Mercurial > hg > AnnotationManagerN4J
annotate src/main/java/de/mpiwg/itgroup/annotations/restlet/BaseRestlet.java @ 89:247cbbb385de
improved logging.
| author | casties |
|---|---|
| date | Wed, 04 Feb 2015 19:37:02 +0100 |
| parents | e3f0613b2f2d |
| children | fcb6fe10e08c |
| 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 /** |
| 58 | 117 * prefix to create uris for tags in store. |
| 118 */ | |
| 119 public static String TAGS_URI_PREFIX = ""; | |
| 120 public static final String TAGS_URI_KEY = "annotationmanager.uris.tags"; | |
| 121 | |
| 122 /** | |
| 123 * prefix to create uris for persons in store. | |
| 124 */ | |
| 125 public static String PERSONS_URI_PREFIX = ""; | |
| 126 public static final String PERSONS_URI_KEY = "annotationmanager.uris.persons"; | |
| 127 | |
| 128 /** | |
| 129 * prefix to create uris for groups in store. | |
| 130 */ | |
| 131 public static String GROUPS_URI_PREFIX = ""; | |
| 132 public static final String GROUPS_URI_KEY = "annotationmanager.uris.groups"; | |
| 133 | |
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134 public static final String ANNOTATIONS_URI_KEY = "annotationmanager.uris.annotations"; |
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135 |
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136 |
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137 /* (non-Javadoc) |
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138 * @see org.restlet.Application#start() |
| 18 | 139 */ |
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140 @Override |
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141 public synchronized void start() throws Exception { |
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142 configure(getContext()); |
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143 super.start(); |
| 18 | 144 } |
| 145 | |
| 146 /** | |
| 147 * Configures the restlet. | |
| 148 * Reads serverConfig, consumerKeys and graphDb config from config files and starts graphDb. | |
| 149 * Uses config from webapp context if already initialized. | |
| 71 | 150 * @param context |
| 18 | 151 */ |
| 71 | 152 protected void configure(Context context) { |
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153 ConcurrentMap<String, Object> attrs = context.getAttributes(); |
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154 ServletContext sc = (ServletContext) attrs.get("org.restlet.ext.servlet.ServletContext"); |
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155 if (sc != null) { |
| 89 | 156 logger.info(getVersion() + " starting..."); |
| 18 | 157 |
| 158 /* | |
| 159 * read config from webapp | |
| 160 */ | |
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161 serverConfig = (Properties) sc.getAttribute(SERVERCONFIG_KEY); |
| 18 | 162 if (serverConfig == null) { |
| 163 serverConfig = new Properties(); | |
| 164 InputStream ps = getResourceAsStream(sc, CONFIG_PROPS_PATH); | |
| 165 if (ps != null) { | |
| 75 | 166 logger.fine("loading config from " + CONFIG_PROPS_PATH); |
| 18 | 167 try { |
| 168 serverConfig.load(ps); | |
| 169 /* | |
| 170 * read serverconfig options | |
| 171 */ | |
| 172 graphdbPath = serverConfig.getProperty(GRAPHDB_PATH_KEY, graphdbPath); | |
| 173 ldapServerUrl = serverConfig.getProperty(LDAP_SERVER_KEY, null); | |
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174 /* |
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175 * uri prefixes |
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176 */ |
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177 if (serverConfig.containsKey(PERSONS_URI_KEY)) { |
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178 BaseRestlet.PERSONS_URI_PREFIX = serverConfig.getProperty(PERSONS_URI_KEY); |
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179 } |
