├── raven_sqs_proxy
    ├── __init__.py
    ├── tests
    │   ├── __init__.py
    │   ├── conftest.py
    │   └── test_sqsproxy.py
    ├── __about__.py
    └── sqsproxy.py
├── tox.ini
├── .gitignore
├── .travis.yml
├── setup.cfg
├── setup.py
├── README.md
└── LICENSE.txt


/raven_sqs_proxy/__init__.py:
--------------------------------------------------------------------------------
1 | 


--------------------------------------------------------------------------------
/raven_sqs_proxy/tests/__init__.py:
--------------------------------------------------------------------------------
1 | 


--------------------------------------------------------------------------------
/tox.ini:
--------------------------------------------------------------------------------
1 | [tox]
2 | envlist = py27,py36
3 | 
4 | [testenv]
5 | deps=
6 |     pytest
7 |     moto
8 | commands=pytest
9 | 


--------------------------------------------------------------------------------
/.gitignore:
--------------------------------------------------------------------------------
 1 | .idea/
 2 | venv/
 3 | venv
 4 | 
 5 | *.pyc
 6 | 
 7 | *.egg-info/
 8 | 
 9 | __pycache__/
10 | .cache/
11 | 
12 | build/
13 | dist/
14 | 
15 | 


--------------------------------------------------------------------------------
/.travis.yml:
--------------------------------------------------------------------------------
 1 | language: python
 2 | python:
 3 |   - "2.7"
 4 |   - "3.5"
 5 |   - "3.6"
 6 | 
 7 | install:
 8 | -   pip install tox-travis
 9 | 
10 | script:
11 | -   tox
12 | 


--------------------------------------------------------------------------------
/setup.cfg:
--------------------------------------------------------------------------------
 1 | [metadata]
 2 | description-file = README.md
 3 | 
 4 | [wheel]
 5 | universal = 1
 6 | 
 7 | [egg_info]
 8 | tag_build =
 9 | tag_date = 0
10 | tag_svn_revision = 0
11 | 


--------------------------------------------------------------------------------
/raven_sqs_proxy/__about__.py:
--------------------------------------------------------------------------------
 1 | from __future__ import absolute_import, division, print_function
 2 | 
 3 | __all__ = [
 4 |     "__title__", "__summary__", "__uri__", "__version__", "__author__",
 5 |     "__email__", "__license__", "__copyright__",
 6 | ]
 7 | 
 8 | __title__ = "raven-sqs-proxy"
 9 | __summary__ = ("SQS proxy to Sentry.")
10 | __uri__ = "https://github.com/Netflix-Skunkworks/raven-sqs-proxy"
11 | 
12 | __version__ = "0.1.0"
13 | 
14 | __author__ = "The developers"
15 | __email__ = "oss@netflix.com"
16 | 
17 | __license__ = "Apache License, Version 2.0"
18 | __copyright__ = "Copyright 2017 {0}".format(__author__)
19 | 


--------------------------------------------------------------------------------
/raven_sqs_proxy/tests/conftest.py:
--------------------------------------------------------------------------------
 1 | """
 2 | .. module: sqsproxy
 3 |     :platform: Unix
 4 |     :copyright: (c) 2017 by Netflix Inc., see AUTHORS for more
 5 |     :license: Apache, see LICENSE for more details.
