├── .gitignore ├── CONTRIBUTING.md ├── Dockerfile ├── LICENSE ├── README.md ├── app.yaml ├── load-test.py ├── main.py ├── requirements.txt └── worker ├── Dockerfile ├── monitor.py ├── procfile ├── requirements.txt ├── worker.py └── worker.yaml /.gitignore: -------------------------------------------------------------------------------- 1 | .git 2 | .idea 3 | -------------------------------------------------------------------------------- /CONTRIBUTING.md: -------------------------------------------------------------------------------- 1 | # How to become a contributor and submit your own code 2 | 3 | ## Contributor License Agreements 4 | 5 | We'd love to accept your sample apps and patches! Before we can take them, we 6 | have to jump a couple of legal hurdles. 7 | 8 | Please fill out either the individual or corporate Contributor License 9 | Agreement (CLA). 10 | 11 | * If you are an individual writing original source code and you're sure you 12 | own the intellectual property, then you'll need to sign an [individual CLA] 13 | (https://developers.google.com/open-source/cla/individual). 14 | * If you work for a company that wants to allow you to contribute your work, 15 | then you'll need to sign a [corporate CLA] 16 | (https://developers.google.com/open-source/cla/corporate). 17 | 18 | Follow either of the two links above to access the appropriate CLA and 19 | instructions for how to sign and return it. Once we receive it, we'll 20 | be able to accept your pull requests. 21 | 22 | ## Contributing A Patch 23 | 24 | 1. Submit an issue describing your proposed change to the repo in question. 25 | 1. The repo owner will respond to your issue promptly. 26 | 1. If your proposed change is accepted, and you haven't already done so, sign a 27 | Contributor License Agreement (see details above). 28 | 1. Fork the desired repo, develop and test your code changes. 29 | 1. Ensure that your code adheres to the existing style in the sample to which 30 | you are contributing. Refer to the 31 | [Google Cloud Platform Samples Style Guide] 32 | (https://github.com/GoogleCloudPlatform/Template/wiki/style.html) for the 33 | recommended coding standards for this organization. 34 | 1. Ensure that your code has an appropriate set of unit tests which all pass. 35 | 1. Submit a pull request. 36 | 37 | ## Testing 38 | 39 | See [TESTING.md](TESTING.md). 40 | -------------------------------------------------------------------------------- /Dockerfile: -------------------------------------------------------------------------------- 1 | # Copyright 2016 Google Inc. 2 | # 3 | # Licensed under the Apache License, Version 2.0 (the "License"); 4 | # you may not use this file except in compliance with the License. 5 | # You may obtain a copy of the License at 6 | # 7 | # http://www.apache.org/licenses/LICENSE-2.0 8 | # 9 | # Unless required by applicable law or agreed to in writing, software 10 | # distributed under the License is distributed on an "AS IS" BASIS, 11 | # WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 12 | # See the License for the specific language governing permissions and 13 | # limitations under the License 14 | 15 | # The Google App Engine python runtime is Debian Jessie with Python installed 16 | # and various os-level packages to allow installation of popular Python 17 | # libraries. The source is on github at: 18 | # https://github.com/GoogleCloudPlatform/python-docker 19 | FROM gcr.io/google_appengine/python 20 | 21 | RUN apt-get -y update && apt-get install -y libav-tools 22 | 23 | # Create a virtualenv for dependencies. This isolates these packages from 24 | # system-level packages. 25 | RUN virtualenv /env 26 | 27 | # Setting these environment variables are the same as running 28 | # source /env/bin/activate. 29 | ENV VIRTUAL_ENV /env 30 | ENV PATH /env/bin:$PATH 31 | 32 | # Copy the application's requirements.txt and run pip to install all 33 | # dependencies into the virtualenv. 