| Clover coverage report - Ledge Components - SNAPSHOT |
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| Source file | Conditionals | Statements | Methods | TOTAL | |||||||||||||||
| Daemon.java | 75% | 86.7% | 75% | 83.3% |
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| 1 | // | |
| 2 | // Copyright (c) 2003, Caltha - Gajda, Krzewski, Mach, Potempski Sp.J. | |
| 3 | // All rights reserved. | |
| 4 | // | |
| 5 | // Redistribution and use in source and binary forms, with or without modification, | |
| 6 | // are permitted provided that the following conditions are met: | |
| 7 | // | |
| 8 | // * Redistributions of source code must retain the above copyright notice, | |
| 9 | // this list of conditions and the following disclaimer. | |
| 10 | // * Redistributions in binary form must reproduce the above copyright notice, | |
| 11 | // this list of conditions and the following disclaimer in the documentation | |
| 12 | // and/or other materials provided with the distribution. | |
| 13 | // * Neither the name of the Caltha - Gajda, Krzewski, Mach, Potempski Sp.J. | |
| 14 | // nor the names of its contributors may be used to endorse or promote products | |
| 15 | // derived from this software without specific prior written permission. | |
| 16 | // | |
| 17 | // THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" | |
| 18 | // AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED | |
| 19 | // WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. | |
| 20 | // IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, | |
| 21 | // INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, | |
| 22 | // BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, | |
| 23 | // OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, | |
| 24 | // WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) | |
| 25 | // ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE | |
| 26 | // POSSIBILITY OF SUCH DAMAGE. | |
| 27 | // | |
| 28 | package org.objectledge.threads.impl; | |
| 29 | ||
| 30 | import org.jcontainer.dna.Logger; | |
| 31 | import org.objectledge.context.Context; | |
| 32 | import org.objectledge.pipeline.Valve; | |
| 33 | import org.objectledge.threads.Task; | |
| 34 | import org.picocontainer.Startable; | |
| 35 | ||
| 36 | /** | |
| 37 | * A daemon thread helper object. | |
| 38 | * | |
| 39 | * @author <a href="mailto:rafal@caltha.pl">Rafal Krzewski</a> | |
| 40 | * @version $Id: Daemon.java,v 1.4 2005/02/10 17:46:53 rafal Exp $ | |
| 41 | */ | |
| 42 | public class Daemon | |
| 43 | implements Runnable, Startable | |
| 44 | { | |
| 45 | private Thread thread; | |
| 46 | ||
| 47 | private Logger log; | |
| 48 | ||
| 49 | private Task task; | |
| 50 | ||
| 51 | private Context context; | |
| 52 | ||
| 53 | private Valve cleanup; | |
| 54 | ||
| 55 | private boolean shutdown = false; | |
| 56 | ||
| 57 | private boolean running = false; | |
| 58 | ||
| 59 | /** | |
| 60 | * Creates a daemon thread. | |
| 61 | * | |
| 62 | * @param task the task to run. | |
| 63 | * @param priority the task's priority (see {@link java.lang.Thread} description) | |
| 64 | * @param threadGroup the thread group where the thread should belong. | |
| 65 | * @param log the logger to use. | |
| 66 | * @param context thread's processing context. | |
| 67 | * @param cleanup cleanup valve to invoke, should the task terminate. | |
| 68 | */ | |
| 69 | 5060 | public Daemon(Task task, int priority, |
| 70 | ThreadGroup threadGroup, Logger log, Context context, Valve cleanup) | |
| 71 | { | |
| 72 | 5060 | this.log = log; |
| 73 | 5060 | this.context = context; |
| 74 | 5060 | this.task = task; |
| 75 | 5060 | this.cleanup = cleanup; |
| 76 | 5060 | thread = new Thread(threadGroup, this, task.getName()); |
| 77 | 5060 | thread.setPriority(priority); |
| 78 | 5060 | thread.setDaemon(true); |
| 79 | 5060 | thread.start(); |
| 80 | } | |
| 81 | ||
| 82 | /** | |
| 83 | * {@inheritDoc} | |
| 84 | */ | |
| 85 | 5056 | public void run() |
| 86 | { | |
| 87 | 5056 | log.info("starting "+task.getName()); |
| 88 | 5054 | try |
| 89 | { | |
| 90 | 5054 | running = true; |
| 91 | 5054 | task.process(context); |
| 92 | } | |
| 93 | ///CLOVER:OFF | |
| 94 | catch(VirtualMachineError e) | |
| 95 | { | |
| 96 | throw e; | |
| 97 | } | |
| 98 | ///CLOVER:ON | |
| 99 | catch(ThreadDeath e) | |
| 100 | { | |
| 101 | 0 | if(!shutdown) |
| 102 | { | |
| 103 | 0 | log.warn(task.getName()+" was forcibly stopped", e); |
| 104 | } | |
| 105 | else | |
| 106 | { | |
| 107 | 0 | log.info("finished "+task.getName()); |
| 108 | } | |
| 109 | 0 | throw e; |
| 110 | } | |
| 111 | catch(Throwable e) | |
| 112 | { | |
| 113 | 46 | log.error("unhandled exception in "+task.getName(), e); |
| 114 | } | |
| 115 | finally | |
| 116 | { | |
| 117 | 323 | running = false; |
| 118 | } | |
| 119 | ||
| 120 | 323 | if(shutdown) |
| 121 | { | |
| 122 | 231 | log.info("finished "+task.getName()); |
| 123 | } | |
| 124 | else | |
| 125 | { | |
| 126 | 92 | log.error(task.getName()+" has quit"); |
| 127 | } | |
| 128 | ||
| 129 | // cleanup | |
| 130 | 323 | if(cleanup != null) |
| 131 | { | |
| 132 | 230 | try |
| 133 | { | |
| 134 | 230 | cleanup.process(context); |
| 135 | } | |
| 136 | ///CLOVER:OFF | |
| 137 | catch(VirtualMachineError e) | |
| 138 | { | |
| 139 | throw e; | |
| 140 | } | |
| 141 | catch(ThreadDeath e) | |
| 142 | { | |
| 143 | throw e; | |
| 144 | } | |
| 145 | ///CLOVER:ON | |
| 146 | catch(Throwable e) | |
| 147 | { | |
| 148 | 46 | log.error("error in cleanup after "+task.getName(), e); |
| 149 | } | |
| 150 | } | |
| 151 | } | |
| 152 | ||
| 153 | /** | |
| 154 | * {@inheritDoc} | |
| 155 | */ | |
| 156 | 0 | public void start() |
| 157 | { | |
| 158 | // Startable interface should really be split | |
| 159 | } | |
| 160 | ||
| 161 | /** | |
| 162 | * {@inheritDoc} | |
| 163 | */ | |
| 164 | 552 | public void stop() |
| 165 | { | |
| 166 | 552 | shutdown = true; |
| 167 | 552 | if(running) |
| 168 | { | |
| 169 | 414 | log.info("asking "+task.getName()+" to terminate"); |
| 170 | 414 | task.terminate(thread); |
| 171 | } | |
| 172 | else | |
| 173 | { | |
| 174 | 138 | log.warn(task.getName()+" is not running"); |
| 175 | } | |
| 176 | } | |
| 177 | } |
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