 6 | .. moduleauthor:: Mike Grima <mikegrima> @THISisPLACEHLDR
 7 | """
 8 | import pytest
 9 | from moto.sqs import mock_sqs
10 | import boto3
11 | 
12 | 
13 | @pytest.fixture(scope='function')
14 | def sqs():
15 |     with mock_sqs():
16 |         yield boto3.client('sqs', region_name="us-east-1")
17 | 
18 | 
19 | @pytest.fixture(scope='function')
20 | def sqs_queue(sqs):
21 |     sqs.create_queue(QueueName="test-queue")
22 | 
23 |     return sqs
24 | 
25 | 
26 | @pytest.fixture(scope='function')
27 | def url(sqs_queue):
28 |     return sqs_queue.get_queue_url(QueueName="test-queue",
29 |                                    QueueOwnerAWSAccountId="123456789012")["QueueUrl"]
30 | 
31 | 
32 | @pytest.fixture(scope="function")
33 | def sqs_message(sqs_queue, url):
34 |     sqs_queue.send_message(QueueUrl=url, MessageBody="hello")
35 | 
36 |     return sqs_queue.receive_message(QueueUrl=url)
37 | 
38 | 
39 | class MockSentry:
40 |     def __init__(self, status_code):
41 |         self.status_code = status_code
42 | 
43 |     def status_code(self):
44 |         return self.status_code
45 | 
46 | 
47 | def mock_sentry(*args, **kwargs):
48 |     if "fail" in args[0]:
49 |         return MockSentry(404)
50 | 
51 |     return MockSentry(200)
52 | 


--------------------------------------------------------------------------------
/setup.py:
--------------------------------------------------------------------------------
 1 | """
 2 | Raven SQS Proxy
 3 | ===================
 4 | 
 5 | A simple SQS poller for proxying Sentry messages in SQS to Sentry
 6 | """
 7 | import sys
 8 | import os.path
 9 | 
10 | from setuptools import setup, find_packages
11 | 
12 | ROOT = os.path.realpath(os.path.join(os.path.dirname(__file__)))
13 | sys.path.insert(0, ROOT)
14 | 
15 | about = {}
16 | with open(os.path.join(ROOT, "raven_sqs_proxy", "__about__.py")) as f:
17 |     exec(f.read(), about)
18 | 
19 | 
20 | install_requires = [
21 |     'boto3',
22 |     'requests',
23 |     'click',
24 |     'click_log',
25 |     'retrying'
26 | ]
27 | 
28 | tests_require = [
29 |     'pytest',
30 |     'moto'
31 | ]
32 | 
33 | setup(
34 |     name=about["__title__"],
35 |     version=about["__version__"],
36 |     author=about["__author__"],
37 |     author_email=about["__email__"],
38 |     url=about["__uri__"],
39 |     description=about["__summary__"],
40 |     long_description='See README.md',
41 |     packages=find_packages(),
42 |     include_package_data=True,
43 |     zip_safe=False,
44 |     install_requires=install_requires,
45 |     extras_require={
46 |         'tests': tests_require
47 |     },
48 |     keywords=['aws', 'sentry', 'raven', 'sqs', 'proxy'],
49 |     entry_points={
50 |         "console_scripts": [
51 |             "sqsproxy = raven_sqs_proxy.sqsproxy:cli"
52 |         ]
53 |     },
54 |     classifiers=[
55 |         "Programming Language :: Python",
56 |         'Programming Language :: Python :: 2',
57 |         'Programming Language :: Python :: 2.7',
58 |         'Programming Language :: Python :: 3',
59 |         'Programming Language :: Python :: 3.5',
60 |         'Programming Language :: Python :: 3.6',
61 |     ],
62 |     license="Apache 2.0",
63 |     maintainer="Mike Grima <GH: mikegrima>"
64 | )
65 | 


--------------------------------------------------------------------------------
/raven_sqs_proxy/tests/test_sqsproxy.py:
--------------------------------------------------------------------------------
 1 | """
 2 | .. module: sqsproxy
 3 |     :platform: Unix
 4 |     :copyright: (c) 2017 by Netflix Inc., see AUTHORS for more
 5 |     :license: Apache, see LICENSE for more details.
