/*
* Licensed to Elasticsearch under one or more contributor
* license agreements. See the NOTICE file distributed with
* this work for additional information regarding copyright
* ownership. Elasticsearch 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.elasticsearch.monitor.jvm;
import org.elasticsearch.common.io.stream.StreamInput;
import org.elasticsearch.common.io.stream.StreamOutput;
import org.elasticsearch.common.io.stream.Writeable;
import org.elasticsearch.common.unit.ByteSizeValue;
import org.elasticsearch.common.xcontent.ToXContent;
import org.elasticsearch.common.xcontent.XContentBuilder;
import java.io.IOException;
import java.lang.management.GarbageCollectorMXBean;
import java.lang.management.ManagementFactory;
import java.lang.management.ManagementPermission;
import java.lang.management.MemoryMXBean;
import java.lang.management.MemoryPoolMXBean;
import java.lang.management.PlatformManagedObject;
import java.lang.management.RuntimeMXBean;
import java.lang.reflect.Method;
import java.util.Collections;
import java.util.List;
import java.util.Map;
public class JvmInfo implements Writeable, ToXContent {
private static JvmInfo INSTANCE;
static {
RuntimeMXBean runtimeMXBean = ManagementFactory.getRuntimeMXBean();
MemoryMXBean memoryMXBean = ManagementFactory.getMemoryMXBean();
// returns the <process id>@<host>
long pid;
String xPid = runtimeMXBean.getName();
try {
xPid = xPid.split("@")[0];
pid = Long.parseLong(xPid);
} catch (Exception e) {
pid = -1;
}
long heapInit = memoryMXBean.getHeapMemoryUsage().getInit() < 0 ? 0 : memoryMXBean.getHeapMemoryUsage().getInit();
long heapMax = memoryMXBean.getHeapMemoryUsage().getMax() < 0 ? 0 : memoryMXBean.getHeapMemoryUsage().getMax();
long nonHeapInit = memoryMXBean.getNonHeapMemoryUsage().getInit() < 0 ? 0 : memoryMXBean.getNonHeapMemoryUsage().getInit();
long nonHeapMax = memoryMXBean.getNonHeapMemoryUsage().getMax() < 0 ? 0 : memoryMXBean.getNonHeapMemoryUsage().getMax();
long directMemoryMax = 0;
try {
Class<?> vmClass = Class.forName("sun.misc.VM");
directMemoryMax = (Long) vmClass.getMethod("maxDirectMemory").invoke(null);
} catch (Exception t) {
// ignore
}
String[] inputArguments = runtimeMXBean.getInputArguments().toArray(new String[runtimeMXBean.getInputArguments().size()]);
Mem mem = new Mem(heapInit, heapMax, nonHeapInit, nonHeapMax, directMemoryMax);
String bootClassPath;
try {
bootClassPath = runtimeMXBean.getBootClassPath();
} catch (UnsupportedOperationException e) {
// oracle java 9
bootClassPath = System.getProperty("sun.boot.class.path");
if (bootClassPath == null) {
// something else
bootClassPath = "<unknown>";
}
}
String classPath = runtimeMXBean.getClassPath();
Map<String, String> systemProperties = Collections.unmodifiableMap(runtimeMXBean.getSystemProperties());
List<GarbageCollectorMXBean> gcMxBeans = ManagementFactory.getGarbageCollectorMXBeans();
String[] gcCollectors = new String[gcMxBeans.size()];
for (int i = 0; i < gcMxBeans.size(); i++) {
GarbageCollectorMXBean gcMxBean = gcMxBeans.get(i);
gcCollectors[i] = gcMxBean.getName();
}
List<MemoryPoolMXBean> memoryPoolMXBeans = ManagementFactory.getMemoryPoolMXBeans();
String[] memoryPools = new String[memoryPoolMXBeans.size()];
for (int i = 0; i < memoryPoolMXBeans.size(); i++) {
MemoryPoolMXBean memoryPoolMXBean = memoryPoolMXBeans.get(i);
memoryPools[i] = memoryPoolMXBean.getName();
}
String onError = null;
String onOutOfMemoryError = null;
String useCompressedOops = "unknown";
String useG1GC = "unknown";
String useSerialGC = "unknown";
long configuredInitialHeapSize = -1;
long configuredMaxHeapSize = -1;
try {
@SuppressWarnings("unchecked") Class<? extends PlatformManagedObject> clazz =
(Class<? extends PlatformManagedObject>)Class.forName("com.sun.management.HotSpotDiagnosticMXBean");
Class<?> vmOptionClazz = Class.forName("com.sun.management.VMOption");
PlatformManagedObject hotSpotDiagnosticMXBean = ManagementFactory.getPlatformMXBean(clazz);
