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/**
* Copyright (C) 2006 Google Inc.
*
* Licensed 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 com.google.inject.tools.jmx;
import com.google.inject.Binding;
import com.google.inject.Guice;
import com.google.inject.Injector;
import com.google.inject.Key;
import com.google.inject.Module;
import java.lang.annotation.Annotation;
import java.lang.management.ManagementFactory;
import javax.management.MBeanServer;
import javax.management.MalformedObjectNameException;
import javax.management.ObjectName;
/**
* Provides a JMX interface to Guice.
*
* @author crazybob@google.com (Bob Lee)
*/
public class Manager {
/**
* Registers all the bindings of an Injector with the platform MBean server.
* Consider using the name of your root {@link Module} class as the domain.
*/
public static void manage(
String domain,
Injector injector) {
manage(ManagementFactory.getPlatformMBeanServer(), domain, injector);
}
/**
* Registers all the bindings of an Injector with the given MBean server.
* Consider using the name of your root {@link Module} class as the domain.
*/
public static void manage(MBeanServer server, String domain,
Injector injector) {
// Register each binding independently.
for (Binding<?> binding : injector.getBindings().values()) {
// Construct the name manually so we can ensure proper ordering of the
// key/value pairs.
StringBuilder name = new StringBuilder();
name.append(domain).append(":");
Key<?> key = binding.getKey();
name.append("type=").append(quote(key.getTypeLiteral().toString()));
Annotation annotation = key.getAnnotation();
if (annotation != null) {
name.append(",annotation=").append(quote(annotation.toString()));
}
else {
Class<? extends Annotation> annotationType = key.getAnnotationType();
if (annotationType != null) {
name.append(",annotation=")
.append(quote("@" + annotationType.getName()));
}
}
try {
server.registerMBean(new ManagedBinding(binding),
new ObjectName(name.toString()));
}
catch (MalformedObjectNameException e) {
throw new RuntimeException("Bad object name: "
+ name.toString(), e);
}
catch (Exception e) {
throw new RuntimeException(e);
}
}
}
static String quote(String value) {
// JMX seems to have a comma bug.
return ObjectName.quote(value).replace(',', ';');
}
/**
* Run with no arguments for usage instructions.
*/
public static void main(String[] args) throws Exception {
if (args.length != 1) {
System.err.println("Usage: java -Dcom.sun.management.jmxremote "
+ Manager.class.getName() + " [module class name]");
System.err.println("Then run 'jconsole' to connect.");
System.exit(1);
}
Module module = (Module) Class.forName(args[0]).newInstance();
Injector injector = Guice.createInjector(module);
manage(args[0], injector);
System.out.println("Press Ctrl+C to exit...");
// Sleep forever.
Thread.sleep(Long.MAX_VALUE);
}
}
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