Mercurial > hg > AnnotationManagerN4J
annotate src/main/java/de/mpiwg/itgroup/annotations/restlet/BaseRestlet.java @ 72:4c2cea836bc0
restlet 2.1 works now. (it's the start() method, stupid!)
| author | casties |
|---|---|
| date | Tue, 11 Mar 2014 17:43:00 +0100 |
| parents | 326369d4bc4d |
| children | 4b8c909cabf3 |
| rev | line source |
|---|---|
| 18 | 1 package de.mpiwg.itgroup.annotations.restlet; |
| 2 | |
| 70 | 3 /* |
| 4 * #%L | |
| 5 * AnnotationManager | |
| 6 * %% | |
| 7 * Copyright (C) 2012 - 2014 MPIWG Berlin | |
| 8 * %% | |
| 9 * This program is free software: you can redistribute it and/or modify | |
| 10 * it under the terms of the GNU Lesser General Public License as | |
| 11 * published by the Free Software Foundation, either version 3 of the | |
| 12 * License, or (at your option) any later version. | |
| 13 * | |
| 14 * This program is distributed in the hope that it will be useful, | |
| 15 * but WITHOUT ANY WARRANTY; without even the implied warranty of | |
| 16 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
| 17 * GNU General Lesser Public License for more details. | |
| 18 * | |
| 19 * You should have received a copy of the GNU General Lesser Public | |
| 20 * License along with this program. If not, see | |
| 21 * <http://www.gnu.org/licenses/lgpl-3.0.html>. | |
| 22 * #L% | |
| 23 * Author: Robert Casties (casties@mpiwg-berlin.mpg.de) | |
| 24 */ | |
| 25 | |
| 18 | 26 import java.io.File; |
| 27 import java.io.FileInputStream; | |
| 28 import java.io.FileNotFoundException; | |
| 29 import java.io.IOException; | |
| 30 import java.io.InputStream; | |
| 31 import java.util.Hashtable; | |
| 32 import java.util.Properties; | |
| 71 | 33 import java.util.concurrent.ConcurrentMap; |
| 18 | 34 |
| 35 import javax.naming.NamingEnumeration; | |
| 36 import javax.naming.NamingException; | |
| 37 import javax.naming.directory.Attribute; | |
| 38 import javax.naming.directory.DirContext; | |
| 39 import javax.naming.directory.InitialDirContext; | |
| 40 import javax.naming.directory.SearchControls; | |
| 41 import javax.naming.directory.SearchResult; | |
| 42 import javax.servlet.ServletContext; | |
| 43 | |
| 44 import org.apache.log4j.BasicConfigurator; | |
| 45 import org.apache.log4j.Logger; | |
| 46 import org.neo4j.graphdb.GraphDatabaseService; | |
|
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47 import org.neo4j.graphdb.factory.GraphDatabaseBuilder; |
| 18 | 48 import org.neo4j.graphdb.factory.GraphDatabaseFactory; |
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49 import org.neo4j.graphdb.factory.GraphDatabaseSettings; |
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50 import org.neo4j.kernel.GraphDatabaseAPI; |
| 18 | 51 import org.neo4j.server.WrappingNeoServerBootstrapper; |
| 52 import org.restlet.Application; | |
| 53 import org.restlet.Context; | |
| 71 | 54 import org.restlet.Restlet; |
| 55 import org.restlet.data.LocalReference; | |
| 18 | 56 |
| 57 import de.mpiwg.itgroup.annotations.neo4j.AnnotationStore; | |
| 58 | |
| 59 public abstract class BaseRestlet extends Application { | |
| 60 | |
| 61 public static Logger logger = Logger.getLogger(BaseRestlet.class); | |
| 62 | |
| 63 /** | |
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64 * Properties holding consumer keys and secrets. |
| 18 | 65 */ |
| 66 protected Properties consumerKeys; | |
| 71 | 67 public String CONSUMER_KEYS_PATH = "consumerkeys.property"; |
| 18 | 68 public static final String CONSUMERKEYS_KEY = "annotationmanager.consumerkeys"; |
| 69 | |
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70 /** |
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71 * Properties holding server config. |
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72 */ |
| 18 | 73 protected Properties serverConfig; |
| 71 | 74 public String CONFIG_PROPS_PATH = "serverconfig.property"; |
| 18 | 75 public static final String SERVERCONFIG_KEY = "annotationmanager.serverconfig"; |
| 76 | |
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77 /** |
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78 * database instance; |
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79 */ |