 6 | .. moduleauthor:: Mike Grima <mikegrima> @THISisPLACEHLDR
 7 | """
 8 | import pytest
 9 | from botocore.exceptions import ClientError
10 | from retrying import RetryError
11 | import mock
12 | 
13 | from raven_sqs_proxy.tests.conftest import mock_sentry
14 | 
15 | 
16 | def test_validate_region():
17 |     from raven_sqs_proxy.sqsproxy import validate_region
18 |     import click
19 | 
20 |     assert validate_region(None, None, "us-east-1") == "us-east-1"
21 | 
22 |     with pytest.raises(click.BadParameter) as _:
23 |         validate_region(None, None, "LOL")
24 | 
25 | 
26 | def test_retry_if_client_error():
27 |     from raven_sqs_proxy.sqsproxy import retry_if_client_error
28 |     assert not retry_if_client_error(Exception())
29 |     assert retry_if_client_error(ClientError({"Error": {}}, "SendMessage"))
30 | 
31 | 
32 | def test_receive_messages(sqs_queue, url):
33 |     import raven_sqs_proxy
34 |     from raven_sqs_proxy.sqsproxy import receive_messages
35 |     raven_sqs_proxy.sqsproxy.SQS_WAIT_TIME_SECONDS = 0
36 | 
37 |     result = receive_messages(sqs_queue, url)
38 |     assert not result["Messages"]
39 | 
40 |     with pytest.raises(RetryError) as _:
41 |         receive_messages(sqs_queue, "https://LOLNO")
42 | 
43 | 
44 | def test_delete_messages(sqs_queue, url, sqs_message):
45 |     from raven_sqs_proxy.sqsproxy import delete_message
46 | 
47 |     delete_message(sqs_queue, url, sqs_message["Messages"][0]["ReceiptHandle"])
48 | 
49 |     with pytest.raises(RetryError) as _:
50 |         delete_message(sqs_queue, "https://LOLNO", sqs_message["Messages"][0]["ReceiptHandle"])
51 | 
52 | 
53 | @mock.patch("requests.post", side_effect=mock_sentry)
54 | def test_send_to_sentry(mock_post):
55 |     from raven_sqs_proxy.sqsproxy import send_to_sentry
56 | 
57 |     headers = {}
58 |     data = {"LOL": "HAY"}
59 | 
60 |     send_to_sentry("pass", headers, data)
61 | 
62 |     with pytest.raises(RetryError) as _:
63 |         send_to_sentry("fail", headers, data)
64 | 
65 | 


--------------------------------------------------------------------------------
/README.md:
--------------------------------------------------------------------------------
 1 | # Sentry/Raven SQS Proxy
 2 | 
 3 | [![Build Status](https://travis-ci.org/Netflix-Skunkworks/raven-sqs-proxy.svg?branch=master)](https://travis-ci.org/Netflix-Skunkworks/raven-sqs-proxy)
 4 | [![PyPI version](https://badge.fury.io/py/raven-sqs-proxy.svg)](https://badge.fury.io/py/raven-sqs-proxy)
 5 | 
 6 | ## About
 7 | This is a very simple Python project that polls SQS for Sentry messages and then proxies them over to a Sentry instance.
 8 | 
 9 | This is based on the implementation of the Sentry.IO `SQSTransport` as implemented in [this PR to raven-python](https://github.com/getsentry/raven-python/pull/1095).
10 | 
11 | ## How to use:
12 | The first part in using this is to make use of the Sentry `SQSTransport` implemented in the [getsentry/raven-python](https://github.com/getsentry/raven-python) 
13 | project.
14 | 
15 | This will have an instance, lambda function, or anything with AWS credentials to an SQS queue to forward all Sentry messages to SQS. This project will then
16 | listen for those messages on the queue and simply proxy them over to Sentry for storage.
