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/*
* MemoryReporter.java
*
* Created on July 25, 2005, 3:38 PM
*/
package com.sun.enterprise.admin.mbeans.jvm;
import com.sun.enterprise.util.i18n.StringManager;
import java.lang.management.GarbageCollectorMXBean;
import java.lang.management.ManagementFactory;
import java.lang.management.MemoryMXBean;
import java.lang.management.MemoryPoolMXBean;
import java.lang.management.MemoryUsage;
import java.lang.management.RuntimeMXBean;
import java.util.ArrayList;
import java.util.Iterator;
import java.util.List;
import java.util.Set;
import javax.management.MBeanServerConnection;
import javax.management.ObjectName;
/**
*/
class MemoryReporter {
private final MBeanServerConnection mbsc;
private RuntimeMXBean rmbean;
private MemoryMXBean mmbean;
private List<MemoryPoolMXBean> pools;
private List<GarbageCollectorMXBean> gcmbeans;
private final static StringManager sm = StringManager.getManager(MemoryReporter.class);
public MemoryReporter(final MBeanServerConnection mbsc) {
this.mbsc = mbsc;
}
public String getMemoryReport() {
init();
final StringBuilderNewLineAppender sb = new StringBuilderNewLineAppender(new StringBuilder());
sb.append(getMemoryPoolReport());
sb.append(getGarbageCollectionReport());
sb.append(getMemoryMXBeanReport());
return ( sb.toString() );
}
private void init() throws RuntimeException {
try {
this.rmbean = ManagementFactory.newPlatformMXBeanProxy(mbsc,
ManagementFactory.RUNTIME_MXBEAN_NAME,
RuntimeMXBean.class);
this.mmbean = ManagementFactory.newPlatformMXBeanProxy(mbsc,
ManagementFactory.MEMORY_MXBEAN_NAME,
MemoryMXBean.class);
ObjectName poolName = new ObjectName(ManagementFactory.MEMORY_POOL_MXBEAN_DOMAIN_TYPE+",*");;
ObjectName gcName = new ObjectName(ManagementFactory.GARBAGE_COLLECTOR_MXBEAN_DOMAIN_TYPE+",*");
Set mbeans = mbsc.queryNames(poolName, null);
if (mbeans != null) {
pools = new ArrayList<MemoryPoolMXBean>();
Iterator iterator = mbeans.iterator();
MemoryPoolMXBean p = null;
while (iterator.hasNext()) {
ObjectName objName = (ObjectName) iterator.next();
p = ManagementFactory.newPlatformMXBeanProxy(mbsc,
objName.getCanonicalName(),
MemoryPoolMXBean.class);
pools.add(p);
}
}
mbeans = mbsc.queryNames(gcName, null);
if (mbeans != null) {
gcmbeans = new ArrayList<GarbageCollectorMXBean>();
Iterator iterator = mbeans.iterator();
GarbageCollectorMXBean gc = null;
while (iterator.hasNext()) {
ObjectName objName = (ObjectName) iterator.next();
gc = ManagementFactory.newPlatformMXBeanProxy(mbsc,
objName.getCanonicalName(),
GarbageCollectorMXBean.class);
gcmbeans.add(gc);
}
}
} catch (final Exception e) {
throw new RuntimeException(e);
}
}
private String getMemoryPoolReport() {
final StringBuilderNewLineAppender sb = new StringBuilderNewLineAppender(new StringBuilder());
final long millis = rmbean.getUptime();
final String uptime = sm.getString("uptime", JVMInformationCollector.millis2HoursMinutesSeconds(millis));
sb.append(uptime);
for (final MemoryPoolMXBean m : pools) {
final String n = m.getName();
sb.append(sm.getString("memory.pool.name", n));
MemoryUsage mu = m.getUsage();
sb.append(mu2String(mu));
}
return ( sb.toString() );
}
private String mu2String(final MemoryUsage mu) {
final StringBuilderNewLineAppender sb = new StringBuilderNewLineAppender(new StringBuilder());
final String init = JVMInformationCollector.formatLong(mu.getInit());
sb.append(sm.getString("memory.usage.init", init));
final String comm = JVMInformationCollector.formatLong(mu.getCommitted());
sb.append(sm.getString("memory.usage.comm", comm));
final String max = JVMInformationCollector.formatLong(mu.getMax());
sb.append(sm.getString("memory.usage.max", max));
final String used = JVMInformationCollector.formatLong(mu.getUsed());
sb.append(sm.getString("memory.usage.used", used));
return ( sb.toString() );
}
private String getGarbageCollectionReport() {
final StringBuilderNewLineAppender sb = new StringBuilderNewLineAppender(new StringBuilder());
for (final GarbageCollectorMXBean m : gcmbeans) {
final String name = sm.getString("gc.name", m.getName());
sb.append(name);
final String cc = sm.getString("gc.numcol", JVMInformationCollector.formatLong(m.getCollectionCount()));
sb.append(cc);
final String gct = sm.getString("gc.coltime", JVMInformationCollector.millis2SecondsMillis(m.getCollectionTime()));
sb.append(gct);
}
return ( sb.toString() );
}
private String getMemoryMXBeanReport() {
final StringBuilderNewLineAppender sb = new StringBuilderNewLineAppender(new StringBuilder());
sb.append(sm.getString("heap.mem.usage"));
sb.append(mu2String(mmbean.getHeapMemoryUsage()));
sb.append(sm.getString("nonheap.mem.usage"));
sb.append(mu2String(mmbean.getNonHeapMemoryUsage()));
sb.append(sm.getString("obj.fin.pending", mmbean.getObjectPendingFinalizationCount()));
return ( sb.toString() );
}
}