* ActiveSupport::BufferedLogger#silence is deprecated. If you want to squelch

    logs for a certain block, change the log level for that block.

*   ActiveSupport::BufferedLogger#open_log is deprecated.  This method should
    not have been public in the first place.

*   ActiveSupport::BufferedLogger's behavior of automatically creating the
    directory for your log file is deprecated.  Please make sure to create the
    directory for your log file before instantiating.

*   ActiveSupport::BufferedLogger#auto_flushing is deprecated.  Either set the
    sync level on the underlying file handle like this:

        f = File.open('foo.log', 'w')
        f.sync = true
        ActiveSupport::BufferedLogger.new f

    Or tune your filesystem.  The FS cache is now what controls flushing.

*   ActiveSupport::BufferedLogger#flush is deprecated.  Set sync on your
    filehandle, or tune your filesystem.

1 files changed, 11 insertions, 3 deletions

diff --git a/railties/lib/rails/application/bootstrap.rb b/railties/lib/rails/application/bootstrap.rb
index c2cb121e42..1ae90056d9 100644
--- a/railties/lib/rails/application/bootstrap.rb
+++ b/railties/lib/rails/application/bootstrap.rb
@@ -24,9 +24,18 @@ module Rails
       initializer :initialize_logger, :group => :all do
         Rails.logger ||= config.logger || begin
           path = config.paths["log"].first
-          logger = ActiveSupport::TaggedLogging.new(ActiveSupport::BufferedLogger.new(path))
+          unless File.exist? File.dirname path
+            FileUtils.mkdir_p File.dirname path
+          end
+
+          f = File.open path, 'w'
+          f.binmode
+          f.sync = !Rails.env.production? # make sure every write flushes
+
+          logger = ActiveSupport::TaggedLogging.new(
+            ActiveSupport::BufferedLogger.new(f)
+          )
           logger.level = ActiveSupport::BufferedLogger.const_get(config.log_level.to_s.upcase)
-          logger.auto_flushing = false if Rails.env.production?
           logger
         rescue StandardError
           logger = ActiveSupport::TaggedLogging.new(ActiveSupport::BufferedLogger.new(STDERR))
@@ -37,7 +46,6 @@ module Rails
           )
           logger
         end
-        at_exit { Rails.logger.flush if Rails.logger.respond_to?(:flush) }
       end
 
       # Initialize cache early in the stack so railties can make use of it.