17 | 
18 | ## Required Items:
19 | For sending to the SQS queue, you will need the following:
20 | 1. An SQS queue
21 | 1. An IAM role with the following permissions to the SQS queue in question:
22 |     ```
23 |     sqs:GetQueueUrl
24 |     sqs:SendMessage
25 |     ```
26 | 1. A Sentry DSN
27 | 1. Python code that creates a Sentry client that looks similar to this:
28 |     ```
29 |     from raven.base import Client
30 |     from raven.transport.sqs import SQSTransport
31 |     
32 |     # SQS details that are required are:
33 |     # 1. `sqs_region`
34 |     # 2. `sqs_account` This is the 12 digit AWS account number
35 |     # 3. `sqs_name` 
36 |     
37 |     sentry_client = Client(dsn="https://some-sentry-dsn?sqs_region=REGION&sqs_account=ACCOUNT_NUMsqs_name=QUEUE_NAME",
38 |                            transport=SQSTransport)
39 |     
40 |     ```
41 | 
42 | For retrieving messages:
43 | 1. Access to the SQS queue the source app above is sending to. This will need the following permissions against the queue:
44 |     ```
45 |     sqs:GetQueueUrl
46 |     sqs:SendMessage
47 |     sqs:DeleteMessage
48 |     ```
49 | 1. Network-level access to the Sentry instance
50 | 
51 | 
52 | ## Installation:
53 | 1. Make and activate a Python virtual environment
54 | 1. Run `pip install raven_sqs_proxy` to install this
55 | 1. Hopefully you are running with on-instance AWS IAM role credentials. Otherwise, you will
56 |    need to export them into your environment.
57 | 1. Run `sqsproxy --queue-name NAME-OF-QUEUE --queue-region QUEUE-REGION --queue-account AWS_ACCOUNT_ID_OF_QUEUE`
58 | 
59 | 
60 | That's it.
61 | 


--------------------------------------------------------------------------------
/raven_sqs_proxy/sqsproxy.py:
--------------------------------------------------------------------------------
  1 | """
  2 | .. module: sqsproxy
  3 |     :platform: Unix
  4 |     :copyright: (c) 2017 by Netflix Inc., see AUTHORS for more
  5 |     :license: Apache, see LICENSE for more details.
  6 | .. moduleauthor:: Mike Grima <mikegrima> @THISisPLACEHLDR
  7 | """
  8 | import boto3
  9 | import click
 10 | import requests
 11 | import base64
 12 | import click_log
 13 | import json
 14 | import logging
 15 | import sys
 16 | import signal
 17 | 
 18 | from retrying import retry, RetryError
 19 | from botocore.exceptions import ClientError
 20 | 
 21 | logger = logging.getLogger(__name__)
 22 | click_log.basic_config(logger)
 23 | 
 24 | 
 25 | SQS_WAIT_TIME_SECONDS = 20
 26 | 
 27 | 
 28 | # For graceful exits...
 29 | def handle_exit(signal, frame):
 30 |     logger.info("[!] Received signal to exit... Exiting...")
 31 |     sys.exit(0)
 32 | 
 33 | 
 34 | signal.signal(signal.SIGINT, handle_exit)
 35 | 
 36 | 
 37 | def validate_region(ctx, param, value):
 38 |     """Validate that a proper AWS region was passed in"""
 39 |     all_regions = boto3.session.Session().get_available_regions("sqs")
 40 | 
 41 |     if value not in all_regions:
 42 |         raise click.BadParameter("Invalid region passed in. Must be one of: {}".format(", ".join(all_regions)))
 43 | 
 44 |     return value
 45 | 
 46 | 
 47 | def retry_if_client_error(exception):
 48 |     """Retry function to detect if the exception is a boto client error"""
 49 |     return isinstance(exception, ClientError)
 50 | 
 51 | 
 52 | @retry(retry_on_exception=retry_if_client_error, stop_max_attempt_number=5, wait_fixed=3000, wrap_exception=True)
 53 | def receive_messages(client, url):
 54 |     """
 55 |     Listens to the SQS queue and retrieves messages.
