/* | |
* 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.uima.util; | |
import java.io.ByteArrayOutputStream; | |
import java.io.PrintStream; | |
import java.util.concurrent.atomic.AtomicInteger; | |
public class MessageReport { | |
/** | |
* Issues message at warning or fine level (fine if enabled, includes stack trace) | |
* @param errorCount the count of errors used to decrease the frequency | |
* @param message the message | |
* @param logger the logger to use | |
*/ | |
public static void decreasingWithTrace(AtomicInteger errorCount, String message, Logger logger) { | |
if (logger != null) { | |
final int c = errorCount.incrementAndGet(); | |
final int cTruncated = Integer.highestOneBit(c); | |
// log with decreasing frequency | |
if (cTruncated == c) { | |
if (logger.isLoggable(Level.FINE)) { | |
try { throw new Throwable();} | |
catch (Throwable e) { | |
ByteArrayOutputStream baos = new ByteArrayOutputStream(); | |
PrintStream ps = new PrintStream(baos); | |
e.printStackTrace(ps); | |
message = "Message count: " + c + "; " + message + " Message count indicates messages skipped to avoid potential flooding.\n" + baos.toString(); | |
logger.log(Level.FINE, message); | |
} | |
} else { | |
message = "Message count: " + c + "; " + message + " Message count indicates messages skipped to avoid potential flooding. Set FINE logging level for stacktrace."; | |
logger.log(Level.WARNING, message); | |
} | |
} | |
} | |
} | |
} |