andReturn(null).anyTimes();
expect(swImplBase.getRole()).andReturn(Role.MASTER).once();
expect(swImplBase.getNextTransactionId())
.andReturn((int) xid).anyTimes();
expect(swImplBase.getId())
.andReturn(1000L).once();
swImplBase.processDriverHandshakeMessage(sr);
expectLastCall().once();
expect(swImplBase.isDriverHandshakeComplete())
.andReturn(true).once();
replay(swImplBase);
// send the description stats reply
handler.messageReceived(ctx, messageEvent);
verify(controller);
assertEquals(OFChannelHandler.ChannelState.MASTER,
handler.getStateForTesting());
}
/**
* Test the behavior in WAIT_SWITCH_DRIVER_SUB_HANDSHAKE state.
* ECHO_REQUEST message received case.
*/
@Test
public void testWaitSwitchDriverSubhandshake() throws Exception {
moveToWaitSubHandshake();
long xid = 2000;
resetChannel();
channel.write(capture(writeCapture));
expectLastCall().andReturn(null).atLeastOnce();
replay(channel);
OFMessage er = buildOFMessage(OFType.ECHO_REQUEST);
setupMessageEvent(Collections.<OFMessage>singletonList(er));
// mock controller
reset(controller);
reset(swImplBase);
expect(controller.getOFMessageFactory10()).andReturn(factory10);
expect(controller.getDebugCounter())
.andReturn(debugCounterService).anyTimes();
replay(controller);
expect(swImplBase.getStringId())
.andReturn(null).anyTimes();
expect(swImplBase.getNextTransactionId())
.andReturn((int) xid).anyTimes();
replay(swImplBase);
handler.messageReceived(ctx, messageEvent);
List<OFMessage> msgs = getMessagesFromCapture();
assertEquals(1, msgs.size());
assertEquals(OFType.ECHO_REPLY, msgs.get(0).getType());
verifyUniqueXids(msgs);
assertEquals(OFChannelHandler.ChannelState.WAIT_SWITCH_DRIVER_SUB_HANDSHAKE,
handler.getStateForTesting());
}
/**
* Helper.
* Verify that the given OFMessage is a correct Nicira RoleRequest message.
*/
private void verifyNiciraMessage(OFExperimenter ofMessage) {
int vendor = (int) ofMessage.getExperimenter();
assertEquals(vendor, 0x2320); // magic number representing nicira
}
/**
* Setup the mock switch and write capture for a role request, set the
* role and verify mocks.
* @param supportsNxRole whether the switch supports role request messages
* to setup the attribute. This must be null (don't yet know if roles
* supported: send to check) or true.
* @param xid The xid to use in the role request
* @param role The role to send
* @throws IOException
*/
private void setupSwitchSendRoleRequestAndVerify(Boolean supportsNxRole,
int xid,
Role role) throws IOException {
RoleRecvStatus expectation = RoleRecvStatus.MATCHED_SET_ROLE;
expect(swImplBase.getAttribute(IOFSwitch.SWITCH_SUPPORTS_NX_ROLE))
.andReturn(supportsNxRole).atLeastOnce();
if (supportsNxRole != null && supportsNxRole) {
expect(swImplBase.getNextTransactionId()).andReturn(xid).once();
swImplBase.write(capture(writeCapture));
expectLastCall().anyTimes();
}
replay(swImplBase);
handler.sendRoleRequest(role, expectation);
if (supportsNxRole != null && supportsNxRole) {
List<OFMessage> msgs = getMessagesFromCapture();
assertEquals(1, msgs.size());
verifyNiciraMessage((OFExperimenter) msgs.get(0));
}
}
/**
* Setup the mock switch for a role change request where the switch
* does not support roles.
