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/*
* Copyright (c) 2015, Oracle and/or its affiliates. All rights reserved.
* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
*
* This code is free software; you can redistribute it and/or modify it
* under the terms of the GNU General Public License version 2 only, as
* published by the Free Software Foundation.
*
* This code is distributed in the hope that it will be useful, but WITHOUT
* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
* version 2 for more details (a copy is included in the LICENSE file that
* accompanied this code).
*
* You should have received a copy of the GNU General Public License version
* 2 along with this work; if not, write to the Free Software Foundation,
* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
*
* Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
* or visit www.oracle.com if you need additional information or have any
* questions.
*/
import java.io.IOException;
import java.net.BindException;
import java.util.Properties;
import java.util.function.Predicate;
import static org.testng.Assert.*;
import org.testng.annotations.AfterMethod;
import org.testng.annotations.BeforeClass;
import org.testng.annotations.BeforeMethod;
import org.testng.annotations.BeforeTest;
import org.testng.annotations.Test;
import jdk.testlibrary.ProcessTools;
/**
* @test
* @bug 8075926
* @key intermittent
* @summary Makes sure that the current management agent status is reflected
* in the related performance counters.
*
* @library /lib/testlibrary
*
* @build jdk.testlibrary.* PortAllocator TestApp ManagementAgentJcmd
* @run testng/othervm -XX:+UsePerfData JMXStatusPerfCountersTest
*/
public class JMXStatusPerfCountersTest {
private final static String TEST_APP_NAME = "TestApp";
private final static String REMOTE_STATUS_KEY = "sun.management.JMXConnectorServer.remote.enabled";
private static ProcessBuilder testAppPb;
private Process testApp;
private ManagementAgentJcmd jcmd;
@BeforeClass
public static void setupClass() throws Exception {
testAppPb = ProcessTools.createJavaProcessBuilder(
"-XX:+UsePerfData",
"-cp", System.getProperty("test.class.path"),
TEST_APP_NAME
);
}
@BeforeTest
public void setup() {
jcmd = new ManagementAgentJcmd(TEST_APP_NAME, false);
}
@BeforeMethod
public void startTestApp() throws Exception {
testApp = ProcessTools.startProcess(
TEST_APP_NAME, testAppPb,
(Predicate<String>)l->l.trim().equals("main enter")
);
}
@AfterMethod
public void stopTestApp() throws Exception {
testApp.getOutputStream().write(1);
testApp.getOutputStream().flush();
testApp.waitFor();
testApp = null;
}
/**
* The 'sun.management.JMXConnectorServer.remote.enabled' counter must not be
* exported if the remote agent is not enabled.
* @throws Exception
*/
@Test
public void testNotInitializedRemote() throws Exception {
assertFalse(
getCounters().containsKey(REMOTE_STATUS_KEY),
"Unexpected occurrence of " + REMOTE_STATUS_KEY + " in perf counters"
);
}
/**
* After enabling the remote agent the 'sun.management.JMXConnectorServer.remote.enabled'
* counter will be exported with value of '0' - corresponding to the actual
* version of the associated remote connector perf counters.
* @throws Exception
*/
@Test
public void testRemoteEnabled() throws Exception {
while (true) {
try {
int[] ports = PortAllocator.allocatePorts(1);
jcmd.start(
"jmxremote.port=" + ports[0],
"jmxremote.authenticate=false",
"jmxremote.ssl=false"
);
String v = getCounters().getProperty(REMOTE_STATUS_KEY);
assertNotNull(v);
assertEquals("0", v);
return;
} catch (BindException e) {
System.out.println("Failed to allocate ports. Retrying ...");
}
}
}
/**
* After disabling the remote agent the value of 'sun.management.JMXConnectorServer.remote.enabled'
* counter will become '-1'.
* @throws Exception
*/
@Test
public void testRemoteDisabled() throws Exception {
while (true) {
try {
int[] ports = PortAllocator.allocatePorts(1);
jcmd.start(
"jmxremote.port=" + ports[0],
"jmxremote.authenticate=false",
"jmxremote.ssl=false"
);
jcmd.stop();
String v = getCounters().getProperty(REMOTE_STATUS_KEY);
assertNotNull(v);
assertEquals("-1", v);
return;
} catch (BindException e) {
System.out.println("Failed to allocate ports. Retrying ...");
}
}
}
/**
* Each subsequent re-enablement of the remote agent must keep the value of
* 'sun.management.JMXConnectorServer.remote.enabled' counter in sync with
* the actual version of the associated remote connector perf counters.
* @throws Exception
*/
@Test
public void testRemoteReEnabled() throws Exception {
while (true) {
try {
int[] ports = PortAllocator.allocatePorts(1);
jcmd.start(
"jmxremote.port=" + ports[0],
"jmxremote.authenticate=false",
"jmxremote.ssl=false"
);
jcmd.stop();
jcmd.start(
"jmxremote.port=" + ports[0],
"jmxremote.authenticate=false",
"jmxremote.ssl=false"
);
String v = getCounters().getProperty(REMOTE_STATUS_KEY);
assertNotNull(v);
assertEquals("1", v);
return;
} catch (BindException e) {
System.out.println("Failed to allocate ports. Retrying ...");
}
}
}
private Properties getCounters() throws IOException, InterruptedException {
return jcmd.perfCounters("sun\\.management\\.JMXConnectorServer\\..*");
}
}
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