/*
* 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 com.google.common.collect.Iterators;
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.unit.TimeValue;
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.*;
import java.util.ArrayList;
import java.util.Iterator;
import java.util.List;
import java.util.concurrent.TimeUnit;
/**
*
*/
public class JvmStats implements Streamable, ToXContent {
private final static RuntimeMXBean runtimeMXBean;
private final static MemoryMXBean memoryMXBean;
private final static ThreadMXBean threadMXBean;
private final static ClassLoadingMXBean classLoadingMXBean;
static {
runtimeMXBean = ManagementFactory.getRuntimeMXBean();
memoryMXBean = ManagementFactory.getMemoryMXBean();
threadMXBean = ManagementFactory.getThreadMXBean();
classLoadingMXBean = ManagementFactory.getClassLoadingMXBean();
}
public static JvmStats jvmStats() {
JvmStats stats = new JvmStats(System.currentTimeMillis(), runtimeMXBean.getUptime());
stats.mem = new Mem();
MemoryUsage memUsage = memoryMXBean.getHeapMemoryUsage();
stats.mem.heapUsed = memUsage.getUsed() < 0 ? 0 : memUsage.getUsed();
stats.mem.heapCommitted = memUsage.getCommitted() < 0 ? 0 : memUsage.getCommitted();
stats.mem.heapMax = memUsage.getMax() < 0 ? 0 : memUsage.getMax();
memUsage = memoryMXBean.getNonHeapMemoryUsage();
stats.mem.nonHeapUsed = memUsage.getUsed() < 0 ? 0 : memUsage.getUsed();
stats.mem.nonHeapCommitted = memUsage.getCommitted() < 0 ? 0 : memUsage.getCommitted();
List<MemoryPoolMXBean> memoryPoolMXBeans = ManagementFactory.getMemoryPoolMXBeans();
List<MemoryPool> pools = new ArrayList<>();
for (int i = 0; i < memoryPoolMXBeans.size(); i++) {
try {
MemoryPoolMXBean memoryPoolMXBean = memoryPoolMXBeans.get(i);
MemoryUsage usage = memoryPoolMXBean.getUsage();
MemoryUsage peakUsage = memoryPoolMXBean.getPeakUsage();
String name = GcNames.getByMemoryPoolName(memoryPoolMXBean.getName(), null);
if (name == null) { // if we can't resolve it, its not interesting.... (Per Gen, Code Cache)
continue;
}
pools.add(new MemoryPool(name,
usage.getUsed() < 0 ? 0 : usage.getUsed(),
usage.getMax() < 0 ? 0 : usage.getMax(),
peakUsage.getUsed() < 0 ? 0 : peakUsage.getUsed(),
peakUsage.getMax() < 0 ? 0 : peakUsage.getMax()
));
} catch (OutOfMemoryError err) {
throw err; // rethrow
} catch (Throwable ex) {
/* ignore some JVMs might barf here with:
* java.lang.InternalError: Memory Pool not found
* we just omit the pool in that case!*/
}
}
stats.mem.pools = pools.toArray(new MemoryPool[pools.size()]);
stats.threads = new Threads();
stats.threads.count = threadMXBean.getThreadCount();
stats.threads.peakCount = threadMXBean.getPeakThreadCount();
List<GarbageCollectorMXBean> gcMxBeans = ManagementFactory.getGarbageCollectorMXBeans();
stats.gc = new GarbageCollectors();
stats.gc.collectors = new GarbageCollector[gcMxBeans.size()];
for (int i = 0; i < stats.gc.collectors.length; i++) {
GarbageCollectorMXBean gcMxBean = gcMxBeans.get(i);
stats.gc.collectors[i] = new GarbageCollector();
stats.gc.collectors[i].name = GcNames.getByGcName(gcMxBean.getName(), gcMxBean.getName());
stats.gc.collectors[i].collectionCount = gcMxBean.getCollectionCount();
stats.gc.collectors[i].collectionTime = gcMxBean.getCollectionTime();
}
try {
List<BufferPoolMXBean> bufferPools = ManagementFactory.getPlatformMXBeans(BufferPoolMXBean.class);
stats.bufferPools = new ArrayList<>(bufferPools.size());
for (BufferPoolMXBean bufferPool : bufferPools) {
stats.bufferPools.add(new BufferPool(bufferPool.getName(), bufferPool.getCount(), bufferPool.getTotalCapacity(), bufferPool.getMemoryUsed()));
}
} catch (Throwable t) {
// buffer pools are not available
}
stats.classes = new Classes();
stats.classes.loadedClassCount = classLoadingMXBean.getLoadedClassCount();
stats.classes.totalLoadedClassCount = classLoadingMXBean.getTotalLoadedClassCount();