| 18 | 80 protected GraphDatabaseService graphDb; |
| 81 public static final String GRAPHDB_KEY = "annotationmanager.graphdb"; | |
| 82 public static final String GRAPHDB_PATH_KEY = "annotationmanager.graphdb.path"; | |
| 71 | 83 public String graphdbPath = "neo4j-annotation-db"; |
| 18 | 84 |
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85 /** |
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86 * database interface server instance. |
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87 */ |
| 18 | 88 protected WrappingNeoServerBootstrapper srv; |
| 89 public static final String GRAPHDBSRV_KEY = "annotationmanager.graphdb.srv"; | |
| 90 | |
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91 /** |
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92 * annotation store instance. |
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93 */ |
| 18 | 94 protected AnnotationStore store; |
| 95 public static final String ANNSTORE_KEY = "annotationmanager.store"; | |
| 96 | |
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97 /** |
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98 * LDAP server URI (for looking up full user names). |
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99 */ |
| 18 | 100 protected String ldapServerUrl; |
| 101 public static final String LDAP_SERVER_KEY = "annotationmanager.ldapserver.url"; | |
| 102 | |
| 50 | 103 public static final String ADMIN_USER_KEY = "annotationmanager.admin.user"; |
| 104 public static final String ADMIN_PASSWORD_KEY = "annotationmanager.admin.password"; | |
| 105 | |
| 18 | 106 /** |
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107 * run in authorization mode i.e. with tokens. |
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108 */ |
| 58 | 109 protected boolean authorizationMode = false; |
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110 public static final String AUTHORIZATION_MODE_KEY = "annotationmanager.authorization"; |
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111 |
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112 /** |
| 58 | 113 * prefix to create uris for tags in store. |
| 114 */ | |
| 115 public static String TAGS_URI_PREFIX = ""; | |
| 116 public static final String TAGS_URI_KEY = "annotationmanager.uris.tags"; | |
| 117 | |
| 118 /** | |
| 119 * prefix to create uris for persons in store. | |
| 120 */ | |
| 121 public static String PERSONS_URI_PREFIX = ""; | |
| 122 public static final String PERSONS_URI_KEY = "annotationmanager.uris.persons"; | |
| 123 | |
| 124 /** | |
| 125 * prefix to create uris for groups in store. | |
| 126 */ | |
| 127 public static String GROUPS_URI_PREFIX = ""; | |
| 128 public static final String GROUPS_URI_KEY = "annotationmanager.uris.groups"; | |
| 129 | |
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130 public static final String ANNOTATIONS_URI_KEY = "annotationmanager.uris.annotations"; |
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131 |
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132 |
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133 /* (non-Javadoc) |
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134 * @see org.restlet.Application#start() |
| 18 | 135 */ |
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136 @Override |
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137 public synchronized void start() throws Exception { |
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138 configure(getContext()); |
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139 super.start(); |
| 18 | 140 } |
| 141 | |
| 142 /** | |
| 143 * Configures the restlet. | |
| 144 * Reads serverConfig, consumerKeys and graphDb config from config files and starts graphDb. | |
| 145 * Uses config from webapp context if already initialized. | |
| 71 | 146 * @param context |
| 18 | 147 */ |
| 71 | 148 protected void configure(Context context) { |
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149 ConcurrentMap<String, Object> attrs = context.getAttributes(); |
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150 ServletContext sc = (ServletContext) attrs.get("org.restlet.ext.servlet.ServletContext"); |
