Mercurial > hg > AnnotationManagerN4J
annotate src/main/java/de/mpiwg/itgroup/annotations/restlet/BaseRestlet.java @ 94:fcb6fe10e08c
added config option for webapp URL prefix.
| author | casties |
|---|---|
| date | Tue, 10 Feb 2015 17:45:56 +0100 |
| parents | 247cbbb385de |
| children |
| 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% | |
| 86 | 23 * Author: Robert Casties (casties@mpiwg-berlin.mpg.de), |
| 24 * Dirk Wintergruen (dwinter@mpiwg-berlin.mpg.de) | |
| 70 | 25 */ |
| 26 | |
| 18 | 27 import java.io.File; |
| 28 import java.io.FileInputStream; | |
| 29 import java.io.FileNotFoundException; | |
| 30 import java.io.IOException; | |
| 31 import java.io.InputStream; | |
| 32 import java.util.Hashtable; | |
| 33 import java.util.Properties; | |
| 71 | 34 import java.util.concurrent.ConcurrentMap; |
| 75 | 35 import java.util.logging.Logger; |
| 18 | 36 |
| 37 import javax.naming.NamingEnumeration; | |
| 38 import javax.naming.NamingException; | |
| 39 import javax.naming.directory.Attribute; | |
| 40 import javax.naming.directory.DirContext; | |
| 41 import javax.naming.directory.InitialDirContext; | |
| 42 import javax.naming.directory.SearchControls; | |
| 43 import javax.naming.directory.SearchResult; | |
| 44 import javax.servlet.ServletContext; | |
| 45 | |
| 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; | |
| 54 | |
| 55 import de.mpiwg.itgroup.annotations.neo4j.AnnotationStore; | |
| 56 | |
| 57 public abstract class BaseRestlet extends Application { | |
| 58 | |
| 89 | 59 public static Logger logger = Logger.getLogger(BaseRestlet.class.getCanonicalName()); |
| 18 | 60 |
| 61 /** | |
|
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62 * Properties holding consumer keys and secrets. |
| 18 | 63 */ |
| 64 protected Properties consumerKeys; | |
| 71 | 65 public String CONSUMER_KEYS_PATH = "consumerkeys.property"; |
| 18 | 66 public static final String CONSUMERKEYS_KEY = "annotationmanager.consumerkeys"; |
| 67 | |
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68 /** |
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69 * Properties holding server config. |
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70 */ |
| 18 | 71 protected Properties serverConfig; |
| 71 | 72 public String CONFIG_PROPS_PATH = "serverconfig.property"; |
| 18 | 73 public static final String SERVERCONFIG_KEY = "annotationmanager.serverconfig"; |
| 74 | |
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75 /** |
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76 * database instance; |
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77 */ |
| 18 | 78 protected GraphDatabaseService graphDb; |
| 79 public static final String GRAPHDB_KEY = "annotationmanager.graphdb"; | |
| 80 public static final String GRAPHDB_PATH_KEY = "annotationmanager.graphdb.path"; | |
| 71 | 81 public String graphdbPath = "neo4j-annotation-db"; |
| 18 | 82 |
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83 /** |
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84 * database interface server instance. |
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85 */ |
| 18 | 86 protected WrappingNeoServerBootstrapper srv; |
| 87 public static final String GRAPHDBSRV_KEY = "annotationmanager.graphdb.srv"; | |
| 88 | |
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89 /** |
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90 * annotation store instance. |
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91 */ |
| 18 | 92 protected AnnotationStore store; |
| 93 public static final String ANNSTORE_KEY = "annotationmanager.store"; | |
| 94 | |
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95 /** |
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96 * LDAP server URI (for looking up full user names). |
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97 */ |
| 18 | 98 protected String ldapServerUrl; |
| 99 public static final String LDAP_SERVER_KEY = "annotationmanager.ldapserver.url"; | |
| 100 | |
