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/* * 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. */ /* @version $Id: ServiceDaemon.java 1024526 2010-10-20 05:21:16Z mturk $ */ import java.io.File; import java.io.FileInputStream; import java.io.FileOutputStream; import java.io.IOException; import java.io.PrintStream; import java.util.Enumeration; import java.util.Properties; import org.apache.commons.daemon.Daemon; import org.apache.commons.daemon.DaemonContext; public class ServiceDaemon implements Daemon { private Properties prop = null; private Process proc[] = null; private ServiceDaemonReadThread readout[] = null; private ServiceDaemonReadThread readerr[] = null; public ServiceDaemon() { super(); System.err.println("ServiceDaemon: instance "+this.hashCode()+ " created"); } protected void finalize() { System.err.println("ServiceDaemon: instance "+this.hashCode()+ " garbage collected"); } /** * init and destroy were added in jakarta-tomcat-daemon. */ public void init(DaemonContext context) throws Exception { /* Set the err */ System.setErr(new PrintStream(new FileOutputStream(new File("ServiceDaemon.err")),true)); System.err.println("ServiceDaemon: instance "+this.hashCode()+ " init"); /* read the properties file */ prop = new Properties(); try { prop.load(new FileInputStream("startfile")); } catch (Exception e) { // Cannot find startfile.properties. // XXX: Should we print something? } /* create an array to store the processes */ int i=0; for (Enumeration e = prop.keys(); e.hasMoreElements() ;) { e.nextElement(); i++; } System.err.println("ServiceDaemon: init for " + i + " processes"); proc = new Process[i]; readout = new ServiceDaemonReadThread[i]; readerr = new ServiceDaemonReadThread[i]; for (i=0;i<proc.length;i++) { proc[i] = null; readout[i] = null; readerr[i] = null; } System.err.println("ServiceDaemon: init done "); } public void start() { /* Dump a message */ System.err.println("ServiceDaemon: starting"); /* Start */ int i=0; for (Enumeration e = prop.keys(); e.hasMoreElements() ;) { String name = (String) e.nextElement(); System.err.println("ServiceDaemon: starting: " + name + " : " + prop.getProperty(name)); try { proc[i] = Runtime.getRuntime().exec(prop.getProperty(name)); } catch(Exception ex) { System.err.println("Exception: " + ex); } /* Start threads to read from Error and Out streams */ readerr[i] = new ServiceDaemonReadThread(proc[i].getErrorStream()); readout[i] = new ServiceDaemonReadThread(proc[i].getInputStream()); readerr[i].start(); readout[i].start(); i++; } } public void stop() throws IOException, InterruptedException { /* Dump a message */ System.err.println("ServiceDaemon: stopping"); for (int i=0;i<proc.length;i++) { if ( proc[i]==null) continue; proc[i].destroy(); try { proc[i].waitFor(); } catch(InterruptedException ex) { System.err.println("ServiceDaemon: exception while stopping:" + ex); } } System.err.println("ServiceDaemon: stopped"); } public void destroy() { System.err.println("ServiceDaemon: instance "+this.hashCode()+ " destroy"); } }