34 | ADD requirements.txt /app/requirements.txt 35 | RUN pip install -r /app/requirements.txt 36 | 37 | # # Add the application source code. 38 | ADD . /app 39 | 40 | CMD gunicorn -b :$PORT main:app 41 | -------------------------------------------------------------------------------- /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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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 [yyyy] [name of copyright owner] 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 | -------------------------------------------------------------------------------- /README.md: -------------------------------------------------------------------------------- 1 | # AppEngine Transcoder Example 2 | 3 | Demonstration of using libav in App Engine Flexible Environment. 4 | 5 | Please note this is a simple demonstration repo and not ready to productionize! 6 | 7 | See the associated Medium post for more info. Please use the Issue Tracker for any problems. 8 | 9 | https://medium.com/@waprin/scalable-video-transcoding-with-app-engine-flexible-621f6e7fdf56#.f2vgzta5q 10 | 11 | ## Overview 12 | 13 | Docekrfile and app.yaml are used to configure the main web worker, main.py. 14 | 15 | worker/ contains the Dockerfile and code for the background process that does the transcoding. 16 | 17 | ## Deploying 18 | 19 | Create a Google Cloud project. Download the Google Cloud SDK. 20 | 21 | gcloud init 22 | 23 | go in to the worker/ directory and replace PROJECT_ID with your project ID, then 24 | 25 | gcloud app deploy worker.yaml 26 | 27 | That will deploy the backend module. To deploy the frontend module, replace PROJECT_ID 28 | in main.py with your project ID. Then 29 | 30 | gcloud app deploy app.yaml 31 | 32 | After that, hitting https://.appspot.com/transcode will kick off the transcoding 33 | process. 34 | 35 | ## Help 36 | 37 | File an issue on the issue tracker. 38 | 39 | ## Copyright 40 | 41 | Copyright Google 2016, but not an official Google product or service 42 | 43 | ## Contributing changes 44 | 45 | * See [CONTRIBUTING.md](CONTRIBUTING.md) 46 | 47 | ## Licensing 48 | 49 | * See [LICENSE](LICENSE) 50 | -------------------------------------------------------------------------------- /app.yaml: -------------------------------------------------------------------------------- 1 | # Copyright 2015 Google Inc. 2 | # 3 | # Licensed under the Apache License, Version 2.0 (the "License"); 4 | # you may not use this file except in compliance with the License. 5 | # You may obtain a copy of the License at 6 | # 7 | # http://www.apache.org/licenses/LICENSE-2.0 8 | # 9 | # Unless required by applicable law or agreed to in writing, software 10 | # distributed under the License is distributed on an "AS IS" BASIS, 11 | # WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 12 | # See the License for the specific language governing permissions and 13 | # limitations under the License. 14 | 15 | # This file specifies your Python application's runtime configuration. 16 | # See https://cloud.google.com/appengine/docs/managed-vms/config for details. 17 | 18 | runtime: custom 19 | env: flex 20 | -------------------------------------------------------------------------------- /load-test.py: -------------------------------------------------------------------------------- 1 | # Copyright 2015 Google Inc. All Rights Reserved. 2 | # 3 | # Licensed under the Apache License, Version 2.0 (the "License"); 4 | # you may not use this file except in compliance with the License. 5 | # You may obtain a copy of the License at 6 | # 7 | # http://www.apache.org/licenses/LICENSE-2.0 8 | # 9 | # Unless required by applicable law or agreed to in writing, software 10 | # distributed under the License is distributed on an "AS IS" BASIS, 11 | # WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 12 | # See the License for the specific language governing permissions and 13 | # limitations under the License. 14 | 15 | # A simple load test to demonstrate autoscaling 16 | 17 | import time 18 | import requests 19 | 20 | PROJECT_ID = 'your-project-id' 21 | URL = 'https://{}.appspot.com/transcode'.format(PROJECT_ID) 22 | NUM_REQUESTS = 100 23 | DELAY=.1 24 | 25 | for i in range(0, NUM_REQUESTS): 26 | requests.get(URL) 27 | time.sleep(DELAY) 28 | -------------------------------------------------------------------------------- /main.py: -------------------------------------------------------------------------------- 1 | # Copyright 2015 Google Inc. All Rights Reserved. 2 | # 3 | # Licensed under the Apache License, Version 2.0 (the "License"); 4 | # you may not use this file except in compliance with the License. 