add pipeline for nokia olt device

Change-Id: I60f2988910eea5f9ffdfd14e7d47863af63b2691

+/*
+ * Copyright 2016-present Open Networking Laboratory
+ *
+ * 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.onosproject.driver.pipeline;
+
+import com.google.common.cache.Cache;
+import com.google.common.cache.CacheBuilder;
+import com.google.common.cache.RemovalCause;
+import com.google.common.cache.RemovalNotification;
+import com.google.common.collect.Lists;
+import org.apache.commons.lang3.tuple.ImmutablePair;
+import org.apache.commons.lang3.tuple.Pair;
+import org.onlab.osgi.ServiceDirectory;
+import org.onlab.packet.EthType;
+import org.onlab.packet.IPv4;
+import org.onlab.packet.VlanId;
+import org.onlab.util.KryoNamespace;
+import org.onosproject.core.ApplicationId;
+import org.onosproject.core.CoreService;
+import org.onosproject.net.DeviceId;
+import org.onosproject.net.PortNumber;
+import org.onosproject.net.behaviour.NextGroup;
+import org.onosproject.net.behaviour.Pipeliner;
+import org.onosproject.net.behaviour.PipelinerContext;
+import org.onosproject.net.driver.AbstractHandlerBehaviour;
+import org.onosproject.net.flow.DefaultFlowRule;
+import org.onosproject.net.flow.DefaultTrafficSelector;
+import org.onosproject.net.flow.DefaultTrafficTreatment;
+import org.onosproject.net.flow.FlowRule;
+import org.onosproject.net.flow.FlowRuleOperations;
+import org.onosproject.net.flow.FlowRuleOperationsContext;
+import org.onosproject.net.flow.FlowRuleService;
+import org.onosproject.net.flow.TrafficSelector;
+import org.onosproject.net.flow.TrafficTreatment;
+import org.onosproject.net.flow.criteria.Criteria;
+import org.onosproject.net.flow.criteria.Criterion;
+import org.onosproject.net.flow.criteria.EthTypeCriterion;
+import org.onosproject.net.flow.criteria.IPCriterion;
+import org.onosproject.net.flow.criteria.IPProtocolCriterion;
+import org.onosproject.net.flow.criteria.PortCriterion;
+import org.onosproject.net.flow.criteria.VlanIdCriterion;
+import org.onosproject.net.flow.instructions.Instruction;
+import org.onosproject.net.flow.instructions.Instructions;
+import org.onosproject.net.flow.instructions.L2ModificationInstruction;
+import org.onosproject.net.flowobjective.FilteringObjective;
+import org.onosproject.net.flowobjective.FlowObjectiveStore;
+import org.onosproject.net.flowobjective.ForwardingObjective;
+import org.onosproject.net.flowobjective.NextObjective;
+import org.onosproject.net.flowobjective.Objective;
+import org.onosproject.net.flowobjective.ObjectiveError;
+import org.onosproject.net.group.DefaultGroupBucket;
+import org.onosproject.net.group.DefaultGroupDescription;
+import org.onosproject.net.group.DefaultGroupKey;
+import org.onosproject.net.group.Group;
+import org.onosproject.net.group.GroupBucket;
+import org.onosproject.net.group.GroupBuckets;
+import org.onosproject.net.group.GroupDescription;
+import org.onosproject.net.group.GroupEvent;
+import org.onosproject.net.group.GroupKey;
+import org.onosproject.net.group.GroupListener;
+import org.onosproject.net.group.GroupService;
+import org.onosproject.store.serializers.KryoNamespaces;
+import org.onosproject.store.service.StorageService;
+import org.slf4j.Logger;
+
+import java.util.Collection;
+import java.util.Collections;
+import java.util.List;
+import java.util.Optional;
+import java.util.concurrent.TimeUnit;
+import java.util.stream.Collectors;
+import java.util.Iterator;
+
+
+import static org.slf4j.LoggerFactory.getLogger;
+
+/**
+ * Pipeliner for OLT device.
