1
|
// $Id$
|
2
|
/**
|
3
|
* Copyright (C) 2015 EDIT
|
4
|
* European Distributed Institute of Taxonomy
|
5
|
* http://www.e-taxonomy.eu
|
6
|
*
|
7
|
* The contents of this file are subject to the Mozilla Public License Version 1.1
|
8
|
* See LICENSE.TXT at the top of this package for the full license terms.
|
9
|
*/
|
10
|
package org.cybertaxonomy.utis.store;
|
11
|
|
12
|
import java.io.IOException;
|
13
|
import java.net.URI;
|
14
|
import java.net.URISyntaxException;
|
15
|
import java.util.Date;
|
16
|
import java.util.List;
|
17
|
|
18
|
import org.apache.commons.httpclient.util.DateParseException;
|
19
|
import org.apache.commons.httpclient.util.DateUtil;
|
20
|
import org.apache.http.Header;
|
21
|
import org.apache.http.HttpResponse;
|
22
|
import org.apache.http.client.ClientProtocolException;
|
23
|
import org.apache.http.client.methods.HttpHead;
|
24
|
import org.apache.http.impl.client.CloseableHttpClient;
|
25
|
import org.apache.http.impl.client.HttpClientBuilder;
|
26
|
import org.cybertaxonomy.utis.checklist.DRFChecklistException;
|
27
|
import org.slf4j.Logger;
|
28
|
import org.slf4j.LoggerFactory;
|
29
|
|
30
|
/**
|
31
|
* @author a.kohlbecker
|
32
|
* @date Oct 28, 2015
|
33
|
*
|
34
|
*/
|
35
|
public class Neo4jStoreUpdater {
|
36
|
|
37
|
private static final String SKIP_STORE_UPDATING = "skipStoreUpdating";
|
38
|
|
39
|
protected Logger logger = LoggerFactory.getLogger(Neo4jStoreUpdater.class);
|
40
|
|
41
|
private final URI testUrl;
|
42
|
private final Neo4jStore store;
|
43
|
private long interval_ms;
|
44
|
private boolean incrementalUpdate = false;
|
45
|
|
46
|
|
47
|
private LastModifiedProvider lastModifiedProvider;
|
48
|
|
49
|
private ResourceProvider resourceProvider;
|
50
|
|
51
|
/**
|
52
|
* @return the lastModifiedProvider
|
53
|
*/
|
54
|
public LastModifiedProvider getLastModifiedProvider() {
|
55
|
return lastModifiedProvider;
|
56
|
}
|
57
|
|
58
|
/**
|
59
|
* @param lastModifiedProvider the lastModifiedProvider to set
|
60
|
*/
|
61
|
public void setLastModifiedProvider(LastModifiedProvider lastModifiedProvider) {
|
62
|
this.lastModifiedProvider = lastModifiedProvider;
|
63
|
}
|
64
|
|
65
|
/**
|
66
|
* @param resourceProvider
|
67
|
*/
|
68
|
public void setResourceProvider(ResourceProvider resourceProvider) {
|
69
|
this.resourceProvider = resourceProvider;
|
70
|
|
71
|
}
|
72
|
|
73
|
public Neo4jStoreUpdater(Neo4jStore store, String testUrl) throws URISyntaxException {
|
74
|
this.testUrl = new URI(testUrl);
|
75
|
this.store = store;
|
76
|
}
|
77
|
|
78
|
/**
|
79
|
* @param lastModified
|
80
|
* @return
|
81
|
*/
|
82
|
private Date getRemoteLastModified() {
|
83
|
|
84
|
Date lastModified = null;
|
85
|
if(lastModifiedProvider != null){
|
86
|
try {
|
87
|
return lastModifiedProvider.getLastModified();
|
88
|
} catch (DRFChecklistException e) {
|
89
|
logger.error("Error in LastModifiedProvider, if this problem persists it will block from updating neo4jStore", e);
|
90
|
}
|
91
|
} else {
|
92
|
|
93
|
CloseableHttpClient client = HttpClientBuilder.create().build();
|
94
|
HttpHead request = new HttpHead(testUrl);
|
95
|
try {
|
96
|
HttpResponse response = client.execute(request);
|
97
|
Header lastModifiedH = response.getFirstHeader("Last-Modified");
|
98
|
lastModified = DateUtil.parseDate(lastModifiedH.getValue());
|
99
|
logger.debug("Last-Modified: " + lastModifiedH.getValue());
|
100
|
|
101
|
} catch (ClientProtocolException e) {
|
102
|
logger.error("ClientProtocolException, if this problem persists it will block from updating neo4jStore", e);
|
103
|
} catch (DateParseException e) {
|
104
|
logger.error("Could not parse Last-Modified value from HTTP response, if this problem persists it will block from updating neo4jStore");
|
105
|
} catch (IOException e) {
|
106
|
logger.error("IOException, if this problem persists it will block from updating the neo4jStore", e);
