Mercurial > dive4elements > river
annotate flys-artifacts/src/main/java/de/intevation/flys/artifacts/cache/CacheFactory.java @ 4305:8c51c43e59ca
Rename gauge_discharge_curve_at_export facet to at
Rename gauge_discharge_curve_at_export facet to at to get an export with a
filename ending .at. This feels horribly wrong...
author | Björn Ricks <bjoern.ricks@intevation.de> |
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date | Mon, 29 Oct 2012 15:24:32 +0100 |
parents | 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 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 |
373
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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 : |