From 989600c5905c943f63b9238e4bf07812344838ed Mon Sep 17 00:00:00 2001
From: Mike Dalessio <mike@37signals.com>
Date: Mon, 10 Mar 2025 11:52:28 -0400
Subject: [PATCH] Configure structured JSON logging

This configuration is emulating what we do in HEY.
---
 Gemfile                           | 3 ++-
 Gemfile.lock                      | 9 +++++++++
 config/environments/production.rb | 3 +++
 3 files changed, 14 insertions(+), 1 deletion(-)

diff --git a/Gemfile b/Gemfile
index 6b7f73887..b06cf0c25 100644
--- a/Gemfile
+++ b/Gemfile
@@ -28,9 +28,10 @@ gem "redcarpet"
 gem "rouge"
 gem "jbuilder"
 
-# Telemetry
+# Telemetry and logging
 gem "sentry-ruby"
 gem "sentry-rails"
+gem "rails_structured_logging", bc: "rails-structured-logging"
 
 group :development, :test do
   gem "debug"
diff --git a/Gemfile.lock b/Gemfile.lock
index e5ceacaf0..bbd9718ed 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -1,3 +1,11 @@
+GIT
+  remote: https://github.com/basecamp/rails-structured-logging
+  revision: 0c2d45dd98c92156cc419e75cdad2aa903290d82
+  specs:
+    rails_structured_logging (0.2.0)
+      json
+      rails (>= 6.0.0)
+
 GIT
   remote: https://github.com/rails/rails.git
   revision: 5520bd835e3724ffafe3f719f9aafe951567f2f3
@@ -420,6 +428,7 @@ DEPENDENCIES
   propshaft
   puma (>= 5.0)
   rails!
+  rails_structured_logging!
   redcarpet
   rouge
   rqrcode
diff --git a/config/environments/production.rb b/config/environments/production.rb
index 7dc9258a5..4fd23bc8e 100644
--- a/config/environments/production.rb
+++ b/config/environments/production.rb
@@ -50,6 +50,9 @@ Rails.application.configure do
                                        .tap  { |logger| logger.formatter = ::Logger::Formatter.new }
                                        .then { |logger| ActiveSupport::TaggedLogging.new(logger) }
 
+  # Structured JSON logging
+  config.structured_logging.logger = ActiveSupport::Logger.new(STDOUT)
+
   # Prepend all log lines with the following tags.
   config.log_tags = [ :request_id ]