/*
* Copyright (c) 2009-2010 Oracle and/or its affiliates. All rights reserved.
* Copyright (c) 2009-2010 Jason Mehrens. All Rights Reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
*
* - Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
*
* - Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* - Neither the name of Oracle nor the names of its
* contributors may be used to endorse or promote products derived
* from this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS
* IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
* THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR
* CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
* EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
* PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
* PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
* LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
* NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
* SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
import java.util.logging.*;
import java.text.DateFormat;
import java.util.Date;
/**
* A compact formatter used to summarize an error report.
* @author Jason Mehrens
*/
public class SummaryFormatter extends Formatter {
private long oldest;
private long newest;
private long count;
public SummaryFormatter() {
reset();
}
public String format(LogRecord record) {
final String data;
if (record.getThrown() != null) {
data = record.getLevel() + " with detail." + newLine();
} else {
data = record.getLevel() + " with no detail." + newLine();
}
track(record.getMillis());
return data;
}
public synchronized String getTail(Handler h) {
try {
if (count > 0L) {
return formatNow();
}
return "";
} finally {
reset();
}
}
public synchronized String toString() {
return formatNow();
}
private String formatNow() {
assert Thread.holdsLock(this);
DateFormat f = DateFormat.getDateTimeInstance();
return newLine() + "These " + count + " messages occured between " +
f.format(new Date(oldest)) + " and " +
f.format(new Date(newest));
}
private synchronized void track(long time) {
count++;
this.oldest = Math.min(this.oldest, time);
this.newest = Math.max(this.newest, time);
}
private synchronized void reset() {
this.count = 0L;
this.oldest = Long.MAX_VALUE;
this.newest = Long.MIN_VALUE;
}
private static String newLine() {
return "\n";
}
}