def disabled_xtest_get_ids(self):
self.assertEqual(
CloudWatchEvents.get_ids(
event_data('event-instance-state.json'),
{'type': 'ec2-instance-state'}),
['i-a2d74f12'])
self.assertEqual(
CloudWatchEvents.get_ids(
{'detail': event_data('event-cloud-trail-run-instances.json')},
{'type': 'cloudtrail', 'events': ['RunInstances']}),
['i-d49cf94c'])
def disabled_xtest_get_ids(self):
self.assertEqual(
CloudWatchEvents.get_ids(event_data('event-instance-state.json'),
{'type': 'ec2-instance-state'}),
['i-a2d74f12'])
self.assertEqual(
CloudWatchEvents.get_ids(
{'detail': event_data('event-cloud-trail-run-instances.json')},
{
'type': 'cloudtrail',
'events': ['RunInstances']
}), ['i-d49cf94c'])
def test_ec2_state(self):
self.assertEqual(
CloudWatchEvents.get_ids(
event_data("event-instance-state.json"), {"type": "ec2-instance-state"}
),
["i-a2d74f12"],
)
def test_get_ids_multiple_events(self):
d = event_data('event-cloud-trail-run-instances.json')
d['eventName'] = 'StartInstances'
self.assertEqual(
CloudWatchEvents.get_ids(
{'detail': d},
{'type': 'cloudtrail', 'events': [
# wrong event name
{'source': 'ec2.amazonaws.com',
'event': 'CreateTags',
'ids': 'requestParameters.resourcesSet.items[].resourceId'},
# wrong event source
{'source': 'ecs.amazonaws.com',
'event': 'StartInstances',
'ids': 'responseElements.instancesSet.items'},
# matches no resource ids
{'source': 'ec2.amazonaws.com',
'event': 'StartInstances',
'ids': 'responseElements.instancesSet2.items[].instanceId'},
# correct
{'source': 'ec2.amazonaws.com',
'event': 'StartInstances',
'ids': 'responseElements.instancesSet.items[].instanceId'},
# we don't fall off the end
{'source': 'ec2.amazonaws.com',
'event': 'StartInstances',
'ids': 'responseElements.instancesSet.items[]'},
]}),
['i-784cdacd', u'i-7b4cdace'])
def test_ec2_state(self):
self.assertEqual(
CloudWatchEvents.get_ids(
event_data("event-instance-state.json"), {"type": "ec2-instance-state"}
),
["i-a2d74f12"],
)
def test_asg_state(self):
self.assertEqual(
CloudWatchEvents.get_ids(
event_data('event-asg-instance-failed.json'),
{'type': 'asg-instance-state',
'events': ['EC2 Instance Launch Unsuccessful']}),
['CustodianTest'])
def test_get_ids(self):
self.assertEqual(
CloudWatchEvents.get_ids(
{'detail': event_data('event-cloud-trail-run-instances.json')},
{
'type': 'cloudtrail',
'events': ['RunInstances']
}), ['i-784cdacd', u'i-7b4cdace'])
def test_get_ids(self):
self.assertEqual(
CloudWatchEvents.get_ids(
{"detail": event_data("event-cloud-trail-run-instances.json")},
{"type": "cloudtrail", "events": ["RunInstances"]},
),
["i-784cdacd", u"i-7b4cdace"],
)
def test_get_ids(self):
self.assertEqual(
CloudWatchEvents.get_ids(
{"detail": event_data("event-cloud-trail-run-instances.json")},
{"type": "cloudtrail", "events": ["RunInstances"]},
),
["i-784cdacd", "i-7b4cdace"],
)
def test_get_ids_sans_with_details_expr(self):
self.assertEqual(
CloudWatchEvents.get_ids(
{'detail': event_data('event-cloud-trail-run-instances.json')},
{'type': 'cloudtrail', 'events': [
{'ids': 'detail.responseElements.instancesSet.items[].instanceId',
'source': 'ec2.amazonaws.com',
'event': 'RunInstances'}]}),
["i-784cdacd", "i-7b4cdace"],
)
def test_get_ids_multiple_events(self):
d = event_data("event-cloud-trail-run-instances.json")
d["eventName"] = "StartInstances"
self.assertEqual(
CloudWatchEvents.get_ids(
{"detail": d},
{
"type":
"cloudtrail",
"events": [
# wrong event name
{
"source":
"ec2.amazonaws.com",
"event":
"CreateTags",
"ids":
"requestParameters.resourcesSet.items[].resourceId",
},
# wrong event source
{
"source": "ecs.amazonaws.com",
"event": "StartInstances",
"ids": "responseElements.instancesSet.items",
},
# matches no resource ids
{
"source":
"ec2.amazonaws.com",
"event":
"StartInstances",
"ids":
"responseElements.instancesSet2.items[].instanceId",
},
# correct
{
"source":
"ec2.amazonaws.com",
"event":
"StartInstances",
"ids":
"responseElements.instancesSet.items[].instanceId",
},
# we don't fall off the end
{
"source": "ec2.amazonaws.com",
"event": "StartInstances",
"ids": "responseElements.instancesSet.items[]",
},
],
},
),
["i-784cdacd", u"i-7b4cdace"],
)
def push(self, event, lambda_ctx):
"""Run policy in push mode against given event.
