/**
* Returns a map of MBeans with ObjectName as the key and MBeanInfo value of a given domain. If
* domain is <tt>null</tt>, all MBeans are returned. If no MBean found, an empty map is returned.
*/
public Map<ObjectName, MBeanInfo> getMBeans(String domain) throws IOException {
ObjectName name = null;
if (domain != null) {
try {
name = new ObjectName(domain + ":*");
} catch (MalformedObjectNameException e) {
// should not reach here
assert (false);
}
}
Set<ObjectName> mbeans = server.queryNames(name, null);
Map<ObjectName, MBeanInfo> result = new HashMap<ObjectName, MBeanInfo>(mbeans.size());
Iterator<ObjectName> iterator = mbeans.iterator();
while (iterator.hasNext()) {
Object object = iterator.next();
if (object instanceof ObjectName) {
ObjectName o = (ObjectName) object;
try {
MBeanInfo info = server.getMBeanInfo(o);
result.put(o, info);
} catch (IntrospectionException e) {
// TODO: should log the error
} catch (InstanceNotFoundException e) {
// TODO: should log the error
} catch (ReflectionException e) {
// TODO: should log the error
}
}
}
return result;
}
/** Gets a proxy client for a given local virtual machine. */
public static ProxyClient getProxyClient(LocalVirtualMachine lvm) throws IOException {
final String key = getCacheKey(lvm);
ProxyClient proxyClient = cache.get(key);
if (proxyClient == null) {
proxyClient = new ProxyClient(lvm);
cache.put(key, proxyClient);
}
return proxyClient;
}
/** Gets a proxy client for a given "hostname:port". */
public static ProxyClient getProxyClient(
String hostName, int port, String userName, String password) throws IOException {
final String key = getCacheKey(hostName, port, userName, password);
ProxyClient proxyClient = cache.get(key);
if (proxyClient == null) {
proxyClient = new ProxyClient(hostName, port, userName, password);
cache.put(key, proxyClient);
}
return proxyClient;
}
private synchronized NameValueMap getCachedAttributes(ObjectName objName, Set<String> attrNames)
throws InstanceNotFoundException, ReflectionException, IOException {
NameValueMap values = cachedValues.get(objName);
if (values != null && values.keySet().containsAll(attrNames)) {
return values;
}
attrNames = new TreeSet<String>(attrNames);
Set<String> oldNames = cachedNames.get(objName);
if (oldNames != null) {
attrNames.addAll(oldNames);
}
values = new NameValueMap();
final AttributeList attrs =
conn.getAttributes(objName, attrNames.toArray(new String[attrNames.size()]));
for (Attribute attr : attrs.asList()) {
values.put(attr.getName(), attr.getValue());
}
cachedValues.put(objName, values);
cachedNames.put(objName, attrNames);
return values;
}
private void tryConnect(boolean requireRemoteSSL) throws IOException {
if (jmxUrl == null && "localhost".equals(hostName) && port == 0) {
// Monitor self
this.jmxc = null;
this.mbsc = ManagementFactory.getPlatformMBeanServer();
this.server = Snapshot.newSnapshot(mbsc);
} else {
// Monitor another process
if (lvm != null) {
if (!lvm.isManageable()) {
lvm.startManagementAgent();
if (!lvm.isManageable()) {
// FIXME: what to throw
throw new IOException(lvm + "not manageable");
}
}
if (this.jmxUrl == null) {
this.jmxUrl = new JMXServiceURL(lvm.connectorAddress());
}
}
Map<String, Object> env = new HashMap<String, Object>();
if (requireRemoteSSL) {
env.put("jmx.remote.x.check.stub", "true");
}
// Need to pass in credentials ?
if (userName == null && password == null) {
if (isVmConnector()) {
// Check for SSL config on reconnection only
if (stub == null) {
checkSslConfig();
}
this.jmxc = new RMIConnector(stub, null);
jmxc.connect(env);
} else {
this.jmxc = JMXConnectorFactory.connect(jmxUrl, env);
}
} else {
env.put(JMXConnector.CREDENTIALS, new String[] {userName, password});
if (isVmConnector()) {
// Check for SSL config on reconnection only
if (stub == null) {
checkSslConfig();
}
this.jmxc = new RMIConnector(stub, null);
jmxc.connect(env);
} else {
this.jmxc = JMXConnectorFactory.connect(jmxUrl, env);
}
}
this.mbsc = jmxc.getMBeanServerConnection();
this.server = Snapshot.newSnapshot(mbsc);
}
this.isDead = false;
try {
ObjectName on = new ObjectName(THREAD_MXBEAN_NAME);
this.hasPlatformMXBeans = server.isRegistered(on);
this.hasHotSpotDiagnosticMXBean =
server.isRegistered(new ObjectName(HOTSPOT_DIAGNOSTIC_MXBEAN_NAME));
// check if it has 6.0 new APIs
if (this.hasPlatformMXBeans) {
MBeanOperationInfo[] mopis = server.getMBeanInfo(on).getOperations();
// look for findDeadlockedThreads operations;
for (MBeanOperationInfo op : mopis) {
if (op.getName().equals("findDeadlockedThreads")) {
this.supportsLockUsage = true;
break;
}
}
on = new ObjectName(COMPILATION_MXBEAN_NAME);
this.hasCompilationMXBean = server.isRegistered(on);
}
} catch (MalformedObjectNameException e) {
// should not reach here
throw new InternalError(e.getMessage());
} catch (IntrospectionException e) {
InternalError ie = new InternalError(e.getMessage());
ie.initCause(e);
throw ie;
} catch (InstanceNotFoundException e) {
InternalError ie = new InternalError(e.getMessage());
ie.initCause(e);
throw ie;
} catch (ReflectionException e) {
InternalError ie = new InternalError(e.getMessage());
ie.initCause(e);
throw ie;
}
if (hasPlatformMXBeans) {
// WORKAROUND for bug 5056632
// Check if the access role is correct by getting a RuntimeMXBean
getRuntimeMXBean();
}
}
