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https://github.com/frappe/gunicorn.git
synced 2026-01-14 11:09:11 +08:00
add missing gthreads worker
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benoitc
parent
5f0a329b58
commit
67866f275f
@ -17,7 +17,7 @@ class PollerBase(object):
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def addfd(self, fd, mode, repeat=True):
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""" add a filed escriptor to poll.
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Parameters:
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fdevent Parameters:
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* fd : file descriptor or file object
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* mode: 'r' to wait for read events, 'w' to wait for write events
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301
gunicorn/workers/gthread.py
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301
gunicorn/workers/gthread.py
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@ -0,0 +1,301 @@
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# -*- coding: utf-8 -
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#
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# This file is part of gunicorn released under the MIT license.
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# See the NOTICE for more information.
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# design:
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# a threaded worker accepts connections in the main loop, accepted
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# connections are are added to the thread pool as a connection job. On
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# keepalive connections are put back in the loop waiting for an event.
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# If no event happen after the keep alive timeout, the connectoin is
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# closed.
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import concurrent.futures as futures
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from datetime import datetime
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import errno
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import heapq
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import os
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import socket
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import ssl
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import sys
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import time
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from .. import http
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from ..http import wsgi
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from .. import fdevents
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from .. import util
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from . import base
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from .. import six
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class TConn():
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def __init__(self, worker, listener, sock, addr):
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self.listener = listener
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self.sock = sock
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self.addr = addr
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self.when = fs.timeout
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# set the timeout
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self.timeout = time.time() + worker.cfg.keepalive
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def __lt__(self, other):
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return self.timeout < other.timeout
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__cmp__ = __lt__
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class ThreadWorker(base.worker):
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def __init__(self, *args, **kwargs):
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super(ThreadWorker, self).__init__(*args, **kwargs)
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# initialise the pool
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self.tpool = futures.ThreadPoolExecutor(max_workers=self.cfg.threads)
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self.poller = fdevents.DefaultPoller()
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self.futures = set()
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self._heap = []
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self.keepalived = {}
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def _wrap(self, fs, listener, client, addr):
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fs.listener = listener
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fs.sock = client
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fs.addr = addr
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def run(self):
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for s in self.sockets:
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s.setblocking(False)
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self.poller.add_fd(s, 'r')
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listeners = dict([(s.fileno(), s) for s in self.sockets])
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while self.alive:
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# If our parent changed then we shut down.
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if self.ppid != os.getppid():
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self.log.info("Parent changed, shutting down: %s", self)
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return
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# notify the arbiter we are alive
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self.notify()
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events = self.poller.wait(0.1)
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if events:
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for (fd, mode) in events:
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fs = None
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client = None
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if fd in listeners:
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# start to accept connections
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try:
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client, addr = sock.accept()
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# add a job to the pool
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fs = self.tpool.submit(self.handle, listeners[fd],
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client, addr, False)
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self._wrap_future(fs, listemers[fd],
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client, addr)
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except socket.error as e:
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if e.args[0] not in (errno.EAGAIN,
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errno.ECONNABORTED, errno.EWOULDBLOCK):
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raise
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else:
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# keepalive connection
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if fd in self.keepalived:
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# get the client connection
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client = self.keepalived[fd]
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# remove it from the heap
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try:
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del self._heap[operator.indexOf(self._heap, t)]
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except (KeyError, IndexError):
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pass
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# add a job to the pool
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fs = self.tpool.submit(self.handle, client.listener,
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client.sock, client.addr, True)
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self._wrap_future(fs, client.listener,
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client.sock, client.addr)
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if fs is not None:
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self.futures.add(fs)
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# handle jobs, we give a chance to all jobs to be executed.
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if self.futures:
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res = futures.wait([fs for fs in self.futures],
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timeout=self.timeout,
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return_when=futures.ALL_COMPLETED)
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for fs in res:
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# remove the future from our list
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self.futures.remove(fs)
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try:
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result = fs.result()
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# if the connection should be kept alived add it
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# to the eventloop and record it
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if result and result is not None:
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# flag the socket as non blocked
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fs.sock.setblocking(0)
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util.close_on_exec(fs.sock)
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tconn = TConn(self, fs.listener, fs.sock,
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fs.addr)
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# register the connection
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heapq.heappush(self._heap, tconn)
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self.keepalived[fs.sock.fileno()] = tconn
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# add the socket to the event loop
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self.poller.add_fd(fs.sock.fileno(), 'r')
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else:
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# at this point the connection should be
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# closed but we make sure it is.
