1 |
7542
|
tao
|
/**
|
2 |
8138
|
tao
|
* Copyright: 2013 Regents of the University of California and the
|
3 |
7542
|
tao
|
* National Center for Ecological Analysis and Synthesis
|
4 |
|
|
*
|
5 |
|
|
* This program is free software; you can redistribute it and/or modify
|
6 |
|
|
* it under the terms of the GNU General Public License as published by
|
7 |
|
|
* the Free Software Foundation; either version 2 of the License, or
|
8 |
|
|
* (at your option) any later version.
|
9 |
|
|
*
|
10 |
|
|
* This program is distributed in the hope that it will be useful,
|
11 |
|
|
* but WITHOUT ANY WARRANTY; without even the implied warranty of
|
12 |
|
|
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
13 |
|
|
* GNU General Public License for more details.
|
14 |
|
|
*
|
15 |
|
|
* You should have received a copy of the GNU General Public License
|
16 |
|
|
* along with this program; if not, write to the Free Software
|
17 |
|
|
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
|
18 |
|
|
*/
|
19 |
|
|
package edu.ucsb.nceas.metacat.index;
|
20 |
|
|
|
21 |
7562
|
leinfelder
|
import java.io.FileNotFoundException;
|
22 |
7602
|
tao
|
import java.util.List;
|
23 |
8464
|
leinfelder
|
import java.util.Map;
|
24 |
7550
|
leinfelder
|
|
25 |
|
|
import org.apache.commons.logging.Log;
|
26 |
|
|
import org.apache.commons.logging.LogFactory;
|
27 |
7811
|
leinfelder
|
import org.dataone.service.exceptions.ServiceFailure;
|
28 |
7550
|
leinfelder
|
import org.dataone.service.types.v1.Identifier;
|
29 |
8826
|
leinfelder
|
import org.dataone.service.types.v2.SystemMetadata;
|
30 |
7550
|
leinfelder
|
|
31 |
8464
|
leinfelder
|
import com.hazelcast.core.EntryEvent;
|
32 |
|
|
import com.hazelcast.core.EntryListener;
|
33 |
7550
|
leinfelder
|
import com.hazelcast.core.IMap;
|
34 |
|
|
|
35 |
8464
|
leinfelder
|
import edu.ucsb.nceas.metacat.common.index.IndexTask;
|
36 |
7854
|
tao
|
|
37 |
8464
|
leinfelder
|
public class SystemMetadataEventListener implements EntryListener<Identifier, IndexTask>, Runnable {
|
38 |
7550
|
leinfelder
|
|
39 |
|
|
private static Log log = LogFactory.getLog(SystemMetadataEventListener.class);
|
40 |
|
|
|
41 |
|
|
private SolrIndex solrIndex = null;
|
42 |
8283
|
leinfelder
|
|
43 |
8464
|
leinfelder
|
private IMap<Identifier, IndexTask> source = null;
|
44 |
7811
|
leinfelder
|
|
45 |
7550
|
leinfelder
|
/**
|
46 |
7557
|
leinfelder
|
* Default constructor - caller needs to initialize manually
|
47 |
|
|
* @see setSolrIndex()
|
48 |
|
|
* @see start()
|
49 |
7550
|
leinfelder
|
*/
|
50 |
7557
|
leinfelder
|
public SystemMetadataEventListener() {
|
51 |
|
|
}
|
52 |
|
|
|
53 |
|
|
/**
|
54 |
|
|
* Sets the SolrIndex instance and initializes the listener
|
55 |
|
|
* @param solrIndex
|
56 |
|
|
*/
|
57 |
|
|
public SystemMetadataEventListener(SolrIndex solrIndex) {
|
58 |
|
|
this.solrIndex = solrIndex;
|
59 |
7811
|
leinfelder
|
try {
|
60 |
8464
|
leinfelder
|
run();
|
61 |
7811
|
leinfelder
|
} catch (Exception e) {
|
62 |
|
|
log.error(e.getMessage(), e);
|
63 |
|
|
}
|
64 |
7557
|
leinfelder
|
}
|
65 |
|
|
|
66 |
|
|
/**
|
67 |
|
|
* Get the SolrIndex that this listener communicates with
|
68 |
|
|
* @return a SolrIndex instance that indexes the content being listened to
|
69 |
|
|
*/
|
70 |
|
|
public SolrIndex getSolrIndex() {
|
71 |
|
|
return solrIndex;
|
72 |
|
|
}
|
73 |
|
|
|
74 |
|
|
/**
|
75 |
|
|
* Set the SolrIndex instance that the listener modifies
|
76 |
|
|
* @param solrIndex
|
77 |
|
|
*/
|
78 |
|
|
public void setSolrIndex(SolrIndex solrIndex) {
|
79 |
|
|
this.solrIndex = solrIndex;
|
80 |
|
|
}
|
81 |
|
|
|
82 |
|
|
/**
|
83 |
|
|
* Registers this instance as a system metadata map event listener
|