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180 if (serverConfig.containsKey(GROUPS_URI_KEY)) { |
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181 BaseRestlet.GROUPS_URI_PREFIX = serverConfig.getProperty(GROUPS_URI_KEY); |
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182 } |
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183 if (serverConfig.containsKey(TAGS_URI_KEY)) { |
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184 BaseRestlet.TAGS_URI_PREFIX = serverConfig.getProperty(TAGS_URI_KEY); |
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185 } |
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186 if (serverConfig.containsKey(ANNOTATIONS_URI_KEY)) { |
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187 AnnotationStore.ANNOTATION_URI_PREFIX = serverConfig.getProperty(ANNOTATIONS_URI_KEY); |
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188 } |
| 18 | 189 } catch (IOException e) { |
| 75 | 190 logger.warning("Error loading server config: "+e.toString()); |
| 18 | 191 } |
| 75 | 192 logger.fine("config: " + serverConfig); |
| 18 | 193 } else { |
| 75 | 194 logger.severe("Unable to get resource " + CONFIG_PROPS_PATH); |
| 18 | 195 } |
| 196 // store config | |
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197 sc.setAttribute(SERVERCONFIG_KEY, serverConfig); |
| 18 | 198 } |
| 199 // look for database service in context | |
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200 graphDb = (GraphDatabaseService) sc.getAttribute(GRAPHDB_KEY); |
| 18 | 201 if (graphDb == null) { |
| 202 /* | |
| 203 * open database | |
| 204 */ | |
| 205 String dbFn = getResourcePath(sc, graphdbPath); | |
| 206 if (dbFn != null) { | |
| 75 | 207 logger.fine("opening DB " + dbFn); |
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208 GraphDatabaseBuilder graphDbBuilder = new GraphDatabaseFactory().newEmbeddedDatabaseBuilder(dbFn); |
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209 graphDbBuilder.setConfig(GraphDatabaseSettings.allow_store_upgrade, "true"); |
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210 graphDb = graphDbBuilder.newGraphDatabase(); |
| 18 | 211 registerShutdownHook(graphDb); |
| 212 // store in context | |
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213 sc.setAttribute(GRAPHDB_KEY, graphDb); |
| 18 | 214 // AnnotationStore |
| 215 store = new AnnotationStore(graphDb); | |
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216 sc.setAttribute(ANNSTORE_KEY, store); |
| 18 | 217 // admin server |
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218 srv = new WrappingNeoServerBootstrapper((GraphDatabaseAPI) graphDb); |
| 75 | 219 logger.fine("Starting DB admin server..."); |
| 18 | 220 // store in context |
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221 sc.setAttribute(GRAPHDBSRV_KEY, srv); |
| 18 | 222 srv.start(); |
| 223 } else { | |
| 75 | 224 logger.severe("Unable to get resource " + dbFn); |
| 18 | 225 } |
| 22 | 226 } else { |
| 227 // get existing AnnotationStore | |
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228 store = (AnnotationStore) sc.getAttribute(ANNSTORE_KEY); |
| 18 | 229 } |
| 230 /* | |
| 231 * read consumerKeys from webapp | |
| 232 */ | |
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233 consumerKeys = (Properties) sc.getAttribute(CONSUMERKEYS_KEY); |
| 18 | 234 if (consumerKeys == null) { |
| 235 consumerKeys = new Properties(); | |
| 236 InputStream ps = getResourceAsStream(sc, CONSUMER_KEYS_PATH); | |
| 237 if (ps != null) { | |
| 75 | 238 logger.fine("loading consumer keys from " + CONSUMER_KEYS_PATH); |
| 18 | 239 try { |
| 240 consumerKeys.load(ps); | |
| 241 } catch (IOException e) { | |
| 89 | 242 logger.fine("Error loading consumer keys: "+e); |
| 18 | 243 } |
