torrent-http-proxy

Special HTTP-proxy that has several features:

1. Routes requests to internal kubernetes resources (services/jobs).

2. Deploys kubernetes job on demand.

   For example if path /08ada5a7a6183aae1e09d831df6748d566095a10/Sintel%2FSintel.mp4 was called then a new torrent-web-seeder job will be started with injected environment variable INFO_HASH=08ada5a7a6183aae1e09d831df6748d566095a10. Proxy will wait until pod will be ready and then proxy requst to it with path /Sintel%2FSintel.mp4. All following requests will be proxied to this pod.

3. Grants HTTP-access to GRPC-services (including jobs)

4. Provides Token-authentication

5. Performs chaining of service calls (matryoshka-style)

   For example /08ada5a7a6183aae1e09d831df6748d566095a10/Sintel%2FSintel.mp4~hls/index.m3u8 will be processed with following steps:

   1. Proxy deploys content-transcoder job with injected environment variable SOURCE_URL=%PROXY_URL%/08ada5a7a6183aae1e09d831df6748d566095a10/Sintel%2FSintel.mp4. ~hls is the keyword that indicates what job or service should be invoked.
   2. content-transcoder requests SOURCE_URL for transcoding.
   3. Proxy deploys torrent-web-seeder job with injected environment variable INFO_HASH=08ada5a7a6183aae1e09d831df6748d566095a10.
   4. Proxy serves /index.m3u8 from content-transcoder

   There might be more services in chain. There is no limitation.

Server usage

% ./torrent-http-proxy help
NAME:
   torrent-http-proxy - Proxies all the things

USAGE:
   torrent-http-proxy [global options] command [command options] [arguments...]

VERSION:
   0.0.1

COMMANDS:
   help, h  Shows a list of commands or help for one command

GLOBAL OPTIONS:
   --host value                     listening host
   --port value                     http listening port (default: 8080)
   --jwt-secret value               JWT Secret [$SECRET]
   --redis-host value               redis host (default: "localhost") [$REDIS_MASTER_SERVICE_HOST, $ REDIS_SERVICE_HOST]
   --redis-port value               redis port (default: 6379) [$REDIS_MASTER_SERVICE_PORT, $ REDIS_SERVICE_PORT]
   --job-node-affinity-key value    Node Affinity Key [$JOB_NODE_AFFINITY_KEY]
   --job-node-affinity-value value  Node Affinity Key [$JOB_NODE_AFFINITY_VALUE]
   --job-namespace value            Job namespace (default: "webtor") [$JOB_NAMESPACE]
   --probe-host value               probe listening host
   --probe-port value               probe listening port (default: 8081)
   --help, -h                       show help
   --version, -v                    print the version