84 |
7811
|
leinfelder
|
* @throws ServiceFailure
|
85 |
|
|
* @throws FileNotFoundException
|
86 |
7557
|
leinfelder
|
*/
|
87 |
8464
|
leinfelder
|
public void run() {
|
88 |
7550
|
leinfelder
|
|
89 |
7811
|
leinfelder
|
// get shared structures and add listener
|
90 |
8464
|
leinfelder
|
try {
|
91 |
|
|
IMap<Identifier, String> objectPathMap = DistributedMapsFactory.getObjectPathMap();
|
92 |
|
|
IMap<Identifier, IndexTask> indexQueue = DistributedMapsFactory.getIndexQueue();
|
93 |
|
|
indexQueue.addEntryListener(this, true);
|
94 |
|
|
this.source = indexQueue;
|
95 |
|
|
log.info("System Metadata size: " + indexQueue.size());
|
96 |
|
|
log.info("Object path size:" + objectPathMap.size());
|
97 |
|
|
} catch (Exception e) {
|
98 |
|
|
log.error("Cannot start SystemMetadata listener" , e);
|
99 |
|
|
}
|
100 |
7550
|
leinfelder
|
}
|
101 |
|
|
|
102 |
|
|
/**
|
103 |
7557
|
leinfelder
|
* Removes this instance as a system metadata map event listener
|
104 |
7811
|
leinfelder
|
* @throws ServiceFailure
|
105 |
|
|
* @throws FileNotFoundException
|
106 |
7550
|
leinfelder
|
*/
|
107 |
7811
|
leinfelder
|
public void stop() throws FileNotFoundException, ServiceFailure {
|
108 |
7550
|
leinfelder
|
log.info("stopping index entry listener...");
|
109 |
8464
|
leinfelder
|
DistributedMapsFactory.getIndexQueue().removeEntryListener(this);
|
110 |
7550
|
leinfelder
|
}
|
111 |
8464
|
leinfelder
|
|
112 |
|
|
public void entryRemoved(EntryEvent<Identifier, IndexTask> entryEvent) {
|
113 |
8893
|
tao
|
// do nothing
|
114 |
7602
|
tao
|
}
|
115 |
8464
|
leinfelder
|
public void entryEvicted(EntryEvent<Identifier, IndexTask> entryEvent) {
|
116 |
|
|
// do nothing
|
117 |
|
|
}
|
118 |
|
|
public void entryAdded(EntryEvent<Identifier, IndexTask> entryEvent) {
|
119 |
|
|
entryUpdated(entryEvent);
|
120 |
|
|
}
|
121 |
7604
|
tao
|
|
122 |
8464
|
leinfelder
|
public void entryUpdated(EntryEvent<Identifier, IndexTask> entryEvent) {
|
123 |
7684
|
tao
|
//System.out.println("===================================calling entryUpdated method ");
|
124 |
7854
|
tao
|
log.info("===================================calling SystemMetadataEventListener.itemAdded method ");
|
125 |
7556
|
leinfelder
|
// add to the index
|
126 |
8464
|
leinfelder
|
Identifier pid = entryEvent.getKey();
|
127 |
7684
|
tao
|
//System.out.println("===================================update the document "+pid.getValue());
|
128 |
8464
|
leinfelder
|
log.info("===================================adding the document " + pid.getValue());
|
129 |
8343
|
tao
|
|
130 |
8464
|
leinfelder
|
// what do we have to index?
|
131 |
|
|
IndexTask task = entryEvent.getValue();
|
132 |
|
|
SystemMetadata systemMetadata = task.getSystemMetadata();
|
133 |
|
|
Map<String, List<Object>> fields = task.getFields();
|
134 |
|
|
|
135 |
8343
|
tao
|
/*if(systemMetadata == null) {
|
136 |
7854
|
tao
|
writeEventLog(systemMetadata, pid, "SystemMetadataEventListener.itemAdded -could not get the SystemMetadata");
|
137 |
|
|
return;
|
138 |
8343
|
tao
|
}*/
|
139 |
8283
|
leinfelder
|
|
140 |
8464
|
leinfelder
|
// make sure we remove this task so that it can be re-added in the future
|
141 |
|
|
if (source != null && pid != null) {
|
142 |
|
|
source.remove(pid);
|
143 |
8283
|
leinfelder
|
}
|
144 |
8343
|
tao
|
|
145 |
8464
|
leinfelder
|
if (systemMetadata != null) {
|
146 |
8893
|
tao
|
solrIndex.update(pid, systemMetadata);
|
147 |
8862
|
tao
|
|
148 |
8464
|
leinfelder
|
}
|
149 |
|
|
if (fields != null) {
|
150 |
|
|
solrIndex.insertFields(pid, fields);
|
151 |
|
|
}
|
152 |
7691
|
tao
|
|
153 |
7550
|
leinfelder
|
}
|
154 |
7854
|
tao
|
|
155 |
8343
|
tao
|
|
156 |
7550
|
leinfelder
|
|
157 |
7542
|
tao
|
}
|