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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
from qpid import datatypes, messaging
from qpid.brokertest import *
from qpid.harness import Skipped
from qpid.messaging import Message
from threading import Thread
from logging import getLogger
log = getLogger("qpid.cluster_tests")
# Import scripts as modules
qpid_cluster=import_script(checkenv("QPID_CLUSTER_EXEC"))
class ShortTests(BrokerTest):
"""Short cluster functionality tests."""
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(Message("x"))
s0.sender("q; {create:always}").send(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()
class LongTests(BrokerTest):
"""Tests that can run for a long time if -DDURATION=<minutes> is set"""
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_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)
for b in cluster: ErrorGenerator(b)
# Start sender and receiver threads
cluster[0].declare_queue("test-queue")
sender = NumberedSender(cluster[1], 1000) # Max queue depth
receiver = NumberedReceiver(cluster[2], sender)
receiver.start()
sender.start()
# Kill original brokers, start new ones for the duration.
endtime = time.time() + self.duration()
i = 0
while time.time() < endtime:
cluster[i].kill()
i += 1
b = cluster.start(expect=EXPECT_EXIT_FAIL)
ErrorGenerator(b)
time.sleep(1)
sender.stop()
receiver.stop(sender.sent)
for i in range(i, len(cluster)): cluster[i].kill()
class StoreTests(BrokerTest):
"""
Cluster tests that can only be run if there is a store available.
"""
def args(self):
assert BrokerTest.store_lib
return ["--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 = 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_persistent_restart(self):
"""Verify persistent cluster shutdown/restart scenarios"""
cluster = self.cluster(0, args=self.args() + ["--cluster-size=3"])
a = cluster.start("a", expect=EXPECT_EXIT_OK, wait_for_start=False)
b = cluster.start("b", expect=EXPECT_EXIT_OK, wait_for_start=False)
c = cluster.start("c", expect=EXPECT_EXIT_FAIL, wait_for_start=True)
a.send_message("q", Message("1", durable=True))
# Kill & restart one member.
c.kill()
self.assertEqual(a.get_message("q").content, "1")
a.send_message("q", Message("2", durable=True))
c = cluster.start("c", expect=EXPECT_EXIT_OK)
self.assertEqual(c.get_message("q").content, "2")
# Shut down the entire cluster cleanly and bring it back up
a.send_message("q", Message("3", durable=True))
qpid_cluster.main(["qpid-cluster", "-kf", a.host_port()])
a = cluster.start("a", wait_for_start=False)
b = cluster.start("b", wait_for_start=False)
c = cluster.start("c", wait_for_start=True)
self.assertEqual(a.get_message("q").content, "3")
def test_persistent_partial_failure(self):
# Kill 2 members, shut down the last cleanly then restart
# Ensure we use the clean database
cluster = self.cluster(0, args=self.args() + ["--cluster-size=3"])
a = cluster.start("a", expect=EXPECT_EXIT_FAIL, wait_for_start=False)
b = cluster.start("b", expect=EXPECT_EXIT_FAIL, wait_for_start=False)
c = cluster.start("c", expect=EXPECT_EXIT_OK, wait_for_start=True)
a.send_message("q", Message("4", durable=True))
a.kill()
b.kill()
self.assertEqual(c.get_message("q").content, "4")
c.send_message("q", Message("clean", durable=True))
qpid_cluster.main(["qpid-cluster", "-kf", c.host_port()])
a = cluster.start("a", wait_for_start=False)
b = cluster.start("b", wait_for_start=False)
c = cluster.start("c", wait_for_start=True)
self.assertEqual(a.get_message("q").content, "clean")
def test_wrong_store_uuid(self):
# Start a cluster1 broker, then try to restart in cluster2
cluster1 = self.cluster(0, args=self.args())
a = cluster1.start("a", expect=EXPECT_EXIT_OK)
a.terminate()
cluster2 = self.cluster(1, args=self.args())
try:
a = cluster2.start("a", expect=EXPECT_EXIT_FAIL)
self.fail("Expected exception")
except: pass
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