| /* |
| * 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.openjpa.lib.log; |
| |
| import java.util.ArrayList; |
| import java.util.Arrays; |
| import java.util.List; |
| import java.util.concurrent.CopyOnWriteArrayList; |
| |
| /** |
| * A LogFactory implementation to pass events through multiple |
| * LogFactory implementations(such as log4j and LogPanelFactory). |
| * |
| * @author Steve Kim |
| */ |
| public class MultiLogFactory implements LogFactory { |
| |
| private List<LogFactory> _delegates; |
| |
| /** |
| * Create an instance with the given delegates. |
| */ |
| public MultiLogFactory(LogFactory d1, LogFactory d2) { |
| this(new LogFactory[]{ d1, d2 }); |
| } |
| |
| /** |
| * Create an instance with the given delegates. |
| */ |
| public MultiLogFactory(LogFactory d1, LogFactory d2, LogFactory d3) { |
| this(new LogFactory[]{ d1, d2, d3 }); |
| } |
| |
| /** |
| * Create an instance with the given delegates. |
| */ |
| public MultiLogFactory(LogFactory[] delegates) { |
| _delegates = |
| new CopyOnWriteArrayList<>(Arrays.asList(delegates)); |
| } |
| |
| public void addLogFactory(LogFactory factory) { |
| _delegates.add(factory); |
| } |
| |
| public void removeLogFactory(LogFactory factory) { |
| _delegates.remove(factory); |
| } |
| |
| /** |
| * Returns the delegates that this MultiLogFactory delegates messages to. |
| */ |
| public LogFactory[] getDelegates() { |
| return (LogFactory[]) _delegates.toArray(new LogFactory[_delegates.size()]); |
| } |
| |
| /** |
| * Returns a Log impl that combines all logs. |
| */ |
| @Override |
| public synchronized Log getLog(String channel) { |
| List<Log> logs = new ArrayList<>(_delegates.size()); |
| for(LogFactory f : _delegates) { |
| if (f != null) { |
| Log l = f.getLog(channel); |
| if (l != null) |
| logs.add(l); |
| } |
| } |
| return new MultiLog(logs.toArray(new Log[logs.size()])); |
| } |
| |
| /** |
| * Combinatory Log impl. |
| */ |
| private static class MultiLog implements Log { |
| |
| private Log[] _logs; |
| |
| public MultiLog(Log[] logs) { |
| _logs = logs; |
| } |
| |
| /** |
| * Return the logs that this log delegates to. |
| */ |
| public Log[] getDelegates() { |
| return _logs; |
| } |
| |
| @Override |
| public void trace(Object msg) { |
| for (Log log : _logs) { |
| log.trace(msg); |
| } |
| } |
| |
| @Override |
| public void trace(Object msg, Throwable t) { |
| for (Log log : _logs) { |
| log.trace(msg, t); |
| } |
| } |
| |
| @Override |
| public void info(Object msg) { |
| for (Log log : _logs) { |
| log.info(msg); |
| } |
| } |
| |
| @Override |
| public void info(Object msg, Throwable t) { |
| for (Log log : _logs) { |
| log.info(msg, t); |
| } |
| } |
| |
| @Override |
| public void warn(Object msg) { |
| for (Log log : _logs) { |
| log.warn(msg); |
| } |
| } |
| |
| @Override |
| public void warn(Object msg, Throwable t) { |
| for (Log log : _logs) { |
| log.warn(msg, t); |
| } |
| } |
| |
| @Override |
| public void error(Object msg) { |
| for (Log log : _logs) { |
| log.error(msg); |
| } |
| } |
| |
| @Override |
| public void error(Object msg, Throwable t) { |
| for (Log log : _logs) { |
| log.error(msg, t); |
| } |
| } |
| |
| @Override |
| public void fatal(Object msg) { |
| for (Log log : _logs) { |
| log.fatal(msg); |
| } |
| } |
| |
| @Override |
| public void fatal(Object msg, Throwable t) { |
| for (Log log : _logs) { |
| log.fatal(msg, t); |
| } |
| } |
| |
| @Override |
| public boolean isTraceEnabled() { |
| for (Log log : _logs) |
| if (log.isTraceEnabled()) |
| return true; |
| return false; |
| } |
| |
| @Override |
| public boolean isInfoEnabled() { |
| for (Log log : _logs) |
| if (log.isInfoEnabled()) |
| return true; |
| return false; |
| } |
| |
| @Override |
| public boolean isWarnEnabled() { |
| for (Log log : _logs) |
| if (log.isWarnEnabled()) |
| return true; |
| return false; |
| } |
| |
| @Override |
| public boolean isErrorEnabled() { |
| for (Log log : _logs) |
| if (log.isErrorEnabled()) |
| return true; |
| return false; |
| } |
| |
| @Override |
| public boolean isFatalEnabled() { |
| for (Log log : _logs) |
| if (log.isFatalEnabled()) |
| return true; |
| return false; |
| } |
| } |
| } |