EXPERIMENTAL: Allow Logstash formatter to be enable for lograge logs.

Gemfile

@@ -173,6 +173,7 @@ gem 'memory_profiler', require: false, platform: :mri
 gem 'cppjieba_rb', require: false
 
 gem 'lograge', require: false
+gem 'logstash-event', require: false
 gem 'logster'
 
 gem 'sassc', require: false

Gemfile.lock

@@ -155,6 +155,7 @@ GEM
       activesupport (>= 4, < 5.2)
       railties (>= 4, < 5.2)
       request_store (~> 1.0)
+    logstash-event (1.2.02)
     logster (1.2.8)
     loofah (2.1.1)
       crass (~> 1.0.2)
@@ -438,6 +439,7 @@ DEPENDENCIES
   http_accept_language (~> 2.0.5)
   listen
   lograge
+  logstash-event
   logster
   lru_redux
   mail

config/initializers/100-lograge.rb

@@ -7,11 +7,18 @@ if (Rails.env.production? && SiteSetting.logging_provider == 'lograge') || ENV["
     config.lograge.custom_options = lambda do |event|
       exceptions = %w(controller action format id)
 
+      params = event.payload[:params].except(*exceptions)
+      params[:files].map!(&:headers) if params[:files]
+
       output = {
-        params: event.payload[:params].except(*exceptions),
+        params: params,
         database: RailsMultisite::ConnectionManagement.current_db,
         time: event.time,
       }
     end
+
+    if ENV["LOGSTASH_FORMATTER"]
+      config.lograge.formatter = Lograge::Formatters::Logstash.new
+    end
   end
 end