/*
* Licensed to the Apache Software Foundation (ASF) under one or more
* contributor license agreements. See the NOTICE file distributed with
* this work for additional information regarding copyright ownership.
* The ASF 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.apache.logging.log4j.core.appender;
import org.apache.logging.log4j.Logger;
import org.apache.logging.log4j.core.Core;
import org.apache.logging.log4j.core.config.AppenderRef;
import org.apache.logging.log4j.core.config.plugins.Plugin;
import org.apache.logging.log4j.core.config.plugins.PluginElement;
import org.apache.logging.log4j.core.config.plugins.PluginFactory;
import org.apache.logging.log4j.status.StatusLogger;
/**
* The array of failover Appenders.
*/
@Plugin(name = "failovers", category = Core.CATEGORY_NAME)
public final class FailoversPlugin {
private static final Logger LOGGER = StatusLogger.getLogger();
/**
* Prevent instantiation.
*/
private FailoversPlugin() {
}
/**
* Returns the appender references.
* @param refs The references to return.
* @return The appender references.
*/
@PluginFactory
public static String[] createFailovers(@PluginElement("AppenderRef") final AppenderRef... refs) {
if (refs == null) {
LOGGER.error("failovers must contain an appender reference");
return null;
}
final String[] arr = new String[refs.length];
for (int i = 0; i < refs.length; ++i) {
arr[i] = refs[i].getRef();
}
return arr;
}
}