/*
* Licensed to ElasticSearch and Shay Banon 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.dump.heap;
import org.elasticsearch.common.inject.Inject;
import org.elasticsearch.common.inject.assistedinject.Assisted;
import org.elasticsearch.common.settings.Settings;
import org.elasticsearch.monitor.dump.Dump;
import org.elasticsearch.monitor.dump.DumpContributionFailedException;
import org.elasticsearch.monitor.dump.DumpContributor;
import java.lang.reflect.Method;
/**
*
*/
public class HeapDumpContributor implements DumpContributor {
public static final String HEAP_DUMP = "heap";
private final Method heapDumpMethod;
private final Object diagnosticMBean;
private final String name;
@Inject
public HeapDumpContributor(@Assisted String name, @Assisted Settings settings) {
this.name = name;
Method heapDumpMethod;
Object diagnosticMBean;
try {
Class managementFactoryClass = Class.forName("sun.management.ManagementFactory", true, HeapDumpContributor.class.getClassLoader());
Method method = managementFactoryClass.getMethod("getDiagnosticMXBean");
diagnosticMBean = method.invoke(null);
heapDumpMethod = diagnosticMBean.getClass().getMethod("dumpHeap", String.class, boolean.class);
} catch (Exception _ex) {
heapDumpMethod = null;
diagnosticMBean = null;
}
this.heapDumpMethod = heapDumpMethod;
this.diagnosticMBean = diagnosticMBean;
}
@Override
public String getName() {
return name;
}
@Override
public void contribute(Dump dump) throws DumpContributionFailedException {
if (heapDumpMethod == null) {
throw new DumpContributionFailedException(getName(), "Heap dump not enalbed on this JVM");
}
try {
heapDumpMethod.invoke(diagnosticMBean, dump.createFile("heap.hprof").getAbsolutePath(), true);
} catch (Exception e) {
throw new DumpContributionFailedException(getName(), "Failed to generate heap dump", e);
}
}
}