|
107
|
} finally {
|
108
|
try {
|
109
|
client.close();
|
110
|
} catch (IOException e) {
|
111
|
// IGNORE //
|
112
|
}
|
113
|
}
|
114
|
}
|
115
|
return lastModified;
|
116
|
}
|
117
|
|
118
|
private Date checkNewerVersion() {
|
119
|
|
120
|
logger.info("polling for updates at " + testUrl.toString());
|
121
|
Date lastModified = getRemoteLastModified();
|
122
|
if(store.getLastModified() == null || lastModified != null && lastModified.after(store.getLastModified())) {
|
123
|
logger.info("remote resource is more recent: " + DateUtil.formatDate(lastModified));
|
124
|
return lastModified;
|
125
|
}
|
126
|
return null;
|
127
|
}
|
128
|
|
129
|
public void watch(int intervalMinutes) {
|
130
|
|
131
|
if (isRunningAsTest()) {
|
132
|
logger.warn("triggering update in test mode");
|
133
|
updateIfNeeded();
|
134
|
} else {
|
135
|
|
136
|
if(System.getProperty(SKIP_STORE_UPDATING) == null){
|
137
|
|
138
|
this.interval_ms = 1000 * 60 * intervalMinutes;
|
139
|
Thread updateThread = new Thread() {
|
140
|
|
141
|
@Override
|
142
|
public void run() {
|
143
|
boolean interrupted = false;
|
144
|
while (!interrupted) {
|
145
|
logger.warn("triggering update in update thread in 100ms");
|
146
|
try {
|
147
|
sleep(100);
|
148
|
} catch (InterruptedException e) {
|
149
|
logger.info("Neo4jStoreUpdater has been interrupted");
|
150
|
interrupted = true;
|
151
|
}
|
152
|
updateIfNeeded();
|
153
|
try {
|
154
|
sleep(interval_ms);
|
155
|
} catch (InterruptedException e) {
|
156
|
logger.info("Neo4jStoreUpdater has been interrupted");
|
157
|
interrupted = true;
|
158
|
}
|
159
|
}
|
160
|
}
|
161
|
};
|
162
|
updateThread.setName(Neo4jStoreUpdater.class.getSimpleName());
|
163
|
updateThread.setPriority(Thread.MIN_PRIORITY);
|
164
|
updateThread.start();
|
165
|
} else {
|
166
|
logger.info("**********************************************");
|
167
|
logger.info(" store updating disabled by system sproperty");
|
168
|
logger.info("**********************************************");
|
169
|
}
|
170
|
}
|
171
|
}
|
172
|
|
173
|
|
174
|
|
175
|
/**
|
176
|
* @return
|
177
|
*/
|
178
|
private boolean isRunningAsTest() {
|
179
|
StackTraceElement[] stackTrace = Thread.currentThread().getStackTrace();
|
180
|
for (StackTraceElement stackTraceElement : stackTrace) {
|
181
|
if(stackTraceElement.getClassName().startsWith("org.junit.runners")) {
|
182
|
return true;
|
183
|
}
|
184
|
}
|
185
|
return false;
|
186
|
}
|
187
|
|
188
|
/**
|
189
|
*
|
190
|
* @param newLastModified The new last modified time stamp to set for the store
|
191
|
*/
|
192
|
public void updateStore(Date newLastModified) {
|
193
|
|
194
|
if(store.hasActiveImport()){
|
195
|
logger.warn("The store (" + store.storeLocation.getPath() + ") has an active import, skipping this update");
|
196
|
}
|
197
|
|
198
|
logger.info("Starting store update");
|
199
|
try {
|
200
|
List<URI> resources = resourceProvider.getResources(store.getLastModified());
|
201
|
store.loadIntoStore(resources, !isIncrementalUpdate());
|
202
|
store.setLastModified(newLastModified);
|
203
|
} catch (Exception e) {
|
204
|
throw new RuntimeException("Loading resources into Neo4jStore failed", e);
|
205
|
}
|
206
|
|
207
|
|
208
|
logger.info("Store update done.");
|
209
|
}
|
210
|
|
211
|
/**
|
212
|
*
|
213
|
*/
|
214
|
public void updateIfNeeded() {
|
215
|
Date lastModified = checkNewerVersion();
|
216
|
if(lastModified != null) {
|
217
|
updateStore(lastModified);
|
218
|
}
|
219
|
}
|
220
|
|
221
|
/**
|
222
|
* @return the incrementalUpdate
|
223
|
*/
|
224
|
public boolean isIncrementalUpdate() {
|
225
|
return incrementalUpdate;
|
226
|
}
|
227
|
|
228
|
/**
|
229
|
* @param incrementalUpdate the incrementalUpdate to set
|
230
|
*/
|
231
|
public void setIncrementalUpdate(boolean incrementalUpdate) {
|
232
|
this.incrementalUpdate = incrementalUpdate;
|
233
|
}
|
234
|
|
235
|
}
|