| 86 | 101 /** |
| 102 * web frontend admin user name | |
| 103 */ | |
| 50 | 104 public static final String ADMIN_USER_KEY = "annotationmanager.admin.user"; |
| 86 | 105 /** |
| 106 * web frontend admin user password | |
| 107 */ | |
| 50 | 108 public static final String ADMIN_PASSWORD_KEY = "annotationmanager.admin.password"; |
| 109 | |
| 18 | 110 /** |
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111 * run in authorization mode i.e. with tokens. |
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112 */ |
| 58 | 113 protected boolean authorizationMode = false; |
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114 public static final String AUTHORIZATION_MODE_KEY = "annotationmanager.authorization"; |
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115 |
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116 /** |
| 94 | 117 * prefix for webapp URLs (if needed by proxying). |
| 118 */ | |
| 119 protected String webappUriPrefix = null; | |
| 120 public static final String WEBAPP_PREFIX = "annotationmanager.webapp.prefix"; | |
| 121 | |
| 122 /** | |
| 58 | 123 * prefix to create uris for tags in store. |
| 124 */ | |
| 125 public static String TAGS_URI_PREFIX = ""; | |
| 126 public static final String TAGS_URI_KEY = "annotationmanager.uris.tags"; | |
| 127 | |
| 128 /** | |
| 129 * prefix to create uris for persons in store. | |
| 130 */ | |
| 131 public static String PERSONS_URI_PREFIX = ""; | |
| 132 public static final String PERSONS_URI_KEY = "annotationmanager.uris.persons"; | |
| 133 | |
| 134 /** | |
| 135 * prefix to create uris for groups in store. | |
| 136 */ | |
| 137 public static String GROUPS_URI_PREFIX = ""; | |
| 138 public static final String GROUPS_URI_KEY = "annotationmanager.uris.groups"; | |
| 139 | |
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140 public static final String ANNOTATIONS_URI_KEY = "annotationmanager.uris.annotations"; |
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141 |
|
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142 |
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143 /* (non-Javadoc) |
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144 * @see org.restlet.Application#start() |
| 18 | 145 */ |
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146 @Override |
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147 public synchronized void start() throws Exception { |
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148 configure(getContext()); |
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149 super.start(); |
| 18 | 150 } |
| 151 | |
| 152 /** | |
| 153 * Configures the restlet. | |
| 154 * Reads serverConfig, consumerKeys and graphDb config from config files and starts graphDb. | |
| 155 * Uses config from webapp context if already initialized. | |
| 71 | 156 * @param context |
| 18 | 157 */ |
| 71 | 158 protected void configure(Context context) { |
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159 ConcurrentMap<String, Object> attrs = context.getAttributes(); |
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160 ServletContext sc = (ServletContext) attrs.get("org.restlet.ext.servlet.ServletContext"); |
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161 if (sc != null) { |
| 89 | 162 logger.info(getVersion() + " starting..."); |
| 18 | 163 |
| 164 /* | |
| 165 * read config from webapp | |
| 166 */ | |
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167 serverConfig = (Properties) sc.getAttribute(SERVERCONFIG_KEY); |
| 18 | 168 if (serverConfig == null) { |
| 169 serverConfig = new Properties(); | |
| 170 InputStream ps = getResourceAsStream(sc, CONFIG_PROPS_PATH); | |
| 171 if (ps != null) { | |
| 75 | 172 logger.fine("loading config from " + CONFIG_PROPS_PATH); |
| 18 | 173 try { |
| 174 serverConfig.load(ps); | |
| 175 /* | |
| 176 * read serverconfig options | |
| 177 */ | |
| 178 graphdbPath = serverConfig.getProperty(GRAPHDB_PATH_KEY, graphdbPath); | |