*
* Needs to verify and reset the controller since we need to set
* an expectation
*/
private void setupSwitchRoleChangeUnsupported(int xid,
Role role) {
boolean supportsNxRole = false;
RoleRecvStatus expectation = RoleRecvStatus.NO_REPLY;
reset(swImplBase);
expect(swImplBase.getAttribute(IOFSwitch.SWITCH_SUPPORTS_NX_ROLE))
.andReturn(supportsNxRole).atLeastOnce();
// TODO: hmmm. While it's not incorrect that we set the attribute
// again it looks odd. Maybe change
swImplBase.setAttribute(IOFSwitch.SWITCH_SUPPORTS_NX_ROLE, supportsNxRole);
expectLastCall().anyTimes();
replay(swImplBase);
handler.sendRoleRequest(role, expectation);
verify(swImplBase);
}
/*
* Return a Nicira RoleReply message for the given role.
*/
private OFMessage getRoleReply(long xid, Role role) {
OFNiciraControllerRole nr = null;
switch(role) {
case MASTER:
nr = OFNiciraControllerRole.ROLE_MASTER;
break;
case EQUAL:
nr = OFNiciraControllerRole.ROLE_SLAVE;
break;
case SLAVE:
nr = OFNiciraControllerRole.ROLE_SLAVE;
break;
default: //handled below
}
OFMessage m = factory10.buildNiciraControllerRoleReply()
.setRole(nr)
.setXid(xid)
.build();
return m;
}
/**
* Move the channel from scratch to MASTER state.
* Builds on moveToWaitInitialRole().
* adds testing for WAIT_INITAL_ROLE state.
*
* This method tests the case that the switch does NOT support roles.
* In ONOS if the switch-driver says that nicira-role messages are not
* supported, then ONOS does NOT send role-request messages
* (see handleUnsentRoleMessage())
*/
@Test
public void testInitialMoveToMasterNoRole() throws Exception {
int xid = 43;
// first, move us to WAIT_INITIAL_ROLE_STATE
moveToWaitInitialRole();
assertEquals(OFChannelHandler.ChannelState.WAIT_INITIAL_ROLE,
handler.getStateForTesting());
OFStatsReply sr = createDescriptionStatsReply();
reset(controller);
reset(swImplBase);
expect(controller.getOFSwitchInstance((OFDescStatsReply) sr, ofVersion))
.andReturn(swImplBase).anyTimes();
expect(controller.getDebugCounter())
.andReturn(debugCounterService).anyTimes();
expect(controller.addActivatedMasterSwitch(1000, swImplBase))
.andReturn(true).once();
replay(controller);
reset(swImplBase);
swImplBase.setRole(Role.MASTER);
expectLastCall().once();
swImplBase.startDriverHandshake();
expectLastCall().once();
expect(swImplBase.isDriverHandshakeComplete())
.andReturn(true).once();
expect(swImplBase.getStringId())
.andReturn(null).anyTimes();
expect(swImplBase.getRole()).andReturn(Role.MASTER).once();
expect(swImplBase.getId())
.andReturn(1000L).once();
// Set the role
setupSwitchSendRoleRequestAndVerify(false, xid, Role.MASTER);
assertEquals(OFChannelHandler.ChannelState.MASTER,
handler.getStateForTesting());
}
/**
* Move the channel from scratch to WAIT_INITIAL_ROLE state.
* Builds on moveToWaitInitialRole().
* adds testing for WAIT_INITAL_ROLE state
*
* We let the initial role request time out. Role support should be
* disabled but the switch should be activated.
