[gatein-commits] gatein SVN: r5673 - in exo/portal/branches/3.1.x/component/resources/src: test/java/org/exoplatform/services/resources/test and 1 other directory.

Author: trong.tran Date: 2011-01-04 02:41:46 -0500 (Tue, 04 Jan 2011) New Revision: 5673 Modified: exo/portal/branches/3.1.x/component/resources/src/main/java/org/exoplatform/services/resources/impl/BaseResourceBundleService.java exo/portal/branches/3.1.x/component/resources/src/test/java/org/exoplatform/services/resources/test/TestResourceBundleService.java Log: EXOGTN-222 Prevent to load concurrently several time the same ResourceBundle Modified: exo/portal/branches/3.1.x/component/resources/src/main/java/org/exoplatform/services/resources/impl/BaseResourceBundleService.java =================================================================== --- exo/portal/branches/3.1.x/component/resources/src/main/java/org/exoplatform/services/resources/impl/BaseResourceBundleService.java 2011-01-04 03:28:41 UTC (rev 5672) +++ exo/portal/branches/3.1.x/component/resources/src/main/java/org/exoplatform/services/resources/impl/BaseResourceBundleService.java 2011-01-04 07:41:46 UTC (rev 5673) @@ -19,6 +19,9 @@ package org.exoplatform.services.resources.impl; +import org.exoplatform.commons.cache.future.FutureCache; +import org.exoplatform.commons.cache.future.FutureExoCache; +import org.exoplatform.commons.cache.future.Loader; import org.exoplatform.commons.utils.IOUtil; import org.exoplatform.commons.utils.MapResourceBundle; import org.exoplatform.commons.utils.PageList; @@ -64,6 +67,19 @@ protected ExoCache<String, ResourceBundle> cache_; + private volatile FutureCache<String, ResourceBundle, ResourceBundleContext> futureCache_; + + private final Loader<String, ResourceBundle, ResourceBundleContext> loader_ = new Loader<String, ResourceBundle, ResourceBundleContext>() + { + /** + * {@inheritDoc} + */ + public ResourceBundle retrieve(ResourceBundleContext context, String key) throws Exception + { + return context.get(key); + } + }; + private volatile List<String> initResources_; @SuppressWarnings("unchecked") @@ -300,7 +316,7 @@ candidateFiles.add(baseName + "_" + language + "_" + country + ".properties"); } - if (language != null && language.length() > 0 ) + if (language != null && language.length() > 0) { candidateFiles.add(baseName + "_" + language + ".properties"); } @@ -395,56 +411,35 @@ boolean isClasspathResource = isClasspathResource(name); boolean isCacheable = !isClasspathResource || !PropertyManager.isDevelopping(); - if (isCacheable) + if (isCacheable && isClasspathResource) { - if (isClasspathResource) - { - // Avoid naming collision - id += "_" + cl.getClass() + "_" + cl.hashCode(); - } - try - { - ResourceBundle rb = cache_.get(id); - if (rb != null) - { - return rb; - } - } - catch (Exception ex) - { - } + // Avoid naming collision + id += "_" + cl.getClass() + "_" + System.identityHashCode(cl); } // Case 1: ResourceBundle of portlets, standard java API is used if (isClasspathResource) { - ResourceBundle res = ResourceBundleLoader.load(name, locale, cl); - //Cache classpath resource bundle while running portal in non-dev mode + // Cache classpath resource bundle while running portal in non-dev mode if (isCacheable) - cache_.put(id, res); - return res; + { + ResourceBundleLoaderContext ctx = new ResourceBundleLoaderContext(name, locale, cl); + ResourceBundle result = getFutureCache().get(ctx, id); + if (ctx.e != null) + { + // Throw the RuntimeException if it occurs to remain compatible with the old behavior + throw ctx.e; + } + return result; + } + else + { + return ResourceBundleLoader.load(name, locale, cl); + } } // Case 2: ResourceBundle of portal - try - { - ResourceBundle res = null; - String rootId = name + "_" + localeService_.getDefaultLocaleConfig().getLanguage(); - ResourceBundle parent = getResourceBundleFromDb(rootId, null, locale); - if (parent != null) - { - res = getResourceBundleFromDb(id, parent, locale); - if (res == null) - res = parent; - cache_.put(id, res); - return res; - } - } - catch (Exception ex) - { - log_.error("Error: " + id, ex); - } - return null; + return getFutureCache().get(new GetResourceBundleFromDbContext(name, locale), id); } public ResourceBundle getResourceBundle(String[] name, Locale locale, ClassLoader cl) @@ -458,34 +453,165 @@ idBuf.append(n).append("_"); idBuf.append(locale); String id = idBuf.toString(); - try + return getFutureCache().get(new GetResourceBundleContext(name, locale, cl), id); + } + + protected FutureCache<String, ResourceBundle, ResourceBundleContext> getFutureCache() + { + if (futureCache_ == null) { - ResourceBundle res = cache_.get(id); - if (res != null) - return