| 75 | 244 logger.fine("consumer keys: " + consumerKeys); |
| 18 | 245 } else { |
| 75 | 246 logger.severe("Unable to get resource " + CONSUMER_KEYS_PATH); |
| 18 | 247 } |
| 248 // store config | |
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249 sc.setAttribute(CONSUMERKEYS_KEY, consumerKeys); |
| 18 | 250 } |
| 251 } else { | |
| 75 | 252 logger.severe("Unable to get ServletContext!"); |
| 18 | 253 } |
| 254 } | |
| 255 | |
| 256 public abstract String getVersion(); | |
| 257 | |
| 258 /** | |
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259 * @return the authorizationMode |
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260 */ |
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261 public boolean isAuthorizationMode() { |
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262 return authorizationMode; |
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263 } |
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264 |
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265 /** |
| 19 | 266 * @return the store |
| 267 */ | |
| 268 public AnnotationStore getAnnotationStore() { | |
| 269 return store; | |
| 270 } | |
| 271 | |
| 272 /** | |
| 18 | 273 * returns consumer secret for consumer key. returns null if consumer key |
| 274 * doesn't exist. | |
| 275 * | |
| 276 * @param consumerKey | |
| 277 * @return | |
| 278 */ | |
| 279 public String getConsumerSecret(String consumerKey) { | |
| 280 return consumerKeys.getProperty(consumerKey); | |
| 281 } | |
| 282 | |
| 283 /** | |
| 86 | 284 * Return the full name (String) of the person with the given user-id. |
| 285 * | |
| 286 * Contacts a naming service (currently LDAP). | |
| 287 * | |
| 288 * @param userId | |
| 289 * @return full-name | |
| 290 */ | |
| 291 public String getFullNameForId(String userId) { | |
| 292 return getFullNameFromLdap(userId); | |
| 293 } | |
| 294 | |
| 295 /** | |
| 18 | 296 * Hole den vollen Benutzernamen aus dem LDAP |
| 297 * | |
| 298 * @param creator | |
| 299 * @return | |
| 300 */ | |
| 301 public String getFullNameFromLdap(String creator) { | |
| 302 String retString = creator; // falls nichts gefunden wird einfach den | |
| 303 // creator zurueckgeben | |
| 304 if (ldapServerUrl == null) { | |
| 305 return retString; | |
| 306 } | |
| 307 Hashtable<String, String> env = new Hashtable<String, String>(); | |
| 308 String sp = "com.sun.jndi.ldap.LdapCtxFactory"; | |
| 309 env.put(javax.naming.Context.INITIAL_CONTEXT_FACTORY, sp); | |
| 310 env.put(javax.naming.Context.PROVIDER_URL, ldapServerUrl); | |
| 311 | |
| 312 DirContext dctx; | |
| 313 try { | |
| 314 dctx = new InitialDirContext(env); | |
| 315 } catch (NamingException e) { | |
| 75 | 316 logger.warning("Error in getFullNameFromLDAP! "+e); |
| 18 | 317 return retString; |
| 318 } | |
| 319 | |
| 320 String base = "ou=people"; | |
| 321 | |
| 322 SearchControls sc = new SearchControls(); | |
| 323 String[] attributeFilter = { "cn", "mail" }; | |
| 324 sc.setReturningAttributes(attributeFilter); | |
| 325 sc.setSearchScope(SearchControls.SUBTREE_SCOPE); | |
| 326 | |
| 327 String filter = "(uid=" + creator + ")"; | |
| 328 | |
| 329 try { | |
| 330 NamingEnumeration<SearchResult> results = dctx.search(base, filter, sc); | |
| 331 while (results.hasMore()) { | |
| 332 SearchResult sr = (SearchResult) results.next(); | |
| 333 javax.naming.directory.Attributes attrs = sr.getAttributes(); | |
| 334 | |
| 335 Attribute attr = attrs.get("cn"); | |
| 336 retString = (String) attr.get(); | |
| 337 } | |
| 338 } catch (NamingException e) { | |
| 75 | 339 logger.warning("Error in getFullNameFromLDAP!"+e); |
| 18 | 340 } |
| 341 | |
| 342 try { | |
| 343 dctx.close(); | |
| 344 } catch (NamingException e) { | |
| 75 | 345 logger.warning("Error in getFullNameFromLDAP!"+e); |