| 179 ldapServerUrl = serverConfig.getProperty(LDAP_SERVER_KEY, null); | |
| 94 | 180 webappUriPrefix = serverConfig.getProperty(WEBAPP_PREFIX, null); |
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181 /* |
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182 * uri prefixes |
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183 */ |
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184 if (serverConfig.containsKey(PERSONS_URI_KEY)) { |
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185 BaseRestlet.PERSONS_URI_PREFIX = serverConfig.getProperty(PERSONS_URI_KEY); |
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186 } |
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187 if (serverConfig.containsKey(GROUPS_URI_KEY)) { |
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188 BaseRestlet.GROUPS_URI_PREFIX = serverConfig.getProperty(GROUPS_URI_KEY); |
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189 } |
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190 if (serverConfig.containsKey(TAGS_URI_KEY)) { |
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191 BaseRestlet.TAGS_URI_PREFIX = serverConfig.getProperty(TAGS_URI_KEY); |
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192 } |
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193 if (serverConfig.containsKey(ANNOTATIONS_URI_KEY)) { |
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194 AnnotationStore.ANNOTATION_URI_PREFIX = serverConfig.getProperty(ANNOTATIONS_URI_KEY); |
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195 } |
| 18 | 196 } catch (IOException e) { |
| 75 | 197 logger.warning("Error loading server config: "+e.toString()); |
| 18 | 198 } |
| 75 | 199 logger.fine("config: " + serverConfig); |
| 18 | 200 } else { |
| 75 | 201 logger.severe("Unable to get resource " + CONFIG_PROPS_PATH); |
| 18 | 202 } |
| 203 // store config | |
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204 sc.setAttribute(SERVERCONFIG_KEY, serverConfig); |
| 18 | 205 } |
| 206 // look for database service in context | |
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207 graphDb = (GraphDatabaseService) sc.getAttribute(GRAPHDB_KEY); |
| 18 | 208 if (graphDb == null) { |
| 209 /* | |
| 210 * open database | |
| 211 */ | |
| 212 String dbFn = getResourcePath(sc, graphdbPath); | |
| 213 if (dbFn != null) { | |
| 75 | 214 logger.fine("opening DB " + dbFn); |
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215 GraphDatabaseBuilder graphDbBuilder = new GraphDatabaseFactory().newEmbeddedDatabaseBuilder(dbFn); |
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216 graphDbBuilder.setConfig(GraphDatabaseSettings.allow_store_upgrade, "true"); |
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217 graphDb = graphDbBuilder.newGraphDatabase(); |
| 18 | 218 registerShutdownHook(graphDb); |
| 219 // store in context | |
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220 sc.setAttribute(GRAPHDB_KEY, graphDb); |
| 18 | 221 // AnnotationStore |
| 222 store = new AnnotationStore(graphDb); | |
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223 sc.setAttribute(ANNSTORE_KEY, store); |
| 18 | 224 // admin server |
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225 srv = new WrappingNeoServerBootstrapper((GraphDatabaseAPI) graphDb); |
| 75 | 226 logger.fine("Starting DB admin server..."); |
| 18 | 227 // store in context |
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228 sc.setAttribute(GRAPHDBSRV_KEY, srv); |
| 18 | 229 srv.start(); |
| 230 } else { | |
| 75 | 231 logger.severe("Unable to get resource " + dbFn); |
| 18 | 232 } |
| 22 | 233 } else { |
| 234 // get existing AnnotationStore | |
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235 store = (AnnotationStore) sc.getAttribute(ANNSTORE_KEY); |
| 18 | 236 } |
| 237 /* | |
| 238 * read consumerKeys from webapp | |
| 239 */ | |
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240 consumerKeys = (Properties) sc.getAttribute(CONSUMERKEYS_KEY); |
| 18 | 241 if (consumerKeys == null) { |
