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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
from threading import Thread
from brokertest import *
from qpid import datatypes, messaging
from qpid.harness import Skipped
from qpid.messaging import Message
class ClusterTests(BrokerTest):
"""Cluster tests with support for testing with a store plugin."""
def test_message_replication(self):
"""Test basic cluster message replication."""
# Start a cluster, send some messages to member 0.
cluster = self.cluster(2)
s0 = cluster[0].connect().session()
s0.sender("q {create:always}").send(messaging.Message("x"))
s0.sender("q {create:always}").send(messaging.Message("y"))
s0.connection.close()
# Verify messages available on member 1.
s1 = cluster[1].connect().session()
m = s1.receiver("q", capacity=1).fetch(timeout=1)
s1.acknowledge()
self.assertEqual("x", m.content)
s1.connection.close()
# Start member 2 and verify messages available.
s2 = cluster.start().connect().session()
m = s2.receiver("q", capacity=1).fetch(timeout=1)
s2.acknowledge()
self.assertEqual("y", m.content)
s2.connection.close()
def test_failover(self):
"""Test fail-over during continuous send-receive with errors"""
# Original cluster will all be killed so expect exit with failure
cluster = self.cluster(3, expect=EXPECT_EXIT_FAIL)
# Start sender and receiver threads
cluster[0].declare_queue("test-queue")
receiver = NumberedReceiver(cluster[1])
receiver.start()
sender = NumberedSender(cluster[2])
sender.start()
# Kill original brokers, start new ones.
for i in range(3):
cluster[i].kill()
b = cluster.start()
time.sleep(1)
sender.stop()
receiver.stop(sender.sent)
def send_receive_verify(self, b1, b2, queue, msgs):
b1.send_messages(queue, msgs)
self.assertEqual(msgs, [ m.content for m in b2.get_messages(queue,len(msgs))])
def test_error_storm(self):
"""Verify cluster behaves with clients generating a lot of errors."""
cluster = self.cluster(3)
errgen = [ ErrorGenerator(b) for b in cluster ]
msgs = [ str(i) for i in range(10) ]
self.send_receive_verify(cluster[0], cluster[1], "q", msgs)
self.send_receive_verify(cluster[1], cluster[2], "q", msgs)
for i in range(3):
cluster.start()
self.send_receive_verify(cluster[1], cluster[2], "q", msgs)
class ClusterStoreTests(BrokerTest):
"""
Cluster tests that can only be run if there is a store available.
"""
args = ["--load-module",BrokerTest.store_lib]
def test_store_loaded(self):
"""Ensure we are indeed loading a working store"""
broker = self.broker(self.args, name="recoverme", expect=EXPECT_EXIT_FAIL)
m = messaging.Message("x", durable=True)
broker.send_message("q", m)
broker.kill()
broker = self.broker(self.args, name="recoverme")
self.assertEqual("x", broker.get_message("q").content)
def test_kill_restart(self):
"""Verify we can kill/resetart a broker with store in a cluster"""
cluster = self.cluster(1, self.args)
cluster.start("restartme", expect=EXPECT_EXIT_FAIL).kill()
# Send a message, retrieve from the restarted broker
cluster[0].send_message("q", "x")
m = cluster.start("restartme").get_message("q")
self.assertEqual("x", m.content)
def test_total_shutdown(self):
"""Test we use the correct store to recover after total shutdown"""
cluster = self.cluster(2, args=self.args, expect=EXPECT_EXIT_FAIL)
cluster[0].send_message("q", Message("a", durable=True))
cluster[0].kill()
self.assertEqual("a", cluster[1].get_message("q").content)
cluster[1].send_message("q", Message("b", durable=True))
cluster[1].kill()
# Start 1 first, we should see its store used.
cluster.start(name=cluster.name+"-1")
cluster.start(name=cluster.name+"-0")
self.assertEqual("b", cluster[2].get_message("q").content)
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