+ */
+
+public class NokiaOltPipeline extends AbstractHandlerBehaviour implements Pipeliner {
+
+    private static final Integer QQ_TABLE = 1;
+    private static final short MCAST_VLAN = 4000;
+    private static final String OLTCOOKIES = "olt-cookies-must-be-unique";
+    private final Logger log = getLogger(getClass());
+
+    private ServiceDirectory serviceDirectory;
+    private FlowRuleService flowRuleService;
+    private GroupService groupService;
+    private CoreService coreService;
+    private StorageService storageService;
+
+    private DeviceId deviceId;
+    private ApplicationId appId;
+
+
+    protected FlowObjectiveStore flowObjectiveStore;
+
+    private Cache<GroupKey, NextObjective> pendingGroups;
+
+    protected static KryoNamespace appKryo = new KryoNamespace.Builder()
+            .register(KryoNamespaces.API)
+            .register(GroupKey.class)
+            .register(DefaultGroupKey.class)
+            .register(OLTPipelineGroup.class)
+            .build("OltPipeline");
+    @Override
+    public void init(DeviceId deviceId, PipelinerContext context) {
+        log.debug("Initiate OLT pipeline");
+        this.serviceDirectory = context.directory();
+        this.deviceId = deviceId;
+
+        flowRuleService = serviceDirectory.get(FlowRuleService.class);
+        coreService = serviceDirectory.get(CoreService.class);
+        groupService = serviceDirectory.get(GroupService.class);
+        flowObjectiveStore = context.store();
+        storageService = serviceDirectory.get(StorageService.class);
+
+        appId = coreService.registerApplication(
+                "org.onosproject.driver.OLTPipeline");
+
+
+        pendingGroups = CacheBuilder.newBuilder()
+                .expireAfterWrite(20, TimeUnit.SECONDS)
+                .removalListener((RemovalNotification<GroupKey, NextObjective> notification) -> {
+                    if (notification.getCause() == RemovalCause.EXPIRED) {
+                        fail(notification.getValue(), ObjectiveError.GROUPINSTALLATIONFAILED);
+                    }
+                }).build();
+
+        groupService.addListener(new InnerGroupListener());
+
+    }
+
+    @Override
+    public void filter(FilteringObjective filter) {
+        Instructions.OutputInstruction output;
+
+        if (filter.meta() != null && !filter.meta().immediate().isEmpty()) {
+            output = (Instructions.OutputInstruction) filter.meta().immediate().stream()
+                    .filter(t -> t.type().equals(Instruction.Type.OUTPUT))
+                    .limit(1)
+                    .findFirst().get();
+
+            if (output == null || !output.port().equals(PortNumber.CONTROLLER)) {
+                log.error("OLT can only filter packet to controller");
+                fail(filter, ObjectiveError.UNSUPPORTED);
+                return;
+            }
+        } else {
+            fail(filter, ObjectiveError.BADPARAMS);
+            return;
+        }
+
+        if (filter.key().type() != Criterion.Type.IN_PORT) {
+            fail(filter, ObjectiveError.BADPARAMS);
+            return;
+        }
+
+        EthTypeCriterion ethType = (EthTypeCriterion)
+                filterForCriterion(filter.conditions(), Criterion.Type.ETH_TYPE);
+
+        if (ethType == null) {
+            fail(filter, ObjectiveError.BADPARAMS);
+            return;
+        }
+
+        if (ethType.ethType().equals(EthType.EtherType.EAPOL.ethType())) {
+            provisionEapol(filter, ethType, output);
+        } else if (ethType.ethType().equals(EthType.EtherType.IPV4.ethType())) {
+            IPProtocolCriterion ipProto = (IPProtocolCriterion)
+                    filterForCriterion(filter.conditions(), Criterion.Type.IP_PROTO);
+            if (ipProto.protocol() == IPv4.PROTOCOL_IGMP) {
+                provisionIgmp(filter, ethType, ipProto, output);
+            } else {
+                log.error("OLT can only filter igmp");
+                fail(filter, ObjectiveError.UNSUPPORTED);
+            }
+        } else {
+            log.error("OLT can only filter eapol and igmp");
+            fail(filter, ObjectiveError.UNSUPPORTED);
+        }
+
+    }
+
+    private void installObjective(FlowRule.Builder ruleBuilder, Objective objective) {
