/**
* 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.hadoop.hdfs;
import java.util.ArrayList;
import java.util.List;
import org.apache.log4j.AppenderSkeleton;
import org.apache.log4j.spi.LoggingEvent;
import org.apache.log4j.spi.ThrowableInformation;
/**
* Used to verify that certain exceptions or messages are present in log output.
*/
public class LogVerificationAppender extends AppenderSkeleton {
private final List<LoggingEvent> log = new ArrayList<LoggingEvent>();
@Override
public boolean requiresLayout() {
return false;
}
@Override
protected void append(final LoggingEvent loggingEvent) {
log.add(loggingEvent);
}
@Override
public void close() {
}
public List<LoggingEvent> getLog() {
return new ArrayList<LoggingEvent>(log);
}
public int countExceptionsWithMessage(final String text) {
int count = 0;
for (LoggingEvent e: getLog()) {
ThrowableInformation t = e.getThrowableInformation();
if (t != null) {
String m = t.getThrowable().getMessage();
if (m.contains(text)) {
count++;
}
}
}
return count;
}
}