5 | # You may obtain a copy of the License at 6 | # 7 | # http://www.apache.org/licenses/LICENSE-2.0 8 | # 9 | # Unless required by applicable law or agreed to in writing, software 10 | # distributed under the License is distributed on an "AS IS" BASIS, 11 | # WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 12 | # See the License for the specific language governing permissions and 13 | # limitations under the License. 14 | 15 | from flask import Flask 16 | import os 17 | import string 18 | import random 19 | 20 | import logging 21 | from gcloud import storage, pubsub 22 | 23 | PROJECT_ID = 'your-project-id' 24 | 25 | TOPIC = 'projects/{}/topics/message'.format(PROJECT_ID) 26 | 27 | app = Flask(__name__) 28 | app.config['SECRET_KEY']='test' 29 | 30 | app.debug = True 31 | 32 | @app.route('/transcode') 33 | def transcode(): 34 | pubsub_client = pubsub.Client(PROJECT_ID) 35 | topic = pubsub_client.topic("message") 36 | topic.publish(b"message") 37 | return "Done" 38 | 39 | 40 | if __name__ == '__main__': 41 | # This is used when running locally. Gunicorn is used to run the 42 | # application on Google App Engine. See entrypoint in app.yaml. 43 | app.run(host='127.0.0.1', port=8080, debug=True) 44 | # [END app] 45 | -------------------------------------------------------------------------------- /requirements.txt: -------------------------------------------------------------------------------- 1 | Flask==0.10.1 2 | gcloud==0.14.0 3 | gunicorn==19.6.0 4 | oauth2client==2.1.0 5 | Flask-SQLAlchemy==2.1 6 | PyMySQL==0.7.3 7 | Flask-PyMongo==0.4.1 8 | PyMongo==3.2.2 9 | six==1.10.0 10 | requests[security]==2.10.0 11 | honcho==0.7.1 12 | psq==0.3.0 13 | -------------------------------------------------------------------------------- /worker/Dockerfile: -------------------------------------------------------------------------------- 1 | # Copyright 2016 Google Inc. 2 | # 3 | # Licensed under the Apache License, Version 2.0 (the "License"); 4 | # you may not use this file except in compliance with the License. 5 | # You may obtain a copy of the License at 6 | # 7 | # http://www.apache.org/licenses/LICENSE-2.0 8 | # 9 | # Unless required by applicable law or agreed to in writing, software 10 | # distributed under the License is distributed on an "AS IS" BASIS, 11 | # WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 12 | # See the License for the specific language governing permissions and 13 | # limitations under the License 14 | 15 | # The Google App Engine python runtime is Debian Jessie with Python installed 16 | # and various os-level packages to allow installation of popular Python 17 | # libraries. The source is on github at: 18 | # https://github.com/GoogleCloudPlatform/python-docker 19 | FROM gcr.io/google_appengine/python 20 | 21 | RUN apt-get -y update && apt-get install -y libav-tools 22 | 23 | 24 | # Create a virtualenv for dependencies. This isolates these packages from 25 | # system-level packages. 26 | RUN virtualenv /env 27 | 28 | # Setting these environment variables are the same as running 29 | # source /env/bin/activate. 30 | ENV VIRTUAL_ENV /env 31 | ENV PATH /env/bin:$PATH 32 | 33 | # Copy the application's requirements.txt and run pip to install all 34 | # dependencies into the virtualenv. 35 | ADD requirements.txt /app/requirements.txt 36 | RUN pip install -r /app/requirements.txt 37 | 38 | # # Add the application source code. 39 | ADD . /app 40 | 41 | CMD honcho start -f /app/procfile worker monitor 42 | -------------------------------------------------------------------------------- /worker/monitor.py: -------------------------------------------------------------------------------- 1 | # Copyright 2016 Google Inc. All Rights Reserved. 2 | # 3 | # Licensed under the Apache License, Version 2.0 (the "License"); 4 | # you may not use this file except in compliance with the License. 5 | # You may obtain a copy of the License at 6 | # 7 | # http://www.apache.org/licenses/LICENSE-2.0 8 | # 9 | # Unless required by applicable law or agreed to in writing, software 10 | # distributed under the License is distributed on an "AS IS" BASIS, 11 | # WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 12 | # See the License for the specific language governing permissions and 13 | # limitations under the License. 