1 /*
2 * Copyright (c) 2002-2022, City of Paris
3 * All rights reserved.
4 *
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions
7 * are met:
8 *
9 * 1. Redistributions of source code must retain the above copyright notice
10 * and the following disclaimer.
11 *
12 * 2. Redistributions in binary form must reproduce the above copyright notice
13 * and the following disclaimer in the documentation and/or other materials
14 * provided with the distribution.
15 *
16 * 3. Neither the name of 'Mairie de Paris' nor 'Lutece' nor the names of its
17 * contributors may be used to endorse or promote products derived from
18 * this software without specific prior written permission.
19 *
20 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
21 * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
22 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
23 * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDERS OR CONTRIBUTORS BE
24 * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
25 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
26 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
27 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
28 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
29 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
30 * POSSIBILITY OF SUCH DAMAGE.
31 *
32 * License 1.0
33 */
34 package fr.paris.lutece.portal.service.daemon;
35
36 import fr.paris.lutece.portal.service.util.AppLogService;
37 import fr.paris.lutece.portal.service.util.AppPropertiesService;
38
39 import java.util.concurrent.Executors;
40 import java.util.concurrent.ThreadFactory;
41
42 /**
43 * This class provides a method that creates new threads on demand to run daemon task
44 */
45 public final class DaemonThreadFactory implements ThreadFactory
46 {
47 private static final String PROPERTY_RUN_THREAD_AS_DAEMON = "daemon.runThreadAsDaemon";
48 private static final boolean RUN_THREAD_AS_DAEMON = Boolean.parseBoolean( AppPropertiesService.getProperty( PROPERTY_RUN_THREAD_AS_DAEMON, "0" ) );
49 private static final ThreadFactory _defaultThreadFactory = Executors.defaultThreadFactory( );
50 private static final String DAEMONS_NAME_PREFIX = "Lutece-DaemonsPool-Thread-";
51 private static int _nIndex = 1;
52
53 /**
54 * Constructs a new <tt>Thread</tt> with priority and daemon status
55 *
56 * @param runnable
57 * a runnable to be executed by new thread instance
58 * @return constructed thread
59 */
60 @Override
61 public Thread newThread( Runnable runnable )
62 {
63 Thread thread = _defaultThreadFactory.newThread( runnable );
64 thread.setDaemon( RUN_THREAD_AS_DAEMON );
65 thread.setPriority( Thread.MIN_PRIORITY );
66 thread.setName( DAEMONS_NAME_PREFIX + _nIndex );
67 AppLogService.info( "New Scheduled Thread added to the pool for daemons. Index:{}", _nIndex );
68 increaseIndex( );
69
70 return thread;
71 }
72
73 private static synchronized void increaseIndex( )
74 {
75 _nIndex++;
76 }
77 }