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* 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 .
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package jdk.jfr.jmx;
import java.io.BufferedOutputStream;
import java.io.File;
import java.io.FileOutputStream;
import java.io.IOException;
import java.lang.management.ManagementFactory;
import java.time.Instant;
import java.util.ArrayList;
import java.util.HashMap;
import java.util.List;
import java.util.Map;
import com.sun.tools.attach.VirtualMachine;
import jdk.jfr.EventType;
import jdk.jfr.FlightRecorder;
import jdk.jfr.Recording;
import jdk.jfr.RecordingState;
import jdk.jfr.SettingDescriptor;
import jdk.jfr.consumer.RecordedEvent;
import jdk.jfr.consumer.RecordingFile;
import jdk.management.jfr.EventTypeInfo;
import jdk.management.jfr.FlightRecorderMXBean;
import jdk.management.jfr.RecordingInfo;
import jdk.management.jfr.SettingDescriptorInfo;
import jdk.test.lib.Asserts;
import jdk.test.lib.Utils;
import jdk.test.lib.jfr.CommonHelper;
import jdk.test.lib.jfr.Events;
import javax.management.JMX;
import javax.management.MBeanServerConnection;
import javax.management.ObjectName;
import javax.management.remote.JMXConnector;
import javax.management.remote.JMXConnectorFactory;
import javax.management.remote.JMXServiceURL;
public class JmxHelper {
private static final String LOCAL_CONNECTION_ADDRESS = "com.sun.management.jmxremote.localConnectorAddress" ;
public static RecordingInfo getJmxRecording(long recId) {
for (RecordingInfo r : getFlighteRecorderMXBean().getRecordings()) {
if (r.getId() == recId) {
return r;
}
}
Asserts.fail("No RecordingInfo with id " + recId);
return null ;
}
public static Recording getJavaRecording(long recId) {
for (Recording r : FlightRecorder.getFlightRecorder().getRecordings()) {
if (r.getId() == recId) {
return r;
}
}
Asserts.fail("No Recording with id " + recId);
return null ;
}
public static void verifyState(long recId, RecordingState state, List<RecordingInfo> recordings) {
RecordingInfo r = verifyExists(recId, recordings);
verifyState(r, state);
}
public static void verifyState(RecordingInfo recording, RecordingState state) {
final String actual = recording.getState().toString();
final String expected = state.toString();
Asserts.assertEquals(actual, expected, "Wrong state" );
}
public static void verifyState(long recId, RecordingState state, FlightRecorderMXBean bean) throws Exception {
FlightRecorder jfr = FlightRecorder.getFlightRecorder();
Recording recording = CommonHelper.verifyExists(recId, jfr.getRecordings());
CommonHelper.verifyRecordingState(recording, state);
verifyState(recId, state, bean.getRecordings());
}
public static void verifyNotExists(long recId, List<RecordingInfo> recordings) {
for (RecordingInfo r : recordings) {
if (recId == r.getId()) {
logRecordingInfos(recordings);
Asserts.fail("Recording should not exist, id=" + recId);
}
}
}
public static RecordingInfo verifyExists(long recId, List<RecordingInfo> recordings) {
for (RecordingInfo r : recordings) {
if (recId == r.getId()) {
return r;
}
}
logRecordingInfos(recordings);
Asserts.fail("Recording not found, id=" + recId);
return null ;
}
public static void logRecordingInfos(List<RecordingInfo> recordings) {
System.out.println("RecordingInfos:" );
for (RecordingInfo r : recordings) {
System.out.println(asString(r));
}
}
public static void logRecordings(List<Recording> recordings) {
System.out.println("Recordings:" );
for (Recording r : recordings) {
System.out.println(asString(r));
}
}
static File dump(long streamId, FlightRecorderMXBean bean) throws IOException {
File f = Utils.createTempFile("stream_" + streamId + "_" , ".jfr" ).toFile();
