Merge pull request #10 from garnaat/add-status-command

Some refactoring.  Added a status command.  Rewrote the CLI to take more...

@@ -18,47 +18,96 @@ import click
 from kappa.context import Context
 
 
-@click.command()
-@click.option(
-    '--config',
-    help="Path to the Kappa config YAML file",
+@click.group()
+@click.argument(
+    'config',
     type=click.File('rb'),
     envvar='KAPPA_CONFIG',
-    default=None
 )
 @click.option(
     '--debug/--no-debug',
     default=False,
     help='Turn on debugging output'
 )
-@click.argument(
-    'command',
-    required=True,
-    type=click.Choice(['deploy', 'test', 'tail', 'add-event-sources', 'delete'])
-)
-def main(config=None, debug=False, command=None):
-    ctx = Context(config, debug)
-    if command == 'deploy':
-        click.echo('Deploying ...')
-        ctx.deploy()
+@click.pass_context
+def cli(ctx, config=None, debug=False):
+    config = config
+    ctx.obj['debug'] = debug
+    ctx.obj['config'] = config
+
+@cli.command()
+@click.pass_context
+def deploy(ctx):
+    context = Context(ctx.obj['config'], ctx.obj['debug'])
+    click.echo('deploying...')
+    context.deploy()
     click.echo('...done')
-    elif command == 'test':
-        click.echo('Sending test data ...')
-        ctx.test()
+    
+@cli.command()
+@click.pass_context
+def test(ctx):
+    context = Context(ctx.obj['config'], ctx.obj['debug'])
+    click.echo('testing...')
+    context.test()
     click.echo('...done')
-    elif command == 'tail':
-        events = ctx.tail()
-        for event in events:
-            print(event['message'])
-    elif command == 'delete':
-        click.echo('Deleting ...')
-        ctx.delete()
+    
+@cli.command()
+@click.pass_context
+def tail(ctx):
+    context = Context(ctx.obj['config'], ctx.obj['debug'])
+    click.echo('tailing logs...')
+    context.tail()
     click.echo('...done')
-    elif command == 'add-event-sources':
-        click.echo('Adding event sources ...')
-        ctx.add_event_sources()
+    
+@cli.command()
+@click.pass_context
+def status(ctx):
+    context = Context(ctx.obj['config'], ctx.obj['debug'])
+    status = context.status()
+    click.echo(click.style('Stack', bold=True))
+    if status['stack']:
+        for stack in status['stack']['Stacks']:
+            line = '    {}: {}'.format(stack['StackId'], stack['StackStatus'])
+            click.echo(click.style(line, fg='green'))
+    else:
+        click.echo(click.style('    None', fg='green'))
+    click.echo(click.style('Function', bold=True))
+    if status['function']:
+        line = '    {}'.format(
+            status['function']['Configuration']['FunctionName'])
+        click.echo(click.style(line, fg='green'))
+    else:
+        click.echo(click.style('    None', fg='green'))
+    click.echo(click.style('Event Sources', bold=True))
+    if status['event_sources']:
+        for event_source in status['event_sources']:
+            if 'EventSource' in event_source:
+                line = '    {}: {}'.format(
+                    event_source['EventSource'], event_source['IsActive'])
+                click.echo(click.style(line, fg='green'))
+            else:
+                line = '    {}'.format(
+                    event_source['CloudFunctionConfiguration']['Id'])
+                click.echo(click.style(line, fg='green'))
+    else:
+        click.echo(click.style('    None', fg='green'))
+    
+@cli.command()
+@click.pass_context
+def delete(ctx):
+    context = Context(ctx.obj['config'], ctx.obj['debug'])
+    click.echo('deleting...')
+    context.delete()
+    click.echo('...done')
+    
+@cli.command()
+@click.pass_context
+def add_event_sources(ctx):
+    context = Context(ctx.obj['config'], ctx.obj['debug'])
+    click.echo('adding event sources...')
+    context.add_event_sources()
     click.echo('...done')
 
 
 if __name__ == '__main__':
-    main()
+    cli(obj={})

