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#
# Licensed to the Apache Software Foundation (ASF) under one
# or more contributor license agreements. See the NOTICE file
# distributed with this work for additional information
# regarding copyright ownership. The ASF licenses this file
# to you 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 time
from qpid.client import Client, Closed
from qpid.queue import Empty
from qpid.content import Content
from qpid.testlib import TestBase
from qpid.exceptions import Timeout
class QueueTests(TestBase):
"""Tests for 'methods' on the amqp queue 'class'"""
def test_unbind_direct(self):
self.unbind_test(exchange="amq.direct", routing_key="key")
def test_unbind_topic(self):
self.unbind_test(exchange="amq.topic", routing_key="key")
def test_unbind_fanout(self):
self.unbind_test(exchange="amq.fanout")
def test_unbind_headers(self):
self.unbind_test(exchange="amq.match", args={ "x-match":"all", "a":"b"}, headers={"a":"b"})
def unbind_test(self, exchange, routing_key="", args=None, headers={}):
#bind two queues and consume from them
channel = self.channel
channel.queue_declare(queue="queue-1", exclusive="True")
channel.queue_declare(queue="queue-2", exclusive="True")
channel.basic_consume(queue="queue-1", consumer_tag="queue-1", no_ack=True)
channel.basic_consume(queue="queue-2", consumer_tag="queue-2", no_ack=True)
queue1 = self.client.queue("queue-1")
queue2 = self.client.queue("queue-2")
channel.queue_bind(exchange=exchange, queue="queue-1", routing_key=routing_key, arguments=args)
channel.queue_bind(exchange=exchange, queue="queue-2", routing_key=routing_key, arguments=args)
#send a message that will match both bindings
channel.basic_publish(exchange=exchange, routing_key=routing_key,
content=Content("one", properties={"headers": headers}))
#unbind first queue
channel.queue_unbind(exchange=exchange, queue="queue-1", routing_key=routing_key, arguments=args)
#send another message
channel.basic_publish(exchange=exchange, routing_key=routing_key,
content=Content("two", properties={"headers": headers}))
#check one queue has both messages and the other has only one
self.assertEquals("one", queue1.get(timeout=1).content.body)
try:
msg = queue1.get(timeout=1)
self.fail("Got extra message: %s" % msg.body)
except Empty: pass
self.assertEquals("one", queue2.get(timeout=1).content.body)
self.assertEquals("two", queue2.get(timeout=1).content.body)
try:
msg = queue2.get(timeout=1)
self.fail("Got extra message: " + msg)
except Empty: pass
def test_autodelete_shared(self):
"""
Test auto-deletion (of non-exclusive queues)
"""
channel = self.channel
other = self.connect()
channel2 = other.channel(1)
channel2.channel_open()
channel.queue_declare(queue="auto-delete-me", auto_delete=True)
#consume from both channels
reply = channel.basic_consume(queue="auto-delete-me", no_ack=True)
channel2.basic_consume(queue="auto-delete-me", no_ack=True)
#implicit cancel
channel2.channel_close()
#check it is still there
channel.queue_declare(queue="auto-delete-me", passive=True)
#explicit cancel => queue is now unused again:
channel.basic_cancel(consumer_tag=reply.consumer_tag)
#NOTE: this assumes there is no timeout in use
#check that it has gone be declaring passively
try:
channel.queue_declare(queue="auto-delete-me", passive=True)
self.fail("Expected queue to have been deleted")
except Closed, e:
self.assertChannelException(404, e.args[0])
def test_flow_control(self):
queue_name="flow-controled-queue"
connection = self.connect(channel_options={"qpid.flow_control_wait_failure" : 1})
channel = connection.channel(1)
channel.channel_open()
channel.queue_declare(queue=queue_name, arguments={"x-qpid-capacity" : 25, "x-qpid-flow-resume-capacity" : 15})
try:
for i in xrange(100):
channel.basic_publish(exchange="", routing_key=queue_name,
content=Content("This is a message with more than 25 bytes. This should trigger flow control."))
time.sleep(.1)
self.fail("Flow Control did not work")
except Timeout:
# this is expected
pass
consumer_reply = channel.basic_consume(queue=queue_name, consumer_tag="consumer", no_ack=True)
queue = self.client.queue(consumer_reply.consumer_tag)
while True:
try:
msg = queue.get(timeout=1)
except Empty:
break
channel.basic_cancel(consumer_tag=consumer_reply.consumer_tag)
try:
channel.basic_publish(exchange="", routing_key=queue_name,
content=Content("This should not block because we have just cleared the queue."))
except Timeout:
self.fail("Unexpected Timeout. Flow Control should not be in effect.")
connection.close()
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