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151 if (sc != null) { |
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152 if (sc.getAttribute("annotationserver.log4j.configured") == null) { |
| 18 | 153 // TODO: is this the right place to run the log4j configurator? |
| 154 BasicConfigurator.configure(); | |
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155 sc.setAttribute("annotationserver.log4j.configured", "done"); |
| 18 | 156 } |
| 157 logger.info(getVersion() + " starting..."); | |
| 158 | |
| 159 /* | |
| 160 * read config from webapp | |
| 161 */ | |
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162 serverConfig = (Properties) sc.getAttribute(SERVERCONFIG_KEY); |
| 18 | 163 if (serverConfig == null) { |
| 164 serverConfig = new Properties(); | |
| 165 InputStream ps = getResourceAsStream(sc, CONFIG_PROPS_PATH); | |
| 166 if (ps != null) { | |
| 167 logger.debug("loading config from " + CONFIG_PROPS_PATH); | |
| 168 try { | |
| 169 serverConfig.load(ps); | |
| 170 /* | |
| 171 * read serverconfig options | |
| 172 */ | |
| 173 graphdbPath = serverConfig.getProperty(GRAPHDB_PATH_KEY, graphdbPath); | |
| 174 ldapServerUrl = serverConfig.getProperty(LDAP_SERVER_KEY, null); | |
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175 /* |
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176 * uri prefixes |
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177 */ |
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178 if (serverConfig.containsKey(PERSONS_URI_KEY)) { |
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179 BaseRestlet.PERSONS_URI_PREFIX = serverConfig.getProperty(PERSONS_URI_KEY); |
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180 } |
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181 if (serverConfig.containsKey(GROUPS_URI_KEY)) { |
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182 BaseRestlet.GROUPS_URI_PREFIX = serverConfig.getProperty(GROUPS_URI_KEY); |
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183 } |
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184 if (serverConfig.containsKey(TAGS_URI_KEY)) { |
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185 BaseRestlet.TAGS_URI_PREFIX = serverConfig.getProperty(TAGS_URI_KEY); |
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186 } |
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187 if (serverConfig.containsKey(ANNOTATIONS_URI_KEY)) { |
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188 AnnotationStore.ANNOTATION_URI_PREFIX = serverConfig.getProperty(ANNOTATIONS_URI_KEY); |
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189 } |
| 18 | 190 } catch (IOException e) { |
| 191 logger.warn("Error loading server config: ", e); | |
| 192 } | |
| 193 logger.debug("config: " + serverConfig); | |
| 194 } else { | |
| 195 logger.error("Unable to get resource " + CONFIG_PROPS_PATH); | |
| 196 } | |
| 197 // store config | |
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198 sc.setAttribute(SERVERCONFIG_KEY, serverConfig); |
| 18 | 199 } |
| 200 // look for database service in context | |
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201 graphDb = (GraphDatabaseService) sc.getAttribute(GRAPHDB_KEY); |
| 18 | 202 if (graphDb == null) { |
| 203 /* | |
| 204 * open database | |
| 205 */ | |
| 206 String dbFn = getResourcePath(sc, graphdbPath); | |
| 207 if (dbFn != null) { | |
| 208 logger.debug("opening DB " + dbFn); | |
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209 GraphDatabaseBuilder graphDbBuilder = new GraphDatabaseFactory().newEmbeddedDatabaseBuilder(dbFn); |
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210 graphDbBuilder.setConfig(GraphDatabaseSettings.allow_store_upgrade, "true"); |
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211 graphDb = graphDbBuilder.newGraphDatabase(); |
| 18 | 212 registerShutdownHook(graphDb); |
| 213 // store in context | |
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214 sc.setAttribute(GRAPHDB_KEY, graphDb); |
| 18 | 215 // AnnotationStore |
| 216 store = new AnnotationStore(graphDb); | |
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217 sc.setAttribute(ANNSTORE_KEY, store); |