try (FileOutputStream fos = new FileOutputStream(f); BufferedOutputStream bos = new BufferedOutputStream(fos)) {
while (true ) {
byte [] data = bean.readStream(streamId);
if (data == null ) {
bos.flush();
return f;
}
bos.write(data);
}
}
}
public static List<RecordedEvent> parseStream(long streamId, FlightRecorderMXBean bean) throws Exception {
File dumpFile = dump(streamId, bean);
System.out.println("data.length=" + dumpFile.length());
List<RecordedEvent> events = new ArrayList<>();
for (RecordedEvent event : RecordingFile.readAllEvents(dumpFile.toPath())) {
System.out.println("EVENT:" + event);
events.add(event);
}
return events;
}
public static void verifyEquals(RecordingInfo ri, Recording r) {
String destination = r.getDestination() != null ? r.getDestination().toString() : null ;
long maxAge = r.getMaxAge() != null ? r.getMaxAge().getSeconds() : 0 ;
long duration = r.getDuration() != null ? r.getDuration().getSeconds() : 0 ;
Asserts.assertEquals(destination, ri.getDestination(), "Wrong destination" );
Asserts.assertEquals(r.getDumpOnExit(), ri.getDumpOnExit(), "Wrong dumpOnExit" );
Asserts.assertEquals(duration, ri.getDuration(), "Wrong duration" );
Asserts.assertEquals(r.getId(), ri.getId(), "Wrong id" );
Asserts.assertEquals(maxAge, ri.getMaxAge(), "Wrong maxAge" );
Asserts.assertEquals(r.getMaxSize(), ri.getMaxSize(), "Wrong maxSize" );
Asserts.assertEquals(r.getName(), ri.getName(), "Wrong name" );
Asserts.assertEquals(r.getSize(), ri.getSize(), "Wrong size" );
Asserts.assertEquals(toEpochMillis(r.getStartTime()), ri.getStartTime(), "Wrong startTime" );
Asserts.assertEquals(r.getState().toString(), ri.getState(), "Wrong state" );
Asserts.assertEquals(toEpochMillis(r.getStopTime()), ri.getStopTime(), "Wrong stopTime" );
verifyMapEquals(r.getSettings(), ri.getSettings());
}
public static String asString(RecordingInfo r) {
StringBuffer sb = new StringBuffer();
sb.append(String.format("RecordingInfo:%n" ));
sb.append(String.format("destination=%s%n" , r.getDestination()));
sb.append(String.format("dumpOnExit=%b%n" , r.getDumpOnExit()));
sb.append(String.format("duration=%d%n" , r.getDuration()));
sb.append(String.format("id=%d%n" , r.getId()));
sb.append(String.format("maxAge=%d%n" , r.getMaxAge()));
sb.append(String.format("maxSize=%d%n" , r.getMaxSize()));
sb.append(String.format("getName=%s%n" , r.getName()));
sb.append(String.format("size=%d%n" , r.getSize()));
sb.append(String.format("startTime=%d%n" , r.getStartTime()));
sb.append(String.format("state=%s%n" , r.getState()));
sb.append(String.format("stopTime=%d%n" , r.getStopTime()));
return sb.toString();
}
public static String asString(Recording r) {
StringBuffer sb = new StringBuffer();
sb.append(String.format("Recording:%n" ));
sb.append(String.format("destination=%s%n" , r.getDestination()));
sb.append(String.format("dumpOnExit=%b%n" , r.getDumpOnExit()));
sb.append(String.format("duration=%d%n" , r.getDuration().getSeconds()));
sb.append(String.format("id=%d%n" , r.getId()));
sb.append(String.format("maxAge=%d%n" , r.getMaxAge().getSeconds()));
sb.append(String.format("maxSize=%d%n" , r.getMaxSize()));
sb.append(String.format("getName=%s%n" , r.getName()));
sb.append(String.format("size=%d%n" , r.getSize()));
sb.append(String.format("startTime=%d%n" , toEpochMillis(r.getStartTime())));
sb.append(String.format("state=%s%n" , r.getState()));
sb.append(String.format("stopTime=%d%n" , toEpochMillis(r.getStopTime())));
return sb.toString();
}
public static void verifyMapEquals(Map<String, String> a, Map<String, String> b) {
try {
Asserts.assertEquals(a.size(), b.size(), "Wrong number of keys" );
