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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.
*/
package org.apache.bigtop.itest.failures
import org.apache.bigtop.itest.shell.OS
import org.junit.Test
import org.apache.bigtop.itest.shell.Shell
public class ClusterFailuresTest {
private Shell rootShell = new Shell("/bin/bash", "root")
private final int SLEEP_TIME = 100
private final String TEST_HOST = "localhost"
private final String TEST_REMOTE_HOST = "apache.org"
private final String CRON_SERVICE
{
switch (OS.linux_flavor) {
case ~/(?is).*(redhat|centos|rhel|fedora|enterpriseenterpriseserver).*/:
CRON_SERVICE = "crond"
break
default:
CRON_SERVICE = "cron"
}
}
@Test
void testServiceRestart() {
startCron()
assert isCronRunning(), "$CRON_SERVICE service isn't running before the test:"
def cronKilled = new ServiceRestartFailure([TEST_HOST], "$CRON_SERVICE")
Thread t = new Thread(cronKilled)
t.start()
while (isCronRunning()) {
println "$CRON_SERVICE it still running"
Thread.sleep(SLEEP_TIME)
}
try{
assert !isCronRunning(), "$CRON_SERVICE hasn't been stopped as expected:"
println "$CRON_SERVICE stopped. Good."
} finally {
t.interrupt()
}
while (!isCronRunning()) {
println "$CRON_SERVICE it still stopped.."
Thread.sleep(SLEEP_TIME)
}
assert isCronRunning(), "$CRON_SERVICE hasn't been restarted after the test:"
println "$CRON_SERVICE is up. Good"
}
@Test
void testServiceKilled() {
// On Ubuntu services like cron or ssh get restarted automatically if killed,
// so for now disabling this test for Ubuntu users.
if (OS.linux_flavor ==~ /(?is).*(ubuntu|debian).*/) {
println "As you're running on $OS.linux_flavor, testServiceKilled() doesn't run for you."
return
}
startCron()
assert isCronRunning(), "$CRON_SERVICE service isn't running before the test:"
def cronKilled = new ServiceKilledFailure([TEST_HOST], "$CRON_SERVICE")
Thread t = new Thread(cronKilled)
t.start()
while (isCronRunning()) {
println "$CRON_SERVICE it still running.."
Thread.sleep(SLEEP_TIME)
}
try{
assert !isCronRunning(), "$CRON_SERVICE hasn't been killed as expected:"
println "$CRON_SERVICE killed. Good."
} finally {
t.interrupt()
}
while (!isCronRunning()) {
println "$CRON_SERVICE it still killed..."
Thread.sleep(SLEEP_TIME)
}
assert isCronRunning(), "$CRON_SERVICE hasn't been restarted after the test:"
println "$CRON_SERVICE is up. Good."
}
@Test
void testNetworkShutdown() {
//make sure there are no blocking rules
rootShell.exec("iptables -D INPUT -s $TEST_REMOTE_HOST -j DROP")
rootShell.exec("iptables -D OUTPUT -d $TEST_REMOTE_HOST -j DROP")
assert isRemoteHostReachable(), "No ping to $TEST_REMOTE_HOST, which is used for network failures test:"
def networkShutdown = new NetworkShutdownFailure(TEST_HOST, [TEST_REMOTE_HOST])
Thread t = new Thread(networkShutdown)
t.start()
while (isRemoteHostReachable()) {
println "$TEST_REMOTE_HOST is still reachable..."
Thread.sleep(SLEEP_TIME)
}
try{
assert !isRemoteHostReachable(), "Connection to $TEST_REMOTE_HOST hasn't been killed as expected:"
println "$TEST_REMOTE_HOST isn't reachable. Good."
} finally {
t.interrupt()
}
while (!isRemoteHostReachable()) {
println "$TEST_REMOTE_HOST isn't reachable..."
Thread.sleep(SLEEP_TIME)
}
assert isRemoteHostReachable(), "Connection to $TEST_REMOTE_HOST hasn't been restored after the test:"
println "$TEST_REMOTE_HOST is reachable again. Good."
}
private boolean isCronRunning() {
return rootShell.exec("pgrep $CRON_SERVICE").ret == 0 ? true : false
}
private void startCron() {
rootShell.exec("service $CRON_SERVICE start")
}
private boolean isRemoteHostReachable() {
return rootShell.exec("ping -qc 1 $TEST_REMOTE_HOST").ret == 0 ? true : false
}
}
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