| 18 | 346 } |
| 347 return retString; | |
| 348 } | |
| 349 | |
| 350 /** | |
| 74 | 351 * returns resource from path as InputStream. |
| 352 * | |
| 353 * Tries path in webapp first, then uses classpath loader. | |
| 354 * Relative paths in webapp start in /WEB-INF/. | |
| 18 | 355 * |
| 356 * @param sc | |
| 357 * @param path | |
| 358 * @return | |
| 359 */ | |
| 360 protected InputStream getResourceAsStream(ServletContext sc, String path) { | |
| 71 | 361 InputStream ps = null; |
| 362 if (sc == null) { | |
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363 // no servlet context -> use class loader |
| 71 | 364 ps = Thread.currentThread().getContextClassLoader().getResourceAsStream(path); |
| 365 } else { | |
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366 // try path in webapp first |
| 74 | 367 String webPath = path; |
| 368 if (!webPath.startsWith("/")) { | |
| 369 // relative path in webapp starts in WEB-INF | |
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370 webPath = "/WEB-INF/" + webPath; |
| 74 | 371 } |
| 372 ps = sc.getResourceAsStream(webPath); | |
| 71 | 373 if (ps == null) { |
| 374 // try as file | |
| 74 | 375 File pf = new File(sc.getRealPath(webPath)); |
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376 if (pf.canRead()) { |
| 75 | 377 logger.fine("trying file for: " + pf); |
| 71 | 378 try { |
| 379 ps = new FileInputStream(pf); | |
| 380 } catch (FileNotFoundException e) { | |
| 75 | 381 logger.severe(e.toString()); |
| 71 | 382 } |
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383 } else { |
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384 // use class loader |
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385 ps = Thread.currentThread().getContextClassLoader().getResourceAsStream(path); |
| 18 | 386 } |
| 387 } | |
| 388 } | |
| 389 return ps; | |
| 390 } | |
| 391 | |
| 392 /** | |
| 393 * get a real file name for a web app file pathname. | |
| 394 * | |
| 395 * If filename starts with "/" its treated as absolute else the path is | |
| 74 | 396 * appended to the /WEB-INF/ directory in the web-app. |
| 18 | 397 * |
| 398 * @param filename | |
| 399 * @param sc | |
| 400 * @return | |
| 401 */ | |
| 402 public static String getResourcePath(ServletContext sc, String filename) { | |
| 403 File f = new File(filename); | |
| 404 // is the filename absolute? | |
| 71 | 405 if (!f.isAbsolute() && sc != null) { |
| 18 | 406 // relative path -> use getRealPath to resolve in webapp |
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407 filename = sc.getRealPath("/WEB-INF/" + filename); |
| 18 | 408 } |
| 409 return filename; | |
| 410 } | |
| 411 | |
| 412 /* | |
| 413 * (non-Javadoc) | |
| 414 * | |
| 415 * @see org.restlet.Application#stop() | |
| 416 */ | |
| 417 @Override | |
| 418 public synchronized void stop() throws Exception { | |
| 419 /* | |
| 420 * trying to clean up databases, not sure if this is the right way... | |
| 421 */ | |
| 422 if (srv != null) { | |
| 75 | 423 logger.info("Stopping DB admin server..."); |
| 18 | 424 srv.stop(); |
| 425 srv = null; | |
| 426 } | |
| 427 if (graphDb != null) { | |
| 75 | 428 logger.info("Stopping DB..."); |
| 18 | 429 graphDb.shutdown(); |
| 430 graphDb = null; | |
| 431 } | |
| 432 super.stop(); | |
| 433 } | |
| 434 | |
| 435 private static void registerShutdownHook(final GraphDatabaseService graphDb) { | |
| 436 // Registers a shutdown hook for the Neo4j instance so that it | |
| 437 // shuts down nicely when the VM exits (even if you "Ctrl-C" the | |
| 438 // running example before it's completed) | |
| 439 Runtime.getRuntime().addShutdownHook(new Thread() { | |
| 440 @Override | |
| 441 public void run() { | |
| 442 graphDb.shutdown(); | |
| 443 } | |
| 444 }); | |
| 445 } | |
| 446 | |
| 447 } |