+        FlowRuleOperations.Builder flowBuilder = FlowRuleOperations.builder();
+        switch (objective.op()) {
+
+            case ADD:
+                flowBuilder.add(ruleBuilder.build());
+                break;
+            case REMOVE:
+                flowBuilder.remove(ruleBuilder.build());
+                break;
+            default:
+                log.warn("Unknown operation {}", objective.op());
+        }
+
+        flowRuleService.apply(flowBuilder.build(new FlowRuleOperationsContext() {
+            @Override
+            public void onSuccess(FlowRuleOperations ops) {
+                objective.context().ifPresent(context -> context.onSuccess(objective));
+            }
+
+            @Override
+            public void onError(FlowRuleOperations ops) {
+                objective.context()
+                        .ifPresent(context -> context.onError(objective, ObjectiveError.FLOWINSTALLATIONFAILED));
+            }
+        }));
+    }
+
+    @Override
+    public void forward(ForwardingObjective fwd) {
+
+        if (checkForMulticast(fwd)) {
+            processMulticastRule(fwd);
+            return;
+        }
+
+        TrafficTreatment treatment = fwd.treatment();
+
+        List<Instruction> instructions = treatment.allInstructions();
+
+        Optional<Instruction> vlanIntruction = instructions.stream()
+                .filter(i -> i.type() == Instruction.Type.L2MODIFICATION)
+                .filter(i -> ((L2ModificationInstruction) i).subtype() ==
+                        L2ModificationInstruction.L2SubType.VLAN_PUSH ||
+                        ((L2ModificationInstruction) i).subtype() ==
+                                L2ModificationInstruction.L2SubType.VLAN_POP)
+                .findAny();
+
+        if (vlanIntruction.isPresent()) {
+            L2ModificationInstruction vlanIns =
+                    (L2ModificationInstruction) vlanIntruction.get();
+
+            if (vlanIns.subtype() == L2ModificationInstruction.L2SubType.VLAN_PUSH) {
+                installUpstreamRules(fwd);
+            } else if (vlanIns.subtype() == L2ModificationInstruction.L2SubType.VLAN_POP) {
+                installDownstreamRules(fwd);
+            } else {
+                log.error("Unknown OLT operation: {}", fwd);
+                fail(fwd, ObjectiveError.UNSUPPORTED);
+                return;
+            }
+
+            pass(fwd);
+        } else {
+            TrafficSelector selector = fwd.selector();
+
+            if (fwd.treatment() != null) {
+                // Deal with SPECIFIC and VERSATILE in the same manner.
+                FlowRule.Builder ruleBuilder = DefaultFlowRule.builder()
+                        .forDevice(deviceId)
+                        .withSelector(selector)
+                        .fromApp(fwd.appId())
+                        .withPriority(fwd.priority())
+                        .withTreatment(fwd.treatment());
+
+                if (fwd.permanent()) {
+                    ruleBuilder.makePermanent();
+                } else {
+                    ruleBuilder.makeTemporary(fwd.timeout());
+                }
+                installObjective(ruleBuilder, fwd);
+
+            } else {
+                log.error("No treatment error: {}", fwd);
+                fail(fwd, ObjectiveError.UNSUPPORTED);
+            }
+        }
+
+    }
+
+
+    @Override
+    public void next(NextObjective nextObjective) {
+        if (nextObjective.type() != NextObjective.Type.BROADCAST) {
+            log.error("OLT only supports broadcast groups.");
+            fail(nextObjective, ObjectiveError.BADPARAMS);
+        }
+
+        if (nextObjective.next().size() != 1) {
+            log.error("OLT only supports singleton broadcast groups.");
+            fail(nextObjective, ObjectiveError.BADPARAMS);
+        }
+
+        TrafficTreatment treatment = nextObjective.next().stream().findFirst().get();
+
+
+        GroupBucket bucket = DefaultGroupBucket.createAllGroupBucket(treatment);
+        GroupKey key = new DefaultGroupKey(appKryo.serialize(nextObjective.id()));
+
+
+        pendingGroups.put(key, nextObjective);
+
+        switch (nextObjective.op()) {
+            case ADD:
+                GroupDescription groupDesc =
+                        new DefaultGroupDescription(deviceId,
+                                                    GroupDescription.Type.ALL,
+                                                    new GroupBuckets(Collections.singletonList(bucket)),
+                                                    key,
+                                                    null,
+                                                    nextObjective.appId());
+                groupService.addGroup(groupDesc);
+                break;
+            case REMOVE:
+                groupService.removeGroup(deviceId, key, nextObjective.appId());
+                break;
+            case ADD_TO_EXISTING:
+                groupService.addBucketsToGroup(deviceId, key,
+                                               new GroupBuckets(Collections.singletonList(bucket)),
+                                               key, nextObjective.appId());
+                break;
+            case REMOVE_FROM_EXISTING:
+                groupService.removeBucketsFromGroup(deviceId, key,
+                                                    new GroupBuckets(Collections.singletonList(bucket)),
+                                                    key, nextObjective.appId());
+                break;
+            default:
+                log.warn("Unknown next objective operation: {}", nextObjective.op());
+        }
+
+
+    }
+
+    private void processMulticastRule(ForwardingObjective fwd) {
+        if (fwd.nextId() == null) {
+            log.error("Multicast objective does not have a next id");
+            fail(fwd, ObjectiveError.BADPARAMS);
+        }
+
+        GroupKey key = getGroupForNextObjective(fwd.nextId());
+
+        if (key == null) {
+            log.error("Group for forwarding objective missing: {}", fwd);
+            fail(fwd, ObjectiveError.GROUPMISSING);
+        }
+
+        Group group = groupService.getGroup(deviceId, key);
+        TrafficTreatment treatment =
+                buildTreatment(Instructions.createGroup(group.id()));
+
+        FlowRule rule = DefaultFlowRule.builder()
+                .fromApp(fwd.appId())
+                .forDevice(deviceId)
+                .forTable(0)
+                .makePermanent()
+                .withPriority(fwd.priority())
+                .withSelector(fwd.selector())
+                .withTreatment(treatment)
+                .build();
+
+        FlowRuleOperations.Builder builder = FlowRuleOperations.builder();
+        switch (fwd.op()) {
+
+            case ADD:
+                builder.add(rule);
+                break;
+            case REMOVE:
+                builder.remove(rule);
+                break;
+            case ADD_TO_EXISTING:
+            case REMOVE_FROM_EXISTING:
+                break;
+            default:
+                log.warn("Unknown forwarding operation: {}", fwd.op());
+        }
+
+        applyFlowRules(builder, fwd);
+
+    }
+
+    private boolean checkForMulticast(ForwardingObjective fwd) {
+
+        IPCriterion ip = (IPCriterion) filterForCriterion(fwd.selector().criteria(),
+                                                          Criterion.Type.IPV4_DST);
+
+        if (ip == null) {
+            return false;
+        }
+
+        return ip.ip().isMulticast();
+
+    }
+
+    private GroupKey getGroupForNextObjective(Integer nextId) {
+        NextGroup next = flowObjectiveStore.getNextGroup(nextId);
+        return appKryo.deserialize(next.data());
+
+    }
+
+    private void installDownstreamRules(ForwardingObjective fwd) {
+        List<Pair<Instruction, Instruction>> vlanOps =
+                vlanOps(fwd,
+                        L2ModificationInstruction.L2SubType.VLAN_POP);
+
+        if (vlanOps == null) {
+            return;
+        }
+
+        Instructions.OutputInstruction output = (Instructions.OutputInstruction) fetchOutput(fwd, "downstream");
+
+        if (output == null) {
+            return;
+        }
+
+        Pair<Instruction, Instruction> popAndRewrite = vlanOps.remove(0);
+
+        TrafficSelector selector = fwd.selector();
+
+        Criterion outerVlan = selector.getCriterion(Criterion.Type.VLAN_VID);