 56 |     :param client:
 57 |     :param url:
 58 |     :return:
 59 |     """
 60 |     messages = client.receive_message(QueueUrl=url, WaitTimeSeconds=SQS_WAIT_TIME_SECONDS)
 61 | 
 62 |     if not messages.get("Messages"):
 63 |         logger.debug("[><] No messages received.  Listening for another {} seconds...".format(SQS_WAIT_TIME_SECONDS))
 64 |         messages["Messages"] = []
 65 | 
 66 |     return messages
 67 | 
 68 | 
 69 | @retry(retry_on_exception=retry_if_client_error, stop_max_attempt_number=5, wait_fixed=3000, wrap_exception=True)
 70 | def delete_message(client, url, receipt_handle):
 71 |     """Deletes message from SQS because it was successfully processed"""
 72 |     client.delete_message(QueueUrl=url, ReceiptHandle=receipt_handle)
 73 | 
 74 | 
 75 | @retry(stop_max_attempt_number=5, wait_fixed=3000, wrap_exception=True)
 76 | def send_to_sentry(sentry_url, headers, data):
 77 |     """
 78 |     Send the message over to Sentry.
 79 |     :param sentry_url: This is the URL of the Sentry server
 80 |     :param headers: This contains all the headers required to send over to Sentry
 81 |     :param data: The actual payload to send over to Sentry
 82 |     :return:
 83 |     """
 84 |     result = requests.post(sentry_url, headers=headers, data=data)
 85 | 
 86 |     if result.status_code != 200:
 87 |         raise ValueError("Invalid response code from Sentry: {}".format(result.status_code))
 88 | 
 89 | 
 90 | def sqs_loop(client, url):
 91 |     """
 92 |     This is the main logic proxy-loop. This will keep polling and proxying data to Sentry.
 93 |     :param client:
 94 |     :param url:
 95 |     :return:
 96 |     """
 97 |     while True:
 98 |         logger.debug("[ ] Polling for messages...")
 99 | 
100 |         # Get the messages:
101 |         try:
102 |             messages = receive_messages(client, url)
103 |         except RetryError as re:
104 |             logger.error("Encountered too many Boto ClientErrors while fetching messages... Exiting...")
105 |             logger.exception(re.last_attempt.value)
106 |             sys.exit(-1)
107 | 
108 |         # Place each message into Sentry:
109 |         for message in messages["Messages"]:
110 |             body = None
111 |             try:
112 |                 body = json.loads(message["Body"])
113 | 
114 |             except json.decoder.JSONDecodeError as _:
115 |                 logger.error("Error decoding message sent. Going to delete the message and skip...")
116 | 
117 |             if body:
118 |                 sentry_url = body["url"]
119 |                 headers = body["headers"]
120 |                 data = base64.b64decode(body["data"])
121 | 
122 |                 # Send it over!
123 |                 try:
124 |                     logger.debug("[ ] Sending message to Sentry at URL: {}".format(sentry_url))
125 |                     send_to_sentry(sentry_url, headers, data)
126 |                     logger.debug("[+] Successfully sent message to Sentry at URL: {}".format(sentry_url))
127 |                 except RetryError as re:
128 |                     logger.error("Encountered too many errors sending data to Sentry with URL: {}. "
129 |                                  "Going to skip and delete message from SQS...".format(sentry_url))
130 |                     logger.exception(re.last_attempt.value)
131 | 
132 |             # Delete the message from SQS:
133 |             try:
134 |                 logger.debug("[ ] Deleting message from SQS with Receipt Handle: {}".format(message["ReceiptHandle"]))
135 |                 delete_message(client, url, message["ReceiptHandle"])
136 |                 logger.debug("[-] Deleted message from SQS with Receipt Handle: {}".format(message["ReceiptHandle"]))
137 |             except RetryError as re:
138 |                 logger.error("Encountered too many Boto ClientErrors while fetching messages... Exiting...")
