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wubloader
mirror of https://github.com/ekimekim/wubloader
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Mike Lang 21856c68aa Fix all instances of file.write() for py3 
In python 3, file.write() may do a partial write and returns the number of characters written.
In order to not lose data, we need to wrap every instance of file.write() with our new
common.writeall() wrapper that loops until the data is actually written.
api_ping Fix build dependency issues
backfiller Fix all instances of file.write() for py3
common Fix all instances of file.write() for py3
cutter Fix all instances of file.write() for py3
db_scripts use a UTC timestamp
downloader Fix all instances of file.write() for py3
monitoring overview.jsonnet: Use a template variable to allow restricting to certain nodes
nginx nginx: SSL server should have same options as non-SSL
playlist_manager Fix build dependency issues
postgres postgres: Changes to work with version 12
restreamer Fix build dependency issues
segment_coverage Fix all instances of file.write() for py3
sheetsync Fix build dependency issues
thrimbletrimmer Change wording on edit submitted alert()
thrimshim Fix build dependency issues
.gitignore Add some existing scripts for setting up prometheus
.travis.yml Add ability to explicitly pull and re-use layers from other commits when building
DATABASE.md Add tags and video_tags database columns
INSTALL.md Add playlist manager to all the various other places
LICENSE Update LICENSE
README.md Add playlist manager to all the various other places
SecurityModel.md Update SecurityModel.md
build Add playlist manager to all the various other places
docker-compose.jsonnet docker-compose: Fix bug preventing playlist manager metrics from being routed
generate-docker-compose replace readlink -f with realpath in build scripts
generate-flamegraph generate-flamegraph: Script to create a flamegraph by querying prometheus
get-build-tag replace readlink -f with realpath in build scripts
initial-design-doc.pdf Add initial design doc
k8s.jsonnet Actually fix serviceName for segment_coverage ingress

README.md

Wubloader is a system for saving, re-serving and cutting into videos of a target twitch (or probably other HLS, but some twitch specifics are assumed) stream.

It was designed to serve the needs of the Video Strike Team as part of Desert Bus For Hope.

A full design doc can be read at initial-design-doc.pdf, but a brief overview of the components:

  • downloader grabs segments from twitch and saves them to disk
  • restreamer serves segments from disk as well as playlist files allowing them to be streamed
  • backfiller queries restreamers of other servers in order to pick up segments this server doesn't have already, ie. it replicates missing segments.
  • cutter interacts with a database to perform cutting jobs
  • sheetsync syncs specifc database columns to a google doc which is the primary operator interface.
  • thrimshim acts as an interface between the thrimbletrimmer editor and the database.
  • thrimbletrimmer is a browser based video editor.
  • segment_coverage regularly checks whether there is complete segment coverage for each hour.
  • playlist_manager adds videos to youtube playlists depending on tags.
  • database hosts a Postgres database to store events to be edited.
  • nginx provides a webserver through which the other components are exposed to the outside world.
  • common provides code shared between the other components.
  • monitoring provides dashboards to allow the wubloader to be monitored.

Usage

All components are built as docker images. Components which access the disk expect a shared directory mounted at /mnt.

A docker-compose file is provided to run all components. See docker-compose.jsonnet to set configuration options, then generate the compose file with ./generate-docker-compose. Then run docker-compose up.

There is also a kubernetes-based option, but it is less configurable and only supports replication nodes. See k8s.jsonnet for details.

Further details of installing and configuring the backfiller are provided in INSTALL.md.