/*
* 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.Version;
import org.elasticsearch.common.Strings;
import org.elasticsearch.common.io.stream.StreamInput;
import org.elasticsearch.common.io.stream.StreamOutput;
import org.elasticsearch.common.io.stream.Streamable;
import org.elasticsearch.common.unit.ByteSizeValue;
import org.elasticsearch.common.xcontent.ToXContent;
import org.elasticsearch.common.xcontent.XContentBuilder;
import org.elasticsearch.common.xcontent.XContentBuilderString;
import java.io.IOException;
import java.lang.management.GarbageCollectorMXBean;
import java.lang.management.ManagementFactory;
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.HashMap;
import java.util.List;
import java.util.Map;
/**
*
*/
public class JvmInfo implements Streamable, 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;
}
JvmInfo info = new JvmInfo();
info.pid = pid;
info.startTime = runtimeMXBean.getStartTime();
info.version = runtimeMXBean.getSystemProperties().get("java.version");
info.vmName = runtimeMXBean.getVmName();
info.vmVendor = runtimeMXBean.getVmVendor();
info.vmVersion = runtimeMXBean.getVmVersion();
info.mem = new Mem();
info.mem.heapInit = memoryMXBean.getHeapMemoryUsage().getInit() < 0 ? 0 : memoryMXBean.getHeapMemoryUsage().getInit();
info.mem.heapMax = memoryMXBean.getHeapMemoryUsage().getMax() < 0 ? 0 : memoryMXBean.getHeapMemoryUsage().getMax();
info.mem.nonHeapInit = memoryMXBean.getNonHeapMemoryUsage().getInit() < 0 ? 0 : memoryMXBean.getNonHeapMemoryUsage().getInit();
info.mem.nonHeapMax = memoryMXBean.getNonHeapMemoryUsage().getMax() < 0 ? 0 : memoryMXBean.getNonHeapMemoryUsage().getMax();
try {
Class<?> vmClass = Class.forName("sun.misc.VM");
info.mem.directMemoryMax = (Long) vmClass.getMethod("maxDirectMemory").invoke(null);
} catch (Throwable t) {
// ignore
}
info.inputArguments = runtimeMXBean.getInputArguments().toArray(new String[runtimeMXBean.getInputArguments().size()]);
try {
info.bootClassPath = runtimeMXBean.getBootClassPath();
} catch (UnsupportedOperationException e) {
// oracle java 9
info.bootClassPath = System.getProperty("sun.boot.class.path");
if (info.bootClassPath == null) {
// something else
info.bootClassPath = "<unknown>";
}
}
info.classPath = runtimeMXBean.getClassPath();
info.systemProperties = runtimeMXBean.getSystemProperties();
List<GarbageCollectorMXBean> gcMxBeans = ManagementFactory.getGarbageCollectorMXBeans();
info.gcCollectors = new String[gcMxBeans.size()];
for (int i = 0; i < gcMxBeans.size(); i++) {
GarbageCollectorMXBean gcMxBean = gcMxBeans.get(i);
info.gcCollectors[i] = gcMxBean.getName();
}
List<MemoryPoolMXBean> memoryPoolMXBeans = ManagementFactory.getMemoryPoolMXBeans();
info.memoryPools = new String[memoryPoolMXBeans.size()];
for (int i = 0; i < memoryPoolMXBeans.size(); i++) {
MemoryPoolMXBean memoryPoolMXBean = memoryPoolMXBeans.get(i);
info.memoryPools[i] = memoryPoolMXBean.getName();
}
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);
Object useCompressedOopsVmOption = vmOptionMethod.invoke(hotSpotDiagnosticMXBean, "UseCompressedOops");
Method valueMethod = vmOptionClazz.getMethod("getValue");
info.useCompressedOops = (String)valueMethod.invoke(useCompressedOopsVmOption);
} catch (Throwable t) {
// unable to deduce the state of compressed oops
info.useCompressedOops = "unknown";
}
INSTANCE = info;
}
public static JvmInfo jvmInfo() {
return INSTANCE;
}
long pid = -1;
String version = "";
String vmName = "";
String vmVersion = "";
String vmVendor = "";
long startTime = -1;
Mem mem;
String[] inputArguments;
String bootClassPath;
String classPath;
Map<String, String> systemProperties;
String[] gcCollectors = Strings.EMPTY_ARRAY;
String[] memoryPools = Strings.EMPTY_ARRAY;
private String useCompressedOops;
private JvmInfo() {
}
/**
* 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;
}
/**
* The value of the JVM flag UseCompressedOops, if available otherwise
* "unknown" or null. The value "unknown" indicates that an attempt
* was made to obtain the value of the flag on this JVM and the
* attempt failed. The value null is can happen when streaming a
* response that does not contain a value for the this field.
