examples/ping_pong_ns/ping_pong_ns/start_pong.py

   1 #!/usr/bin/env python
   2 #
   3 #   Copyright 2016 RIFT.IO Inc
   4 #
   5 #   Licensed under the Apache License, Version 2.0 (the "License");
   6 #   you may not use this file except in compliance with the License.
   7 #   You may obtain a copy of the License at
   8 #
   9 #       http://www.apache.org/licenses/LICENSE-2.0
  10 #
  11 #   Unless required by applicable law or agreed to in writing, software
  12 #   distributed under the License is distributed on an "AS IS" BASIS,
  13 #   WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
  14 #   See the License for the specific language governing permissions and
  15 #   limitations under the License.
  16 #
  17
  18 import argparse
  19 import signal
  20 import logging
  21
  22 import tornado
  23 import tornado.httpserver
  24
  25 from pong import (
  26     Pong,
  27     PongAdminStatusHandler,
  28     PongServerHandler,
  29     PongStatsHandler,
  30 )
  31 from util.util import (
  32     VersionHandler,
  33 )
  34
  35 logging.basicConfig(level=logging.DEBUG,
  36                     format='(%(threadName)-10s) %(name)-8s :: %(message)s',
  37 )
  38
  39 def main():
  40     log = logging.getLogger("main")
  41
  42     # parse arguments
  43     parser = argparse.ArgumentParser()
  44     parser.add_argument(
  45         "--pong-manager-port",
  46         required=False,
  47         default="18889",
  48         help="port number for pong")
  49     parser.add_argument(
  50         "--worker-count",
  51         required=False,
  52         default=5,
  53         help="ip address of pong")
  54
  55     arguments = parser.parse_args()
  56
  57     # setup application
  58     log.debug("setup application")
  59     pong_instance = Pong(arguments.worker_count)
  60     pong_application_arguments = {'pong_instance': pong_instance}
  61     pong_application = tornado.web.Application([
  62         (r"/version", VersionHandler, pong_application_arguments),
  63         (r"/api/v1/pong/stats", PongStatsHandler, pong_application_arguments),
  64         (r"/api/v1/pong/server/?([0-9a-z\.]*)", PongServerHandler, pong_application_arguments),
  65         (r"/api/v1/pong/adminstatus/([a-z]+)", PongAdminStatusHandler, pong_application_arguments)
  66     ])
  67     pong_server = tornado.httpserver.HTTPServer(
  68         pong_application)
  69
  70     # setup SIGINT handler
  71     log.debug("setup SIGINT handler")
  72     def signal_handler(signal, frame):
  73         print("") # print newline to clear user input
  74         log.info("Exiting")
  75         pong_instance.stop()
  76         pong_server.stop()
  77         log.info("Sayonara!")
  78         quit()
  79
  80     signal.signal(signal.SIGINT, signal_handler)
  81
  82     # start
  83     log.debug("pong application listening on %s" % arguments.pong_manager_port)
  84     try:
  85         pong_server.listen(arguments.pong_manager_port)
  86     except OSError:
  87         print("port %s is already is use, exiting" % arguments.ping_manager_port)
  88         return
  89     tornado.ioloop.IOLoop.instance().start()
  90
  91 if __name__ == "__main__":
  92     main()
  93
  94