add a broadcasting logger so we can split logs

1 files changed, 23 insertions, 0 deletions

diff --git a/activesupport/lib/active_support/logger.rb b/activesupport/lib/active_support/logger.rb
index 66e8fcadb4..8288368d8d 100644
--- a/activesupport/lib/active_support/logger.rb
+++ b/activesupport/lib/active_support/logger.rb
@@ -1,6 +1,29 @@
 require 'logger'
 
 module ActiveSupport
+  # Broadcasts logs to multiple loggers
+  class BroadcastLogger < ::Logger # :nodoc:
+    attr_reader :logs
+
+    def initialize(logs)
+      super(nil)
+      @logs = logs
+    end
+
+    def add(severity, message = nil, progname = nil, &block)
+      super
+      logs.each { |l| l.add(severity, message, progname, &block) }
+    end
+
+    def <<(x)
+      logs.each { |l| l << x }
+    end
+
+    def close
+      logs.each(&:close)
+    end
+  end
+
   class Logger < ::Logger
     def initialize(*args)
       super