139 |                 logger.exception(re.last_attempt.value)
140 |                 sys.exit(-1)
141 | 
142 | 
143 | @click.command()
144 | @click.option("--queue-name", type=click.STRING, required=True, help="The name of the SQS queue")
145 | @click.option("--queue-region", type=click.STRING, callback=validate_region, required=True,
146 |               help="The region where the SQS queue lives")
147 | @click.option("--queue-account", type=click.STRING, required=True, help="The AWS account that contains the SQS queue")
148 | @click.option("--log-level", type=click.STRING, required=False, help="The log level for the application - DEFAULT INFO",
149 |               default="INFO")
150 | def cli(queue_name, queue_region, queue_account, log_level):
151 |     """
152 |     Runs the Raven SQS Proxy service -- this will just poll SQS and will proxy the messages to Sentry
153 | 
154 |     :param queue_name - The name of the SQS queue
155 |     :return:
156 |     """
157 |     # Set the log level:
158 |     logger.setLevel(log_level)
159 | 
160 |     logger.info("[@] Raven SQS Poller is now running against queue Name/Account/Region: "
161 |                 "{name}/{account}/{region}".format(name=queue_name, account=queue_account, region=queue_region))
162 | 
163 |     # Create the SQS client:
164 |     client = boto3.client("sqs", region_name=queue_region)
165 | 
166 |     logger.debug("[ ] Fetching the URL of the SQS Queue...")
167 |     try:
168 |         url = client.get_queue_url(QueueName=queue_name, QueueOwnerAWSAccountId=queue_account)["QueueUrl"]
169 | 
170 |     except ClientError as ce:
171 |         logger.error("[X] Unable to get queue URL. Cannot continue. Exception is below:")
172 |         raise ce
173 | 
174 |     logger.debug("[+] Fetched the Queue URL: {}".format(url))
175 | 
176 |     logger.info("[-->] Now monitoring SQS for messages to send over to Sentry...")
177 |     sqs_loop(client, url)
178 | 


--------------------------------------------------------------------------------
/LICENSE.txt:
--------------------------------------------------------------------------------
  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. Definitions.
  8 | 
  9 |       "License" shall mean the terms and conditions for use, reproduction,
 10 |       and distribution as defined by Sections 1 through 9 of this document.
 11 | 
 12 |       "Licensor" shall mean the copyright owner or entity authorized by
 13 |       the copyright owner that is granting the License.
 14 | 
 15 |       "Legal Entity" shall mean the union of the acting entity and all
 16 |       other entities that control, are controlled by, or are under common
 17 |       control with that entity. For the purposes of this definition,
 18 |       "control" means (i) the power, direct or indirect, to cause the
 19 |       direction or management of such entity, whether by contract or
 20 |       otherwise, or (ii) ownership of fifty percent (50%) or more of the
 21 |       outstanding shares, or (iii) beneficial ownership of such entity.
 22 | 
 23 |       "You" (or "Your") shall mean an individual or Legal Entity
 24 |       exercising permissions granted by this License.
 25 | 
 26 |       "Source" form shall mean the preferred form for making modifications,
 27 |       including but not limited to software source code, documentation
 28 |       source, and configuration files.
 29 | 
 30 |       "Object" form shall mean any form resulting from mechanical
 31 |       transformation or translation of a Source form, including but
 32 |       not limited to compiled object code, generated documentation,
 33 |       and conversions to other media types.
 34 | 
 35 |       "Work" shall mean the work of authorship, whether in Source or
 36 |       Object form, made available under the License, as indicated by a
 37 |       copyright notice that is included in or attached to the work
 38 |       (an example is provided in the Appendix below).
 39 | 
 40 |       "Derivative Works" shall mean any work, whether in Source or Object
 41 |       form, that is based on (or derived from) the Work and for which the
 42 |       editorial revisions, annotations, elaborations, or other modifications
 43 |       represent, as a whole, an original work of authorship. For the purposes
 44 |       of this License, Derivative Works shall not include works that remain
 45 |       separable from, or merely link (or bind by name) to the interfaces of,
 46 |       the Work and Derivative Works thereof.