Lambda automatically generates cloud watch logs, and metrics
for us, albeit with some deficienies, metrics no longer count
against valid resources matches, but against execution.
Fortunately we already have replacements.
TODO: better customization around execution context outputs
TODO: support centralized lambda exec across accounts.
"""
mode = self.data.get('mode', {})
mode_type = mode.get('type')
if mode_type == 'periodic':
return self.poll()
resource_ids = CloudWatchEvents.get_ids(event, mode)
if resource_ids is None:
raise ValueError("Unknown push event mode %s" % self.data)
self.log.info('Found resource ids: %s' % resource_ids)
if not resource_ids:
self.log.warning("Could not find resource ids")
return
resources = self.resource_manager.get_resources(resource_ids)
if 'debug' in event:
self.log.info("Resources %s", resources)
resources = self.resource_manager.filter_resources(resources, event)
if 'debug' in event:
self.log.info("Filtered resources %d" % len(resources))
if not resources:
self.log.info("policy: %s resources: %s no resources matched" %
(self.name, self.resource_type))
return
self.ctx.metrics.put_metric('ResourceCount',
len(resources),
'Count',
Scope="Policy",
buffer=False)
if 'debug' in event:
self.log.info("Invoking actions %s", self.resource_manager.actions)
for action in self.resource_manager.actions:
self.log.info("policy: %s invoking action: %s resources: %d",
self.name, action.name, len(resources))
if isinstance(action, EventAction):
action.process(resources, event)
else:
action.process(resources)
return resources
def test_asg_state(self):
self.assertEqual(
CloudWatchEvents.get_ids(
event_data("event-asg-instance-failed.json"),
{
"type": "asg-instance-state",
"events": ["EC2 Instance Launch Unsuccessful"],
},
),
["CustodianTest"],
)
def push(self, event, lambda_ctx):
"""Run policy in push mode against given event.
Lambda automatically generates cloud watch logs, and metrics
for us, albeit with some deficienies, metrics no longer count
against valid resources matches, but against execution.
Fortunately we already have replacements.
TODO: better customization around execution context outputs
TODO: support centralized lambda exec across accounts.
