/**
* Licensed to jclouds, Inc. (jclouds) under one or more
* contributor license agreements. See the NOTICE file
* distributed with this work for additional information
* regarding copyright ownership. jclouds licenses this file
* to you under the Apache License, Version 2.0 (the
* "License"); 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 org.jclouds.logging;
import static com.google.common.collect.Iterables.find;
import java.util.NoSuchElementException;
import java.util.ServiceLoader;
import org.jclouds.logging.config.LoggingModule;
import org.jclouds.logging.jdk.config.JDKLoggingModule;
import com.google.common.base.Predicates;
/**
* The LoggingModules class provides static methods for accessing
* loggingModules.
*
* @author Adrian Cole
*/
public class LoggingModules {
/**
* Returns the {@link LoggingModule}s located on the classpath via
* {@link java.util.ServiceLoader}.
*
*/
private static Iterable<LoggingModule> fromServiceLoader() {
return ServiceLoader.load(LoggingModule.class);
}
/**
* all available {@link LoggingModule}s
*/
public static Iterable<LoggingModule> all() {
return fromServiceLoader();
}
/**
* the first available {@link LoggingModule}s from
* {@link java.util.ServiceLoader} or {@link JDKLoggingModule}
*/
public static LoggingModule firstOrJDKLoggingModule() {
try {
return find(ServiceLoader.load(LoggingModule.class),
Predicates.not(Predicates.instanceOf(JDKLoggingModule.class)));
} catch (NoSuchElementException e) {
return new JDKLoggingModule();
}
}
}