├── .gitignore ├── .travis.yml ├── LICENSE ├── README.md ├── build.py ├── setup.cfg └── src ├── main └── python │ └── cloudwatchlogs_logging │ └── __init__.py └── unittest └── python └── loghandler_tests.py /.gitignore: -------------------------------------------------------------------------------- 1 | # Byte-compiled / optimized / DLL files 2 | __pycache__/ 3 | *.py[cod] 4 | 5 | # C extensions 6 | *.so 7 | 8 | # Distribution / packaging 9 | .Python 10 | env/ 11 | build/ 12 | develop-eggs/ 13 | dist/ 14 | downloads/ 15 | eggs/ 16 | lib/ 17 | lib64/ 18 | parts/ 19 | sdist/ 20 | var/ 21 | *.egg-info/ 22 | .installed.cfg 23 | *.egg 24 | 25 | # PyInstaller 26 | # Usually these files are written by a python script from a template 27 | # before PyInstaller builds the exe, so as to inject date/other infos into it. 28 | *.manifest 29 | *.spec 30 | 31 | # Installer logs 32 | pip-log.txt 33 | pip-delete-this-directory.txt 34 | 35 | # Unit test / coverage reports 36 | htmlcov/ 37 | .tox/ 38 | .coverage 39 | .cache 40 | nosetests.xml 41 | coverage.xml 42 | 43 | # Translations 44 | *.mo 45 | *.pot 46 | 47 | # Django stuff: 48 | *.log 49 | 50 | # Sphinx documentation 51 | docs/_build/ 52 | 53 | # PyBuilder 54 | target/ 55 | 56 | tags 57 | 58 | .*.swp 59 | 60 | # virtualenv 61 | venv 62 | -------------------------------------------------------------------------------- /.travis.yml: -------------------------------------------------------------------------------- 1 | language: python 2 | python: 3 | - "2.6" 4 | - "2.7" 5 | - "3.4" 6 | - "3.5" 7 | - "3.6" 8 | install: 9 | - pip install pybuilder 10 | - pip install coveralls 11 | - pyb install_dependencies 12 | script: "pyb" 13 | after_success: 14 | - coveralls --verbose 15 | -------------------------------------------------------------------------------- /LICENSE: -------------------------------------------------------------------------------- 1 | Apache License 2 | Version 2.0, January 2004 3 | http://www.apache.org/licenses/ 4 | 5 | TERMS AND CONDITIONS FOR USE, REPRODUCTION, AND DISTRIBUTION 6 | 7 | 1. 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5 | # you may not use this file except in compliance with the License. 6 | # You may obtain a copy of the License at 7 | # 8 | # http://www.apache.org/licenses/LICENSE-2.0 9 | # 10 | # Unless required by applicable law or agreed to in writing, software 11 | # distributed under the License is distributed on an "AS IS" BASIS, 12 | # WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 13 | # See the License for the specific language governing permissions and 14 | # limitations under the License. 15 | 16 | from pybuilder.core import use_plugin, init, Author 17 | 18 | use_plugin('python.core') 19 | use_plugin('python.install_dependencies') 20 | use_plugin('python.distutils') 21 | use_plugin('python.flake8') 22 | use_plugin('python.unittest') 23 | use_plugin('python.coverage') 24 | 25 | use_plugin('copy_resources') 26 | 27 | default_task = ['analyze', 'publish'] 28 | 29 | name = 'python-cloudwatchlogs-logging' 30 | version = '0.0.4' 31 | summary = 'Handler for easy logging to AWS CloudWatchLogs.' 32 | description = """ 33 | Handler for easy logging to AWS CloudWatchLogs. 34 | """ 35 | authors = [Author('Arne Hilmann', 'arne.hilmann@gmail.com')] 36 | url = 'https://github.com/ImmobilienScout24/python-cloudwatchlogs-logging' 37 | license = 'Apache License 2.0' 38 | 39 | 40 | @init 41 | def set_properties(project): 42 | project.set_property("verbose", True) 43 | 44 | project.depends_on("docopt") 45 | project.depends_on("boto") 46 | 47 | project.build_depends_on("mock") 48 | 49 | project.set_property("flake8_include_test_sources", True) 50 | project.set_property('coverage_break_build', False) 51 | 52 | project.set_property("install_dependencies_upgrade", True) 53 | 54 | project.set_property('copy_resources_target', '$dir_dist') 55 | project.get_property('copy_resources_glob').append('setup.cfg') 56 | project.set_property('dir_dist_scripts', 'scripts') 57 | 58 | project.get_property('distutils_commands').append('bdist_egg') 59 | 60 | project.set_property('distutils_classifiers', [ 61 | 'Development Status :: 2 - Pre-Alpha', 62 | 'Environment :: Console', 63 | 'Intended Audience :: Developers', 64 | 'Intended Audience :: System Administrators', 65 | 'Programming Language :: Python', 66 | 'Topic :: System :: Networking', 67 | 'Topic :: System :: Software Distribution', 68 | 'Topic :: System :: Systems Administration' 69 | ]) 70 | 71 | 72 | @init(environments='teamcity') 73 | def set_properties_for_teamcity_builds(project): 74 | import os 75 | project.version = '%s-%s' % ( 76 | project.version, os.environ.get('BUILD_NUMBER', 0)) 77 | project.default_task = ['install_build_dependencies', 'publish'] 78 | project.set_property( 79 | 'install_dependencies_index_url', os.environ.get('PYPIPROXY_URL')) 80 | project.set_property('install_dependencies_use_mirrors', False) 81 | project.set_property('teamcity_output', True) 82 | -------------------------------------------------------------------------------- /setup.cfg: -------------------------------------------------------------------------------- 1 | [bdist_rpm] 2 | requires = python >= 2.6 python-boto 3 | -------------------------------------------------------------------------------- /src/main/python/cloudwatchlogs_logging/__init__.py: -------------------------------------------------------------------------------- 1 | # CloudWatchLogs Logging 2 | # Copyright 2015 Immobilien Scout GmbH 3 | # 4 | # Licensed under the Apache License, Version 2.0 (the "License"); 5 | # you may not use this file except in compliance with the License. 6 | # You may obtain a copy of the License at 7 | # 8 | # http://www.apache.org/licenses/LICENSE-2.0 9 | # 10 | # Unless required by applicable law or agreed to in writing, software 11 | # distributed under the License is distributed on an "AS IS" BASIS, 12 | # WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 13 | # See the License for the specific language governing permissions and 14 | # limitations under the License. 15 | 16 | import json 17 | import logging 18 | 19 | import boto.logs 20 | from boto.logs.exceptions import (DataAlreadyAcceptedException, 21 | InvalidSequenceTokenException, 22 | ResourceAlreadyExistsException) 23 | 24 | 25 | class CloudWatchLogsHandler(logging.StreamHandler): 26 | """ 27 | Logging Handler writing to the AWS CloudWatch Logs Service, directly 28 | 29 | Needed Information: 30 | region (e.g. "eu-central-1") 31 | log_group_name 32 | log_stream_name 33 | 34 | Dependencies: 35 | boto: python library for the AWS API, see 36 | http://docs.pythonboto.org/en/latest/getting_started.html#installing-boto 37 | boto credentials, see 38 | http://docs.pythonboto.org/en/latest/getting_started.html#configuring-boto-credentials) 39 | 40 | Typical Usage: 41 | import logging 42 | from cloudwatchlogs_logging import CloudWatchLogsHandler 43 | 44 | cwl_handler = CloudWatchLogsHandler(AWS_REGION, GROUP_NAME, STREAM_NAME) 45 | logger = logging.getLogger(LOGGER_NAME) 46 | logger.addHandler(cwl_handler) 47 | logger.warn("Tadahhh") 48 | """ 49 | def __init__(self, region, log_group_name, log_stream_name, level=logging.INFO): 50 | logging.StreamHandler.__init__(self) 51 | self.setLevel(level) 52 | self.region = region 53 | self.log_group_name = log_group_name 54 | self.log_stream_name = log_stream_name 55 | self.connection = None 56 | self.sequence_token = None 57 | 58 | def create_group_and_stream(self, log_group_name, log_stream_name): 59 | try: 60 | self.connection.create_log_group(log_group_name) 61 | except ResourceAlreadyExistsException: 62 | pass 63 | try: 64 | self.connection.create_log_stream(log_group_name, log_stream_name) 65 | except ResourceAlreadyExistsException: 66 | pass 67 | 68 | def _lazy_connect(self): 69 | if self.connection: 70 | return 71 | self.connection = boto.logs.connect_to_region(self.region) 72 | self.create_group_and_stream(self.log_group_name, self.log_stream_name) 73 | 74 | def _put_message(self, message, timestamp): 75 | self._lazy_connect() 76 | event = {"message": message, "timestamp": timestamp} 77 | result = self.connection.put_log_events( 78 | self.log_group_name, 79 | self.log_stream_name, 80 | [event], 81 | self.sequence_token) 82 | self.sequence_token = result.get("nextSequenceToken", None) 83 | 84 | def put_message(self, message, timestamp): 85 | try: 86 | self._put_message(message, timestamp) 87 | except (DataAlreadyAcceptedException, InvalidSequenceTokenException) as exc: 88 | if exc.status != 400: 89 | raise 90 | next_sequence_token = exc.body.get("expectedSequenceToken", None) 91 | if next_sequence_token: 92 | self.sequence_token = next_sequence_token 93 | self._put_message(message, timestamp) 94 | else: 95 | raise 96 | 97 | def emit(self, record): 98 | timestamp = int(record.created * 1000) 99 | record_dict = vars(record) 100 | for key_to_del in "threadName thread process processName args