lib/rainbows/base.rb

   1 # -*- encoding: binary -*-
   2
   3 # base class for \Rainbows! concurrency models, this is currently used by
   4 # ThreadSpawn and ThreadPool models.  Base is also its own
   5 # (non-)concurrency model which is basically Unicorn-with-keepalive, and
   6 # not intended for production use, as keepalive with a pure prefork
   7 # concurrency model is extremely expensive.
   8 module Rainbows::Base
   9   # :stopdoc:
  10
  11   # this method is called by all current concurrency models
  12   def init_worker_process(worker) # :nodoc:
  13     super(worker)
  14     Rainbows::Response.setup(self.class)
  15     Rainbows::MaxBody.setup
  16     Rainbows.worker = worker
  17
  18     # we're don't use the self-pipe mechanism in the Rainbows! worker
  19     # since we don't defer reopening logs
  20     Rainbows::HttpServer::SELF_PIPE.each { |x| x.close }.clear
  21     trap(:USR1) { reopen_worker_logs(worker.nr) }
  22     trap(:QUIT) { Rainbows.quit! }
  23     [:TERM, :INT].each { |sig| trap(sig) { exit!(0) } } # instant shutdown
  24     Rainbows::ProcessClient.const_set(:APP, Rainbows.server.app)
  25     logger.info "Rainbows! #@use worker_connections=#@worker_connections"
  26   end
  27
  28   def process_client(client)
  29     client.process_loop
  30   end
  31
  32   def self.included(klass) # :nodoc:
  33     klass.const_set :LISTENERS, Rainbows::HttpServer::LISTENERS
  34   end
  35
  36   def reopen_worker_logs(worker_nr)
  37     logger.info "worker=#{worker_nr} reopening logs..."
  38     Unicorn::Util.reopen_logs
  39     logger.info "worker=#{worker_nr} done reopening logs"
  40     rescue
  41       Rainbows.quit! # let the master reopen and refork us
  42   end
  43   # :startdoc:
  44 end