stats.classes.unloadedClassCount = classLoadingMXBean.getUnloadedClassCount();
return stats;
}
long timestamp = -1;
long uptime;
Mem mem;
Threads threads;
GarbageCollectors gc;
List<BufferPool> bufferPools;
Classes classes;
private JvmStats() {
}
public JvmStats(long timestamp, long uptime) {
this.timestamp = timestamp;
this.uptime = uptime;
}
public long getTimestamp() {
return timestamp;
}
public TimeValue getUptime() {
return new TimeValue(uptime);
}
public Mem getMem() {
return this.mem;
}
public Threads getThreads() {
return threads;
}
public GarbageCollectors getGc() {
return gc;
}
public List<BufferPool> getBufferPools() {
return bufferPools;
}
public Classes getClasses() {
return classes;
}
@Override
public XContentBuilder toXContent(XContentBuilder builder, Params params) throws IOException {
builder.startObject(Fields.JVM);
builder.field(Fields.TIMESTAMP, timestamp);
builder.timeValueField(Fields.UPTIME_IN_MILLIS, Fields.UPTIME, uptime);
if (mem != null) {
builder.startObject(Fields.MEM);
builder.byteSizeField(Fields.HEAP_USED_IN_BYTES, Fields.HEAP_USED, mem.heapUsed);
if (mem.getHeapUsedPercent() >= 0) {
builder.field(Fields.HEAP_USED_PERCENT, mem.getHeapUsedPercent());
}
builder.byteSizeField(Fields.HEAP_COMMITTED_IN_BYTES, Fields.HEAP_COMMITTED, mem.heapCommitted);
builder.byteSizeField(Fields.HEAP_MAX_IN_BYTES, Fields.HEAP_MAX, mem.heapMax);
builder.byteSizeField(Fields.NON_HEAP_USED_IN_BYTES, Fields.NON_HEAP_USED, mem.nonHeapUsed);
builder.byteSizeField(Fields.NON_HEAP_COMMITTED_IN_BYTES, Fields.NON_HEAP_COMMITTED, mem.nonHeapCommitted);
builder.startObject(Fields.POOLS);
for (MemoryPool pool : mem) {
builder.startObject(pool.getName(), XContentBuilder.FieldCaseConversion.NONE);
builder.byteSizeField(Fields.USED_IN_BYTES, Fields.USED, pool.used);
builder.byteSizeField(Fields.MAX_IN_BYTES, Fields.MAX, pool.max);
builder.byteSizeField(Fields.PEAK_USED_IN_BYTES, Fields.PEAK_USED, pool.peakUsed);
builder.byteSizeField(Fields.PEAK_MAX_IN_BYTES, Fields.PEAK_MAX, pool.peakMax);
builder.endObject();
}
builder.endObject();
builder.endObject();
}
if (threads != null) {
builder.startObject(Fields.THREADS);
builder.field(Fields.COUNT, threads.getCount());
builder.field(Fields.PEAK_COUNT, threads.getPeakCount());
builder.endObject();
}
if (gc != null) {
builder.startObject(Fields.GC);
builder.startObject(Fields.COLLECTORS);
for (GarbageCollector collector : gc) {
builder.startObject(collector.getName(), XContentBuilder.FieldCaseConversion.NONE);
builder.field(Fields.COLLECTION_COUNT, collector.getCollectionCount());
builder.timeValueField(Fields.COLLECTION_TIME_IN_MILLIS, Fields.COLLECTION_TIME, collector.collectionTime);
builder.endObject();
}
builder.endObject();
builder.endObject();
}
if (bufferPools != null) {
builder.startObject(Fields.BUFFER_POOLS);
for (BufferPool bufferPool : bufferPools) {
builder.startObject(bufferPool.getName(), XContentBuilder.FieldCaseConversion.NONE);
builder.field(Fields.COUNT, bufferPool.getCount());
builder.byteSizeField(Fields.USED_IN_BYTES, Fields.USED, bufferPool.used);
builder.byteSizeField(Fields.TOTAL_CAPACITY_IN_BYTES, Fields.TOTAL_CAPACITY, bufferPool.totalCapacity);
builder.endObject();
}
builder.endObject();
}
if (classes != null) {
builder.startObject(Fields.CLASSES);
builder.field(Fields.CURRENT_LOADED_COUNT, classes.getLoadedClassCount());
builder.field(Fields.TOTAL_LOADED_COUNT, classes.getTotalLoadedClassCount());
builder.field(Fields.TOTAL_UNLOADED_COUNT, classes.getUnloadedClassCount());
builder.endObject();
}
builder.endObject();
return builder;
}
static final class Fields {
static final XContentBuilderString JVM = new XContentBuilderString("jvm");
static final XContentBuilderString TIMESTAMP = new XContentBuilderString("timestamp");
static final XContentBuilderString UPTIME = new XContentBuilderString("uptime");
