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parallel-library/cps/server.py

159 lines
5.4 KiB
Python

#!/usr/bin/env python
# -*- coding: utf-8 -*-
# This file is part of the Calibre-Web (https://github.com/janeczku/calibre-web)
# Copyright (C) 2012-2019 janeczku, OzzieIsaacs, andrerfcsantos, idalin
#
# This program is free software: you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation, either version 3 of the License, or
# (at your option) any later version.
#
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with this program. If not, see <http://www.gnu.org/licenses/>.
from __future__ import division, print_function, unicode_literals
import sys
import os
import signal
import socket
try:
from gevent.pywsgi import WSGIServer
from gevent.pool import Pool
from gevent import __version__ as geventVersion
gevent_present = True
except ImportError:
from tornado.wsgi import WSGIContainer
from tornado.httpserver import HTTPServer
from tornado.ioloop import IOLoop
from tornado import version as tornadoVersion
gevent_present = False
from . import logger, config, global_WorkerThread
log = logger.create()
class server:
wsgiserver = None
restart = False
app = None
def __init__(self):
signal.signal(signal.SIGINT, self.killServer)
signal.signal(signal.SIGTERM, self.killServer)
def init_app(self, application):
self.app = application
self.port = config.config_port
self.ssl_args = None
certfile_path = config.get_config_certfile()
keyfile_path = config.get_config_keyfile()
if certfile_path and keyfile_path:
if os.path.isfile(certfile_path) and os.path.isfile(keyfile_path):
self.ssl_args = {"certfile": certfile_path,
"keyfile": keyfile_path}
else:
log.warning('The specified paths for the ssl certificate file and/or key file seem to be broken. Ignoring ssl.')
log.warning('Cert path: %s', certfile_path)
log.warning('Key path: %s', keyfile_path)
def _make_gevent_socket(self):
if os.name == 'nt':
return ('0.0.0.0', self.port)
try:
s = WSGIServer.get_listener(('', self.port), family=socket.AF_INET6)
except socket.error as ex:
log.error('%s', ex)
log.warning('Unable to listen on \'\', trying on IPv4 only...')
s = WSGIServer.get_listener(('', self.port), family=socket.AF_INET)
log.debug("%r %r", s._sock, s._sock.getsockname())
return s
def start_gevent(self):
ssl_args = self.ssl_args or {}
log.info('Starting Gevent server')
try:
sock = self._make_gevent_socket()
self.wsgiserver = WSGIServer(sock, self.app, spawn=Pool(), **ssl_args)
self.wsgiserver.serve_forever()
except (OSError, socket.error) as e:
log.info("Error starting server: %s", e.strerror)
print("Error starting server: %s" % e.strerror)
global_WorkerThread.stop()
sys.exit(1)
except Exception:
log.exception("Unknown error while starting gevent")
def start_tornado(self):
log.info('Starting Tornado server')
try:
# Max Buffersize set to 200MB
http_server = HTTPServer(WSGIContainer(self.app),
max_buffer_size = 209700000,
ssl_options=self.ssl_args)
http_server.listen(self.port)
self.wsgiserver=IOLoop.instance()
self.wsgiserver.start()
# wait for stop signal
self.wsgiserver.close(True)
except socket.error as err:
log.exception("Error starting tornado server")
print("Error starting server: %s" % err.strerror)
global_WorkerThread.stop()
sys.exit(1)
def startServer(self):
if gevent_present:
# leave subprocess out to allow forking for fetchers and processors
self.start_gevent()
else:
self.start_tornado()
if self.restart is True:
log.info("Performing restart of Calibre-Web")
global_WorkerThread.stop()
if os.name == 'nt':
arguments = ["\"" + sys.executable + "\""]
for e in sys.argv:
arguments.append("\"" + e + "\"")
os.execv(sys.executable, arguments)
else:
os.execl(sys.executable, sys.executable, *sys.argv)
else:
log.info("Performing shutdown of Calibre-Web")
global_WorkerThread.stop()
sys.exit(0)
def setRestartTyp(self,starttyp):
self.restart = starttyp
def killServer(self, signum, frame):
self.stopServer()
def stopServer(self):
if self.wsgiserver:
if gevent_present:
self.wsgiserver.close()
else:
self.wsgiserver.add_callback(self.wsgiserver.stop)
@staticmethod
def getNameVersion():
if gevent_present:
return {'Gevent': 'v' + geventVersion}
else:
return {'Tornado': 'v' + tornadoVersion}