lambda + SNS enhancements (#1048)

* updates

- support lambda messages from SNS
- run lambda in docker container

* decode output

* populate timeout

* simplify

* whoops

* skeletons of cloudwatchlogs

* impl filter log streams

* fix logging

* PEP fixes

* PEP fixes

* fix reset

* fix reset

* add new endpoint

* fix region name

* add docker

* try to fix tests

* try to fix travis issue with boto

* fix escaping in urls

* fix environment variables

* fix PEP

* more pep

* switch back to precise

* another fix attempt

* fix typo

* fix lambda invoke

* fix more unittests

* work on getting this to work in new scheme

* fix py2

* fix error

* fix tests when running in server mode

* more lambda fixes

* try running with latest docker

adapted from aiodocker

* switch to docker python client

* pep fixes

* switch to docker volume

* fix unittest

* fix invoke from sns

* fix zip2tar

* add hack impl for get_function with zip

* try fix

* fix for py < 3.6

* add volume refcount

* try to fix travis

* docker test

* fix yaml

* try fix

* update endpoints

* fix

* another attempt

* try again

* fix recursive import

* refactor fix

* revert changes with better fix

* more reverts

* wait for service to come up

* add back detached mode

* sleep and add another exception type

* put this back for logging

* put back with note

* whoops :)

* docker in docker!

* fix invalid url

* hopefully last fix!

* fix lambda regions

* fix protocol

* travis!!!!

* just run lambda test for now

* use one print

* fix escaping

* another attempt

* yet another

* re-enable all tests

* fixes

* fix for py2

* revert change

* fix for py2.7

* fix output ordering

* remove this given there's a new unittest that covers it

* changes based on review

- add skeleton logs test file
- switch to docker image that matches test env
- fix mock_logs import

* add readme entry

moto/sns/models.py

@@ -12,6 +12,8 @@ from moto.compat import OrderedDict
 from moto.core import BaseBackend, BaseModel
 from moto.core.utils import iso_8601_datetime_with_milliseconds
 from moto.sqs import sqs_backends
+from moto.awslambda import lambda_backends
+
 from .exceptions import (
     SNSNotFoundError, DuplicateSnsEndpointError, SnsEndpointDisabled, SNSInvalidParameter
 )
@@ -88,6 +90,11 @@ class Subscription(BaseModel):
         elif self.protocol in ['http', 'https']:
             post_data = self.get_post_data(message, message_id)
             requests.post(self.endpoint, json=post_data)
+        elif self.protocol == 'lambda':
+            # TODO: support bad function name
+            function_name = self.endpoint.split(":")[-1]
+            region = self.arn.split(':')[3]
+            lambda_backends[region].send_message(function_name, message)
 
     def get_post_data(self, message, message_id):
         return {