1 # -*- encoding: binary -*-
11 # runs the Zbatery HttpServer with +app+ and +options+ and does
12 # not return until the server has exited.
13 def run(app, options = {})
14 Rainbows::HttpServer.new(app, options).start.join
18 Rainbows::Const::RACK_DEFAULTS["SERVER_SOFTWARE"] = "Zbatery #{VERSION}"
20 # we don't actually fork workers, but allow using the
21 # {before,after}_fork hooks found in Unicorn/Rainbows!
23 FORK_HOOK = lambda { |_,_| }
27 # override stuff we don't need or can't use portably
31 # master == worker in our case
32 def init_worker_process(worker)
33 after_fork.call(self, worker)
34 worker.user(*user) if user.kind_of?(Array) && ! worker.switched
35 build_app! unless preload_app
36 Rainbows::Response.setup(self.class)
37 Rainbows::MaxBody.setup
38 Rainbows::ProcessClient.const_set(:APP, @app)
40 logger.info "Zbatery #@use worker_connections=#@worker_connections"
44 # we can't/don't need to do the fchmod heartbeat Unicorn/Rainbows! does
51 # this class is only used to avoid breaking Unicorn user switching
57 # only used if no concurrency model is specified
58 def worker_loop(worker)
59 init_worker_process(worker)
61 ret = IO.select(LISTENERS, nil, nil, nil) and
63 io = sock.kgio_tryaccept and process_client(io)
66 rescue Errno::EBADF, TypeError
69 Rainbows::Error.listen_loop(e)
70 end while Rainbows.alive
74 def maintain_worker_count; end
75 def init_self_pipe!; end
77 # can't just do a graceful exit if reopening logs fails, so we just
80 logger.info "reopening logs"
81 Unicorn::Util.reopen_logs
82 logger.info "done reopening logs"
84 logger.error "failed reopening logs #{e.message}"
87 def trap_deferred(sig)
92 trap(:INT) { stop(false) }
93 trap(:TERM) { stop(false) }
95 trap(:USR1) { reopen_logs }
96 trap(:USR2) { reexec }
97 trap(:HUP) { reexec; stop }
99 # technically feasible in some cases, just not sanely supportable:
100 %w(TTIN TTOU WINCH).each do |sig|
101 trap(sig) { logger.info "SIG#{sig} is not handled by Zbatery" }
105 ready_pipe.syswrite($$.to_s)
107 self.ready_pipe = nil
109 extend(Rainbows.const_get(@use))
110 worker = Worker.new(0, DeadIO.new)
111 before_fork.call(self, worker)
112 worker_loop(worker) # runs forever
115 def stop(graceful = true)
117 exit!(0) unless graceful
122 hook == Zbatery::FORK_HOOK or
123 logger.warn "calling before_fork without forking"
129 hook == Zbatery::FORK_HOOK or
130 logger.warn "calling after_fork without having forked"
136 Unicorn::Configurator::DEFAULTS[:before_fork] =
137 Unicorn::Configurator::DEFAULTS[:after_fork] = Zbatery::FORK_HOOK