static final XContentBuilderString UPTIME_IN_MILLIS = new XContentBuilderString("uptime_in_millis");
static final XContentBuilderString MEM = new XContentBuilderString("mem");
static final XContentBuilderString HEAP_USED = new XContentBuilderString("heap_used");
static final XContentBuilderString HEAP_USED_IN_BYTES = new XContentBuilderString("heap_used_in_bytes");
static final XContentBuilderString HEAP_USED_PERCENT = new XContentBuilderString("heap_used_percent");
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 HEAP_COMMITTED = new XContentBuilderString("heap_committed");
static final XContentBuilderString HEAP_COMMITTED_IN_BYTES = new XContentBuilderString("heap_committed_in_bytes");
static final XContentBuilderString NON_HEAP_USED = new XContentBuilderString("non_heap_used");
static final XContentBuilderString NON_HEAP_USED_IN_BYTES = new XContentBuilderString("non_heap_used_in_bytes");
static final XContentBuilderString NON_HEAP_COMMITTED = new XContentBuilderString("non_heap_committed");
static final XContentBuilderString NON_HEAP_COMMITTED_IN_BYTES = new XContentBuilderString("non_heap_committed_in_bytes");
static final XContentBuilderString POOLS = new XContentBuilderString("pools");
static final XContentBuilderString USED = new XContentBuilderString("used");
static final XContentBuilderString USED_IN_BYTES = new XContentBuilderString("used_in_bytes");
static final XContentBuilderString MAX = new XContentBuilderString("max");
static final XContentBuilderString MAX_IN_BYTES = new XContentBuilderString("max_in_bytes");
static final XContentBuilderString PEAK_USED = new XContentBuilderString("peak_used");
static final XContentBuilderString PEAK_USED_IN_BYTES = new XContentBuilderString("peak_used_in_bytes");
static final XContentBuilderString PEAK_MAX = new XContentBuilderString("peak_max");
static final XContentBuilderString PEAK_MAX_IN_BYTES = new XContentBuilderString("peak_max_in_bytes");
static final XContentBuilderString THREADS = new XContentBuilderString("threads");
static final XContentBuilderString COUNT = new XContentBuilderString("count");
static final XContentBuilderString PEAK_COUNT = new XContentBuilderString("peak_count");
static final XContentBuilderString GC = new XContentBuilderString("gc");
static final XContentBuilderString COLLECTORS = new XContentBuilderString("collectors");
static final XContentBuilderString COLLECTION_COUNT = new XContentBuilderString("collection_count");
static final XContentBuilderString COLLECTION_TIME = new XContentBuilderString("collection_time");
static final XContentBuilderString COLLECTION_TIME_IN_MILLIS = new XContentBuilderString("collection_time_in_millis");
static final XContentBuilderString BUFFER_POOLS = new XContentBuilderString("buffer_pools");
static final XContentBuilderString NAME = new XContentBuilderString("name");
static final XContentBuilderString TOTAL_CAPACITY = new XContentBuilderString("total_capacity");
static final XContentBuilderString TOTAL_CAPACITY_IN_BYTES = new XContentBuilderString("total_capacity_in_bytes");
static final XContentBuilderString CLASSES = new XContentBuilderString("classes");
static final XContentBuilderString CURRENT_LOADED_COUNT = new XContentBuilderString("current_loaded_count");
static final XContentBuilderString TOTAL_LOADED_COUNT = new XContentBuilderString("total_loaded_count");
static final XContentBuilderString TOTAL_UNLOADED_COUNT = new XContentBuilderString("total_unloaded_count");
}
public static JvmStats readJvmStats(StreamInput in) throws IOException {
JvmStats jvmStats = new JvmStats();
jvmStats.readFrom(in);
return jvmStats;
}
@Override
public void readFrom(StreamInput in) throws IOException {
timestamp = in.readVLong();
uptime = in.readVLong();
mem = Mem.readMem(in);
threads = Threads.readThreads(in);