| 18 | 218 // admin server |
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219 srv = new WrappingNeoServerBootstrapper((GraphDatabaseAPI) graphDb); |
| 18 | 220 logger.debug("Starting DB admin server..."); |
| 221 // store in context | |
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222 sc.setAttribute(GRAPHDBSRV_KEY, srv); |
| 18 | 223 srv.start(); |
| 224 } else { | |
| 225 logger.error("Unable to get resource " + dbFn); | |
| 226 } | |
| 22 | 227 } else { |
| 228 // get existing AnnotationStore | |
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229 store = (AnnotationStore) sc.getAttribute(ANNSTORE_KEY); |
| 18 | 230 } |
| 231 /* | |
| 232 * read consumerKeys from webapp | |
| 233 */ | |
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234 consumerKeys = (Properties) sc.getAttribute(CONSUMERKEYS_KEY); |
| 18 | 235 if (consumerKeys == null) { |
| 236 consumerKeys = new Properties(); | |
| 237 InputStream ps = getResourceAsStream(sc, CONSUMER_KEYS_PATH); | |
| 238 if (ps != null) { | |
| 239 logger.debug("loading consumer keys from " + CONSUMER_KEYS_PATH); | |
| 240 try { | |
| 241 consumerKeys.load(ps); | |
| 242 } catch (IOException e) { | |
| 243 // TODO Auto-generated catch block | |
| 244 e.printStackTrace(); | |
| 245 } | |
| 246 logger.debug("consumer keys: " + consumerKeys); | |
| 247 } else { | |
| 248 logger.error("Unable to get resource " + CONSUMER_KEYS_PATH); | |
| 249 } | |
| 250 // store config | |
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251 sc.setAttribute(CONSUMERKEYS_KEY, consumerKeys); |
| 18 | 252 } |
| 253 } else { | |
| 254 logger.error("Unable to get ServletContext!"); | |
| 255 } | |
| 256 } | |
| 257 | |
| 258 public abstract String getVersion(); | |
| 259 | |
| 260 /** | |
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261 * @return the authorizationMode |
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262 */ |
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263 public boolean isAuthorizationMode() { |
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264 return authorizationMode; |
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265 } |
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266 |
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267 /** |
| 19 | 268 * @return the store |
| 269 */ | |
| 270 public AnnotationStore getAnnotationStore() { | |
| 271 return store; | |
| 272 } | |
| 273 | |
| 274 /** | |
| 18 | 275 * returns consumer secret for consumer key. returns null if consumer key |
| 276 * doesn't exist. | |
| 277 * | |
| 278 * @param consumerKey | |
| 279 * @return | |
| 280 */ | |
| 281 public String getConsumerSecret(String consumerKey) { | |
| 282 return consumerKeys.getProperty(consumerKey); | |
| 283 } | |
| 284 | |
| 285 /** | |
| 286 * Hole den vollen Benutzernamen aus dem LDAP | |
| 287 * | |
| 288 * @param creator | |
| 289 * @return | |
| 290 */ | |
| 291 public String getFullNameFromLdap(String creator) { | |
| 292 String retString = creator; // falls nichts gefunden wird einfach den | |
| 293 // creator zurueckgeben | |
| 294 if (ldapServerUrl == null) { | |
| 295 return retString; | |
| 296 } | |
| 297 Hashtable<String, String> env = new Hashtable<String, String>(); | |
| 298 String sp = "com.sun.jndi.ldap.LdapCtxFactory"; | |
| 299 env.put(javax.naming.Context.INITIAL_CONTEXT_FACTORY, sp); | |
| 300 env.put(javax.naming.Context.PROVIDER_URL, ldapServerUrl); | |
| 301 | |
| 302 DirContext dctx; | |
| 303 try { | |
| 304 dctx = new InitialDirContext(env); | |
| 305 } catch (NamingException e) { | |
| 306 logger.error("Error in getFullNameFromLDAP!", e); | |
| 307 return retString; | |
| 308 } | |
| 309 | |
| 310 String base = "ou=people"; | |
| 311 | |
| 312 SearchControls sc = new SearchControls(); | |
| 313 String[] attributeFilter = { "cn", "mail" }; | |
| 314 sc.setReturningAttributes(attributeFilter); | |
| 315 sc.setSearchScope(SearchControls.SUBTREE_SCOPE); | |
| 316 | |
| 317 String filter = "(uid=" + creator + ")"; | |
| 318 | |
| 319 try { | |
| 320 NamingEnumeration<SearchResult> results = dctx.search(base, filter, sc); | |
| 321 while (results.hasMore()) { | |
