Switch to actioncable-enhanced-postgresql-adapter

This change will store large events (larger than 8KB) for ActionCable in the database. Therefore, it resolves issues where the payload was previously too large.

Fixes #1920
Fixes CODEOCEAN-Y8
Fixes CODEOCEAN-WS

Gemfile

@@ -2,6 +2,7 @@
 
 source 'https://rubygems.org'
 
+gem 'actioncable-enhanced-postgresql-adapter'
 gem 'bcrypt'
 gem 'bootsnap', require: false
 gem 'bootstrap-will_paginate'

Gemfile.lock

@@ -103,6 +103,10 @@ GIT
 GEM
   remote: https://rubygems.org/
   specs:
+    actioncable-enhanced-postgresql-adapter (1.0.1)
+      actioncable (>= 6.0)
+      connection_pool (>= 2.2.5)
+      pg (~> 1.5)
     activemodel-serializers-xml (1.0.2)
       activemodel (> 5.x)
       activesupport (> 5.x)
@@ -559,6 +563,7 @@ PLATFORMS
   ruby
 
 DEPENDENCIES
+  actioncable-enhanced-postgresql-adapter
   bcrypt
   better_errors
   binding_of_caller

config/cable.yml

@@ -1,14 +1,20 @@
 development:
-  adapter: async
+  adapter: enhanced_postgresql
 
 test:
   adapter: test
 
 staging:
-  adapter: postgresql
+  adapter: enhanced_postgresql
 
 production:
-  adapter: postgresql # redis
-  # all other options below are only used for redis
+  adapter: enhanced_postgresql # OR postgresql OR redis
+
+  ### Config options for `enhanced_postgresql`
+  # payload_encryptor_secret: # Required. Will be the defined value or `Rails.application.secret_key_base` or `ENV["SECRET_KEY_BASE"]`
+  # url: <%= ENV.fetch("DATABASE_URL") { "postgresql://localhost:5432/code_ocean_production" } %>
+  # connection_pool_size: <%= ENV.fetch("RAILS_MAX_THREADS", 5).to_i %> # Only used in conjunction with `url`
+
+  ### Config options for `redis`
   # url: <%= ENV.fetch("REDIS_URL") { "redis://localhost:6379/1" } %>
   # channel_prefix: code_ocean_production