gc = GarbageCollectors.readGarbageCollectors(in);
if (in.readBoolean()) {
int size = in.readVInt();
bufferPools = new ArrayList<>(size);
for (int i = 0; i < size; i++) {
BufferPool bufferPool = new BufferPool();
bufferPool.readFrom(in);
bufferPools.add(bufferPool);
}
}
}
@Override
public void writeTo(StreamOutput out) throws IOException {
out.writeVLong(timestamp);
out.writeVLong(uptime);
mem.writeTo(out);
threads.writeTo(out);
gc.writeTo(out);
if (bufferPools == null) {
out.writeBoolean(false);
} else {
out.writeBoolean(true);
out.writeVInt(bufferPools.size());
for (BufferPool bufferPool : bufferPools) {
bufferPool.writeTo(out);
}
}
}
public static class GarbageCollectors implements Streamable, Iterable<GarbageCollector> {
GarbageCollector[] collectors;
GarbageCollectors() {
}
public static GarbageCollectors readGarbageCollectors(StreamInput in) throws IOException {
GarbageCollectors collectors = new GarbageCollectors();
collectors.readFrom(in);
return collectors;
}
@Override
public void readFrom(StreamInput in) throws IOException {
collectors = new GarbageCollector[in.readVInt()];
for (int i = 0; i < collectors.length; i++) {
collectors[i] = GarbageCollector.readGarbageCollector(in);
}
}
@Override
public void writeTo(StreamOutput out) throws IOException {
out.writeVInt(collectors.length);
for (GarbageCollector gc : collectors) {
gc.writeTo(out);
}
}
public GarbageCollector[] getCollectors() {
return this.collectors;
}
@Override
public Iterator<GarbageCollector> iterator() {
return Iterators.forArray(collectors);
}
}
public static class GarbageCollector implements Streamable {
String name;
long collectionCount;
long collectionTime;
GarbageCollector() {
}
public static GarbageCollector readGarbageCollector(StreamInput in) throws IOException {
GarbageCollector gc = new GarbageCollector();
gc.readFrom(in);
return gc;
}
@Override
public void readFrom(StreamInput in) throws IOException {
name = in.readString();
collectionCount = in.readVLong();
collectionTime = in.readVLong();
}
@Override
public void writeTo(StreamOutput out) throws IOException {
out.writeString(name);
out.writeVLong(collectionCount);
out.writeVLong(collectionTime);
}
public String getName() {
return this.name;
}
public long getCollectionCount() {
return this.collectionCount;
}
public TimeValue getCollectionTime() {
return new TimeValue(collectionTime, TimeUnit.MILLISECONDS);
}
}
public static class Threads implements Streamable {
int count;
int peakCount;
Threads() {
}
public int getCount() {
return count;
}
public int getPeakCount() {
return peakCount;
}
public static Threads readThreads(StreamInput in) throws IOException {
Threads threads = new Threads();
threads.readFrom(in);
return threads;
}
@Override
public void readFrom(StreamInput in) throws IOException {
count = in.readVInt();
peakCount = in.readVInt();
}
@Override
public void writeTo(StreamOutput out) throws IOException {
out.writeVInt(count);
out.writeVInt(peakCount);
}
}
public static class MemoryPool implements Streamable {
String name;
long used;
long max;
long peakUsed;
long peakMax;
MemoryPool() {
}
public MemoryPool(String name, long used, long max, long peakUsed, long peakMax) {
this.name = name;
this.used = used;
this.max = max;
this.peakUsed = peakUsed;
this.peakMax = peakMax;
}
public static MemoryPool readMemoryPool(StreamInput in) throws IOException {
MemoryPool pool = new MemoryPool();
pool.readFrom(in);
return pool;
}
public String getName() {
return this.name;
}
public ByteSizeValue getUsed() {
return new ByteSizeValue(used);
}
public ByteSizeValue getMax() {
return new ByteSizeValue(max);
}
public ByteSizeValue getPeakUsed() {
return new ByteSizeValue(peakUsed);
}
public ByteSizeValue getPeakMax() {
return new ByteSizeValue(peakMax);
}
@Override
public void readFrom(StreamInput in) throws IOException {
name = in.readString();
