public static void main(String[] args)
throws MalformedURLException, IOException, MalformedObjectNameException {
try {
// Get MbeanServerConnection
MBeanServerConnection mbc;
JMXServiceURL url = new JMXServiceURL(JMX_URI);
JMXConnector jmxcon = JMXConnectorFactory.connect(url, null);
mbc = jmxcon.getMBeanServerConnection();
// Get GC Collectors
Iterator<ObjectName> itr = mbc.queryNames(null, null).iterator();
ArrayList gcList = new ArrayList();
while (itr.hasNext()) {
String matchedName = itr.next().toString();
if (matchedName.indexOf("GarbageCollector") > 0) {
gcList.add(matchedName);
}
}
System.out.println(gcList);
// Fetch GC type collection time
for (int i = 0; i < gcList.size(); i++) {
ObjectName queryName = new ObjectName(gcList.get(i).toString());
System.out.print(queryName + ":");
System.out.println(mbc.getAttribute(queryName, "CollectionTime"));
}
ObjectName uptimeName = new ObjectName("java.lang:type=Runtime");
System.out.print("Server Uptime" + ":");
System.out.print(mbc.getAttribute(uptimeName, "Uptime"));
System.out.println(" Seconds");
// Fetch heap Memory usage stat
// committed=523501568, max=523501568, used=106156848
CompositeDataSupport cdsHeap;
ObjectName heapMemoryUsage = new ObjectName("java.lang:type=Memory");
System.out.println(
cdsHeap = (CompositeDataSupport) mbc.getAttribute(heapMemoryUsage, "HeapMemoryUsage"));
System.out.println(cdsHeap.get("used"));
// Fetch nonheap Memory usage stat
// committed=523501568, max=523501568, used=106156848
CompositeDataSupport cdsNonHeap;
ObjectName nonHeapMemoryUsage = new ObjectName("java.lang:type=Memory");
System.out.println(
cdsNonHeap =
(CompositeDataSupport) mbc.getAttribute(nonHeapMemoryUsage, "NonHeapMemoryUsage"));
System.out.println(cdsNonHeap.get("used"));
} catch (MBeanException ex) {
Logger.getLogger(Main.class.getName()).log(Level.SEVERE, null, ex);
} catch (AttributeNotFoundException ex) {
Logger.getLogger(Main.class.getName()).log(Level.SEVERE, null, ex);
} catch (InstanceNotFoundException ex) {
Logger.getLogger(Main.class.getName()).log(Level.SEVERE, null, ex);
} catch (ReflectionException ex) {
Logger.getLogger(Main.class.getName()).log(Level.SEVERE, null, ex);
}
}
public static TaskStatus getTaskStatus(CompositeDataSupport compositeData) {
TaskStatus status = new TaskStatus((Status) compositeData.get("status"));
status._reason = compositeData.get("reason");
status._statusChangeTime = (Date) compositeData.get("statusChangeTime");
status._percentageDone = ((Integer) compositeData.get("percentage")).intValue();
return status;
}
private void output(String name, Object attr, String key) {
if (attr instanceof CompositeDataSupport) {
CompositeDataSupport cds = (CompositeDataSupport) attr;
if (key == null) throw new IllegalArgumentException("Key is null for composed data " + name);
System.out.println(name + ".value " + format(cds.get(key)));
} else System.out.println(name + ".value " + format(attr));
}
private void output(String name, Object attr) {
if (attr instanceof CompositeDataSupport) {
CompositeDataSupport cds = (CompositeDataSupport) attr;
for (Iterator it = cds.getCompositeType().keySet().iterator(); it.hasNext(); ) {
String key = it.next().toString();
System.out.println(name + "." + key + ".value " + format(cds.get(key)));
}
} else System.out.println(name + ".value " + format(attr));
}
private final long getComposite(String name)
throws StatUnreachableException, AttributeNotFoundException, InstanceNotFoundException,
MBeanException, ReflectionException, MalformedObjectNameException,
NullPointerException {
final ObjectName objName = new ObjectName(_objectName + name);
final CompositeDataSupport cds =
(CompositeDataSupport) mBeanServer.getAttribute(objName, _attrName);
final long val = ((Number) cds.get(_valProp)).longValue();
failures = 0;
return val;
}
/**
* create result as property with name from property prefix When result is an array and
* isSeparateArrayResults is true, resultproperty used as prefix (<code>
* resultproperty.0-array.length</code> and store the result array length at <code>
* resultproperty.length</code>. Other option is that you delimit your result with a delimiter
* (java.util.StringTokenizer is used).
*
* @param propertyPrefix
* @param result
*/
protected void createProperty(String propertyPrefix, Object result) {
if (propertyPrefix == null) propertyPrefix = "";
if (result instanceof CompositeDataSupport) {
CompositeDataSupport data = (CompositeDataSupport) result;
CompositeType compositeType = data.getCompositeType();
Set<String> keys = compositeType.keySet();
for (Iterator<String> iter = keys.iterator(); iter.hasNext(); ) {
String key = iter.next();
Object value = data.get(key);
OpenType<?> type = compositeType.getType(key);
if (type instanceof SimpleType<?>) {
setProperty(propertyPrefix + "." + key, value);
} else {
createProperty(propertyPrefix + "." + key, value);
}
}
} else if (result instanceof TabularDataSupport) {
TabularDataSupport data = (TabularDataSupport) result;
for (Iterator<Object> iter = data.keySet().iterator(); iter.hasNext(); ) {
Object key = iter.next();
for (Iterator<?> iter1 = ((List<?>) key).iterator(); iter1.hasNext(); ) {
Object key1 = iter1.next();
CompositeData valuedata = data.get(new Object[] {key1});
Object value = valuedata.get("value");
OpenType<?> type = valuedata.getCompositeType().getType("value");
if (type instanceof SimpleType<?>) {
setProperty(propertyPrefix + "." + key1, value);
} else {
createProperty(propertyPrefix + "." + key1, value);
}
}
}
} else if (result.getClass().isArray()) {
if (isSeparatearrayresults()) {
int size = 0;
for (int i = 0; i < Array.getLength(result); i++) {
if (setProperty(propertyPrefix + "." + size, Array.get(result, i))) {
size++;
}
}
if (size > 0) {
setProperty(propertyPrefix + ".Length", Integer.toString(size));
}
}
} else {
String delim = getDelimiter();
if (delim != null) {
StringTokenizer tokenizer = new StringTokenizer(result.toString(), delim);
int size = 0;
for (; tokenizer.hasMoreTokens(); ) {
String token = tokenizer.nextToken();
if (setProperty(propertyPrefix + "." + size, token)) {
size++;
}
}
if (size > 0) setProperty(propertyPrefix + ".Length", Integer.toString(size));
} else {
setProperty(propertyPrefix, result.toString());
}
}
}