@@ -108,10 +108,7 @@ class Context(object):
             event_source.add(self.function)
 
     def deploy(self):
-        if self._stack.exists():
         self._stack.update()
-        else:
-            self._stack.create()
         self.function.upload()
 
     def test(self):
@@ -123,3 +120,14 @@ class Context(object):
     def delete(self):
         self._stack.delete()
         self.function.delete()
+        for event_source in self.event_sources:
+            event_source.remove(self.function)
+
+    def status(self):
+        status = {}
+        status['stack'] = self._stack.status()
+        status['function'] = self.function.status()
+        status['event_sources'] = []
+        for event_source in self.event_sources:
+            status['event_sources'].append(event_source.status(self.function))
+        return status

@@ -13,6 +13,8 @@
 
 import logging
 
+from botocore.exceptions import ClientError
+
 import kappa.aws
 
 LOG = logging.getLogger(__name__)
@@ -70,6 +72,17 @@ class KinesisEventSource(EventSource):
             LOG.debug(response)
         return response
 
+    def status(self, function):
+        LOG.debug('getting status for event source %s', self.arn)
+        try:
+            response = self._lambda.get_event_source(
+                UUID=self._get_uuid(function))
+            LOG.debug(response)
+        except ClientError:
+            LOG.debug('event source %s does not exist', self.arn)
+            response = None
+        return response
+
 
 class S3EventSource(EventSource):
 
@@ -112,3 +125,12 @@ class S3EventSource(EventSource):
                     Bucket=self._get_bucket_name(),
                     NotificationConfiguration=response)
                 LOG.debug(response)
+
+    def status(self, function):
+        LOG.debug('status for s3 notification for %s', function.name)
+        response = self._s3.get_bucket_notification(
+            Bucket=self._get_bucket_name())
+        LOG.debug(response)
+        if 'CloudFunctionConfiguration' not in response:
+            response = None
+        return response

@@ -15,6 +15,8 @@ import logging
 import os
 import zipfile
 
+from botocore.exceptions import ClientError
+
 import kappa.aws
 import kappa.log
 
@@ -148,6 +150,17 @@ class Function(object):
         LOG.debug(response)
         return response
 
+    def status(self):
+        LOG.debug('getting status for function %s', self.name)
+        try:
+            response = self._lambda_svc.get_function(
+                FunctionName=self.name)
+            LOG.debug(response)
+        except ClientError:
+            LOG.debug('function %s not found', self.name)
+            response = None
+        return response
+
     def invoke_asynch(self, data_file):
         LOG.debug('_invoke_async %s', data_file)
         with open(data_file) as fp:

@@ -98,7 +98,7 @@ class Stack(object):
                 msg = 'Could not create stack %s: %s' % (self.name, status)
                 raise ValueError(msg)
 
-    def create(self):
+    def _create(self):
         LOG.debug('create_stack: stack_name=%s', self.name)
         template_body = open(self.template_path).read()
         try:
@@ -110,7 +110,7 @@ class Stack(object):
             LOG.exception('Unable to create stack')
         self.wait()
 
-    def update(self):
+    def _update(self):
         LOG.debug('create_stack: stack_name=%s', self.name)
         template_body = open(self.template_path).read()
         try:
@@ -125,6 +125,15 @@ class Stack(object):
                 LOG.exception('Unable to update stack')
         self.wait()
 
+    def update(self):
+        if self.exists():
+            self._update()
+        else:
+            self._create()
+
+    def status(self):
+        return self.exists()
+
     def delete(self):
         LOG.debug('delete_stack: stack_name=%s', self.name)
         try:

-botocore==0.82.0
+botocore==0.94.0
 click==3.3
 PyYAML>=3.11
 mock>=1.0.1

@@ -5,7 +5,7 @@ from setuptools import setup, find_packages
 import os
 
 requires = [
-    'botocore==0.82.0',
+    'botocore==0.94.0',
     'click==3.3',
     'PyYAML>=3.11'
 ]

@@ -56,10 +56,10 @@ class TestStack(unittest.TestCase):
         stack = Stack(mock_context, Config)
         self.assertTrue(stack.exists())
 
-    def test_create(self):
+    def test_update(self):
         mock_context = mock.Mock()
         stack = Stack(mock_context, Config)
-        stack.create()
+        stack.update()
 
     def test_delete(self):
         mock_context = mock.Mock()