used = in.readVLong();
max = in.readVLong();
peakUsed = in.readVLong();
peakMax = in.readVLong();
}
@Override
public void writeTo(StreamOutput out) throws IOException {
out.writeString(name);
out.writeVLong(used);
out.writeVLong(max);
out.writeVLong(peakUsed);
out.writeVLong(peakMax);
}
}
public static class Mem implements Streamable, Iterable<MemoryPool> {
long heapCommitted;
long heapUsed;
long heapMax;
long nonHeapCommitted;
long nonHeapUsed;
MemoryPool[] pools = new MemoryPool[0];
Mem() {
}
public static Mem readMem(StreamInput in) throws IOException {
Mem mem = new Mem();
mem.readFrom(in);
return mem;
}
@Override
public Iterator<MemoryPool> iterator() {
return Iterators.forArray(pools);
}
@Override
public void readFrom(StreamInput in) throws IOException {
heapCommitted = in.readVLong();
heapUsed = in.readVLong();
nonHeapCommitted = in.readVLong();
nonHeapUsed = in.readVLong();
heapMax = in.readVLong();
pools = new MemoryPool[in.readVInt()];
for (int i = 0; i < pools.length; i++) {
pools[i] = MemoryPool.readMemoryPool(in);
}
}
@Override
public void writeTo(StreamOutput out) throws IOException {
out.writeVLong(heapCommitted);
out.writeVLong(heapUsed);
out.writeVLong(nonHeapCommitted);
out.writeVLong(nonHeapUsed);
out.writeVLong(heapMax);
out.writeVInt(pools.length);
for (MemoryPool pool : pools) {
pool.writeTo(out);
}
}
public ByteSizeValue getHeapCommitted() {
return new ByteSizeValue(heapCommitted);
}
public ByteSizeValue getHeapUsed() {
return new ByteSizeValue(heapUsed);
}
/**
* returns the maximum heap size. 0 bytes signals unknown.
*/
public ByteSizeValue getHeapMax() {
return new ByteSizeValue(heapMax);
}
/**
* returns the heap usage in percent. -1 signals unknown.
*/
public short getHeapUsedPercent() {
if (heapMax == 0) {
return -1;
}
return (short) (heapUsed * 100 / heapMax);
}
public ByteSizeValue getNonHeapCommitted() {
return new ByteSizeValue(nonHeapCommitted);
}
public ByteSizeValue getNonHeapUsed() {
return new ByteSizeValue(nonHeapUsed);
}
}
public static class BufferPool implements Streamable {
String name;
long count;
long totalCapacity;
long used;
BufferPool() {
}
public BufferPool(String name, long count, long totalCapacity, long used) {
this.name = name;
this.count = count;
this.totalCapacity = totalCapacity;
this.used = used;
}
public String getName() {
return this.name;
}
public long getCount() {
return this.count;
}
public ByteSizeValue getTotalCapacity() {
return new ByteSizeValue(totalCapacity);
}
public ByteSizeValue getUsed() {
return new ByteSizeValue(used);
}
@Override
public void readFrom(StreamInput in) throws IOException {
name = in.readString();
count = in.readLong();
totalCapacity = in.readLong();
used = in.readLong();
}
@Override
public void writeTo(StreamOutput out) throws IOException {
out.writeString(name);
out.writeLong(count);
out.writeLong(totalCapacity);
out.writeLong(used);
}
}
public static class Classes implements Streamable {
long loadedClassCount;
long totalLoadedClassCount;
long unloadedClassCount;
Classes() {
}
public Classes(long loadedClassCount, long totalLoadedClassCount, long unloadedClassCount) {
this.loadedClassCount = loadedClassCount;
this.totalLoadedClassCount = totalLoadedClassCount;
this.unloadedClassCount = unloadedClassCount;
}
public long getLoadedClassCount() {
return loadedClassCount;
}
public long getTotalLoadedClassCount() {
return totalLoadedClassCount;
}
public long getUnloadedClassCount() {
return unloadedClassCount;
}
@Override
public void readFrom(StreamInput in) throws IOException {
loadedClassCount = in.readLong();
totalLoadedClassCount = in.readLong();
unloadedClassCount = in.readLong();
}
@Override
public void writeTo(StreamOutput out) throws IOException {
out.writeLong(loadedClassCount);
out.writeLong(totalLoadedClassCount);
out.writeLong(unloadedClassCount);
}
}
}