93 lines
2.9 KiB
Python
93 lines
2.9 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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from eventlet import patcher
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puka = patcher.import_patched('puka')
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import anyjson
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from subscription import Subscription
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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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scheme = 'amqp:' if not ssl else 'amqps:'
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ssl_parameters = None
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if ssl:
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ssl_parameters = puka.SslConnectionParameters()
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ssl_parameters.ca_certs = ca_certs
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self._client = puka.Client('{0}//{1}:{2}@{3}:{4}/{5}'.format(
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scheme,
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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_parameters=ssl_parameters)
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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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if not self._connected:
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promise = self._client.connect()
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if self._client.wait(promise, timeout=10) is not None:
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self._connected = True
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def close(self):
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if self._connected:
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promise = self._client.close()
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self._client.wait(promise)
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self._connected = False
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def declare(self, queue, exchange=None):
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promise = self._client.queue_declare(str(queue), durable=True)
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self._client.wait(promise)
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if exchange:
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promise = self._client.exchange_declare(
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str(exchange),
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durable=True)
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self._client.wait(promise)
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promise = self._client.queue_bind(
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str(queue), str(exchange), routing_key=str(queue))
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self._client.wait(promise)
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def send(self, message, key, exchange='', timeout=None):
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if not self._connected:
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raise RuntimeError('Not connected to RabbitMQ')
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headers = {'message_id': message.id}
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promise = self._client.basic_publish(
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exchange=str(exchange),
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routing_key=str(key),
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body=anyjson.dumps(message.body),
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headers=headers)
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self._client.wait(promise, timeout=timeout)
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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._client, queue, prefetch_count)
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