Merge branch 'sh-structured-logging' into 'master'

Add structured logging for Rails processes

See merge request !12928

1 files changed, 21 insertions, 0 deletions

diff --git a/config/initializers/lograge.rb b/config/initializers/lograge.rb
new file mode 100644
index 00000000000..14902316240
--- /dev/null
+++ b/config/initializers/lograge.rb
@@ -0,0 +1,21 @@
+# Only use Lograge for Rails
+unless Sidekiq.server?
+  filename = File.join(Rails.root, 'log', "#{Rails.env}_json.log")
+
+  Rails.application.configure do
+    config.lograge.enabled = true
+    # Store the lograge JSON files in a separate file
+    config.lograge.keep_original_rails_log = true
+    # Don't use the Logstash formatter since this requires logstash-event, an
+    # unmaintained gem that monkey patches `Time`
+    config.lograge.formatter = Lograge::Formatters::Json.new
+    config.lograge.logger = ActiveSupport::Logger.new(filename)
+    # Add request parameters to log output
+    config.lograge.custom_options = lambda do |event|
+      {
+        time: event.time,
+        params: event.payload[:params].except(%w(controller action format))
+      }
+    end
+  end
+end