100 lines
3.8 KiB
Python
100 lines
3.8 KiB
Python
# Copyright 2015 - 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 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 kombu
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class Base(object):
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"""Base class for Client and Server."""
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@staticmethod
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def _make_connection(amqp_host, amqp_port, amqp_user, amqp_password,
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amqp_vhost):
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"""Create connection.
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This method creates object representing the connection to RabbitMQ.
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:param amqp_host: Address of RabbitMQ server.
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:param amqp_user: Username for connecting to RabbitMQ.
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:param amqp_password: Password matching the given username.
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:param amqp_vhost: Virtual host to connect to.
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:param amqp_port: Port of RabbitMQ server.
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:return: New connection to RabbitMQ.
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"""
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return kombu.BrokerConnection(
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hostname=amqp_host,
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userid=amqp_user,
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password=amqp_password,
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virtual_host=amqp_vhost,
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port=amqp_port
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)
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@staticmethod
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def _make_exchange(name, durable=False, auto_delete=True,
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exchange_type='topic'):
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"""Make named exchange.
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This method creates object representing exchange on RabbitMQ. It would
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create a new exchange if exchange with given name don't exists.
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:param name: Name of the exchange.
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:param durable: If set to True, messages on this exchange would be
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store on disk - therefore can be retrieve after
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failure.
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:param auto_delete: If set to True, exchange would be automatically
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deleted when none is connected.
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:param exchange_type: Type of the exchange. Can be one of 'direct',
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'topic', 'fanout', 'headers'. See Kombu docs for
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further details.
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:return: Kombu exchange object.
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"""
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return kombu.Exchange(
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name=name,
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type=exchange_type,
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durable=durable,
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auto_delete=auto_delete
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)
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@staticmethod
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def _make_queue(name, exchange, routing_key='',
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durable=False, auto_delete=True, **kwargs):
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"""Make named queue for a given exchange.
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This method creates object representing queue in RabbitMQ. It would
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create a new queue if queue with given name don't exists.
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:param name: Name of the queue
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:param exchange: Kombu Exchange object (can be created using
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_make_exchange).
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:param routing_key: Routing key for queue. It behaves differently
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depending the exchange type. See Kombu docs for
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further details.
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:param durable: If set to True, messages on this queue would be
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store on disk - therefore can be retrieve after
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failure.
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:param auto_delete: If set to True, queue would be automatically
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deleted when none is connected.
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:param kwargs: See kombu documentation for all parameters than may be
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may be passed to Queue.
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:return: Kombu Queue object.
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"""
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return kombu.Queue(
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name=name,
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routing_key=routing_key,
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exchange=exchange,
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durable=durable,
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auto_delete=auto_delete,
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**kwargs
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)
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