1 # -*- encoding: binary -*-
9 Rainbows::Const::RACK_DEFAULTS["SERVER_SOFTWARE"] = "Zbatery #{VERSION}"
11 # we don't actually fork workers, but allow using the
12 # {before,after}_fork hooks found in Unicorn/Rainbows!
14 FORK_HOOK = lambda { |_,_| }
18 # override stuff we don't need or can't use portably
22 # master == worker in our case
23 def init_worker_process(worker)
24 after_fork.call(self, worker)
25 worker.user(*user) if user.kind_of?(Array) && ! worker.switched
26 build_app! unless preload_app
27 Rainbows::Response.setup
28 Rainbows::MaxBody.setup
29 Rainbows::ProcessClient.const_set(:APP, @app)
31 logger.info "Zbatery #@use worker_connections=#@worker_connections"
35 # we can't/don't need to do the fchmod heartbeat Unicorn/Rainbows! does
42 # only used if no concurrency model is specified
43 def worker_loop(worker)
44 init_worker_process(worker)
46 ret = IO.select(LISTENERS, nil, nil, nil) and
48 io = sock.kgio_tryaccept and process_client(io)
51 rescue Errno::EBADF, TypeError
54 Rainbows::Error.listen_loop(e)
55 end while Rainbows.alive
59 def maintain_worker_count; end
60 def spawn_missing_workers; end
61 def init_self_pipe!; end
63 # can't just do a graceful exit if reopening logs fails, so we just
66 logger.info "reopening logs"
67 Unicorn::Util.reopen_logs
68 logger.info "done reopening logs"
70 logger.error "failed reopening logs #{e.message}"
73 def trap_deferred(sig)
78 at_exit { unlink_pid_safe(pid) if pid }
79 trap(:INT) { exit!(0) }
80 trap(:TERM) { exit!(0) }
81 trap(:QUIT) { Thread.new { stop } }
82 trap(:USR1) { Thread.new { reopen_logs } }
83 trap(:USR2) { Thread.new { reexec } }
84 trap(:HUP) { Thread.new { reexec; stop } }
85 trap(:CHLD, "DEFAULT")
87 # technically feasible in some cases, just not sanely supportable:
88 %w(TTIN TTOU WINCH).each do |sig|
90 Thread.new { logger.info("SIG#{sig} is not handled by Zbatery") }
95 ready_pipe.syswrite($$.to_s)
99 extend(Rainbows.const_get(@use))
100 worker = Worker.new(0)
101 before_fork.call(self, worker)
102 worker_loop(worker) # runs forever
105 def stop(graceful = true)
107 graceful ? exit : exit!(0)
112 hook == Zbatery::FORK_HOOK or
113 logger.warn "calling before_fork without forking"
119 hook == Zbatery::FORK_HOOK or
120 logger.warn "calling after_fork without having forked"
126 Unicorn::Configurator::DEFAULTS[:before_fork] =
127 Unicorn::Configurator::DEFAULTS[:after_fork] = Zbatery::FORK_HOOK