Method vmOptionMethod = clazz.getMethod("getVMOption", String.class);
Method valueMethod = vmOptionClazz.getMethod("getValue");
try {
Object onErrorObject = vmOptionMethod.invoke(hotSpotDiagnosticMXBean, "OnError");
onError = (String) valueMethod.invoke(onErrorObject);
} catch (Exception ignored) {
}
try {
Object onOutOfMemoryErrorObject = vmOptionMethod.invoke(hotSpotDiagnosticMXBean, "OnOutOfMemoryError");
onOutOfMemoryError = (String) valueMethod.invoke(onOutOfMemoryErrorObject);
} catch (Exception ignored) {
}
try {
Object useCompressedOopsVmOptionObject = vmOptionMethod.invoke(hotSpotDiagnosticMXBean, "UseCompressedOops");
useCompressedOops = (String) valueMethod.invoke(useCompressedOopsVmOptionObject);
} catch (Exception ignored) {
}
try {
Object useG1GCVmOptionObject = vmOptionMethod.invoke(hotSpotDiagnosticMXBean, "UseG1GC");
useG1GC = (String) valueMethod.invoke(useG1GCVmOptionObject);
} catch (Exception ignored) {
}
try {
Object initialHeapSizeVmOptionObject = vmOptionMethod.invoke(hotSpotDiagnosticMXBean, "InitialHeapSize");
configuredInitialHeapSize = Long.parseLong((String) valueMethod.invoke(initialHeapSizeVmOptionObject));
} catch (Exception ignored) {
}
try {
Object maxHeapSizeVmOptionObject = vmOptionMethod.invoke(hotSpotDiagnosticMXBean, "MaxHeapSize");
configuredMaxHeapSize = Long.parseLong((String) valueMethod.invoke(maxHeapSizeVmOptionObject));
} catch (Exception ignored) {
}
try {
Object useSerialGCVmOptionObject = vmOptionMethod.invoke(hotSpotDiagnosticMXBean, "UseSerialGC");
useSerialGC = (String) valueMethod.invoke(useSerialGCVmOptionObject);
} catch (Exception ignored) {
}
} catch (Exception ignored) {
}
INSTANCE = new JvmInfo(pid, System.getProperty("java.version"), runtimeMXBean.getVmName(), runtimeMXBean.getVmVersion(),
runtimeMXBean.getVmVendor(), runtimeMXBean.getStartTime(), configuredInitialHeapSize, configuredMaxHeapSize,
mem, inputArguments, bootClassPath, classPath, systemProperties, gcCollectors, memoryPools, onError, onOutOfMemoryError,
useCompressedOops, useG1GC, useSerialGC);
}
public static JvmInfo jvmInfo() {
SecurityManager sm = System.getSecurityManager();
if (sm != null) {
sm.checkPermission(new ManagementPermission("monitor"));
sm.checkPropertyAccess("*");
}
return INSTANCE;
}
private final long pid;
private final String version;
private final String vmName;
private final String vmVersion;
private final String vmVendor;
private final long startTime;
private final long configuredInitialHeapSize;
private final long configuredMaxHeapSize;
private final Mem mem;
private final String[] inputArguments;
private final String bootClassPath;
private final String classPath;
private final Map<String, String> systemProperties;
private final String[] gcCollectors;
private final String[] memoryPools;
private final String onError;
private final String onOutOfMemoryError;
private final String useCompressedOops;
private final String useG1GC;
private final String useSerialGC;
private JvmInfo(long pid, String version, String vmName, String vmVersion, String vmVendor, long startTime,
long configuredInitialHeapSize, long configuredMaxHeapSize, Mem mem, String[] inputArguments, String bootClassPath,
String classPath, Map<String, String> systemProperties, String[] gcCollectors, String[] memoryPools, String onError,
String onOutOfMemoryError, String useCompressedOops, String useG1GC, String useSerialGC) {
this.pid = pid;
this.version = version;
this.vmName = vmName;
this.vmVersion = vmVersion;
this.vmVendor = vmVendor;
this.startTime = startTime;
this.configuredInitialHeapSize = configuredInitialHeapSize;
this.configuredMaxHeapSize = configuredMaxHeapSize;
this.mem = mem;
this.inputArguments = inputArguments;
this.bootClassPath = bootClassPath;
this.classPath = classPath;
this.systemProperties = systemProperties;
this.gcCollectors = gcCollectors;
this.memoryPools = memoryPools;
this.onError = onError;
this.onOutOfMemoryError = onOutOfMemoryError;
this.useCompressedOops = useCompressedOops;
this.useG1GC = useG1GC;
