/*
* Licensed to the Apache Software Foundation (ASF) under one
* or more contributor license agreements. See the NOTICE file
* distributed with this work for additional information
* regarding copyright ownership. The ASF 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.apache.sling.commons.threads.impl;
import java.io.PrintWriter;
import java.util.Dictionary;
import java.util.Hashtable;
import java.util.concurrent.ThreadPoolExecutor;
import org.apache.sling.commons.threads.ThreadPoolConfig;
import org.osgi.framework.BundleContext;
import org.osgi.framework.Constants;
import org.osgi.framework.ServiceRegistration;
/**
* This is a configuration printer for the web console which
* prints out the thread pools.
*
*/
public class WebConsolePrinter {
private static ServiceRegistration plugin;
public static void initPlugin(final BundleContext bundleContext,
final DefaultThreadPoolManager dtpm) {
final WebConsolePrinter propertiesPrinter = new WebConsolePrinter(dtpm);
final Dictionary<String, String> props = new Hashtable<String, String>();
props.put(Constants.SERVICE_DESCRIPTION,
"Apache Sling Thread Pool Configuration Printer");
props.put(Constants.SERVICE_VENDOR, "The Apache Software Foundation");
props.put("felix.webconsole.label", "slingthreadpools");
props.put("felix.webconsole.title", "Sling Thread Pools");
props.put("felix.webconsole.configprinter.modes", "always");
plugin = bundleContext.registerService(WebConsolePrinter.class.getName(),
propertiesPrinter, props);
}
public static void destroyPlugin() {
if ( plugin != null) {
plugin.unregister();
plugin = null;
}
}
private static String HEADLINE = "Apache Sling Thread Pools";
private final DefaultThreadPoolManager mgr;
public WebConsolePrinter(final DefaultThreadPoolManager dtpm) {
this.mgr = dtpm;
}
/**
* Print out the servlet filter chains.
* @see org.apache.felix.webconsole.ConfigurationPrinter#printConfiguration(java.io.PrintWriter)
*/
public void printConfiguration(PrintWriter pw) {
pw.println(HEADLINE);
pw.println();
final DefaultThreadPoolManager.Entry[] configs = this.mgr.getConfigurations();
if ( configs.length > 0 ) {
for(final DefaultThreadPoolManager.Entry entry : configs ) {
final ThreadPoolConfig config = entry.getConfig();
pw.print("Pool ");
pw.println(entry.getName());
if ( entry.getPid() != null ) {
pw.print("- from configuration : ");
pw.println(entry.getPid());
}
pw.print("- used : ");
pw.println(entry.isUsed());
pw.print("- min pool size : ");
pw.println(config.getMinPoolSize());
pw.print("- max pool size : ");
pw.println(config.getMaxPoolSize());
pw.print("- queue size : ");
pw.println(config.getQueueSize());
pw.print("- keep alive time : ");
pw.println(config.getKeepAliveTime());
pw.print("- block policy : ");
pw.println(config.getBlockPolicy());
pw.print("- priority : ");
pw.println(config.getPriority());
pw.print("- shutdown graceful : ");
pw.println(config.isShutdownGraceful());
pw.print("- shutdown wait time : ");
pw.println(config.getShutdownWaitTimeMs());
pw.print("- daemon : ");
pw.println(config.isDaemon());
final ThreadPoolExecutor tpe = entry.getExecutor();
if ( tpe != null ) {
pw.print("- active count : ");
pw.println(tpe.getActiveCount());
pw.print("- completed task count : ");
pw.println(tpe.getCompletedTaskCount());
pw.print("- core pool size : ");
pw.println(tpe.getCorePoolSize());
pw.print("- largest pool size : ");
pw.println(tpe.getLargestPoolSize());
pw.print("- maximum pool size : ");
pw.println(tpe.getMaximumPoolSize());
pw.print("- pool size : ");
pw.println(tpe.getPoolSize());
pw.print("- task count : ");
pw.println(tpe.getTaskCount());
}
pw.println();
}
} else {
pw.println("No pools configured.");
}
}
}