*
* @return the value of the JVM flag UseCompressedOops or "unknown"
*/
public String useCompressedOops() {
return this.useCompressedOops;
}
@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.dateValueField(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.field(Fields.GC_COLLECTORS, gcCollectors);
builder.field(Fields.MEMORY_POOLS, memoryPools);
if (useCompressedOops != null) {
builder.field(Fields.USING_COMPRESSED_OOPS, useCompressedOops);
}
builder.endObject();
return builder;
}
static final class Fields {
static final XContentBuilderString JVM = new XContentBuilderString("jvm");
static final XContentBuilderString PID = new XContentBuilderString("pid");
static final XContentBuilderString VERSION = new XContentBuilderString("version");
static final XContentBuilderString VM_NAME = new XContentBuilderString("vm_name");
static final XContentBuilderString VM_VERSION = new XContentBuilderString("vm_version");
static final XContentBuilderString VM_VENDOR = new XContentBuilderString("vm_vendor");
static final XContentBuilderString START_TIME = new XContentBuilderString("start_time");
static final XContentBuilderString START_TIME_IN_MILLIS = new XContentBuilderString("start_time_in_millis");
static final XContentBuilderString MEM = new XContentBuilderString("mem");
static final XContentBuilderString HEAP_INIT = new XContentBuilderString("heap_init");
static final XContentBuilderString HEAP_INIT_IN_BYTES = new XContentBuilderString("heap_init_in_bytes");
static final XContentBuilderString HEAP_MAX = new XContentBuilderString("heap_max");
static final XContentBuilderString HEAP_MAX_IN_BYTES = new XContentBuilderString("heap_max_in_bytes");
static final XContentBuilderString NON_HEAP_INIT = new XContentBuilderString("non_heap_init");
static final XContentBuilderString NON_HEAP_INIT_IN_BYTES = new XContentBuilderString("non_heap_init_in_bytes");
static final XContentBuilderString NON_HEAP_MAX = new XContentBuilderString("non_heap_max");
static final XContentBuilderString NON_HEAP_MAX_IN_BYTES = new XContentBuilderString("non_heap_max_in_bytes");
static final XContentBuilderString DIRECT_MAX = new XContentBuilderString("direct_max");
static final XContentBuilderString DIRECT_MAX_IN_BYTES = new XContentBuilderString("direct_max_in_bytes");
static final XContentBuilderString GC_COLLECTORS = new XContentBuilderString("gc_collectors");
static final XContentBuilderString MEMORY_POOLS = new XContentBuilderString("memory_pools");
static final XContentBuilderString USING_COMPRESSED_OOPS = new XContentBuilderString("using_compressed_ordinary_object_pointers");
}
public static JvmInfo readJvmInfo(StreamInput in) throws IOException {
JvmInfo jvmInfo = new JvmInfo();
jvmInfo.readFrom(in);
return jvmInfo;
}
@Override
public void readFrom(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 = new HashMap<>();
int size = in.readInt();
for (int i = 0; i < size; i++) {
systemProperties.put(in.readString(), in.readString());
}
mem = new Mem();
mem.readFrom(in);
gcCollectors = in.readStringArray();
memoryPools = in.readStringArray();
if (in.getVersion().onOrAfter(Version.V_2_2_0)) {
useCompressedOops = in.readOptionalString();
} else {
useCompressedOops = null;
}
}
@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.writeInt(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);
if (out.getVersion().onOrAfter(Version.V_2_2_0)) {
out.writeOptionalString(useCompressedOops);
}
}
public static class Mem implements Streamable {
long heapInit = 0;
long heapMax = 0;
long nonHeapInit = 0;
long nonHeapMax = 0;
long directMemoryMax = 0;
Mem() {
}
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);
}
@Override
public void readFrom(StreamInput in) throws IOException {
heapInit = in.readVLong();
heapMax = in.readVLong();
nonHeapInit = in.readVLong();
nonHeapMax = in.readVLong();
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);
}
}
}