/*

  * This software is licensed under the Apache License, Version 2.0

  * (the "License") agreement; you may not use this file except in compliance with

  * the License.  You may obtain a copy of the License at

  *

  *      http://www.apache.org/licenses/LICENSE-2.0

  *

  * Unless required by applicable law or agreed to in writing, software

  * distributed under the License is distributed on an "AS IS" BASIS,

  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.

  * See the License for the specific language governing permissions and

  * limitations under the License.

  */

 package net.admin4j.log;

 import java.util.HashSet;

 import java.util.Set;

 import net.admin4j.config.Admin4JConfiguration;

 import org.slf4j.Logger;

 import org.slf4j.LoggerFactory;

 /**

  * Provides all available LogManagers.

  *

  * @author D. Ashmore

  *

  */

 @SuppressWarnings("rawtypes")

 public class LogManagerRegistry {

         private static Logger logger = LoggerFactory.getLogger(LogManagerRegistry.class);

         private static final Set<LogManager> availableLogManagerSet = new HashSet<LogManager>();

         static {

                 try {

                         Class log4JLogManager = Class.forName("net.admin4j.log.Log4JLogManager");

                         availableLogManagerSet.add((LogManager) log4JLogManager.newInstance());

                 } catch (ClassNotFoundException e) {

                         logger.info("Log4J Not Found in classpath -- Log4J exceptions not viewable within Admin4J.");

                 } catch (Throwable e) {

                         logger.warn("Error instantiating Log4JLogManager", e);

                 }

                 try {

                         Class logbackLogManager = Class.forName("net.admin4j.log.LogbackLogManagerV1_6");

                         availableLogManagerSet.add((LogManager) logbackLogManager.newInstance());

                 } catch (ClassNotFoundException e) {

                         logger.info("Logback Not Found in classpath -- Logback exceptions not viewable within Admin4J.");

                 } catch (Throwable e) {

                         logger.warn("Error instantiating LogbackLogManagerV1_6", e);

                 }

                 availableLogManagerSet.add(new JdkLogManager());

                 for (String logManagerClassName : Admin4JConfiguration.getAdditionalLogManagerClassNames()) {

                         try {

                                 Class logManager = Class.forName(logManagerClassName);

                                 availableLogManagerSet.add((LogManager) logManager.newInstance());

                         } catch (ClassNotFoundException e) {

                                 logger.info("Additional LogManager Not Found in classpath -- these exceptions not viewable within Admin4J.");

                         } catch (Throwable e) {

                                 logger.error("Error instantiating additional LogManager", e);

                         }

                 }

         }

         public static Set<LogManager> getAvailableLogManagerSet() {

                 return availableLogManagerSet;

         }

 }