Allow stderr_path and stdout_path to be set in the config

As opposed to doing this in the shell, this allows the files to
be reopened reliably after rotation.

While we're at it, use $stderr/$stdout instead of STDERR/STDOUT
since they seem to be more favored.

1 files changed, 3 insertions, 0 deletions

diff --git a/lib/unicorn.rb b/lib/unicorn.rb
index 998f8b8..d5867b1 100644
--- a/lib/unicorn.rb
+++ b/lib/unicorn.rb
@@ -90,6 +90,9 @@ module Unicorn
       listen(Const::DEFAULT_LISTENER) if @listeners.empty?
       self.pid = @config[:pid]
       build_app! if @preload_app
+      $stderr.reopen(@stderr_path, "a") if @stderr_path
+      $stdout.reopen(@stdout_path, "a") if @stdout_path
+      $stderr.sync = $stdout.sync = true
       spawn_missing_workers
       self
     end