1 /*
2 * Copyright (c) 2002-2020, 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.lutecetools.service;
35
36 import com.fasterxml.jackson.databind.ObjectMapper;
37 import com.fasterxml.jackson.databind.SerializationFeature;
38
39 import fr.paris.lutece.plugins.lutecetools.business.Component;
40 import fr.paris.lutece.portal.service.daemon.AppDaemonService;
41 import fr.paris.lutece.portal.service.datastore.DatastoreService;
42 import fr.paris.lutece.portal.service.util.AppLogService;
43
44 import java.io.IOException;
45
46 import java.util.Date;
47
48 /**
49 * ComponentService
50 */
51 public class ComponentService
52 {
53 private static final String DSKEY_PREFIX = "lutecetools.database.";
54 private static final String DAEMON_KEY = "lutecetoolsCacheUpdater";
55 private static final ObjectMapper _mapper = new ObjectMapper( );
56
57 private ComponentService( )
58 {
59 }
60
61 /**
62 * Save a component into the Datastore as JSON format
63 *
64 * @param component
65 * The component
66 */
67 public static void save( Component component )
68 {
69 try
70 {
71 component.setLastUpdate( new Date( ).getTime( ) );
72
73 String strJSON = getAsJSON( component );
74 DatastoreService.setDataValue( DSKEY_PREFIX + component.getArtifactId( ), strJSON );
75 }
76 catch( IOException ex )
77 {
78 AppLogService.error( "LuteceTools : Error saving component : " + ex.getMessage( ), ex );
79 }
80 }
81
82 /**
83 * Load a component from the Datastore
84 *
85 * @param strArtifactId
86 * The Artifact ID
87 * @return The component
88 */
89 public static Component load( String strArtifactId )
90 {
91 Component component = null;
92 String strJSON = DatastoreService.getDataValue( DSKEY_PREFIX + strArtifactId, null );
93
94 if ( strJSON != null )
95 {
96 try
97 {
98 component = loadFromJSON( strJSON );
99 }
100 catch( IOException ex )
101 {
102 AppLogService.error( "LuteceTools : Error loading component : " + ex.getMessage( ), ex );
103 }
104 }
105
106 return component;
107 }
108
109 /**
110 * Clear cache by removing datastore data
111 */
112 public static void clearCache( )
113 {
114 AppLogService.info( "LuteceTools : clear the cache of the component list ..." );
115 AppDaemonService.stopDaemon( DAEMON_KEY );
116 DatastoreService.removeInstanceDataByPrefix( DSKEY_PREFIX );
117 AppDaemonService.startDaemon( DAEMON_KEY );
118 AppLogService.info( "LuteceTools : cache cleared." );
119 }
120
121 /**
122 * Convert a component into JSON
123 *
124 * @param component
125 * The component
126 * @return JSON
127 * @throws IOException
128 * if an error occurs
129 */
130 private static String getAsJSON( Component component ) throws IOException
131 {
132 _mapper.enable( SerializationFeature.INDENT_OUTPUT );
133 return _mapper.writeValueAsString( component );
134 }
135
136 /**
137 * Convert JSON into Component
138 *
139 * @param strJson
140 * The JSON
141 * @return The component
142 * @throws IOException
143 * if an error occurs
144 */
145 private static Component loadFromJSON( String strJson ) throws IOException
146 {
147 return _mapper.readValue( strJson, Component.class );
148 }
149 }