this.useSerialGC = useSerialGC;
}
public JvmInfo(StreamInput in) throws IOException {
pid = in.readLong();
version = in.readString();
vmName = in.readString();
vmVersion = in.readString();
vmVendor = in.readString();
startTime = in.readLong();
inputArguments = new String[in.readInt()];
for (int i = 0; i < inputArguments.length; i++) {
inputArguments[i] = in.readString();
}
bootClassPath = in.readString();
classPath = in.readString();
systemProperties = in.readMap(StreamInput::readString, StreamInput::readString);
mem = new Mem(in);
gcCollectors = in.readStringArray();
memoryPools = in.readStringArray();
useCompressedOops = in.readString();
//the following members are only used locally for bootstrap checks, never serialized nor printed out
this.configuredMaxHeapSize = -1;
this.configuredInitialHeapSize = -1;
this.onError = null;
this.onOutOfMemoryError = null;
this.useG1GC = "unknown";
this.useSerialGC = "unknown";
}
@Override
public void writeTo(StreamOutput out) throws IOException {
out.writeLong(pid);
out.writeString(version);
out.writeString(vmName);
out.writeString(vmVersion);
out.writeString(vmVendor);
out.writeLong(startTime);
out.writeInt(inputArguments.length);
for (String inputArgument : inputArguments) {
out.writeString(inputArgument);
}
out.writeString(bootClassPath);
out.writeString(classPath);
out.writeVInt(this.systemProperties.size());
for (Map.Entry<String, String> entry : systemProperties.entrySet()) {
out.writeString(entry.getKey());
out.writeString(entry.getValue());
}
mem.writeTo(out);
out.writeStringArray(gcCollectors);
out.writeStringArray(memoryPools);
out.writeString(useCompressedOops);
}
/**
* The process id.
*/
public long pid() {
return this.pid;
}
/**
* The process id.
*/
public long getPid() {
return pid;
}
public String version() {
return this.version;
}
public String getVersion() {
return this.version;
}
public int versionAsInteger() {
try {
int i = 0;
String sVersion = "";
for (; i < version.length(); i++) {
if (!Character.isDigit(version.charAt(i)) && version.charAt(i) != '.') {
break;
}
if (version.charAt(i) != '.') {
sVersion += version.charAt(i);
}
}
if (i == 0) {
return -1;
}
return Integer.parseInt(sVersion);
} catch (Exception e) {
return -1;
}
}
public int versionUpdatePack() {
try {
int i = 0;
String sVersion = "";
for (; i < version.length(); i++) {
if (!Character.isDigit(version.charAt(i)) && version.charAt(i) != '.') {
break;
}
if (version.charAt(i) != '.') {
sVersion += version.charAt(i);
}
}
if (i == 0) {
return -1;
}
Integer.parseInt(sVersion);
int from;
if (version.charAt(i) == '_') {
// 1.7.0_4
from = ++i;
} else if (version.charAt(i) == '-' && version.charAt(i + 1) == 'u') {
// 1.7.0-u2-b21
i = i + 2;
from = i;
} else {
return -1;
}
for (; i < version.length(); i++) {
if (!Character.isDigit(version.charAt(i)) && version.charAt(i) != '.') {
break;
}
}
if (from == i) {
return -1;
}
return Integer.parseInt(version.substring(from, i));
} catch (Exception e) {
return -1;
}
}
public String getVmName() {
return this.vmName;
}
public String getVmVersion() {
return this.vmVersion;
}
public String getVmVendor() {
return this.vmVendor;
}
public long getStartTime() {
return this.startTime;
}
public Mem getMem() {
return this.mem;
}
public String[] getInputArguments() {
return this.inputArguments;
}
public String getBootClassPath() {
return this.bootClassPath;
}
public String getClassPath() {
return this.classPath;
}
public Map<String, String> getSystemProperties() {
return this.systemProperties;
}
public long getConfiguredInitialHeapSize() {
return configuredInitialHeapSize;
}
public long getConfiguredMaxHeapSize() {
return configuredMaxHeapSize;
}
public String onError() {
return onError;
}
public String onOutOfMemoryError() {
return onOutOfMemoryError;
}
/**
* The value of the JVM flag UseCompressedOops, if available otherwise
* "unknown". The value "unknown" indicates that an attempt was
* made to obtain the value of the flag on this JVM and the attempt
* failed.