*/
/* TBD
@Test
public void testInitialMoveToMasterTimeout() throws Exception {
int timeout = 50;
handler.useRoleChangerWithOtherTimeoutForTesting(timeout);
int xid = 4343;
// first, move us to WAIT_INITIAL_ROLE_STATE
moveToWaitInitialRole();
assertEquals(OFChannelHandler.ChannelState.WAIT_INITIAL_ROLE,
handler.getStateForTesting());
// prepare mocks and inject the role reply message
reset(swImplBase);
// Set the role
swImplBase.setRole(Role.MASTER);
expectLastCall().once();
swImplBase.startDriverHandshake();
expectLastCall().once();
expect(swImplBase.isDriverHandshakeComplete())
.andReturn(false).once();
if (ofVersion == OFVersion.OF_10) {
expect(swImplBase.getAttribute(IOFSwitch.SWITCH_SUPPORTS_NX_ROLE))
.andReturn(true).once();
swImplBase.write(capture(writeCapture),
EasyMock.<FloodlightContext>anyObject());
expectLastCall().anyTimes();
}
expect(swImplBase.getNextTransactionId()).andReturn(xid).once();
assertEquals(OFChannelHandler.ChannelState.WAIT_INITIAL_ROLE,
handler.getStateForTesting());
// Set the role
setupSwitchSendRoleRequestAndVerify(null, xid, Role.MASTER);
assertEquals(OFChannelHandler.ChannelState.WAIT_INITIAL_ROLE,
handler.getStateForTesting());
OFMessage m = buildOFMessage(OFType.ECHO_REPLY);
setupMessageEvent(Collections.<OFMessage>singletonList(m));
Thread.sleep(timeout+5);
verify(controller);
reset(controller);
expect(controller.addActivatedMasterSwitch(1000, swImplBase))
.andReturn(true).once();
controller.flushAll();
expectLastCall().once();
replay(controller);
handler.messageReceived(ctx, messageEvent);
assertEquals(OFChannelHandler.ChannelState.MASTER,
handler.getStateForTesting());
}
*/
/**
* Move the channel from scratch to SLAVE state.
* Builds on doMoveToWaitInitialRole().
* adds testing for WAIT_INITAL_ROLE state
*
* This method tests the case that the switch does NOT support roles.
* The channel handler still needs to send the initial request to find
* out that whether the switch supports roles.
*
*/
@Test
public void testInitialMoveToSlaveNoRole() throws Exception {
int xid = 44;
// first, move us to WAIT_INITIAL_ROLE_STATE
moveToWaitInitialRole();
assertEquals(OFChannelHandler.ChannelState.WAIT_INITIAL_ROLE,
handler.getStateForTesting());
reset(swImplBase);
// Set the role
setupSwitchSendRoleRequestAndVerify(false, xid, Role.SLAVE);
assertEquals(OFChannelHandler.ChannelState.WAIT_INITIAL_ROLE,
handler.getStateForTesting());
}
/**
* Move the channel from scratch to SLAVE state.
* Builds on doMoveToWaitInitialRole().
* adds testing for WAIT_INITAL_ROLE state
*
* We let the initial role request time out. The switch should be
* disconnected
*/
/* TBD
@Test
public void testInitialMoveToSlaveTimeout() throws Exception {
int timeout = 50;
handler.useRoleChangerWithOtherTimeoutForTesting(timeout);
int xid = 4444;
// first, move us to WAIT_INITIAL_ROLE_STATE
moveToWaitInitialRole();
assertEquals(OFChannelHandler.ChannelState.WAIT_INITIAL_ROLE,
handler.getStateForTesting());
// Set the role
setupSwitchSendRoleRequestAndVerify(null, xid, Role.SLAVE);
assertEquals(OFChannelHandler.ChannelState.WAIT_INITIAL_ROLE,
handler.getStateForTesting());
// prepare mocks and inject the role reply message
reset(sw);
sw.setAttribute(IOFSwitch.SWITCH_SUPPORTS_NX_ROLE, false);
expectLastCall().once();
sw.setRole(Role.SLAVE);
expectLastCall().once();
sw.disconnectSwitch(); // Make sure we disconnect
expectLastCall().once();
replay(sw);
OFMessage m = buildOFMessage(OFType.ECHO_REPLY);
Thread.sleep(timeout+5);
sendMessageToHandlerWithControllerReset(Collections.singletonList(m));
}
*/
/**
* Move channel from scratch to WAIT_INITIAL_STATE, then MASTER,
* then SLAVE for cases where the switch does not support roles.
* I.e., the final SLAVE transition should disconnect the switch.
*/
@Test
public void testNoRoleInitialToMasterToSlave() throws Exception {
int xid = 46;
reset(swImplBase);
replay(swImplBase);
reset(controller);
replay(controller);
// First, lets move the state to MASTER without role support
testInitialMoveToMasterNoRole();
assertEquals(OFChannelHandler.ChannelState.MASTER,
handler.getStateForTesting());
// try to set master role again. should be a no-op
setupSwitchRoleChangeUnsupported(xid, Role.MASTER);
assertEquals(OFChannelHandler.ChannelState.MASTER,
handler.getStateForTesting());
setupSwitchRoleChangeUnsupported(xid, Role.SLAVE);
//switch does not support role message. there is no role set
assertEquals(OFChannelHandler.ChannelState.MASTER,
handler.getStateForTesting());
}
/**
* Move the channel to MASTER state.
