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#!/usr/bin/env python
# Copyright 2013 Mellanox Technologies, Ltd
#
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
#
# http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or
# implied.
# See the License for the specific language governing permissions and
# limitations under the License.
import sys
import zmq
from networking_mlnx._i18n import _, _LE, _LI
from oslo_config import cfg
from oslo_log import log as logging
from oslo_serialization import jsonutils
from networking_mlnx.eswitchd.common import config
from networking_mlnx.eswitchd.common import constants
from networking_mlnx.eswitchd.eswitch_handler import eSwitchHandler
import networking_mlnx.eswitchd.msg_handler as message
from networking_mlnx.eswitchd.utils.helper_utils import set_conn_url
LOG = logging.getLogger(__name__)
class MlxEswitchDaemon(object):
def __init__(self):
self.max_polling_count = cfg.CONF.DAEMON.max_polling_count
self.default_timeout = cfg.CONF.DAEMON.default_timeout
fabrics = self._parse_physical_mapping()
self.eswitch_handler = eSwitchHandler(fabrics)
self.dispatcher = message.MessageDispatch(self.eswitch_handler)
def start(self):
self._init_connections()
def _parse_physical_mapping(self):
fabrics = []
fabrics_config = cfg.CONF.DAEMON.fabrics
for entry in fabrics_config:
if ':' in entry:
try:
fabric, pf = entry.split(':')
fabrics.append((fabric, pf))
except ValueError:
LOG.error(_LE("Invalid fabric: "
"'%(entry)s' - "
"Service terminated!"),
locals())
raise
else:
LOG.error(_LE("Cannot parse Fabric Mappings"))
raise Exception(_("Cannot parse Fabric Mappings"))
return fabrics
def _init_connections(self):
context = zmq.Context()
self.socket_os = context.socket(zmq.REP)
os_transport = constants.SOCKET_OS_TRANSPORT
os_port = constants.SOCKET_OS_PORT
os_addr = constants.SOCKET_OS_ADDR
self.conn_os_url = set_conn_url(os_transport, os_addr, os_port)
self.socket_os.bind(self.conn_os_url)
self.poller = zmq.Poller()
self.poller.register(self.socket_os, zmq.POLLIN)
def _handle_msg(self):
data = None
msg = self.socket_os.recv()
sender = self.socket_os
if msg:
data = jsonutils.loads(msg)
msg = None
if data:
try:
result = self.dispatcher.handle_msg(data)
msg = jsonutils.dumps(result)
except Exception as e:
LOG.exception(_LE("Exception during message handling - %s"), e)
msg = str(e)
sender.send(msg)
def daemon_loop(self):
LOG.info(_LI("Daemon Started!"))
polling_counter = 0
while True:
self._handle_msg()
if polling_counter == self.max_polling_count:
LOG.debug("Resync devices")
# self.eswitch_handler.sync_devices()
polling_counter = 0
else:
polling_counter += 1
def main():
config.init(sys.argv[1:])
config.setup_logging()
try:
daemon = MlxEswitchDaemon()
daemon.start()
except Exception as e:
LOG.exception(_LE("Failed to start EswitchDaemon "
"- Daemon terminated! %s"), e)
sys.exit(1)
daemon.daemon_loop()
if __name__ == '__main__':
main()
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