*
* @return the value of the JVM flag UseCompressedOops or "unknown"
*/
public String useCompressedOops() {
return this.useCompressedOops;
}
public String useG1GC() {
return this.useG1GC;
}
public String useSerialGC() {
return this.useSerialGC;
}
public String[] getGcCollectors() {
return gcCollectors;
}
public String[] getMemoryPools() {
return memoryPools;
}
@Override
public XContentBuilder toXContent(XContentBuilder builder, Params params) throws IOException {
builder.startObject(Fields.JVM);
builder.field(Fields.PID, pid);
builder.field(Fields.VERSION, version);
builder.field(Fields.VM_NAME, vmName);
builder.field(Fields.VM_VERSION, vmVersion);
builder.field(Fields.VM_VENDOR, vmVendor);
builder.dateField(Fields.START_TIME_IN_MILLIS, Fields.START_TIME, startTime);
builder.startObject(Fields.MEM);
builder.byteSizeField(Fields.HEAP_INIT_IN_BYTES, Fields.HEAP_INIT, mem.heapInit);
builder.byteSizeField(Fields.HEAP_MAX_IN_BYTES, Fields.HEAP_MAX, mem.heapMax);
builder.byteSizeField(Fields.NON_HEAP_INIT_IN_BYTES, Fields.NON_HEAP_INIT, mem.nonHeapInit);
builder.byteSizeField(Fields.NON_HEAP_MAX_IN_BYTES, Fields.NON_HEAP_MAX, mem.nonHeapMax);
builder.byteSizeField(Fields.DIRECT_MAX_IN_BYTES, Fields.DIRECT_MAX, mem.directMemoryMax);
builder.endObject();
builder.array(Fields.GC_COLLECTORS, gcCollectors);
builder.array(Fields.MEMORY_POOLS, memoryPools);
builder.field(Fields.USING_COMPRESSED_OOPS, useCompressedOops);
builder.field(Fields.INPUT_ARGUMENTS, inputArguments);
builder.endObject();
return builder;
}
static final class Fields {
static final String JVM = "jvm";
static final String PID = "pid";
static final String VERSION = "version";
static final String VM_NAME = "vm_name";
static final String VM_VERSION = "vm_version";
static final String VM_VENDOR = "vm_vendor";
static final String START_TIME = "start_time";
static final String START_TIME_IN_MILLIS = "start_time_in_millis";
static final String MEM = "mem";
static final String HEAP_INIT = "heap_init";
static final String HEAP_INIT_IN_BYTES = "heap_init_in_bytes";
static final String HEAP_MAX = "heap_max";
static final String HEAP_MAX_IN_BYTES = "heap_max_in_bytes";
static final String NON_HEAP_INIT = "non_heap_init";
static final String NON_HEAP_INIT_IN_BYTES = "non_heap_init_in_bytes";
static final String NON_HEAP_MAX = "non_heap_max";
static final String NON_HEAP_MAX_IN_BYTES = "non_heap_max_in_bytes";
static final String DIRECT_MAX = "direct_max";
static final String DIRECT_MAX_IN_BYTES = "direct_max_in_bytes";
static final String GC_COLLECTORS = "gc_collectors";
static final String MEMORY_POOLS = "memory_pools";
static final String USING_COMPRESSED_OOPS = "using_compressed_ordinary_object_pointers";
static final String INPUT_ARGUMENTS = "input_arguments";
}
public static class Mem implements Writeable {
private final long heapInit;
private final long heapMax;
private final long nonHeapInit;
private final long nonHeapMax;
private final long directMemoryMax;
public Mem(long heapInit, long heapMax, long nonHeapInit, long nonHeapMax, long directMemoryMax) {
this.heapInit = heapInit;
this.heapMax = heapMax;
this.nonHeapInit = nonHeapInit;
this.nonHeapMax = nonHeapMax;
this.directMemoryMax = directMemoryMax;
}
public Mem(StreamInput in) throws IOException {
this.heapInit = in.readVLong();
this.heapMax = in.readVLong();
this.nonHeapInit = in.readVLong();
this.nonHeapMax = in.readVLong();
this.directMemoryMax = in.readVLong();
}
@Override
public void writeTo(StreamOutput out) throws IOException {
out.writeVLong(heapInit);
out.writeVLong(heapMax);
out.writeVLong(nonHeapInit);
out.writeVLong(nonHeapMax);
out.writeVLong(directMemoryMax);
}
public ByteSizeValue getHeapInit() {
return new ByteSizeValue(heapInit);
}
public ByteSizeValue getHeapMax() {
return new ByteSizeValue(heapMax);
}
public ByteSizeValue getNonHeapInit() {
return new ByteSizeValue(nonHeapInit);
}
public ByteSizeValue getNonHeapMax() {
return new ByteSizeValue(nonHeapMax);
}
public ByteSizeValue getDirectMemoryMax() {
return new ByteSizeValue(directMemoryMax);
}
}
}