 47 | 
 48 |       "Contribution" shall mean any work of authorship, including
 49 |       the original version of the Work and any modifications or additions
 50 |       to that Work or Derivative Works thereof, that is intentionally
 51 |       submitted to Licensor for inclusion in the Work by the copyright owner
 52 |       or by an individual or Legal Entity authorized to submit on behalf of
 53 |       the copyright owner. For the purposes of this definition, "submitted"
 54 |       means any form of electronic, verbal, or written communication sent
 55 |       to the Licensor or its representatives, including but not limited to
 56 |       communication on electronic mailing lists, source code control systems,
 57 |       and issue tracking systems that are managed by, or on behalf of, the
 58 |       Licensor for the purpose of discussing and improving the Work, but
 59 |       excluding communication that is conspicuously marked or otherwise
 60 |       designated in writing by the copyright owner as "Not a Contribution."
 61 | 
 62 |       "Contributor" shall mean Licensor and any individual or Legal Entity
 63 |       on behalf of whom a Contribution has been received by Licensor and
 64 |       subsequently incorporated within the Work.
 65 | 
 66 |    2. Grant of Copyright License. Subject to the terms and conditions of
 67 |       this License, each Contributor hereby grants to You a perpetual,
 68 |       worldwide, non-exclusive, no-charge, royalty-free, irrevocable
 69 |       copyright license to reproduce, prepare Derivative Works of,
 70 |       publicly display, publicly perform, sublicense, and distribute the
 71 |       Work and such Derivative Works in Source or Object form.
 72 | 
 73 |    3. Grant of Patent License. Subject to the terms and conditions of
 74 |       this License, each Contributor hereby grants to You a perpetual,
 75 |       worldwide, non-exclusive, no-charge, royalty-free, irrevocable
 76 |       (except as stated in this section) patent license to make, have made,
 77 |       use, offer to sell, sell, import, and otherwise transfer the Work,
 78 |       where such license applies only to those patent claims licensable
 79 |       by such Contributor that are necessarily infringed by their
 80 |       Contribution(s) alone or by combination of their Contribution(s)
 81 |       with the Work to which such Contribution(s) was submitted. If You
 82 |       institute patent litigation against any entity (including a
 83 |       cross-claim or counterclaim in a lawsuit) alleging that the Work
 84 |       or a Contribution incorporated within the Work constitutes direct
 85 |       or contributory patent infringement, then any patent licenses
 86 |       granted to You under this License for that Work shall terminate
 87 |       as of the date such litigation is filed.
 88 | 
 89 |    4. Redistribution. You may reproduce and distribute copies of the
 90 |       Work or Derivative Works thereof in any medium, with or without
 91 |       modifications, and in Source or Object form, provided that You
 92 |       meet the following conditions:
 93 | 
 94 |       (a) You must give any other recipients of the Work or
 95 |           Derivative Works a copy of this License; and
 96 | 
 97 |       (b) You must cause any modified files to carry prominent notices
 98 |           stating that You changed the files; and
 99 | 
100 |       (c) You must retain, in the Source form of any Derivative Works
101 |           that You distribute, all copyright, patent, trademark, and
102 |           attribution notices from the Source form of the Work,
103 |           excluding those notices that do not pertain to any part of
104 |           the Derivative Works; and
105 | 
106 |       (d) If the Work includes a "NOTICE" text file as part of its
107 |           distribution, then any Derivative Works that You distribute must
108 |           include a readable copy of the attribution notices contained
109 |           within such NOTICE file, excluding those notices that do not
110 |           pertain to any part of the Derivative Works, in at least one
111 |           of the following places: within a NOTICE text file distributed
112 |           as part of the Derivative Works; within the Source form or
113 |           documentation, if provided along with the Derivative Works; or,
114 |           within a display generated by the Derivative Works, if and
115 |           wherever such third-party notices normally appear. The contents
116 |           of the NOTICE file are for informational purposes only and
117 |           do not modify the License. You may add Your own attribution
118 |           notices within Derivative Works that You distribute, alongside
119 |           or as an addendum to the NOTICE text from the Work, provided
120 |           that such additional attribution notices cannot be construed
121 |           as modifying the License.
122 | 
123 |       You may add Your own copyright statement to Your modifications and
124 |       may provide additional or different license terms and conditions
125 |       for use, reproduction, or distribution of Your modifications, or
126 |       for any such Derivative Works as a whole, provided Your use,
127 |       reproduction, and distribution of the Work otherwise complies with
128 |       the conditions stated in this License.