| 322 SearchResult sr = (SearchResult) results.next(); | |
| 323 javax.naming.directory.Attributes attrs = sr.getAttributes(); | |
| 324 | |
| 325 Attribute attr = attrs.get("cn"); | |
| 326 retString = (String) attr.get(); | |
| 327 } | |
| 328 } catch (NamingException e) { | |
| 329 logger.error("Error in getFullNameFromLDAP!", e); | |
| 330 } | |
| 331 | |
| 332 try { | |
| 333 dctx.close(); | |
| 334 } catch (NamingException e) { | |
| 335 logger.error("Error in getFullNameFromLDAP!", e); | |
| 336 } | |
| 337 return retString; | |
| 338 } | |
| 339 | |
| 340 /** | |
| 341 * returns resource from path (in webapp) as InputStream. | |
| 342 * | |
| 343 * @param sc | |
| 344 * @param path | |
| 345 * @return | |
| 346 */ | |
| 347 protected InputStream getResourceAsStream(ServletContext sc, String path) { | |
| 71 | 348 InputStream ps = null; |
| 349 if (sc == null) { | |
|
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350 // no servlet context -> use class loader |
| 71 | 351 ps = Thread.currentThread().getContextClassLoader().getResourceAsStream(path); |
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352 /* Request request = new Request(Method.GET, "riap://component/ping"); |
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353 Response response = getContext().getClientDispatcher().handle(request); |
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354 Representation repr = response.getEntity(); */ |
| 71 | 355 } else { |
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356 // try path in webapp first |
| 71 | 357 ps = sc.getResourceAsStream(path); |
| 358 if (ps == null) { | |
| 359 // try as file | |
| 360 File pf = new File(sc.getRealPath(path)); | |
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361 if (pf.canRead()) { |
| 71 | 362 logger.debug("trying file for: " + pf); |
| 363 try { | |
| 364 ps = new FileInputStream(pf); | |
| 365 } catch (FileNotFoundException e) { | |
| 366 logger.error(e); | |
| 367 } | |
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368 } else { |
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369 // use class loader |
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370 ps = Thread.currentThread().getContextClassLoader().getResourceAsStream(path); |
| 18 | 371 } |
| 372 } | |
| 373 } | |
| 374 return ps; | |
| 375 } | |
| 376 | |
| 377 /** | |
| 378 * get a real file name for a web app file pathname. | |
| 379 * | |
| 380 * If filename starts with "/" its treated as absolute else the path is | |
| 381 * appended to the base directory of the web-app. | |
| 382 * | |
| 383 * @param filename | |
| 384 * @param sc | |
| 385 * @return | |
| 386 */ | |
| 387 public static String getResourcePath(ServletContext sc, String filename) { | |
| 388 File f = new File(filename); | |
| 389 // is the filename absolute? | |
| 71 | 390 if (!f.isAbsolute() && sc != null) { |
| 18 | 391 // relative path -> use getRealPath to resolve in webapp |
| 392 filename = sc.getRealPath(filename); | |
| 393 } | |
| 394 return filename; | |
| 395 } | |
| 396 | |
| 397 /* | |
| 398 * (non-Javadoc) | |
| 399 * | |
| 400 * @see org.restlet.Application#stop() | |
| 401 */ | |
| 402 @Override | |
| 403 public synchronized void stop() throws Exception { | |
| 404 /* | |
| 405 * trying to clean up databases, not sure if this is the right way... | |
| 406 */ | |
| 407 if (srv != null) { | |
| 408 logger.debug("Stopping DB admin server..."); | |
| 409 srv.stop(); | |
| 410 srv = null; | |
| 411 } | |
| 412 if (graphDb != null) { | |
| 413 logger.debug("Stopping DB..."); | |
| 414 graphDb.shutdown(); | |
| 415 graphDb = null; | |
| 416 } | |
| 417 super.stop(); | |
| 418 } | |
| 419 | |
| 420 private static void registerShutdownHook(final GraphDatabaseService graphDb) { | |
| 421 // Registers a shutdown hook for the Neo4j instance so that it | |
| 422 // shuts down nicely when the VM exits (even if you "Ctrl-C" the | |
| 423 // running example before it's completed) | |
| 424 Runtime.getRuntime().addShutdownHook(new Thread() { | |
| 425 @Override | |
| 426 public void run() { | |
| 427 graphDb.shutdown(); | |
| 428 } | |
| 429 }); | |
| 430 } | |
| 431 | |
| 432 } |