* Expects that the channel is in MASTER or SLAVE state.
*
*/
public void changeRoleToMasterWithRequest() throws Exception {
int xid = 4242;
assertTrue("This method can only be called when handler is in " +
"MASTER or SLAVE role", handler.isHandshakeComplete());
reset(swImplBase);
reset(controller);
// Set the role
setupSwitchSendRoleRequestAndVerify(true, xid, Role.MASTER);
// prepare mocks and inject the role reply message
reset(controller);
expect(controller.addActivatedMasterSwitch(1000, swImplBase))
.andReturn(true).once();
OFMessage reply = getRoleReply(xid, Role.MASTER);
// sendMessageToHandler will verify and rest controller mock
OFStatsReply sr = createDescriptionStatsReply();
setupMessageEvent(Collections.<OFMessage>singletonList(reply));
// mock controller
reset(controller);
reset(swImplBase);
expect(controller.getOFSwitchInstance((OFDescStatsReply) sr, ofVersion))
.andReturn(swImplBase).anyTimes();
expect(controller.getDebugCounter())
.andReturn(debugCounterService).anyTimes();
controller.transitionToMasterSwitch(1000);
expectLastCall().once();
replay(controller);
expect(swImplBase.getStringId())
.andReturn(null).anyTimes();
expect(swImplBase.getRole()).andReturn(Role.EQUAL).atLeastOnce();
expect(swImplBase.getNextTransactionId())
.andReturn(xid).anyTimes();
expect(swImplBase.getId())
.andReturn(1000L).once();
swImplBase.setRole(Role.MASTER);
expectLastCall().once();
replay(swImplBase);
// send the description stats reply
handler.messageReceived(ctx, messageEvent);
assertEquals(OFChannelHandler.ChannelState.MASTER,
handler.getStateForTesting());
}
/**
* Move the channel to SLAVE state.
* Expects that the channel is in MASTER or SLAVE state.
*
*/
public void changeRoleToSlaveWithRequest() throws Exception {
int xid = 2323;
assertTrue("This method can only be called when handler is in " +
"MASTER or SLAVE role", handler.isHandshakeComplete());
// Set the role
reset(controller);
reset(swImplBase);
swImplBase.write(capture(writeCapture));
expectLastCall().anyTimes();
expect(swImplBase.getNextTransactionId())
.andReturn(xid).anyTimes();
if (ofVersion == OFVersion.OF_10) {
expect(swImplBase.getAttribute(IOFSwitch.SWITCH_SUPPORTS_NX_ROLE))
.andReturn(true).once();
swImplBase.write(capture(writeCapture));
expectLastCall().anyTimes();
}
replay(swImplBase);
handler.sendRoleRequest(Role.SLAVE, RoleRecvStatus.MATCHED_SET_ROLE);
List<OFMessage> msgs = getMessagesFromCapture();
assertEquals(1, msgs.size());
verifyNiciraMessage((OFExperimenter) msgs.get(0));
OFMessage reply = getRoleReply(xid, Role.SLAVE);
OFStatsReply sr = createDescriptionStatsReply();
setupMessageEvent(Collections.<OFMessage>singletonList(reply));
// mock controller
reset(controller);
reset(swImplBase);
controller.transitionToEqualSwitch(1000);
expectLastCall().once();
expect(controller.getOFSwitchInstance((OFDescStatsReply) sr, ofVersion))
.andReturn(swImplBase).anyTimes();
expect(controller.getDebugCounter())
.andReturn(debugCounterService).anyTimes();
replay(controller);
expect(swImplBase.getStringId())
.andReturn(null).anyTimes();
expect(swImplBase.getRole()).andReturn(Role.MASTER).atLeastOnce();
expect(swImplBase.getNextTransactionId())
.andReturn(xid).anyTimes();
// prepare mocks and inject the role reply message
swImplBase.setRole(Role.SLAVE);
expectLastCall().once();
expect(swImplBase.getId())
.andReturn(1000L).once();
replay(swImplBase);
handler.messageReceived(ctx, messageEvent);
assertEquals(OFChannelHandler.ChannelState.EQUAL,
handler.getStateForTesting());
}
@Test
public void testMultiRoleChange1() throws Exception {
moveToMasterWithHandshakeComplete();
changeRoleToMasterWithRequest();
changeRoleToSlaveWithRequest();
changeRoleToSlaveWithRequest();
changeRoleToMasterWithRequest();
changeRoleToSlaveWithRequest();
}
@Test
public void testMultiRoleChange2() throws Exception {
moveToSlaveWithHandshakeComplete();
changeRoleToMasterWithRequest();
changeRoleToSlaveWithRequest();
changeRoleToSlaveWithRequest();
changeRoleToMasterWithRequest();
changeRoleToSlaveWithRequest();
}
/**
* Start from scratch and reply with an unexpected error to the role
* change request.