lineno asctime relativeCreated msecs".split(): 101 | if key_to_del in record_dict: 102 | del record_dict[key_to_del] 103 | try: 104 | message = json.dumps(record_dict) 105 | except Exception: 106 | message = json.dumps(str(record_dict)) 107 | self.put_message(message, timestamp) 108 | -------------------------------------------------------------------------------- /src/unittest/python/loghandler_tests.py: -------------------------------------------------------------------------------- 1 | # CloudWatchLogs Logging 2 | # Copyright 2015 Immobilien Scout GmbH 3 | # 4 | # Licensed under the Apache License, Version 2.0 (the "License"); 5 | # you may not use this file except in compliance with the License. 6 | # You may obtain a copy of the License at 7 | # 8 | # http://www.apache.org/licenses/LICENSE-2.0 9 | # 10 | # Unless required by applicable law or agreed to in writing, software 11 | # distributed under the License is distributed on an "AS IS" BASIS, 12 | # WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 13 | # See the License for the specific language governing permissions and 14 | # limitations under the License. 15 | 16 | import logging 17 | import boto.logs.exceptions 18 | import unittest 19 | from mock import patch 20 | from cloudwatchlogs_logging import CloudWatchLogsHandler 21 | 22 | 23 | class CloudWatchLogsHandlerTest(unittest.TestCase): 24 | 25 | def setUp(self): 26 | self.boto_mock = patch("cloudwatchlogs_logging.boto").start() 27 | self.connection = self.boto_mock.logs.connect_to_region.return_value 28 | self.logger = logging.getLogger("Test") 29 | self.logger.setLevel(logging.WARN) 30 | 31 | def myAssertIn(self, a, b): 32 | self.assertTrue(a in b) 33 | 34 | def test_cloudwatch_logging(self): 35 | cloudwatch_handler = CloudWatchLogsHandler("foo-region", "foo-group", "test") 36 | self.logger.addHandler(cloudwatch_handler) 37 | 38 | self.logger.debug("aha") 39 | self.logger.info("aha") 40 | self.assertFalse(self.connection.put_log_events.called) 41 | 42 | self.logger.warn("aha") 43 | 44 | self.connection.create_log_group.assert_called_with("foo-group") 45 | self.connection.create_log_stream.assert_called_with("foo-group", "test") 46 | call_args = self.connection.put_log_events.call_args[0] 47 | self.assertEqual("foo-group", call_args[0]) 48 | self.assertEqual("test", call_args[1]) 49 | log_event = call_args[2][0] 50 | self.myAssertIn("timestamp", log_event) 51 | self.myAssertIn("message", log_event) 52 | self.myAssertIn("WARNING", log_event["message"]) 53 | self.myAssertIn("aha", log_event["message"]) 54 | 55 | def test_cloudwatch_logging_exception_logging(self): 56 | cloudwatch_handler = CloudWatchLogsHandler("foo-region", "foo-group", "test") 57 | self.logger.addHandler(cloudwatch_handler) 58 | 59 | try: 60 | 1 / 0 61 | except Exception: 62 | self.logger.exception("Cannot divide by zero:") 63 | 64 | def test_log_group_already_exists(self): 65 | e = boto.logs.exceptions.ResourceAlreadyExistsException(400, "binschonda") 66 | self.connection.create_log_group.side_effect = e 67 | self.connection.create_log_stream.side_effect = e 68 | CloudWatchLogsHandler("foo-region", "foo-group", "test") 69 | 70 | def test_response_with_invalid_sequence_token(self): 71 | e = boto.logs.exceptions.InvalidSequenceTokenException(400, "foo") 72 | e.body = {"expectedSequenceToken": "correct_token"} 73 | self.connection.put_log_events.side_effect = e 74 | 75 | handler = CloudWatchLogsHandler("foo-region", "foo-group", "test") 76 | self.assertRaises(boto.logs.exceptions.InvalidSequenceTokenException, 77 | handler.put_message, "message", "timestamp") 78 | 79 | def test_invalid_response(self): 80 | e = boto.logs.exceptions.InvalidSequenceTokenException(500, "completelybroken") 81 | self.connection.put_log_events.side_effect = e 82 | 83 | handler = CloudWatchLogsHandler("foo-region", "foo-group", "test") 84 | self.assertRaises(boto.logs.exceptions.InvalidSequenceTokenException, 85 | handler.put_message, "message", "timestamp") 86 | 87 | def test_response_with_missing_sequence_token(self): 88 | e = boto.logs.exceptions.InvalidSequenceTokenException(400, "foo") 89 | e.body = {} 90 | self.connection.put_log_events.side_effect = e 91 | 92 | handler = CloudWatchLogsHandler("foo-region", "foo-group", "test") 93 | self.assertRaises(boto.logs.exceptions.InvalidSequenceTokenException, 94 | handler.put_message, "message", "timestamp") 95 | --------------------------------------------------------------------------------