| 242 consumerKeys = new Properties(); | |
| 243 InputStream ps = getResourceAsStream(sc, CONSUMER_KEYS_PATH); | |
| 244 if (ps != null) { | |
| 75 | 245 logger.fine("loading consumer keys from " + CONSUMER_KEYS_PATH); |
| 18 | 246 try { |
| 247 consumerKeys.load(ps); | |
| 248 } catch (IOException e) { | |
| 89 | 249 logger.fine("Error loading consumer keys: "+e); |
| 18 | 250 } |
| 75 | 251 logger.fine("consumer keys: " + consumerKeys); |
| 18 | 252 } else { |
| 75 | 253 logger.severe("Unable to get resource " + CONSUMER_KEYS_PATH); |
| 18 | 254 } |
| 255 // store config | |
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256 sc.setAttribute(CONSUMERKEYS_KEY, consumerKeys); |
| 18 | 257 } |
| 258 } else { | |
| 75 | 259 logger.severe("Unable to get ServletContext!"); |
| 18 | 260 } |
| 261 } | |
| 262 | |
| 263 public abstract String getVersion(); | |
| 264 | |
| 265 /** | |
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266 * @return the authorizationMode |
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267 */ |
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268 public boolean isAuthorizationMode() { |
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269 return authorizationMode; |
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270 } |
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271 |
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272 /** |
| 19 | 273 * @return the store |
| 274 */ | |
| 275 public AnnotationStore getAnnotationStore() { | |
| 276 return store; | |
| 277 } | |
| 278 | |
| 279 /** | |
| 18 | 280 * returns consumer secret for consumer key. returns null if consumer key |
| 281 * doesn't exist. | |
| 282 * | |
| 283 * @param consumerKey | |
| 284 * @return | |
| 285 */ | |
| 286 public String getConsumerSecret(String consumerKey) { | |
| 287 return consumerKeys.getProperty(consumerKey); | |
| 288 } | |
| 289 | |
| 290 /** | |
| 86 | 291 * Return the full name (String) of the person with the given user-id. |
| 292 * | |
| 293 * Contacts a naming service (currently LDAP). | |
| 294 * | |
| 295 * @param userId | |
| 296 * @return full-name | |
| 297 */ | |
| 298 public String getFullNameForId(String userId) { | |
| 299 return getFullNameFromLdap(userId); | |
| 300 } | |
| 301 | |
| 302 /** | |
| 18 | 303 * Hole den vollen Benutzernamen aus dem LDAP |
| 304 * | |
| 305 * @param creator | |
| 306 * @return | |
| 307 */ | |
| 308 public String getFullNameFromLdap(String creator) { | |
| 309 String retString = creator; // falls nichts gefunden wird einfach den | |
| 310 // creator zurueckgeben | |
| 311 if (ldapServerUrl == null) { | |
| 312 return retString; | |
| 313 } | |
| 314 Hashtable<String, String> env = new Hashtable<String, String>(); | |
| 315 String sp = "com.sun.jndi.ldap.LdapCtxFactory"; | |
| 316 env.put(javax.naming.Context.INITIAL_CONTEXT_FACTORY, sp); | |
| 317 env.put(javax.naming.Context.PROVIDER_URL, ldapServerUrl); | |
| 318 | |
| 319 DirContext dctx; | |
| 320 try { | |
| 321 dctx = new InitialDirContext(env); | |
| 322 } catch (NamingException e) { | |
| 75 | 323 logger.warning("Error in getFullNameFromLDAP! "+e); |
| 18 | 324 return retString; |
| 325 } | |
| 326 | |
| 327 String base = "ou=people"; | |
| 328 | |
| 329 SearchControls sc = new SearchControls(); | |
| 330 String[] attributeFilter = { "cn", "mail" }; | |
| 331 sc.setReturningAttributes(attributeFilter); | |
| 332 sc.setSearchScope(SearchControls.SUBTREE_SCOPE); | |
| 333 | |
| 334 String filter = "(uid=" + creator + ")"; | |
| 335 | |
| 336 try { | |
| 337 NamingEnumeration<SearchResult> results = dctx.search(base, filter, sc); | |
| 338 while (results.hasMore()) { | |
| 339 SearchResult sr = (SearchResult) results.next(); | |
| 340 javax.naming.directory.Attributes attrs = sr.getAttributes(); | |
| 341 | |
| 342 Attribute attr = attrs.get("cn"); | |
| 343 retString = (String) attr.get(); | |
| 344 } | |
| 345 } catch (NamingException e) { | |