* Builds on doMoveToWaitInitialRole()
* adds testing for WAIT_INITAL_ROLE state
*/
/* TBD
@Test
public void testInitialRoleChangeOtherError() throws Exception {
int xid = 4343;
// first, move us to WAIT_INITIAL_ROLE_STATE
moveToWaitInitialRole();
assertEquals(OFChannelHandler.ChannelState.WAIT_INITIAL_ROLE,
handler.getStateForTesting());
reset(swImplBase);
// Set the role
setupSwitchSendRoleRequestAndVerify(true, xid, Role.MASTER);
assertEquals(OFChannelHandler.ChannelState.WAIT_INITIAL_ROLE,
handler.getStateForTesting());
// FIXME: shouldn't use ordinal(), but OFError is broken
OFMessage err = factory.errorMsgs().buildBadActionErrorMsg()
.setCode(OFBadActionCode.BAD_LEN)
.setXid(2000)
.build();
verify(swImplBase);
reset(swImplBase);
replay(swImplBase);
sendMessageToHandlerWithControllerReset(Collections.singletonList(err));
verifyExceptionCaptured(SwitchStateException.class);
}
*/
/**
* Test dispatch of messages while in MASTER role.
*/
@Test
public void testMessageDispatchMaster() throws Exception {
moveToMasterWithHandshakeComplete();
// Send packet in. expect dispatch
OFPacketIn pi = (OFPacketIn)
buildOFMessage(OFType.PACKET_IN);
setupMessageEvent(Collections.<OFMessage>singletonList(pi));
reset(swImplBase);
swImplBase.handleMessage(pi);
expectLastCall().once();
replay(swImplBase);
// send the description stats reply
handler.messageReceived(ctx, messageEvent);
assertEquals(OFChannelHandler.ChannelState.MASTER,
handler.getStateForTesting());
verify(controller);
// TODO: many more to go
}
/**
* Test port status message handling while MASTER.
*
*/
/* Patrick: TBD
@Test
public void testPortStatusMessageMaster() throws Exception {
long dpid = featuresReply.getDatapathId().getLong();
testInitialMoveToMasterWithRole();
List<OFPortDesc> ports = new ArrayList<OFPortDesc>();
// A dummy port.
OFPortDesc p = factory.buildPortDesc()
.setName("Eth1")
.setPortNo(OFPort.ofInt(1))
.build();
ports.add(p);
p.setName("Port1");
p.setPortNumber((short)1);
OFPortStatus ps = (OFPortStatus)buildOFMessage(OFType.PORT_STATUS);
ps.setDesc(p);
// The events we expect sw.handlePortStatus to return
// We'll just use the same list for all valid OFPortReasons and add
// arbitrary events for arbitrary ports that are not necessarily
// related to the port status message. Our goal
// here is not to return the correct set of events but the make sure
// that a) sw.handlePortStatus is called
// b) the list of events sw.handlePortStatus returns is sent
// as IOFSwitchListener notifications.