for (String key : a.keySet()) {
Asserts.assertTrue(a.containsKey(key), "Missing key " + key);
Asserts.assertEquals(a.get(key), b.get(key), "Wrong values for key " + key);
//System.out.printf("equal: %s=%s%n", key, a.get(key));
}
} catch (Exception e) {
System.out.println("Error: " + e.getMessage());
logMap("a" , a);
logMap("b" , b);
throw e;
}
}
public static void logMap(String name, Map<String, String> map) {
for (String key : map.keySet()) {
System.out.printf("map %s: %s=%s%n" , name, key, map.get(key));
}
}
private static long toEpochMillis(Instant instant) {
return instant != null ? instant.toEpochMilli() : 0 ;
}
public static void verifyEventSettingsEqual(EventType javaType, EventTypeInfo jmxType) {
Map<String, SettingDescriptor> javaSettings = new HashMap<>();
for (SettingDescriptor settingDescriptor : javaType.getSettingDescriptors()) {
javaSettings.put(settingDescriptor.getName(), settingDescriptor);
}
Asserts.assertFalse(javaSettings.isEmpty(), "No ValueDescriptor for EventType " + javaType.getName());
for (SettingDescriptorInfo jmxSetting : jmxType.getSettingDescriptors()) {
final String name = jmxSetting.getName();
System.out.printf("SettingDescriptorInfo: %s#%s=%s%n" , jmxType.getName(), name, jmxSetting.getDefaultValue());
SettingDescriptor javaSetting = javaSettings.remove(name);
Asserts.assertNotNull(javaSetting, "No Setting for name " + name);
Asserts.assertEquals(jmxSetting.getDefaultValue(), Events.getSetting(javaType, name).getDefaultValue(), "Wrong default value" );
Asserts.assertEquals(jmxSetting.getDescription(), javaSetting.getDescription(), "Wrong description" );
Asserts.assertEquals(jmxSetting.getLabel(), javaSetting.getLabel(), "Wrong label" );
Asserts.assertEquals(jmxSetting.getName(), javaSetting.getName(), "Wrong name" );
Asserts.assertEquals(jmxSetting.getTypeName(), javaSetting.getTypeName(), "Wrong type name" );
Asserts.assertEquals(jmxSetting.getContentType(), javaSetting.getContentType());
}
// Verify that all Settings have been matched.
if (!javaSettings.isEmpty()) {
for (String name : javaSettings.keySet()) {
System.out.println("Missing setting" + name + " in EventTypeInfo for " + javaType.getName());
}
System.out.println();
System.out.println(javaType.getName() + " Java API" );
System.out.println("===============" );
for (SettingDescriptor v : javaType.getSettingDescriptors()) {
System.out.println(" - " + v.getName());
}
System.out.println();
System.out.println(jmxType.getName() + " JMX API" );
System.out.println("===============" );
for (SettingDescriptorInfo v : jmxType.getSettingDescriptors()) {
System.out.println(" - " + v.getName());
}
Asserts.fail("Missing setting" );
}
}
public static FlightRecorderMXBean getFlighteRecorderMXBean() {
return ManagementFactory.getPlatformMXBean(FlightRecorderMXBean.class );
}
public static long getPID(){
return ManagementFactory.getRuntimeMXBean().getPid();
}
public static FlightRecorderMXBean getFlighteRecorderMXBean(long pid) throws Exception {
VirtualMachine targetVM = VirtualMachine.attach("" + pid);
String jmxServiceUrl = targetVM.getAgentProperties().getProperty(LOCAL_CONNECTION_ADDRESS);
JMXServiceURL jmxURL = new JMXServiceURL(jmxServiceUrl);
JMXConnector connector = JMXConnectorFactory.connect(jmxURL);
MBeanServerConnection connection = connector.getMBeanServerConnection();
ObjectName objectName = new ObjectName("jdk.management.jfr:type=FlightRecorder" );
return JMX.newMXBeanProxy(connection, objectName, FlightRecorderMXBean.class );
}
}
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¤ Dauer der Verarbeitung: 0.1 Sekunden
(vorverarbeitet am 2026-06-10)
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