Add and configure Sentry gem

Gemfile

@@ -69,6 +69,10 @@ gem 'rack-cors'
 # Use Redis adapter to run Action Cable in production
 # gem "redis", ">= 4.0.1"
 
+# Sentry integration according to their documentation [https://docs.sentry.io/platforms/ruby/guides/rails/]
+gem "sentry-ruby"
+gem "sentry-rails"
+
 gem 'stringex'
 
 # Use Kredis to get higher-level data types in Redis [https://github.com/rails/kredis]

Gemfile.lock

@@ -401,6 +401,12 @@ GEM
       rexml (~> 3.2, >= 3.2.5)
       rubyzip (>= 1.2.2, < 3.0)
       websocket (~> 1.0)
+    sentry-rails (5.21.0)
+      railties (>= 5.0)
+      sentry-ruby (~> 5.21.0)
+    sentry-ruby (5.21.0)
+      bigdecimal
+      concurrent-ruby (~> 1.0, >= 1.0.2)
     simplecov (0.22.0)
       docile (~> 1.1)
       simplecov-html (~> 0.11)
@@ -507,6 +513,8 @@ DEPENDENCIES
   rubocop-rails
   scout_apm
   selenium-webdriver
+  sentry-rails
+  sentry-ruby
   simplecov
   simplecov-lcov
   sprockets-rails

README.md

@@ -50,6 +50,9 @@ Lots more [Scout settings](https://scoutapm.com/docs/ruby/configuration#environm
 `SCOUT_LOG_LEVEL`: defaults to INFO which is probably fine. Controls verboseness of Scout logs
 `SCOUT_NAME`: set a unique name per deployed tier to avoid confusion.
 
+`SENTRY_DSN`: The Sentry-provided key to enable exception logging. Sentry integration is skipped if not present.
+`SENTRY_ENV`: Sentry environment for the application. Defaults to 'unknown' if unset.
+
 ### Authentication
 
 #### Required in all environments

config/initializers/sentry.rb

@@ -0,0 +1,8 @@
+# frozen_string_literal: true
+
+Sentry.init do |config|
+  return unless ENV.has_key?('SENTRY_DSN')
+  config.dsn = ENV.fetch('SENTRY_DSN')
+  config.breadcrumbs_logger = [:active_support_logger, :http_logger]
+  config.environment = ENV.fetch('SENTRY_ENV', 'unknown')
+end