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# Copyright 2016 Mirantis, Inc.
#
# 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 logging
from oslo_messaging._drivers.zmq_driver import zmq_async
from oslo_messaging._drivers.zmq_driver import zmq_socket
zmq = zmq_async.import_zmq()
LOG = logging.getLogger(__name__)
class SocketsManager(object):
def __init__(self, conf, matchmaker, socket_type):
self.conf = conf
self.matchmaker = matchmaker
self.socket_type = socket_type
self.zmq_context = zmq.Context()
self.socket_to_publishers = None
self.socket_to_routers = None
self.sockets = {}
def get_socket(self, immediate=True):
return zmq_socket.ZmqSocket(self.conf, self.zmq_context,
self.socket_type, immediate=immediate)
def get_cached_socket(self, target_key, hosts=None, immediate=True):
hosts = [] if hosts is None else hosts
socket = self.sockets.get(target_key, None)
if socket is None:
LOG.debug("CREATING NEW socket for target_key %s " % target_key)
socket = zmq_socket.ZmqSocket(self.conf, self.zmq_context,
self.socket_type,
immediate=immediate)
self.sockets[target_key] = socket
for host in hosts:
socket.connect_to_host(host)
LOG.debug("Target key: %s socket:%s" % (target_key,
socket.handle.identity))
return socket
def get_socket_to_publishers(self, identity=None):
if self.socket_to_publishers is not None:
return self.socket_to_publishers
self.socket_to_publishers = zmq_socket.ZmqSocket(
self.conf, self.zmq_context, self.socket_type,
immediate=self.conf.oslo_messaging_zmq.zmq_immediate,
identity=identity)
publishers = self.matchmaker.get_publishers()
for pub_address, fe_router_address in publishers:
self.socket_to_publishers.connect_to_host(fe_router_address)
return self.socket_to_publishers
def get_socket_to_routers(self, identity=None):
if self.socket_to_routers is not None:
return self.socket_to_routers
self.socket_to_routers = zmq_socket.ZmqSocket(
self.conf, self.zmq_context, self.socket_type,
immediate=self.conf.oslo_messaging_zmq.zmq_immediate,
identity=identity)
routers = self.matchmaker.get_routers()
for be_router_address in routers:
self.socket_to_routers.connect_to_host(be_router_address)
return self.socket_to_routers
def cleanup(self):
if self.socket_to_publishers:
self.socket_to_publishers.close()
if self.socket_to_routers:
self.socket_to_routers.close()
for socket in self.sockets.values():
socket.close()
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