# Sample verbose configuration file for Unicorn (not Rack)
#
# This configuration file documents many features of Unicorn
# that may not be needed for some applications. See
# http://unicorn.bogomips.org/examples/unicorn.conf.minimal.rb
# for a much simpler configuration file.
#
# See http://unicorn.bogomips.org/Unicorn/Configurator.html for complete
# documentation.

# Note: If you change this file in a Merge Request, please also create a
# Merge Request on https://gitlab.com/gitlab-org/omnibus-gitlab/merge_requests

# Relative URL support
# WARNING: We recommend using an FQDN to host GitLab in a root path instead
# of using a relative URL.
# Documentation: http://doc.gitlab.com/ce/install/relative_url.html
# Uncomment and customize the following line to run in a non-root path
#
# ENV['RAILS_RELATIVE_URL_ROOT'] = "/gitlab"

# Read about unicorn workers here:
# http://doc.gitlab.com/ee/install/requirements.html#unicorn-workers
#
worker_processes 3

# Since Unicorn is never exposed to outside clients, it does not need to
# run on the standard HTTP port (80), there is no reason to start Unicorn
# as root unless it's from system init scripts.
# If running the master process as root and the workers as an unprivileged
# user, do this to switch euid/egid in the workers (also chowns logs):
# user "unprivileged_user", "unprivileged_group"

# Help ensure your application will always spawn in the symlinked
# "current" directory that Capistrano sets up.
working_directory "/home/git/gitlab" # available in 0.94.0+

# Listen on both a Unix domain socket and a TCP port.
# If you are load-balancing multiple Unicorn masters, lower the backlog
# setting to e.g. 64 for faster failover.
listen "/home/git/gitlab/tmp/sockets/gitlab.socket", :backlog => 1024
listen "127.0.0.1:8080", :tcp_nopush => true

# nuke workers after 30 seconds instead of 60 seconds (the default)
#
# NOTICE: git push over http depends on this value.
# If you want to be able to push huge amount of data to git repository over http
# you will have to increase this value too.
#
# Example of output if you try to push 1GB repo to GitLab over http.
#   -> git push http://gitlab.... master
#
#   error: RPC failed; result=18, HTTP code = 200
#   fatal: The remote end hung up unexpectedly
#   fatal: The remote end hung up unexpectedly
#
# For more information see http://stackoverflow.com/a/21682112/752049
#
timeout 60

# feel free to point this anywhere accessible on the filesystem
pid "/home/git/gitlab/tmp/pids/unicorn.pid"

# By default, the Unicorn logger will write to stderr.
# Additionally, some applications/frameworks log to stderr or stdout,
# so prevent them from going to /dev/null when daemonized here:
stderr_path "/home/git/gitlab/log/unicorn.stderr.log"
stdout_path "/home/git/gitlab/log/unicorn.stdout.log"

# Save memory by sharing the application code among multiple Unicorn workers
# with "preload_app true". See:
# https://www.rubydoc.info/gems/unicorn/5.1.0/Unicorn%2FConfigurator:preload_app
# https://brandur.org/ruby-memory#copy-on-write
preload_app true

# Enable this flag to have unicorn test client connections by writing the
# beginning of the HTTP headers before calling the application.  This
# prevents calling the application for connections that have disconnected
# while queued.  This is only guaranteed to detect clients on the same
# host unicorn runs on, and unlikely to detect disconnects even on a
# fast LAN.
check_client_connection false

require_relative "/home/git/gitlab/lib/gitlab/cluster/lifecycle_events"

before_exec do |server|
  # Signal application hooks that we're about to restart
  Gitlab::Cluster::LifecycleEvents.do_master_restart
end

run_once = true

before_fork do |server, worker|
  if run_once
    # There is a difference between Puma and Unicorn:
    # - Puma calls before_fork once when booting up master process
    # - Unicorn runs before_fork whenever new work is spawned
    # To unify this behavior we call before_fork only once (we use
    # this callback for deleting Prometheus files so for our purposes
    # it makes sense to align behavior with Puma)
    run_once = false

    # Signal application hooks that we're about to fork
    Gitlab::Cluster::LifecycleEvents.do_before_fork
  end

  # 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|
  # Signal application hooks of worker start
  Gitlab::Cluster::LifecycleEvents.do_worker_start

  # 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)
end