"""
mode = self.data.get('mode', {})
mode_type = mode.get('type')
if mode_type == 'periodic':
return self.poll()
resource_ids = CloudWatchEvents.get_ids(event, mode)
if resource_ids is None:
raise ValueError("Unknown push event mode %s" % self.data)
self.log.info('Found resource ids: %s' % resource_ids)
if not resource_ids:
self.log.warning("Could not find resource ids")
return
resources = self.resource_manager.get_resources(resource_ids)
if 'debug' in event:
self.log.info("Resources %s", resources)
resources = self.resource_manager.filter_resources(resources, event)
if 'debug' in event:
self.log.info("Filtered resources %d" % len(resources))
if not resources:
self.log.info("policy: %s resources: %s no resources matched" % (
self.name, self.resource_type))
return
self.ctx.metrics.put_metric(
'ResourceCount', len(resources), 'Count', Scope="Policy",
buffer=False)
if 'debug' in event:
self.log.info("Invoking actions %s", self.resource_manager.actions)
for action in self.resource_manager.actions:
self.log.info(
"policy: %s invoking action: %s resources: %d",
self.name, action.name, len(resources))
if isinstance(action, EventAction):
action.process(resources, event)
else:
action.process(resources)
return resources
def test_asg_state(self):
self.assertEqual(
CloudWatchEvents.get_ids(
event_data("event-asg-instance-failed.json"),
{
"type": "asg-instance-state",
"events": ["EC2 Instance Launch Unsuccessful"],
},
),
["CustodianTest"],
)
def test_custom_event(self):
d = {'detail': event_data('event-cloud-trail-run-instances.json')}
d['detail']['eventName'] = 'StartInstances'
self.assertEqual(
CloudWatchEvents.get_ids(
d,
{'type': 'cloudtrail', 'events': [{
'event': 'StartInstances',
'ids': 'responseElements.instancesSet.items[].instanceId',
'source': 'ec2.amazonaws.com'}]}),
['i-784cdacd', u'i-7b4cdace'])
def resolve_resources(self, event):
mode = self.policy.data.get('mode', {})
resource_ids = CloudWatchEvents.get_ids(event, mode)
if resource_ids is None:
raise ValueError("Unknown push event mode %s" % self.data)
self.policy.log.info('Found resource ids: %s' % resource_ids)
if not resource_ids:
self.policy.log.warning("Could not find resource ids")
return []
resources = self.policy.resource_manager.get_resources(resource_ids)
if 'debug' in event:
self.policy.log.info("Resources %s", resources)
return resources
def resolve_resources(self, event):
mode = self.policy.data.get('mode', {})
resource_ids = CloudWatchEvents.get_ids(event, mode)
if resource_ids is None:
raise ValueError("Unknown push event mode %s" % self.data)
self.policy.log.info('Found resource ids: %s' % resource_ids)
if not resource_ids:
self.policy.log.warning("Could not find resource ids")
return []
resources = self.policy.resource_manager.get_resources(resource_ids)
if 'debug' in event:
self.policy.log.info("Resources %s", resources)
return resources
def resolve_resources(self, event):
self.assume_member(event)
mode = self.policy.data.get('mode', {})
resource_ids = CloudWatchEvents.get_ids(event, mode)
if resource_ids is None:
raise ValueError("Unknown push event mode %s", self.data)
self.policy.log.info('Found resource ids: %s', resource_ids)
# Handle multi-resource type events, like ec2 CreateTags
resource_ids = self.policy.resource_manager.match_ids(resource_ids)
if not resource_ids:
self.policy.log.warning("Could not find resource ids")
return []
resources = self.policy.resource_manager.get_resources(resource_ids)
if 'debug' in event:
self.policy.log.info("Resources %s", resources)
return resources
def resolve_resources(self, event):
self.assume_member(event)
mode = self.policy.data.get('mode', {})
resource_ids = CloudWatchEvents.get_ids(event, mode)
if resource_ids is None:
raise ValueError("Unknown push event mode %s", self.data)
self.policy.log.info('Found resource ids: %s', resource_ids)
# Handle multi-resource type events, like ec2 CreateTags
resource_ids = self.policy.resource_manager.match_ids(resource_ids)
if not resource_ids:
self.policy.log.warning("Could not find resource ids")
return []
resources = self.policy.resource_manager.get_resources(resource_ids)
if 'debug' in event:
self.policy.log.info("Resources %s", resources)
return resources
def test_get_ids_multiple_events(self):
d = event_data("event-cloud-trail-run-instances.json")
d["eventName"] = "StartInstances"
self.assertEqual(
CloudWatchEvents.get_ids(
{"detail": d},
{
"type": "cloudtrail",
"events": [
# wrong event name
{
"source": "ec2.amazonaws.com",
"event": "CreateTags",
"ids": "requestParameters.resourcesSet.items[].resourceId",
},
# wrong event source
{
"source": "ecs.amazonaws.com",
"event": "StartInstances",
"ids": "responseElements.instancesSet.items",
},
# matches no resource ids
{
"source": "ec2.amazonaws.com",
"event": "StartInstances",
"ids": "responseElements.instancesSet2.items[].instanceId",
},
# correct
{
"source": "ec2.amazonaws.com",
"event": "StartInstances",
"ids": "responseElements.instancesSet.items[].instanceId",
},
# we don't fall off the end
{
"source": "ec2.amazonaws.com",
"event": "StartInstances",
"ids": "responseElements.instancesSet.items[]",
},
],
},
),
["i-784cdacd", u"i-7b4cdace"],
)
def test_custom_event(self):
d = {"detail": event_data("event-cloud-trail-run-instances.json")}
d["detail"]["eventName"] = "StartInstances"
self.assertEqual(
CloudWatchEvents.get_ids(
d,
{
"type": "cloudtrail",
"events": [
{
"event": "StartInstances",
"ids": "responseElements.instancesSet.items[].instanceId",
"source": "ec2.amazonaws.com",
}
],
},
),
["i-784cdacd", u"i-7b4cdace"],
)
def test_custom_event(self):
d = {"detail": event_data("event-cloud-trail-run-instances.json")}
d["detail"]["eventName"] = "StartInstances"
self.assertEqual(
CloudWatchEvents.get_ids(
d,
{
"type": "cloudtrail",
"events": [
{
"event": "StartInstances",
"ids": "responseElements.instancesSet.items[].instanceId",
"source": "ec2.amazonaws.com",
}
],
},
),
["i-784cdacd", u"i-7b4cdace"],
)
def run(self, event, lambda_context):
"""Run policy in push mode against given event.
Lambda automatically generates cloud watch logs, and metrics
for us, albeit with some deficienies, metrics no longer count
against valid resources matches, but against execution.
If metrics execution option is enabled, custodian will generate
metrics per normal.
"""
from c7n.actions import EventAction
mode = self.policy.data.get('mode', {})
if not bool(mode.get("log", True)):
root = logging.getLogger()
map(root.removeHandler, root.handlers[:])
root.handlers = [logging.NullHandler()]
member_id = self.get_member_account_id(event)
region = self.get_member_region(event)
resource_ids = CloudWatchEvents.get_ids(event, mode)
resources = self.resolve_resources(event)
if not resources:
return resources
resources = self.policy.resource_manager.filter_resources(
resources, event)
if 'debug' in event:
self.policy.log.info("Filtered resources %d" % len(resources))
if not resources:
self.policy.log.info(
"policy: %s resources: %s no resources matched" %
(self.policy.name, self.policy.resource_type))
self.policy.log.info(
"Compliant resource matched: Rule: %s: Account: %s region: %s type: %s resource: %s"
% (self.policy.name, member_id, region,
self.policy.resource_type, resource_ids[0]))
return
with self.policy.ctx:
self.policy.ctx.metrics.put_metric('ResourceCount',
len(resources),
'Count',
Scope="Policy",
buffer=False)
if 'debug' in event:
self.policy.log.info("Invoking actions %s",
self.policy.resource_manager.actions)
self.policy._write_file('resources.json',
utils.dumps(resources, indent=2))
for action in self.policy.resource_manager.actions:
self.policy.log.info(
"policy: %s invoking action: %s resources: %d",
self.policy.name, action.name, len(resources))
if isinstance(action, EventAction):
results = action.process(resources, event)
else:
results = action.process(resources)
self.policy._write_file("action-%s" % action.name,
utils.dumps(results))
return resources
def test_ec2_state(self):
self.assertEqual(
CloudWatchEvents.get_ids(
event_data('event-instance-state.json'),
{'type': 'ec2-instance-state'}),
['i-a2d74f12'])
def test_get_ids(self):
self.assertEqual(
CloudWatchEvents.get_ids(
{'detail': event_data('event-cloud-trail-run-instances.json')},
{'type': 'cloudtrail', 'events': ['RunInstances']}),
['i-784cdacd', u'i-7b4cdace'])