| 75 | 346 logger.warning("Error in getFullNameFromLDAP!"+e); |
| 18 | 347 } |
| 348 | |
| 349 try { | |
| 350 dctx.close(); | |
| 351 } catch (NamingException e) { | |
| 75 | 352 logger.warning("Error in getFullNameFromLDAP!"+e); |
| 18 | 353 } |
| 354 return retString; | |
| 355 } | |
| 356 | |
| 357 /** | |
| 74 | 358 * returns resource from path as InputStream. |
| 359 * | |
| 360 * Tries path in webapp first, then uses classpath loader. | |
| 361 * Relative paths in webapp start in /WEB-INF/. | |
| 18 | 362 * |
| 363 * @param sc | |
| 364 * @param path | |
| 365 * @return | |
| 366 */ | |
| 367 protected InputStream getResourceAsStream(ServletContext sc, String path) { | |
| 71 | 368 InputStream ps = null; |
| 369 if (sc == null) { | |
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370 // no servlet context -> use class loader |
| 71 | 371 ps = Thread.currentThread().getContextClassLoader().getResourceAsStream(path); |
| 372 } else { | |
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373 // try path in webapp first |
| 74 | 374 String webPath = path; |
| 375 if (!webPath.startsWith("/")) { | |
| 376 // relative path in webapp starts in WEB-INF | |
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377 webPath = "/WEB-INF/" + webPath; |
| 74 | 378 } |
| 379 ps = sc.getResourceAsStream(webPath); | |
| 71 | 380 if (ps == null) { |
| 381 // try as file | |
| 74 | 382 File pf = new File(sc.getRealPath(webPath)); |
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383 if (pf.canRead()) { |
| 75 | 384 logger.fine("trying file for: " + pf); |
| 71 | 385 try { |
| 386 ps = new FileInputStream(pf); | |
| 387 } catch (FileNotFoundException e) { | |
| 75 | 388 logger.severe(e.toString()); |
| 71 | 389 } |
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390 } else { |
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391 // use class loader |
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392 ps = Thread.currentThread().getContextClassLoader().getResourceAsStream(path); |
| 18 | 393 } |
| 394 } | |
| 395 } | |
| 396 return ps; | |
| 397 } | |
| 398 | |
| 399 /** | |
| 400 * get a real file name for a web app file pathname. | |
| 401 * | |
| 402 * If filename starts with "/" its treated as absolute else the path is | |
| 74 | 403 * appended to the /WEB-INF/ directory in the web-app. |
| 18 | 404 * |
| 405 * @param filename | |
| 406 * @param sc | |
| 407 * @return | |
| 408 */ | |
| 409 public static String getResourcePath(ServletContext sc, String filename) { | |
| 410 File f = new File(filename); | |
| 411 // is the filename absolute? | |
| 71 | 412 if (!f.isAbsolute() && sc != null) { |
| 18 | 413 // relative path -> use getRealPath to resolve in webapp |
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414 filename = sc.getRealPath("/WEB-INF/" + filename); |
| 18 | 415 } |
| 416 return filename; | |
| 417 } | |
| 418 | |
| 419 /* | |
| 420 * (non-Javadoc) | |
| 421 * | |
| 422 * @see org.restlet.Application#stop() | |
| 423 */ | |
| 424 @Override | |
| 425 public synchronized void stop() throws Exception { | |
| 426 /* | |
| 427 * trying to clean up databases, not sure if this is the right way... | |
| 428 */ | |
| 429 if (srv != null) { | |
| 75 | 430 logger.info("Stopping DB admin server..."); |
| 18 | 431 srv.stop(); |
| 432 srv = null; | |
| 433 } | |
| 434 if (graphDb != null) { | |
| 75 | 435 logger.info("Stopping DB..."); |
| 18 | 436 graphDb.shutdown(); |
| 437 graphDb = null; | |
| 438 } | |
| 439 super.stop(); | |
| 440 } | |
| 441 | |
| 442 private static void registerShutdownHook(final GraphDatabaseService graphDb) { | |
| 443 // Registers a shutdown hook for the Neo4j instance so that it | |
| 444 // shuts down nicely when the VM exits (even if you "Ctrl-C" the | |
| 445 // running example before it's completed) | |
| 446 Runtime.getRuntime().addShutdownHook(new Thread() { | |
| 447 @Override | |
| 448 public void run() { | |
| 449 graphDb.shutdown(); | |
| 450 } | |
| 451 }); | |
| 452 } | |
| 453 | |
| 454 } |