@SuppressWarnings("unchecked") public static <P extends Plugin, VPP extends P> List<P> createPluginsOfType( BRJS brjs, Class<P> pluginInterface, Class<VPP> virtualProxyClass) { ClassLoader classLoader = Plugin.class.getClassLoader(); try { pluginInterface = (Class<P>) classLoader.loadClass(pluginInterface.getCanonicalName()); } catch (Exception ex) { throw new RuntimeException(ex); } Logger logger = brjs.logger(BRJSPluginLocator.class); List<P> objectList = new ArrayList<P>(); try { ServiceLoader<P> loader = ServiceLoader.load(pluginInterface, classLoader); Iterator<P> objectIterator = loader.iterator(); while (objectIterator.hasNext()) { P object = objectIterator.next(); if (virtualProxyClass != null) { object = virtualProxyClass.getConstructor(pluginInterface).newInstance(object); } objectList.add(object); } } catch (ServiceConfigurationError serviceError) { Throwable cause = serviceError.getCause(); if (cause != null && cause.getClass() == InstantiationException.class) { if (logger != null) { logger.error(Messages.CANNOT_CREATE_INSTANCE_LOG_MSG, cause.getMessage()); } else { System.err.println( String.format(Messages.CANNOT_CREATE_INSTANCE_LOG_MSG, cause.getMessage())); } } else { if (logger != null) { logger.error(Messages.ERROR_CREATING_OBJECT_LOG_MSG, serviceError); } else { System.err.println(String.format(Messages.ERROR_CREATING_OBJECT_LOG_MSG, serviceError)); } } } catch (NullPointerException | NoSuchMethodException | InstantiationException | IllegalAccessException | IllegalArgumentException | InvocationTargetException | SecurityException e) { throw new RuntimeException(e); } // use this utility to set BRJS so we catch any runtime errors thrown by model observers PluginLocatorUtils.setBRJSForPlugins(brjs, objectList); return objectList; }
@Override public void setBRJS(BRJS brjs) { this.brjs = brjs; logger = brjs.logger(LoggerType.APP_SERVER, this.getClass()); }