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.plugins.appointment.service;
35
36 import java.util.concurrent.ExecutorService;
37 import java.util.concurrent.Executors;
38 import java.util.concurrent.Future;
39 import java.util.concurrent.RejectedExecutionException;
40 import java.util.concurrent.TimeUnit;
41
42 import org.springframework.scheduling.concurrent.CustomizableThreadFactory;
43
44 import fr.paris.lutece.portal.service.util.AppLogService;
45 import fr.paris.lutece.portal.service.util.AppPropertiesService;
46
47 public enum AppointmentExecutorService
48 {
49 INSTANCE;
50 private static final String PROPERTY_THREAD_APPOINTMENT_POOL_MAX_SIZE = "appointment.executor.thread.pool.max.size";
51 private final ExecutorService _executorService = Executors.newFixedThreadPool(
52 AppPropertiesService.getPropertyInt( PROPERTY_THREAD_APPOINTMENT_POOL_MAX_SIZE, Runtime.getRuntime( ).availableProcessors( ) ),
53 new CustomizableThreadFactory( "Lutece-AppointmentExecutor-thread-" ) );
54
55 /**
56 * Executes the given command at some time in the future. The command may execute in a new thread, in a pooled thread, or in the calling thread, at the
57 * discretion of the {@code Executor} implementation.
58 *
59 * @param command
60 * the runnable task
61 * @throws RejectedExecutionException
62 * if this task cannot be accepted for execution
63 * @throws NullPointerException
64 * if command is null
65 */
66 public void execute( Runnable task )
67 {
68 _executorService.execute( task );
69 }
70
71 /**
72 * Submits a Runnable task for execution and returns a Future representing that task. The Future's ge} method will return null upon <em>successful</em>
73 * completion.
74 *
75 * @param task
76 * the task to submit
77 * @return a Future representing pending completion of the task
78 * @throws RejectedExecutionException
79 * if the task cannot be scheduled for execution
80 * @throws NullPointerException
81 * if the task is null
82 */
83 public Future<?> submit( Runnable task )
84 {
85
86 return _executorService.submit( task );
87 }
88
89 /**
90 * The following method shuts down the _executorService in two phases, first by calling shutdown to reject incoming tasks, and then calling shutdownNow, if
91 * necessary, to cancel any lingering tasks:
92 */
93 public void shutdown( )
94 {
95
96 _executorService.shutdown( );
97 try
98 {
99 if ( !_executorService.awaitTermination( 60, TimeUnit.SECONDS ) )
100 {
101 _executorService.shutdownNow( );
102 }
103 }
104 catch( InterruptedException e )
105 {
106 // (Re-)Cancel if current thread also interrupted
107 AppLogService.error( e.getMessage( ), e );
108 _executorService.shutdownNow( );
109 Thread.currentThread().interrupt();
110 }
111 }
112
113 }