129 | 
130 |    5. Submission of Contributions. Unless You explicitly state otherwise,
131 |       any Contribution intentionally submitted for inclusion in the Work
132 |       by You to the Licensor shall be under the terms and conditions of
133 |       this License, without any additional terms or conditions.
134 |       Notwithstanding the above, nothing herein shall supersede or modify
135 |       the terms of any separate license agreement you may have executed
136 |       with Licensor regarding such Contributions.
137 | 
138 |    6. Trademarks. This License does not grant permission to use the trade
139 |       names, trademarks, service marks, or product names of the Licensor,
140 |       except as required for reasonable and customary use in describing the
141 |       origin of the Work and reproducing the content of the NOTICE file.
142 | 
143 |    7. Disclaimer of Warranty. Unless required by applicable law or
144 |       agreed to in writing, Licensor provides the Work (and each
145 |       Contributor provides its Contributions) on an "AS IS" BASIS,
146 |       WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or
147 |       implied, including, without limitation, any warranties or conditions
148 |       of TITLE, NON-INFRINGEMENT, MERCHANTABILITY, or FITNESS FOR A
149 |       PARTICULAR PURPOSE. You are solely responsible for determining the
150 |       appropriateness of using or redistributing the Work and assume any
151 |       risks associated with Your exercise of permissions under this License.
152 | 
153 |    8. Limitation of Liability. In no event and under no legal theory,
154 |       whether in tort (including negligence), contract, or otherwise,
155 |       unless required by applicable law (such as deliberate and grossly
156 |       negligent acts) or agreed to in writing, shall any Contributor be
157 |       liable to You for damages, including any direct, indirect, special,
158 |       incidental, or consequential damages of any character arising as a
159 |       result of this License or out of the use or inability to use the
160 |       Work (including but not limited to damages for loss of goodwill,
161 |       work stoppage, computer failure or malfunction, or any and all
162 |       other commercial damages or losses), even if such Contributor
163 |       has been advised of the possibility of such damages.
164 | 
165 |    9. Accepting Warranty or Additional Liability. While redistributing
166 |       the Work or Derivative Works thereof, You may choose to offer,
167 |       and charge a fee for, acceptance of support, warranty, indemnity,
168 |       or other liability obligations and/or rights consistent with this
169 |       License. However, in accepting such obligations, You may act only
170 |       on Your own behalf and on Your sole responsibility, not on behalf
171 |       of any other Contributor, and only if You agree to indemnify,
172 |       defend, and hold each Contributor harmless for any liability
173 |       incurred by, or claims asserted against, such Contributor by reason
174 |       of your accepting any such warranty or additional liability.
175 | 
176 |    END OF TERMS AND CONDITIONS
177 | 
178 |    APPENDIX: How to apply the Apache License to your work.
179 | 
180 |       To apply the Apache License to your work, attach the following
181 |       boilerplate notice, with the fields enclosed by brackets "[]"
182 |       replaced with your own identifying information. (Don't include
183 |       the brackets!)  The text should be enclosed in the appropriate
184 |       comment syntax for the file format. We also recommend that a
185 |       file or class name and description of purpose be included on the
186 |       same "printed page" as the copyright notice for easier
187 |       identification within third-party archives.
188 | 
189 |    Copyright 2014 Netflix, Inc.
190 | 
191 |    Licensed under the Apache License, Version 2.0 (the "License");
192 |    you may not use this file except in compliance with the License.
193 |    You may obtain a copy of the License at
194 | 
195 |        http://www.apache.org/licenses/LICENSE-2.0
196 | 
197 |    Unless required by applicable law or agreed to in writing, software
198 |    distributed under the License is distributed on an "AS IS" BASIS,
199 |    WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
200 |    See the License for the specific language governing permissions and
201 |    limitations under the License.
202 | 


--------------------------------------------------------------------------------