+        Criterion innerVlan = selector.getCriterion(Criterion.Type.INNER_VLAN_VID);
+        Criterion inport = selector.getCriterion(Criterion.Type.IN_PORT);
+        Criterion bullshit = Criteria.matchMetadata(output.port().toLong());
+
+        if (outerVlan == null || innerVlan == null || inport == null) {
+            log.error("Forwarding objective is underspecified: {}", fwd);
+            fail(fwd, ObjectiveError.BADPARAMS);
+            return;
+        }
+
+        Criterion innerVid = Criteria.matchVlanId(((VlanIdCriterion) innerVlan).vlanId());
+
+        FlowRule.Builder outer = DefaultFlowRule.builder()
+                .fromApp(fwd.appId())
+                .forDevice(deviceId)
+                .makePermanent()
+                .withPriority(fwd.priority())
+                .withSelector(buildSelector(inport, outerVlan, bullshit))
+                .withTreatment(buildTreatment(popAndRewrite.getLeft(),
+                        Instructions.transition(QQ_TABLE)));
+
+        FlowRule.Builder inner = DefaultFlowRule.builder()
+                .fromApp(fwd.appId())
+                .forDevice(deviceId)
+                .forTable(QQ_TABLE)
+                .makePermanent()
+                .withPriority(fwd.priority())
+                .withSelector(buildSelector(inport, innerVid))
+                .withTreatment(buildTreatment(popAndRewrite.getLeft(),
+                                              output));
+
+        applyRules(fwd, inner, outer);
+
+    }
+
+    private boolean hasUntaggedVlanTag(TrafficSelector selector) {
+        Iterator<Criterion> iter = selector.criteria().iterator();
+
+        while (iter.hasNext()) {
+            Criterion criterion = iter.next();
+            if (criterion.type() == Criterion.Type.VLAN_VID &&
+                    ((VlanIdCriterion) criterion).vlanId().toShort() == VlanId.UNTAGGED) {
+                return true;
+            }
+        }
+
+        return false;
+    }
+
+    private void installUpstreamRules(ForwardingObjective fwd) {
+        List<Pair<Instruction, Instruction>> vlanOps =
+                vlanOps(fwd,
+                        L2ModificationInstruction.L2SubType.VLAN_PUSH);
+        FlowRule.Builder inner;
+
+        if (vlanOps == null) {
+            return;
+        }
+
+        Instruction output = fetchOutput(fwd, "upstream");
+
+        if (output == null) {
+            return;
+        }
+
+        Pair<Instruction, Instruction> innerPair = vlanOps.remove(0);
+
+        Pair<Instruction, Instruction> outerPair = vlanOps.remove(0);
+
+
+        if (hasUntaggedVlanTag(fwd.selector())) {
+            inner = DefaultFlowRule.builder()
+                    .fromApp(fwd.appId())
+                    .forDevice(deviceId)
+                    .makePermanent()
+                    .withPriority(fwd.priority())
+                    .withSelector(fwd.selector())
+                    .withTreatment(buildTreatment(innerPair.getLeft(),
+                            innerPair.getRight(),
+                            Instructions.transition(QQ_TABLE)));
+        } else {
+            inner = DefaultFlowRule.builder()
+                    .fromApp(fwd.appId())
+                    .forDevice(deviceId)
+                    .makePermanent()
+                    .withPriority(fwd.priority())
+                    .withSelector(fwd.selector())
+                    .withTreatment(buildTreatment(
+                            innerPair.getRight(),
+                            Instructions.transition(QQ_TABLE)));
+        }
+
+
+        PortCriterion inPort = (PortCriterion)
+                fwd.selector().getCriterion(Criterion.Type.IN_PORT);
+
+        VlanId cVlanId = ((L2ModificationInstruction.ModVlanIdInstruction)
+                innerPair.getRight()).vlanId();
+
+        FlowRule.Builder outer = DefaultFlowRule.builder()
+                .fromApp(fwd.appId())
+                .forDevice(deviceId)
+                .forTable(QQ_TABLE)
+                .makePermanent()
+                .withPriority(fwd.priority())
+                .withSelector(buildSelector(inPort,
+                                            Criteria.matchVlanId(cVlanId)))
+                .withTreatment(buildTreatment(outerPair.getLeft(),
