8d2a8933ce
Now thw flake8 did not check W503 and E402 errors, 1.E402 module level import not at top of file 2.W503 line break before binary operator This patch fix it Change-Id: Ieae4f2f23d2aa0fd1e19ef770c2f1ce6aef30f79
104 lines
3.2 KiB
Python
104 lines
3.2 KiB
Python
# Copyright (c) 2013 Mirantis Inc.
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#
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# Licensed under the Apache License, Version 2.0 (the "License");
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# you may not use this file except in compliance with the License.
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# You may obtain a copy of the License at
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#
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# http://www.apache.org/licenses/LICENSE-2.0
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#
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# Unless required by applicable law or agreed to in writing, software
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# distributed under the License is distributed on an "AS IS" BASIS,
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# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or
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# implied.
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# See the License for the specific language governing permissions and
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# limitations under the License.
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import ssl as ssl_module
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from eventlet import patcher
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from oslo_serialization import jsonutils
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from subscription import Subscription
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kombu = patcher.import_patched('kombu')
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class MqClient(object):
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def __init__(self, login, password, host, port, virtual_host,
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ssl=False, ca_certs=None):
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ssl_params = None
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if ssl is True:
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ssl_params = {
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'ca_certs': ca_certs,
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'cert_reqs': ssl_module.CERT_REQUIRED
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}
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self._connection = kombu.Connection(
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'amqp://{0}:{1}@{2}:{3}/{4}'.format(
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login,
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password,
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host,
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port,
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virtual_host
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), ssl=ssl_params
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)
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self._channel = None
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self._connected = False
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def __enter__(self):
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self.connect()
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return self
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def __exit__(self, exc_type, exc_val, exc_tb):
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self.close()
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return False
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def connect(self):
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self._connection.connect()
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self._channel = self._connection.channel()
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self._connected = True
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def close(self):
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self._connection.close()
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self._connected = False
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def declare(self, queue, exchange='', enable_ha=False, ttl=0):
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if not self._connected:
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raise RuntimeError('Not connected to RabbitMQ')
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queue_arguments = {}
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if enable_ha is True:
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# To use mirrored queues feature in RabbitMQ 2.x
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# we need to declare this policy on the queue itself.
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#
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# Warning: this option has no effect on RabbitMQ 3.X,
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# to enable mirrored queues feature in RabbitMQ 3.X, please
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# configure RabbitMQ.
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queue_arguments['x-ha-policy'] = 'all'
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if ttl > 0:
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queue_arguments['x-expires'] = ttl
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exchange = kombu.Exchange(exchange, type='direct', durable=True)
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queue = kombu.Queue(queue, exchange, queue, durable=True,
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queue_arguments=queue_arguments)
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bound_queue = queue(self._connection)
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bound_queue.declare()
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def send(self, message, key, exchange=''):
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if not self._connected:
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raise RuntimeError('Not connected to RabbitMQ')
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producer = kombu.Producer(self._connection)
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producer.publish(
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exchange=str(exchange),
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routing_key=str(key),
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body=jsonutils.dumps(message.body),
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message_id=str(message.id)
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)
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def open(self, queue, prefetch_count=1):
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if not self._connected:
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raise RuntimeError('Not connected to RabbitMQ')
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return Subscription(self._connection, queue, prefetch_count)
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