1 files changed, 69 insertions, 0 deletions
diff --git a/nixpkgs/nixos/modules/services/misc/defaultUnicornConfig.rb b/nixpkgs/nixos/modules/services/misc/defaultUnicornConfig.rb
new file mode 100644
index 00000000000..0b58c59c7a5
--- /dev/null
+++ b/nixpkgs/nixos/modules/services/misc/defaultUnicornConfig.rb
@@ -0,0 +1,69 @@
+worker_processes 3
+
+listen ENV["UNICORN_PATH"] + "/tmp/sockets/gitlab.socket", :backlog => 1024
+listen "/run/gitlab/gitlab.socket", :backlog => 1024
+
+working_directory ENV["GITLAB_PATH"]
+
+pid ENV["UNICORN_PATH"] + "/tmp/pids/unicorn.pid"
+
+timeout 60
+
+# combine Ruby 2.0.0dev or REE with "preload_app true" for memory savings
+# http://rubyenterpriseedition.com/faq.html#adapt_apps_for_cow
+preload_app true
+GC.respond_to?(:copy_on_write_friendly=) and
+  GC.copy_on_write_friendly = true
+
+check_client_connection false
+
+before_fork do |server, worker|
+  # the following is highly recommended for Rails + "preload_app true"
+  # as there's no need for the master process to hold a connection
+  defined?(ActiveRecord::Base) and
+    ActiveRecord::Base.connection.disconnect!
+
+  # The following is only recommended for memory/DB-constrained
+  # installations.  It is not needed if your system can house
+  # twice as many worker_processes as you have configured.
+  #
+  # This allows a new master process to incrementally
+  # phase out the old master process with SIGTTOU to avoid a
+  # thundering herd (especially in the "preload_app false" case)
+  # when doing a transparent upgrade.  The last worker spawned
+  # will then kill off the old master process with a SIGQUIT.
+  old_pid = "#{server.config[:pid]}.oldbin"
+  if old_pid != server.pid
+    begin
+      sig = (worker.nr + 1) >= server.worker_processes ? :QUIT : :TTOU
+      Process.kill(sig, File.read(old_pid).to_i)
+    rescue Errno::ENOENT, Errno::ESRCH
+    end
+  end
+
+  # Throttle the master from forking too quickly by sleeping.  Due
+  # to the implementation of standard Unix signal handlers, this
+  # helps (but does not completely) prevent identical, repeated signals
+  # from being lost when the receiving process is busy.
+  # sleep 1
+end
+
+after_fork do |server, worker|
+  # per-process listener ports for debugging/admin/migrations
+  # addr = "127.0.0.1:#{9293 + worker.nr}"
+  # server.listen(addr, :tries => -1, :delay => 5, :tcp_nopush => true)
+
+  # the following is *required* for Rails + "preload_app true",
+  defined?(ActiveRecord::Base) and
+    ActiveRecord::Base.establish_connection
+
+  # reset prometheus client, this will cause any opened metrics files to be closed
+  defined?(::Prometheus::Client.reinitialize_on_pid_change) &&
+    Prometheus::Client.reinitialize_on_pid_change
+
+  # if preload_app is true, then you may also want to check and
+  # restart any other shared sockets/descriptors such as Memcached,
+  # and Redis.  TokyoCabinet file handles are safe to reuse
+  # between any number of forked children (assuming your kernel
+  # correctly implements pread()/pwrite() system calls)
+end