res; - MapResourceBundle outputBundled = new MapResourceBundle(locale); - for (int i = 0; i < name.length; i++) + synchronized(this) { - ResourceBundle temp = getResourceBundle(name[i], locale, cl); - if (temp != null) + if (futureCache_ == null) { - outputBundled.merge(temp); - continue; + futureCache_ = new FutureExoCache<String, ResourceBundle, ResourceBundleContext>(loader_, cache_); } - log_.warn("Cannot load and merge the bundle: " + name[i]); } - outputBundled.resolveDependencies(); - cache_.put(id, outputBundled); - return outputBundled; } - catch (Exception ex) + return futureCache_; + } + + abstract protected ResourceBundle getResourceBundleFromDb(String id, ResourceBundle parent, Locale locale) + throws Exception; + + /** + * Generic class defining a context needed to get a ResourceBundle + */ + private static abstract class ResourceBundleContext + { + /** + * Get the resource bundle corresponding to the context + */ + abstract ResourceBundle get(String id); + } + + /** + * The class defining the context required to load a ResourceBundle thanks to the method + * <code>ResourceBundleLoader.load(String name, Locale locale, ClassLoader cl)</code> + */ + private static class ResourceBundleLoaderContext extends ResourceBundleContext + { + private final String name; + + private final Locale locale; + + private final ClassLoader cl; + + private RuntimeException e; + + public ResourceBundleLoaderContext(String name, Locale locale, ClassLoader cl) { - log_.error("Cannot load and merge the bundle: " + id, ex); + this.name = name; + this.locale = locale; + this.cl = cl; } - return null; + + /** + * {@inheritDoc} + */ + @Override + ResourceBundle get(String id) + { + try + { + return ResourceBundleLoader.load(name, locale, cl); + } + catch (RuntimeException e) + { + this.e = e; + } + return null; + } } - abstract protected ResourceBundle getResourceBundleFromDb(String id, ResourceBundle parent, Locale locale) - throws Exception; + /** + * The class defining the context required to load a ResourceBundle thanks to the method + * <code>getResourceBundleFromDb(String id, ResourceBundle parent, Locale locale)</code> + */ + private class GetResourceBundleFromDbContext extends ResourceBundleContext + { + private final String name; -} + private final Locale locale; + + public GetResourceBundleFromDbContext(String name, Locale locale) + { + this.name = name; + this.locale = locale; + } + + /** + * {@inheritDoc} + */ + @Override + ResourceBundle get(String id) + { + ResourceBundle res = null; + try + { + String rootId = name + "_" + localeService_.getDefaultLocaleConfig().getLanguage(); + ResourceBundle parent = getResourceBundleFromDb(rootId, null, locale); + if (parent != null) + { + res = getResourceBundleFromDb(id, parent, locale); + if (res == null) + res = parent; + } + } + catch (Exception ex) + { + log_.error("Error: " + id, ex); + } + return res; + } + } + + /** + * The class defining the context required to load a ResourceBundle thanks to the method + * <code>getResourceBundle(String[] name, Locale locale, ClassLoader cl)</code> + */ + private class GetResourceBundleContext extends ResourceBundleContext + { + private final String[] name; + + private final Locale locale; + + private final ClassLoader cl; + + public GetResourceBundleContext(String[] name, Locale locale, ClassLoader cl) + { + this.name = name; + this.locale = locale; + this.cl = cl; + } + + /** + * {@inheritDoc} + */ + @Override + ResourceBundle get(String id) + { + MapResourceBundle outputBundled = null; + try + { + outputBundled = new MapResourceBundle(locale); + for (int i = 0; i < name.length; i++) + { + ResourceBundle temp = getResourceBundle(name[i], locale, cl); + if (temp != null) + { + outputBundled.merge(temp); + continue; + } + log_.warn("Cannot load and merge the bundle: " + name[i]); + } + outputBundled.resolveDependencies(); + } + catch (Exception ex) + { + log_.error("Cannot load and merge the bundle: " + id, ex); + } + return outputBundled; + } + } +} \ No newline at end of file Modified: exo/portal/branches/3.1.x/component/resources/src/test/java/org/exoplatform/services/resources/test/TestResourceBundleService.java =================================================================== --- exo/portal/branches/3.1.x/component/resources/src/test/java/org/exoplatform/services/resources/test/TestResourceBundleService.java 2011-01-04 03:28:41 UTC (rev 5672) +++ exo/portal/branches/3.1.x/component/resources/src/test/java/org/exoplatform/services/resources/test/TestResourceBundleService.java 2011-01-04 07:41:46 UTC (rev 5673) @@ -211,5 +211,11 @@ { return "MyClassLoader"; } + + @Override + public int hashCode() + { + return 0; + } } }