OrderedCollection<PortChangeEvent> events =
new LinkedHashSetWrapper<PortChangeEvent>();
ImmutablePort p1 = ImmutablePort.create("eth1", (short)1);
ImmutablePort p2 = ImmutablePort.create("eth2", (short)2);
ImmutablePort p3 = ImmutablePort.create("eth3", (short)3);
ImmutablePort p4 = ImmutablePort.create("eth4", (short)4);
ImmutablePort p5 = ImmutablePort.create("eth5", (short)5);
events.add(new PortChangeEvent(p1, PortChangeType.ADD));
events.add(new PortChangeEvent(p2, PortChangeType.DELETE));
events.add(new PortChangeEvent(p3, PortChangeType.UP));
events.add(new PortChangeEvent(p4, PortChangeType.DOWN));
events.add(new PortChangeEvent(p5, PortChangeType.OTHER_UPDATE));
for (OFPortReason reason: OFPortReason.values()) {
ps.setReason(reason.getReasonCode());
reset(sw);
expect(sw.getId()).andReturn(dpid).anyTimes();
expect(sw.processOFPortStatus(ps)).andReturn(events).once();
replay(sw);
reset(controller);
controller.notifyPortChanged(sw, p1, PortChangeType.ADD);
controller.notifyPortChanged(sw, p2, PortChangeType.DELETE);
controller.notifyPortChanged(sw, p3, PortChangeType.UP);
controller.notifyPortChanged(sw, p4, PortChangeType.DOWN);
controller.notifyPortChanged(sw, p5, PortChangeType.OTHER_UPDATE);
sendMessageToHandlerNoControllerReset(
Collections.<OFMessage>singletonList(ps));
verify(sw);
verify(controller);
}
}
*/
/**
* Build an OF message.
* @throws IOException
*/
private OFMessage buildOFMessage(OFType t) throws IOException {
OFMessage m = null;
switch (t) {
case HELLO:
// The OF protocol requires us to start things off by sending the highest
// version of the protocol supported.
// bitmap represents OF1.0 (ofp_version=0x01) and OF1.3 (ofp_version=0x04)
// see Sec. 7.5.1 of the OF1.3.4 spec
if (ofVersion == OFVersion.OF_13) {
U32 bitmap = U32.ofRaw(0x00000012);
OFHelloElem hem = factory13.buildHelloElemVersionbitmap()
.setBitmaps(Collections.singletonList(bitmap))
.build();
m = factory13.buildHello()
.setXid(2000)
.setElements(Collections.singletonList(hem))
.build();
} else {
m = factory10.buildHello()
.setXid(2000)
.build();
}
break;
case FEATURES_REQUEST:
m = factory.buildFeaturesRequest()
.setXid(2000)
.build();
break;
case FEATURES_REPLY:
m = factory.buildFeaturesReply()
.setDatapathId(DatapathId.of(1000L))
.setXid(2000)
.build();
break;
case SET_CONFIG:
m = factory.buildSetConfig()
.setMissSendLen((short) 0xffff)
.setXid(2000)
.build();
break;
case BARRIER_REQUEST:
m = factory.buildBarrierRequest()
.setXid(2000)
.build();
break;
case GET_CONFIG_REQUEST:
m = factory.buildGetConfigRequest()
.setXid(2000)
.build();
break;
case GET_CONFIG_REPLY:
m = factory.buildGetConfigReply()
.setMissSendLen((short) 0xffff)
.setXid(2000)
.build();
break;
case STATS_REQUEST:
break;
case STATS_REPLY:
m = factory.buildDescStatsReply()
.setDpDesc("Datapath Description")
.setHwDesc("Hardware Secription")
.setMfrDesc("Manufacturer Desctiption")
.setSerialNum("Serial Number")
.setSwDesc("Software Desription")
.build();
break;
case ECHO_REQUEST:
m = factory.buildEchoRequest()
.setXid(2000)
.build();
break;
case FLOW_REMOVED:
break;
case PACKET_IN:
m = factory.buildPacketIn()
.setReason(OFPacketInReason.NO_MATCH)
.setTotalLen(1500)
.setXid(2000)
.build();
break;
case PORT_STATUS:
m = factory.buildPortStatus()
.setXid(2000)
.build();
break;
default:
m = factory.buildFeaturesRequest()
.setXid(2000)
.build();
break;
}
return (m);
}
}