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| | # -*- encoding: binary -*-
module Rainbows
# base class for Rainbows concurrency models, this is currently
# used by ThreadSpawn and ThreadPool models
module Base
include Unicorn
include Rainbows::Const
G = Rainbows::G
def init_worker_process(worker)
super(worker)
MaxBody.setup
G.tmp = worker.tmp
# avoid spurious wakeups and blocking-accept() with 1.8 green threads
if RUBY_VERSION.to_f < 1.9
require "io/nonblock"
HttpServer::LISTENERS.each { |l| l.nonblock = true }
end
# we're don't use the self-pipe mechanism in the Rainbows! worker
# since we don't defer reopening logs
HttpServer::SELF_PIPE.each { |x| x.close }.clear
trap(:USR1) { reopen_worker_logs(worker.nr) }
trap(:QUIT) { G.quit! }
[:TERM, :INT].each { |sig| trap(sig) { exit!(0) } } # instant shutdown
logger.info "Rainbows! #@use worker_connections=#@worker_connections"
end
if IO.respond_to?(:copy_stream)
def write_body(client, body)
if body.respond_to?(:to_path)
io = body.respond_to?(:to_io) ? body.to_io : body.to_path
IO.copy_stream(io, client)
else
body.each { |chunk| client.write(chunk) }
end
ensure
body.respond_to?(:close) and body.close
end
else
def write_body(client, body)
body.each { |chunk| client.write(chunk) }
ensure
body.respond_to?(:close) and body.close
end
end
module_function :write_body
# once a client is accepted, it is processed in its entirety here
# in 3 easy steps: read request, call app, write app response
# this is used by synchronous concurrency models
# Base, ThreadSpawn, ThreadPool
def process_client(client)
buf = client.readpartial(CHUNK_SIZE) # accept filters protect us here
hp = HttpParser.new
env = {}
alive = true
remote_addr = Rainbows.addr(client)
begin # loop
while ! hp.headers(env, buf)
IO.select([client], nil, nil, G.kato) or return
buf << client.readpartial(CHUNK_SIZE)
end
env[CLIENT_IO] = client
env[RACK_INPUT] = 0 == hp.content_length ?
HttpRequest::NULL_IO : TeeInput.new(client, env, hp, buf)
env[REMOTE_ADDR] = remote_addr
status, headers, body = app.call(env.update(RACK_DEFAULTS))
if 100 == status.to_i
client.write(EXPECT_100_RESPONSE)
env.delete(HTTP_EXPECT)
status, headers, body = app.call(env)
end
alive = hp.keepalive? && G.alive
if hp.headers?
out = [ alive ? CONN_ALIVE : CONN_CLOSE ]
client.write(HttpResponse.header_string(status, headers, out))
end
write_body(client, body)
end while alive and hp.reset.nil? and env.clear
# if we get any error, try to write something back to the client
# assuming we haven't closed the socket, but don't get hung up
# if the socket is already closed or broken. We'll always ensure
# the socket is closed at the end of this function
rescue => e
Error.write(client, e)
ensure
client.close unless client.closed?
end
def self.included(klass)
klass.const_set :LISTENERS, HttpServer::LISTENERS
klass.const_set :G, Rainbows::G
end
end
end
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