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util.close(fs.sock)
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except:
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# an exception happened, make sure to close the
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# socket.
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util.close(fs.sock)
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# hanle keepalive timeouts
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now = time.time()
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while True:
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if not len(self._heap):
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continue
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conn = heapq.heappop(self._heap)
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delta = t.timeout = now
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if delta > 0:
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heapq.heappush(self._heap, t)
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break
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else:
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# remove the socket from the poller
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self.poller.del_fd(conn.sock.fileno(), 'r')
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# close the socket
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conn.sock.close()
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# shutdown the pool
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self.tpool.shutdown(False)
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# wait for the workers
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futures.wait([fs for fs in self.futures],
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timeout=self.cfg.graceful_timeout)
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# if we have still fures running, try to close them
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for fs in self.futures:
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sock = fs.sock
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# the future is not running, cancel it
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if not fs.done() and not fs.running():
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fs.cancel()
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# make sure we close the sockets after the graceful timeout
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util.close(sock)
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def handle(self, listener, client, addr, keepalived):
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keepalive = False
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try:
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# wrap the connection
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if not keepalived and self.cfg.is_ssl:
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client = ssl.wrap_socket(client, server_side=True,
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**self.cfg.ssl_options)
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client.setblocking(1)
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util.close_on_exec(client)
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parser = http.RequestParser(self.cfg, sock)
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req = six.next(parser)
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# handle the request
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keepalive = self.handle_request(listener, req, client, addr)
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except http.errors.NoMoreData as e:
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self.log.debug("Ignored premature client disconnection. %s", e)
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except StopIteration as e:
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self.log.debug("Closing connection. %s", e)
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except ssl.SSLError as e:
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if e.args[0] == ssl.SSL_ERROR_EOF:
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self.log.debug("ssl connection closed")
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client.close()
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else:
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self.log.debug("Error processing SSL request.")
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self.handle_error(req, client, addr, e)
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except socket.error as e:
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if e.args[0] not in (errno.EPIPE, errno.ECONNRESET):
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self.log.exception("Socket error processing request.")
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else:
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if e.args[0] == errno.ECONNRESET:
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self.log.debug("Ignoring connection reset")
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else:
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self.log.debug("Ignoring EPIPE")
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except Exception as e:
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self.handle_error(req, client, addr, e)
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finally:
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if not keepalive:
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util.close(client)
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return keepalive
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def handle_request(self, listener, req, client, addr):
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environ = {}
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resp = None
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try:
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self.cfg.pre_request(self, req)
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request_start = datetime.now()
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resp, environ = wsgi.create(req, client, addr,
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listener.getsockname(), self.cfg)
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environ["wsgi.multithread"] = True
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self.nr += 1
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if self.nr >= self.max_requests:
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self.log.info("Autorestarting worker after current request.")
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self.alive = False
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if not self.cfg.keepalive:
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resp.force_close()
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respiter = self.wsgi(environ, resp.start_response)
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try:
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if isinstance(respiter, environ['wsgi.file_wrapper']):
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resp.write_file(respiter)
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else:
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for item in respiter:
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resp.write(item)
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resp.close()
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request_time = datetime.now() - request_start
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self.log.access(resp, req, environ, request_time)
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finally:
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if hasattr(respiter, "close"):
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respiter.close()
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if resp.should_close():
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raise StopIteration()
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except socket.error:
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exc_info = sys.exc_info()
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# pass to next try-except level
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six.reraise(exc_info[0], exc_info[1], exc_info[2])
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except Exception:
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if resp and resp.headers_sent:
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# If the requests have already been sent, we should close the
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# connection to indicate the error.
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self.log.exception("Error handling request")
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try:
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client.shutdown(socket.SHUT_RDWR)
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client.close()
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except socket.error:
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pass
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raise StopIteration()
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raise
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finally:
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try:
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self.cfg.post_request(self, req, environ, resp)
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except Exception:
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self.log.exception("Exception in post_request hook")
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return True
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