From 54afed9fb46fcc5b7de47dc107280359a672da77 Mon Sep 17 00:00:00 2001
From: Vishnu Narayanan <iamwishnu@gmail.com>
Date: Mon, 18 Nov 2024 12:36:27 +0530
Subject: [PATCH] feat: add judoscaler gem for heroku autoscaling (#10419)

- add judoscaler gem to allow judoscale use in heroku environments
- This will allow auto scaling for both web and worker dynos across both
standard-1x/2x and performance dynos
- This will scaling in response to queue time rather than response
time(heroku default)
- This also allows you to scale multiple dynos in and out at once,
rather than scaling them one at a time, as is the default.

Ref
----
1. https://judoscale.com/
2. https://devcenter.heroku.com/articles/judoscale
---
 Gemfile               | 3 +++
 Gemfile.lock          | 9 +++++++++
 config/application.rb | 6 ++++++
 3 files changed, 18 insertions(+)

diff --git a/Gemfile b/Gemfile
index 2e1e3ec14..f18305970 100644
--- a/Gemfile
+++ b/Gemfile
@@ -181,6 +181,9 @@ gem 'reverse_markdown'
 group :production do
   # we dont want request timing out in development while using byebug
   gem 'rack-timeout'
+  # for heroku autoscaling
+  gem 'judoscale-rails', require: false
+  gem 'judoscale-sidekiq', require: false
 end
 
 group :development do
diff --git a/Gemfile.lock b/Gemfile.lock
index 41140bdda..e2f5c91be 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -397,6 +397,13 @@ GEM
       hana (~> 1.3)
       regexp_parser (~> 2.0)
       uri_template (~> 0.7)
+    judoscale-rails (1.8.2)
+      judoscale-ruby (= 1.8.2)
+      railties
+    judoscale-ruby (1.8.2)
+    judoscale-sidekiq (1.8.2)
+      judoscale-ruby (= 1.8.2)
+      sidekiq (>= 5.0)
     jwt (2.8.1)
       base64
     kaminari (1.2.2)
@@ -891,6 +898,8 @@ DEPENDENCIES
   jbuilder
   json_refs
   json_schemer
+  judoscale-rails
+  judoscale-sidekiq
   jwt
   kaminari
   koala
diff --git a/config/application.rb b/config/application.rb
index 1aedfc860..f3443ddb3 100644
--- a/config/application.rb
+++ b/config/application.rb
@@ -27,6 +27,12 @@ if ENV.fetch('SENTRY_DSN', false).present?
   require 'sentry-sidekiq'
 end
 
+# heroku autoscaling
+if ENV.fetch('JUDOSCALE_URL', false).present?
+  require 'judoscale-rails'
+  require 'judoscale-sidekiq'
+end
+
 module Chatwoot
   class Application < Rails::Application
     # Initialize configuration defaults for originally generated Rails version.