diff options
Diffstat (limited to '.venv/lib/python3.12/site-packages/gunicorn/workers/sync.py')
| -rw-r--r-- | .venv/lib/python3.12/site-packages/gunicorn/workers/sync.py | 210 |
1 files changed, 210 insertions, 0 deletions
diff --git a/.venv/lib/python3.12/site-packages/gunicorn/workers/sync.py b/.venv/lib/python3.12/site-packages/gunicorn/workers/sync.py new file mode 100644 index 00000000..39a209f0 --- /dev/null +++ b/.venv/lib/python3.12/site-packages/gunicorn/workers/sync.py @@ -0,0 +1,210 @@ +# -*- coding: utf-8 - +# +# This file is part of gunicorn released under the MIT license. +# See the NOTICE for more information. +# + +from datetime import datetime +import errno +import os +import select +import socket +import ssl +import sys + +from gunicorn import http +from gunicorn.http import wsgi +from gunicorn import sock +from gunicorn import util +from gunicorn.workers import base + + +class StopWaiting(Exception): + """ exception raised to stop waiting for a connection """ + + +class SyncWorker(base.Worker): + + def accept(self, listener): + client, addr = listener.accept() + client.setblocking(1) + util.close_on_exec(client) + self.handle(listener, client, addr) + + def wait(self, timeout): + try: + self.notify() + ret = select.select(self.wait_fds, [], [], timeout) + if ret[0]: + if self.PIPE[0] in ret[0]: + os.read(self.PIPE[0], 1) + return ret[0] + + except select.error as e: + if e.args[0] == errno.EINTR: + return self.sockets + if e.args[0] == errno.EBADF: + if self.nr < 0: + return self.sockets + else: + raise StopWaiting + raise + + def is_parent_alive(self): + # If our parent changed then we shut down. + if self.ppid != os.getppid(): + self.log.info("Parent changed, shutting down: %s", self) + return False + return True + + def run_for_one(self, timeout): + listener = self.sockets[0] + while self.alive: + self.notify() + + # Accept a connection. If we get an error telling us + # that no connection is waiting we fall down to the + # select which is where we'll wait for a bit for new + # workers to come give us some love. + try: + self.accept(listener) + # Keep processing clients until no one is waiting. This + # prevents the need to select() for every client that we + # process. + continue + + except EnvironmentError as e: + if e.errno not in (errno.EAGAIN, errno.ECONNABORTED, + errno.EWOULDBLOCK): + raise + + if not self.is_parent_alive(): + return + + try: + self.wait(timeout) + except StopWaiting: + return + + def run_for_multiple(self, timeout): + while self.alive: + self.notify() + + try: + ready = self.wait(timeout) + except StopWaiting: + return + + if ready is not None: + for listener in ready: + if listener == self.PIPE[0]: + continue + + try: + self.accept(listener) + except EnvironmentError as e: + if e.errno not in (errno.EAGAIN, errno.ECONNABORTED, + errno.EWOULDBLOCK): + raise + + if not self.is_parent_alive(): + return + + def run(self): + # if no timeout is given the worker will never wait and will + # use the CPU for nothing. This minimal timeout prevent it. + timeout = self.timeout or 0.5 + + # self.socket appears to lose its blocking status after + # we fork in the arbiter. Reset it here. + for s in self.sockets: + s.setblocking(0) + + if len(self.sockets) > 1: + self.run_for_multiple(timeout) + else: + self.run_for_one(timeout) + + def handle(self, listener, client, addr): + req = None + try: + if self.cfg.is_ssl: + client = sock.ssl_wrap_socket(client, self.cfg) + parser = http.RequestParser(self.cfg, client, addr) + req = next(parser) + self.handle_request(listener, req, client, addr) + except http.errors.NoMoreData as e: + self.log.debug("Ignored premature client disconnection. %s", e) + except StopIteration as e: + self.log.debug("Closing connection. %s", e) + except ssl.SSLError as e: + if e.args[0] == ssl.SSL_ERROR_EOF: + self.log.debug("ssl connection closed") + client.close() + else: + self.log.debug("Error processing SSL request.") + self.handle_error(req, client, addr, e) + except EnvironmentError as e: + if e.errno not in (errno.EPIPE, errno.ECONNRESET, errno.ENOTCONN): + self.log.exception("Socket error processing request.") + else: + if e.errno == errno.ECONNRESET: + self.log.debug("Ignoring connection reset") + elif e.errno == errno.ENOTCONN: + self.log.debug("Ignoring socket not connected") + else: + self.log.debug("Ignoring EPIPE") + except Exception as e: + self.handle_error(req, client, addr, e) + finally: + util.close(client) + + def handle_request(self, listener, req, client, addr): + environ = {} + resp = None + try: + self.cfg.pre_request(self, req) + request_start = datetime.now() + resp, environ = wsgi.create(req, client, addr, + listener.getsockname(), self.cfg) + # Force the connection closed until someone shows + # a buffering proxy that supports Keep-Alive to + # the backend. + resp.force_close() + self.nr += 1 + if self.nr >= self.max_requests: + self.log.info("Autorestarting worker after current request.") + self.alive = False + respiter = self.wsgi(environ, resp.start_response) + try: + if isinstance(respiter, environ['wsgi.file_wrapper']): + resp.write_file(respiter) + else: + for item in respiter: + resp.write(item) + resp.close() + finally: + request_time = datetime.now() - request_start + self.log.access(resp, req, environ, request_time) + if hasattr(respiter, "close"): + respiter.close() + except EnvironmentError: + # pass to next try-except level + util.reraise(*sys.exc_info()) + except Exception: + if resp and resp.headers_sent: + # If the requests have already been sent, we should close the + # connection to indicate the error. + self.log.exception("Error handling request") + try: + client.shutdown(socket.SHUT_RDWR) + client.close() + except EnvironmentError: + pass + raise StopIteration() + raise + finally: + try: + self.cfg.post_request(self, req, environ, resp) + except Exception: + self.log.exception("Exception in post_request hook") |