Mercurial > dive4elements > river
comparison artifacts/src/main/java/org/dive4elements/river/artifacts/cache/CacheFactory.java @ 5838:5aa05a7a34b7
Rename modules to more fitting names.
| author | Sascha L. Teichmann <teichmann@intevation.de> |
|---|---|
| date | Thu, 25 Apr 2013 15:23:37 +0200 |
| parents | flys-artifacts/src/main/java/org/dive4elements/river/artifacts/cache/CacheFactory.java@bd047b71ab37 |
| children | 4897a58c8746 |
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| 5837:d9901a08d0a6 | 5838:5aa05a7a34b7 |
|---|---|
| 1 package org.dive4elements.river.artifacts.cache; | |
| 2 | |
| 3 import org.dive4elements.artifacts.common.utils.Config; | |
| 4 | |
| 5 import net.sf.ehcache.Cache; | |
| 6 import net.sf.ehcache.CacheException; | |
| 7 import net.sf.ehcache.CacheManager; | |
| 8 | |
| 9 import org.apache.log4j.Logger; | |
| 10 | |
| 11 public final class CacheFactory | |
| 12 { | |
| 13 private static Logger log = Logger.getLogger(CacheFactory.class); | |
| 14 | |
| 15 public static final String CACHE_CONFIG_FILE_PROPERTY = | |
| 16 "flys.artifacts.cache.config.file"; | |
| 17 | |
| 18 public static final String XPATH_CACHE_CONFIG_FILE = | |
| 19 "/artifact-database/cache/config-file/text()"; | |
| 20 | |
| 21 private CacheFactory() { | |
| 22 } | |
| 23 | |
| 24 private static boolean initialized; | |
| 25 | |
| 26 private static CacheManager cacheManager; | |
| 27 | |
| 28 public static final Cache getCache() { | |
| 29 return getCache(Cache.DEFAULT_CACHE_NAME); | |
| 30 } | |
| 31 | |
| 32 public static final String getConfigFile() { | |
| 33 String configFile = System.getProperty(CACHE_CONFIG_FILE_PROPERTY); | |
| 34 | |
| 35 if (configFile != null) { | |
| 36 return configFile; | |
| 37 } | |
| 38 | |
| 39 configFile = Config.getStringXPath(XPATH_CACHE_CONFIG_FILE); | |
| 40 | |
| 41 if (configFile != null) { | |
| 42 configFile = Config.replaceConfigDir(configFile); | |
| 43 } | |
| 44 | |
| 45 return configFile; | |
| 46 } | |
| 47 | |
| 48 public static final synchronized Cache getCache(String cacheName) { | |
| 49 if (!initialized) { | |
| 50 initialized = true; // try only once | |
| 51 String configFile = getConfigFile(); | |
| 52 if (configFile != null) { | |
| 53 try { | |
| 54 cacheManager = CacheManager.create(configFile); | |
| 55 //System.setProperty( | |
| 56 // "net.sf.ehcache.enableShutdownHook", "true"); | |
| 57 Runtime.getRuntime().addShutdownHook(new Thread() { | |
| 58 public void run() { | |
| 59 log.info("shutting down caches"); | |
| 60 for (String name: cacheManager.getCacheNames()) { | |
| 61 log.info("\tflushing '" + name + "'"); | |
| 62 cacheManager.getCache(name).flush(); | |
| 63 } | |
| 64 cacheManager.shutdown(); | |
| 65 } | |
| 66 }); | |
| 67 } | |
| 68 catch (CacheException ce) { | |
| 69 log.error("cannot configure cache", ce); | |
| 70 } | |
| 71 } | |
| 72 } | |
| 73 | |
| 74 return cacheManager != null | |
| 75 ? cacheManager.getCache(cacheName) | |
| 76 : null; | |
| 77 } | |
| 78 } | |
| 79 // vim:set ts=4 sw=4 si et sta sts=4 fenc=utf8 : |