Mercurial > dive4elements > river

annotate artifacts/src/main/java/org/dive4elements/river/artifacts/cache/CacheFactory.java @ 5838:5aa05a7a34b7

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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
rev   line source
5831
bd047b71ab37 Repaired internal references
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1 package org.dive4elements.river.artifacts.cache;
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2
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3 import org.dive4elements.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 CACHE_CONFIG_FILE_PROPERTY =
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16 "flys.artifacts.cache.config.file";
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17
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18 public static final String XPATH_CACHE_CONFIG_FILE =
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19 "/artifact-database/cache/config-file/text()";
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20
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21 private CacheFactory() {
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22 }
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23
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24 private static boolean initialized;
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25
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26 private static CacheManager cacheManager;
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27
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28 public static final Cache getCache() {
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29 return getCache(Cache.DEFAULT_CACHE_NAME);
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30 }
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31
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32 public static final String getConfigFile() {
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33 String configFile = System.getProperty(CACHE_CONFIG_FILE_PROPERTY);
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34
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35 if (configFile != null) {
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36 return configFile;
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37 }
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38
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39 configFile = Config.getStringXPath(XPATH_CACHE_CONFIG_FILE);
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40
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41 if (configFile != null) {
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42 configFile = Config.replaceConfigDir(configFile);
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43 }
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44
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45 return configFile;
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46 }
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47
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48 public static final synchronized Cache getCache(String cacheName) {
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49 if (!initialized) {
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50 initialized = true; // try only once
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51 String configFile = getConfigFile();
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52 if (configFile != null) {
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53 try {
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54 cacheManager = CacheManager.create(configFile);
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55 //System.setProperty(
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56 // "net.sf.ehcache.enableShutdownHook", "true");
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57 Runtime.getRuntime().addShutdownHook(new Thread() {
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58 public void run() {
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59 log.info("shutting down caches");
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60 for (String name: cacheManager.getCacheNames()) {
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61 log.info("\tflushing '" + name + "'");
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62 cacheManager.getCache(name).flush();
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63 }
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64 cacheManager.shutdown();
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65 }
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66 });
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67 }
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68 catch (CacheException ce) {
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69 log.error("cannot configure cache", ce);
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70 }
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71 }
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72 }
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73
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74 return cacheManager != null
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75 ? cacheManager.getCache(cacheName)
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76 : null;
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77 }
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78 }
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79 // vim:set ts=4 sw=4 si et sta sts=4 fenc=utf8 :
http://dive4elements.wald.intevation.org