14 | 15 | from flask import Flask 16 | 17 | monitor_app = Flask(__name__) 18 | 19 | 20 | # The health check reads the PID file created by psqworker and checks the proc 21 | # filesystem to see if the worker is running. This same pattern can be used for 22 | # rq and celery. 23 | @monitor_app.route('/_ah/health') 24 | def health(): 25 | return 'healthy', 200 26 | 27 | 28 | @monitor_app.route('/') 29 | def index(): 30 | return health() 31 | 32 | if __name__ == '__main__': 33 | monitor_app.run('0.0.0.0', 8080) 34 | -------------------------------------------------------------------------------- /worker/procfile: -------------------------------------------------------------------------------- 1 | worker: python /app/worker.py 2 | monitor: python monitor.py 3 | -------------------------------------------------------------------------------- /worker/requirements.txt: -------------------------------------------------------------------------------- 1 | Flask==0.10.1 2 | gcloud==0.14.0 3 | gunicorn==19.6.0 4 | oauth2client==2.1.0 5 | Flask-SQLAlchemy==2.1 6 | PyMySQL==0.7.3 7 | Flask-PyMongo==0.4.1 8 | PyMongo==3.2.2 9 | six==1.10.0 10 | requests[security]==2.10.0 11 | honcho==0.7.1 12 | psq==0.3.0 13 | -------------------------------------------------------------------------------- /worker/worker.py: -------------------------------------------------------------------------------- 1 | # Copyright 2015 Google Inc. All Rights Reserved. 2 | # 3 | # Licensed under the Apache License, Version 2.0 (the "License"); 4 | # you may not use this file except in compliance with the License. 5 | # You may obtain a copy of the License at 6 | # 7 | # http://www.apache.org/licenses/LICENSE-2.0 8 | # 9 | # Unless required by applicable law or agreed to in writing, software 10 | # distributed under the License is distributed on an "AS IS" BASIS, 11 | # WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 12 | # See the License for the specific language governing permissions and 13 | # limitations under the License. 14 | 15 | import os 16 | from gcloud import storage, pubsub 17 | import sys 18 | 19 | 20 | PROJECT_ID = 'your-project-id' 21 | TOPIC = 'projects/{}/topics/message'.format(PROJECT_ID) 22 | 23 | 24 | def transcode(): 25 | client = storage.Client(PROJECT_ID) 26 | bucket = client.bucket(PROJECT_ID) 27 | blob = bucket.blob('sample.mp4') 28 | with open('/tmp/sample2.mp4', 'w') as f: 29 | blob.download_to_file(f) 30 | os.system('rm /tmp/output.webm') 31 | ret = os.system('/usr/bin/avconv -i /tmp/sample2.mp4 -c:v libvpx -crf 10 -b:v 1M -c:a libvorbis /tmp/output.webm') 32 | if ret: 33 | sys.stderr.write("FAILED") 34 | return "Failed" 35 | blob = bucket.blob('output.webm') 36 | blob.upload_from_file(open('/tmp/output.webm')) 37 | sys.stderr.write("SUCCESS") 38 | return "SUCCESS" 39 | 40 | if __name__ == '__main__': 41 | pubsub_client = pubsub.Client(PROJECT_ID) 42 | topic = pubsub_client.topic("message") 43 | if not topic.exists(): 44 | topic.create() 45 | sub = pubsub.Subscription("mysub", topic=topic) 46 | if not sub.exists(): 47 | sub.create() 48 | sys.stderr.write("Polling the topic") 49 | while True: 50 | messages = sub.pull( 51 | return_immediately=False, max_messages=110) 52 | if messages: 53 | transcode() 54 | 55 | 56 | 57 | 58 | -------------------------------------------------------------------------------- /worker/worker.yaml: -------------------------------------------------------------------------------- 1 | # Copyright 2016 Google Inc. 2 | # 3 | # Licensed under the Apache License, Version 2.0 (the "License"); 4 | # you may not use this file except in compliance with the License. 5 | # You may obtain a copy of the License at 6 | # 7 | # http://www.apache.org/licenses/LICENSE-2.0 8 | # 9 | # Unless required by applicable law or agreed to in writing, software 10 | # distributed under the License is distributed on an "AS IS" BASIS, 11 | # WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 12 | # See the License for the specific language governing permissions and 13 | # limitations under the License. 14 | 15 | service: worker 16 | runtime: custom 17 | env: flex 18 | --------------------------------------------------------------------------------