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calibre-web/cps/server.py

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#!/usr/bin/env python
# -*- coding: utf-8 -*-
from socket import error as SocketError
import sys
import os
import signal
import web
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
class server:
wsgiserver = None
restart= False
def __init__(self):
signal.signal(signal.SIGINT, self.killServer)
signal.signal(signal.SIGTERM, self.killServer)
def start_gevent(self):
try:
ssl_args = dict()
if web.ub.config.get_config_certfile() and web.ub.config.get_config_keyfile():
ssl_args = {"certfile": web.ub.config.get_config_certfile(),
"keyfile": web.ub.config.get_config_keyfile()}
if os.name == 'nt':
self.wsgiserver= WSGIServer(('0.0.0.0', web.ub.config.config_port), web.app, spawn=Pool(), **ssl_args)
else:
self.wsgiserver = WSGIServer(('', web.ub.config.config_port), web.app, spawn=Pool(), **ssl_args)
self.wsgiserver.serve_forever()
except SocketError:
web.app.logger.info('Unable to listen on \'\', trying on IPv4 only...')
self.wsgiserver = WSGIServer(('0.0.0.0', web.ub.config.config_port), web.app, spawn=Pool(), **ssl_args)
self.wsgiserver.serve_forever()
except Exception:
web.app.logger.info("Unknown error while starting gevent")
def startServer(self):
if gevent_present:
web.app.logger.info('Starting Gevent server')
# leave subprocess out to allow forking for fetchers and processors
self.start_gevent()
else:
web.app.logger.info('Starting Tornado server')
if web.ub.config.get_config_certfile() and web.ub.config.get_config_keyfile():
ssl={"certfile": web.ub.config.get_config_certfile(),
"keyfile": web.ub.config.get_config_keyfile()}
else:
ssl=None
# Max Buffersize set to 200MB
http_server = HTTPServer(WSGIContainer(web.app),
max_buffer_size = 209700000,
ssl_options=ssl)
http_server.listen(web.ub.config.config_port)
self.wsgiserver=IOLoop.instance()
self.wsgiserver.start()
# wait for stop signal
self.wsgiserver.close(True)
if self.restart == True:
web.app.logger.info("Performing restart of Calibre-Web")
web.helper.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:
web.app.logger.info("Performing shutdown of Calibre-Web")
web.helper.global_WorkerThread.stop()
sys.exit(0)
def setRestartTyp(self,starttyp):
self.restart=starttyp
def killServer(self, signum, frame):
self.stopServer()
def stopServer(self):
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}
# Start Instance of Server
Server=server()