com.mchange.util.impl.FSMessageLoggerAdapter Maven / Gradle / Ivy
/*
* Distributed as part of mchange-commons-java 0.2.9
*
* Copyright (C) 2015 Machinery For Change, Inc.
*
* Author: Steve Waldman
*
* This library is free software; you can redistribute it and/or modify
* it under the terms of EITHER:
*
* 1) The GNU Lesser General Public License (LGPL), version 2.1, as
* published by the Free Software Foundation
*
* OR
*
* 2) The Eclipse Public License (EPL), version 1.0
*
* You may choose which license to accept if you wish to redistribute
* or modify this work. You may offer derivatives of this work
* under the license you have chosen, or you may provide the same
* choice of license which you have been offered here.
*
* This software is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
*
* You should have received copies of both LGPL v2.1 and EPL v1.0
* along with this software; see the files LICENSE-EPL and LICENSE-LGPL.
* If not, the text of these licenses are currently available at
*
* LGPL v2.1: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html
* EPL v1.0: http://www.eclipse.org/org/documents/epl-v10.php
*
*/
package com.mchange.util.impl;
import java.util.Iterator;
import java.util.List;
import java.util.LinkedList;
import java.io.IOException;
import com.mchange.util.MessageLogger;
import com.mchange.util.FailSuppressedMessageLogger;
public class FSMessageLoggerAdapter implements FailSuppressedMessageLogger
{
MessageLogger inner;
List failures = null;
public FSMessageLoggerAdapter(MessageLogger wrapMe)
{this.inner = wrapMe;}
/* we presume accesses to inner are already thread-safe */
/* and do not synchronize. */
public void log(String message)
{
try {inner.log(message);}
catch (IOException e)
{addFailure(e);}
}
public void log(Throwable t, String message)
{
try {inner.log(t, message);}
catch (IOException e)
{addFailure(e);}
}
public synchronized Iterator getFailures()
{
if (inner instanceof FailSuppressedMessageLogger)
return ((FailSuppressedMessageLogger) inner).getFailures();
else return (failures != null ? failures.iterator() : null);
}
public synchronized void clearFailures()
{
if (inner instanceof FailSuppressedMessageLogger)
((FailSuppressedMessageLogger) inner).clearFailures();
else failures = null;
}
private synchronized void addFailure(IOException e)
{
if (failures == null)
failures = new LinkedList();
failures.add(e);
}
}