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#!/usr/bin/env python
# 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 os, signal, sys, time, imp, re, subprocess
from qpid import datatypes, messaging
from brokertest import *
from qpid.harness import Skipped
from qpid.messaging import Message
from qpid.messaging.exceptions import *
from threading import Thread, Lock
from logging import getLogger
from itertools import chain
log = getLogger("qpid.cluster_tests")
class Cluster2Tests(BrokerTest):
"""Tests for new cluster code."""
def queue_exists(self, queue, connection):
s = connection.session()
try:
s.sender(queue)
return True
except qpid.messaging.exceptions.NotFound:
return False
# FIXME aconway 2011-06-22: needed to compensate for
# async wiring in early cluster2 prototype
def wait_for_queue(self, queue, connections, timeout=10):
deadline = time.time() + timeout
for c in connections:
while not self.queue_exists(queue,c):
if time.time() > timeout: fail("Time out in wait_for_queue(%s))"%queue)
time.sleep(0.01)
def test_message_enqueue(self):
"""Test basic replication of enqueued messages.
Verify that fanout messages are replicated correctly.
"""
cluster = self.cluster(2, cluster2=True)
sn0 = cluster[0].connect().session()
s0 = sn0.sender("amq.fanout");
sn1 = cluster[1].connect().session()
# Bind queues to amq.fanout
sn0.receiver("p; {mode:browse, create:always, node:{x-bindings:[{exchange:'amq.fanout', queue:p}]}}");
sn0.receiver("q; {mode:browse, create:always, node:{x-bindings:[{exchange:'amq.fanout', queue:q}]}}");
# Send messages on member 0
content = ["a","b","c"]
for m in content: s0.send(Message(m))
# Browse on both members.
self.assert_browse(sn0, "p", content)
self.assert_browse(sn0, "q", content)
self.assert_browse(sn1, "p", content)
self.assert_browse(sn1, "q", content)
sn1.connection.close()
sn0.connection.close()
def test_message_dequeue(self):
"""Test replication of dequeues"""
cluster = self.cluster(2, cluster2=True)
sn0 = cluster[0].connect().session()
s0 = sn0.sender("q;{create:always,delete:always}")
r0 = sn0.receiver("q")
sn1 = cluster[1].connect().session()
r1 = sn1.receiver("q;{create:always}")
content = ["a","b","c"]
for m in content: s0.send(Message(m))
# Verify enqueued on members 0 and 1
self.assert_browse(sn0, "q", content)
self.assert_browse(sn1, "q", content)
# Dequeue on cluster[0]
self.assertEqual(r0.fetch(1).content, "a")
sn0.acknowledge(sync=True)
# Verify dequeued on cluster[0] and cluster[1]
self.assert_browse(sn0, "q", ["b", "c"])
self.assert_browse(sn1, "q", ["b", "c"])
def test_wiring(self):
"""Test replication of wiring"""
cluster = self.cluster(2, cluster2=True)
sn0 = cluster[0].connect().session()
sn1 = cluster[1].connect().session()
# Test creation of queue, exchange, binding
r0ex = sn0.receiver("ex; {create:always, delete:always, node:{type:topic, x-declare:{name:ex, type:'direct'}}}")
r0q = sn0.receiver("q; {create:always, delete:always, link:{x-bindings:[{exchange:ex,queue:q,key:k}]}}")
# Verify objects were created on member 1
r1 = sn1.receiver("q") # Queue
s1ex = sn1.sender("ex/k; {node:{type:topic}}"); # Exchange
s1ex.send(Message("x")) # Binding with key k
self.assertEqual(r1.fetch(1).content, "x")
# Test destroy.
r0q.close() # Delete queue q
self.assertRaises(NotFound, sn1.receiver, "q")
r0ex.close() # Delete exchange ex
# FIXME aconway 2010-11-05: this does not raise NotFound, sn1 is caching "ex"
# self.assertRaises(NotFound, sn1.sender, "ex")
# Have to create a new session.
self.assertRaises(NotFound, cluster[1].connect().session().receiver, "ex")
# FIXME aconway 2010-10-29: test unbind, may need to use old API.
def duration(self):
d = self.config.defines.get("DURATION")
if d: return float(d)*60
else: return 3 # Default is to be quick
def test_dequeue_mutex(self):
"""Ensure that one and only one consumer receives each dequeued message."""
class Receiver(Thread):
def __init__(self, session):
self.session = session
self.receiver = session.receiver("q")
self.messages = []
self.error = None
Thread.__init__(self)
def run(self):
try:
while True:
self.messages.append(self.receiver.fetch(1))
self.session.acknowledge()
except Empty: pass
except Exception,e: self.error = e
cluster = self.cluster(3, cluster2=True)
connections = [ b.connect() for b in cluster]
sessions = [ c.session() for c in connections ]
sender = sessions[0].sender("q;{create:always}")
self.wait_for_queue("q", connections)
receivers = [ Receiver(s) for s in sessions ]
for r in receivers: r.start()
n = 0
t = time.time() + self.duration()
while time.time() < t:
sender.send(str(n))
n += 1
for r in receivers:
r.join();
if (r.error): self.fail("Receiver failed: %s" % r.error)
for r in receivers:
len(r.messages) > n/6 # Fairness test.
messages = [int(m.content) for r in receivers for m in r.messages ]
messages.sort()
self.assertEqual(range(n), messages)
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