How to setup anycable with docker(ruby on rails)? - ruby-on-rails

Question

How can i setup anycable(action cable) port on docker?
this is my Dockerfile for anycable
FROM ruby:2.6.3-alpine3.10
WORKDIR /home/app
COPY . /home/app/
EXPOSE 50051
CMD ["anycable"]
and this is my docker-compose
version: "3"
services:
app:
build:
context: .
dockerfile: ./dockers/app/Dockerfile
container_name: out_app
restart: unless-stopped
volumes:
- .:/app
- /app/node_modules
- /app/public/assets
- /app/public/packs
ports:
- 3000:3000
db:
build:
context: .
dockerfile: ./dockers/postgis/Dockerfile
container_name: out_db
environment:
POSTGRES_USER: ${DOCKER_DB_USER}
POSTGRES_PASSWORD: ${DOCKER_DB_PASSWORD}
POSTGRES_DB: ${DOCKER_DB_NAME}
volumes:
- /docker_data/giggle/postgres:/var/lib/postgresql/data
ports:
- 5435:5432
nginx:
build:
context: .
dockerfile: ./dockers/web/Dockerfile
container_name: out_web
restart: unless-stopped
ports:
- 80:80
- 443:443
depends_on:
- app
volumes:
- ./dockers/web/nginx.conf:/etc/nginx/conf.d/default.conf
- ./data/certbot/conf:/etc/letsencrypt
- ./data/certbot/www:/var/www/certbot
certbot:
image: certbot/certbot
restart: unless-stopped
volumes:
- ./data/certbot/conf:/etc/letsencrypt
- ./data/certbot/www:/var/www/certbot
entrypoint: "/bin/sh -c 'trap exit TERM; while :; do certbot renew; sleep 12h & wait $${!}; done;'"
redis:
image: redis
volumes:
- ../../tmp/db:/var/lib/redis/data
delayed_job:
build:
context: .
dockerfile: ./dockers/delayed_job/Dockerfile
container_name: out_delayed_job
command: bundle exec rails jobs:work
depends_on:
- db
volumes:
- .:/app
anycable:
image: 'anycable/anycable-go:edge-mrb'
ports:
- "3334"
environment:
ANYCABLE_HOST: 0.0.0.0
REDIS_URL: redis://redis:6379/1
ANYCABLE_RPC_HOST: 0.0.0.0:3334
ANYCABLE_DEBUG: 1
command: bundle exec anycable
anycable:
build:
context: .
dockerfile: ./dockers/anycable/Dockerfile
container_name: anycable
command: bundle exec anycable
depends_on:
- redis

Answer 1

You provided anycable-go configuration. To set custom port for anycable-go server add ANYCABLE_PORT: <your port> to anycable-go image environment or expose image port like ports: ['<your_port>:8080'].
Check anycable configuration page (contains env variables info): https://docs.anycable.io/#/anycable-go/configuration

Answer 2

You need to setup anycable-rails by adding anycable-rails gem to your Gemfile:
gem "anycable-rails", "~> 1.1"
when using Redis broadcast adapter
gem "redis", ">= 4.0"
(and don't forget to run bundle install).
Then, run the interactive configuration wizard via Rails generators:
bundle exec rails g anycable:setup
Configuration
Next, update your Action Cable configuration:
# config/cable.yml
production:
# Set adapter to any_cable to activate AnyCable
adapter: any_cable
Install WebSocket server and specify its URL in the configuration:
For development it's likely the localhost
# config/environments/development.rb
config.action_cable.url = "ws://localhost:8080/cable"
For production it's likely to have a sub-domain and secure connection
# config/environments/production.rb
config.action_cable.url = "wss://ws.example.com/cable"
Now you can start AnyCable RPC server for your application:
$ bundle exec anycable
#> Starting AnyCable gRPC server (pid: 48111)
#> Serving Rails application from ./config/environment.rb
Don't forget to provide Rails env in production
$ RAILS_ENV=production bundle exec anycable
NOTE: you don't need to specify `-r option (see CLI docs), your application would be loaded from config/environment.rb.
And, finally, run AnyCable WebSocket server, e.g. anycable-go:
$ anycable-go --host=localhost --port=8080
INFO 2019-08-07T16:37:46.387Z context=main Starting AnyCable v0.6.2-13-gd421927 (with mruby 1.2.0 (2015-11-17)) (pid: 1362)
INFO 2019-08-07T16:37:46.387Z context=main Handle WebSocket connections at /cable
INFO 2019-08-07T16:37:46.388Z context=http Starting HTTP server at localhost:8080
You can store AnyCable-specific configuration in YAML file (similar to Action Cable one):
# config/anycable.yml
development:
redis_url: redis://localhost:6379/1
production:
redis_url: redis://my.redis.io:6379/1