Mercurial > dive4elements > river
annotate flys-artifacts/src/main/java/de/intevation/flys/artifacts/cache/CacheFactory.java @ 382:e07d1c3f7667
Flush/persist cache at end of program.
flys-artifacts/trunk@1798 c6561f87-3c4e-4783-a992-168aeb5c3f6f
author | Sascha L. Teichmann <sascha.teichmann@intevation.de> |
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date | Mon, 02 May 2011 16:50:58 +0000 |
parents | 7f7d6037d242 |
children | 0c8aca463bd4 |
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1 package de.intevation.flys.artifacts.cache; |
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2 |
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3 import de.intevation.artifacts.common.utils.Config; |
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4 |
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5 import net.sf.ehcache.Cache; |
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6 import net.sf.ehcache.CacheException; |
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7 import net.sf.ehcache.CacheManager; |
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8 |
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9 import org.apache.log4j.Logger; |
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10 |
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11 public final class CacheFactory |
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12 { |
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13 private static Logger log = Logger.getLogger(CacheFactory.class); |
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14 |
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15 public static final String XPATH_CACHE_CONFIG_FILE = |
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16 "/artifact-database/cache/config-file/text()"; |
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17 |
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18 private CacheFactory() { |
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19 } |
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20 |
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21 private static boolean initialized; |
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22 |
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23 private static CacheManager cacheManager; |
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24 |
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25 public static final Cache getCache() { |
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26 return getCache(Cache.DEFAULT_CACHE_NAME); |
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27 } |
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28 |
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29 public static final synchronized Cache getCache(String cacheName) { |
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30 if (!initialized) { |
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31 initialized = true; // try only once |
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32 String configFile = Config.getStringXPath(XPATH_CACHE_CONFIG_FILE); |
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33 if (configFile != null) { |
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34 configFile = Config.replaceConfigDir(configFile); |
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35 try { |
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36 cacheManager = CacheManager.create(configFile); |
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37 //System.setProperty( |
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38 // "net.sf.ehcache.enableShutdownHook", "true"); |
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39 Runtime.getRuntime().addShutdownHook(new Thread() { |
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40 public void run() { |
382
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41 log.info("shutting down caches"); |
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42 for (String name: cacheManager.getCacheNames()) { |
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43 log.info("\tflushing '" + name + "'"); |
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44 cacheManager.getCache(name).flush(); |
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45 } |
373
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46 cacheManager.shutdown(); |
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47 } |
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48 }); |
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49 } |
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50 catch (CacheException ce) { |
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51 log.error("cannot configure cache", ce); |
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52 } |
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53 } |
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54 } |
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55 |
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56 return cacheManager != null |
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57 ? cacheManager.getCache(cacheName) |
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58 : null; |
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59 } |
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60 } |
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61 // vim:set ts=4 sw=4 si et sta sts=4 fenc=utf8 : |