+                                              outerPair.getRight(),
+                                              output));
+
+        applyRules(fwd, inner, outer);
+
+    }
+
+    private Instruction fetchOutput(ForwardingObjective fwd, String direction) {
+        Instruction output = fwd.treatment().allInstructions().stream()
+                .filter(i -> i.type() == Instruction.Type.OUTPUT)
+                .findFirst().orElse(null);
+
+        if (output == null) {
+            log.error("OLT {} rule has no output", direction);
+            fail(fwd, ObjectiveError.BADPARAMS);
+            return null;
+        }
+        return output;
+    }
+
+    private List<Pair<Instruction, Instruction>> vlanOps(ForwardingObjective fwd,
+                                                         L2ModificationInstruction.L2SubType type) {
+
+        List<Pair<Instruction, Instruction>> vlanOps = findVlanOps(
+                fwd.treatment().allInstructions(), type);
+
+        if (vlanOps == null) {
+            String direction = type == L2ModificationInstruction.L2SubType.VLAN_POP
+                    ? "downstream" : "upstream";
+            log.error("Missing vlan operations in {} forwarding: {}", direction, fwd);
+            fail(fwd, ObjectiveError.BADPARAMS);
+            return null;
+        }
+        return vlanOps;
+    }
+
+
+    private List<Pair<Instruction, Instruction>> findVlanOps(List<Instruction> instructions,
+                                                             L2ModificationInstruction.L2SubType type) {
+
+        List<Instruction> vlanPushs = findL2Instructions(
+                type,
+                instructions);
+        List<Instruction> vlanSets = findL2Instructions(
+                L2ModificationInstruction.L2SubType.VLAN_ID,
+                instructions);
+
+        if (vlanPushs.size() != vlanSets.size()) {
+            return null;
+        }
+
+        List<Pair<Instruction, Instruction>> pairs = Lists.newArrayList();
+
+        for (int i = 0; i < vlanPushs.size(); i++) {
+            pairs.add(new ImmutablePair<>(vlanPushs.get(i), vlanSets.get(i)));
+        }
+        return pairs;
+    }
+
+    private List<Instruction> findL2Instructions(L2ModificationInstruction.L2SubType subType,
+                                                 List<Instruction> actions) {
+        return actions.stream()
+                .filter(i -> i.type() == Instruction.Type.L2MODIFICATION)
+                .filter(i -> ((L2ModificationInstruction) i).subtype() == subType)
+                .collect(Collectors.toList());
+    }
+
+    private void provisionEapol(FilteringObjective filter,
+                                EthTypeCriterion ethType,
+                                Instructions.OutputInstruction output) {
+
+        TrafficSelector selector = buildSelector(filter.key(), ethType);
+        TrafficTreatment treatment = buildTreatment(output);
+        buildAndApplyRule(filter, selector, treatment);
+
+    }
+
+    private void provisionIgmp(FilteringObjective filter, EthTypeCriterion ethType,
+                               IPProtocolCriterion ipProto,
+                               Instructions.OutputInstruction output) {
+        TrafficSelector selector = buildSelector(filter.key(), ethType, ipProto);
+        TrafficTreatment treatment = buildTreatment(output);
+        buildAndApplyRule(filter, selector, treatment);
+    }
+
+    private void buildAndApplyRule(FilteringObjective filter, TrafficSelector selector,
+                                   TrafficTreatment treatment) {
+        FlowRule rule = DefaultFlowRule.builder()
+                .fromApp(filter.appId())
+                .forDevice(deviceId)
+                .forTable(0)
+                .makePermanent()
+                .withSelector(selector)
+                .withTreatment(treatment)
+                .withPriority(filter.priority())
+                .build();
+
+        FlowRuleOperations.Builder opsBuilder = FlowRuleOperations.builder();
+
+        switch (filter.type()) {
+            case PERMIT:
+                opsBuilder.add(rule);
+                break;
+            case DENY:
+                opsBuilder.remove(rule);
+                break;
+            default:
+                log.warn("Unknown filter type : {}", filter.type());
+                fail(filter, ObjectiveError.UNSUPPORTED);
+        }
+
+        applyFlowRules(opsBuilder, filter);
+    }
+
+    private void applyRules(ForwardingObjective fwd,
+                            FlowRule.Builder inner, FlowRule.Builder outer) {
+        FlowRuleOperations.Builder builder = FlowRuleOperations.builder();
+        switch (fwd.op()) {
+            case ADD:
+                builder.add(inner.build()).add(outer.build());
+                break;
+            case REMOVE:
+                builder.remove(inner.build()).remove(outer.build());
+                break;
+            case ADD_TO_EXISTING:
+                break;
+            case REMOVE_FROM_EXISTING:
+                break;
+            default:
+                log.warn("Unknown forwarding operation: {}", fwd.op());
+        }
+
+        applyFlowRules(builder, fwd);
+    }
+
+    private void applyFlowRules(FlowRuleOperations.Builder builder,
+                                Objective objective) {
+        flowRuleService.apply(builder.build(new FlowRuleOperationsContext() {
+            @Override
+            public void onSuccess(FlowRuleOperations ops) {
+                pass(objective);
+            }
+
+            @Override
+            public void onError(FlowRuleOperations ops) {
+                fail(objective, ObjectiveError.FLOWINSTALLATIONFAILED);
+            }
+        }));
+    }
+
+    private Criterion filterForCriterion(Collection<Criterion> criteria, Criterion.Type type) {
+        return criteria.stream()
+                .filter(c -> c.type().equals(type))
+                .limit(1)
+                .findFirst().orElse(null);
+    }
+
+    private TrafficSelector buildSelector(Criterion... criteria) {
+
+
+        TrafficSelector.Builder sBuilder = DefaultTrafficSelector.builder();
+
+        for (Criterion c : criteria) {
+            sBuilder.add(c);
+        }
+
+        return sBuilder.build();
+    }
+
+    private TrafficTreatment buildTreatment(Instruction... instructions) {
+
+
+        TrafficTreatment.Builder tBuilder = DefaultTrafficTreatment.builder();
+
+        for (Instruction i : instructions) {
+            tBuilder.add(i);
+        }
+
+        return tBuilder.build();
+    }
+
+
+    private void fail(Objective obj, ObjectiveError error) {
+        obj.context().ifPresent(context -> context.onError(obj, error));
+    }
+
+    private void pass(Objective obj) {
+        obj.context().ifPresent(context -> context.onSuccess(obj));
+    }
+
+
+    private class InnerGroupListener implements GroupListener {
+        @Override
+        public void event(GroupEvent event) {
+            if (event.type() == GroupEvent.Type.GROUP_ADDED || event.type() == GroupEvent.Type.GROUP_UPDATED) {
+                GroupKey key = event.subject().appCookie();
+
+                NextObjective obj = pendingGroups.getIfPresent(key);
+                if (obj != null) {
+                    flowObjectiveStore.putNextGroup(obj.id(), new OLTPipelineGroup(key));
+                    pass(obj);
+                    pendingGroups.invalidate(key);
+                }
+            }
+        }
+    }
+
+    private static class OLTPipelineGroup implements NextGroup {
+
+        private final GroupKey key;
+
+        public OLTPipelineGroup(GroupKey key) {
+            this.key = key;
+        }
+
+        public GroupKey key() {
+            return key;
+        }
+
+        @Override
+        public byte[] data() {
+            return appKryo.serialize(key);
+        }
+
+    }
+
+    @Override
+    public List<String> getNextMappings(NextGroup nextGroup) {
+        // TODO Implementation deferred to vendor
+        return null;
+    }
+}

@@ -101,7 +101,7 @@
     <driver name="nokia-olt" extends="default"
             manufacturer="Nokia" hwVersion="SDOLT" swVersion="5.2.1">
         <behaviour api="org.onosproject.net.behaviour.Pipeliner"
-                   impl="org.onosproject.driver.pipeline.OltPipeline"/>
+                   impl="org.onosproject.driver.pipeline.NokiaOltPipeline"/>
     </driver>
     <driver name="g.fast" extends="default"
             manufacturer="TEST1" hwVersion="TEST2" swVersion="TEST3">