org.apache.hadoop.hive.ql.log.SlidingFilenameRolloverStrategy Maven / Gradle / Ivy
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* 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,
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* See the License for the specific language governing permissions and
* limitations under the License.
*/
package org.apache.hadoop.hive.ql.log;
import java.io.IOException;
import org.apache.logging.log4j.core.appender.rolling.DirectFileRolloverStrategy;
import org.apache.logging.log4j.core.appender.rolling.RollingFileManager;
import org.apache.logging.log4j.core.appender.rolling.RolloverDescription;
import org.apache.logging.log4j.core.appender.rolling.RolloverDescriptionImpl;
import org.apache.logging.log4j.core.appender.rolling.RolloverStrategy;
import org.apache.logging.log4j.core.appender.rolling.action.AbstractAction;
import org.apache.logging.log4j.core.appender.rolling.action.Action;
import org.apache.logging.log4j.core.config.Configuration;
import org.apache.logging.log4j.core.config.plugins.Plugin;
import org.apache.logging.log4j.core.config.plugins.PluginConfiguration;
import org.apache.logging.log4j.core.config.plugins.PluginFactory;
/**
* A RolloverStrategy that does not rename files and
* uses file names that are based on a millisecond timestamp.
*/
@Plugin(name = "SlidingFilenameRolloverStrategy",
category = "Core",
printObject = true)
public class SlidingFilenameRolloverStrategy
implements RolloverStrategy, DirectFileRolloverStrategy {
@PluginFactory
public static SlidingFilenameRolloverStrategy createStrategy(
@PluginConfiguration Configuration config) {
return new SlidingFilenameRolloverStrategy();
}
/**
* Do rollover with no renaming.
*/
@Override
public RolloverDescription rollover(RollingFileManager manager)
throws SecurityException {
Action shiftToNextActiveFile = new AbstractAction() {
@Override
public boolean execute() throws IOException {
return true;
}
};
return new RolloverDescriptionImpl("ignored", false, shiftToNextActiveFile,
null);
}
/**
* Get the new log file name.
*/
@Override
public String getCurrentFileName(RollingFileManager rollingFileManager) {
String pattern = rollingFileManager.getPatternProcessor().getPattern();
return getLogFileName(pattern);
}
@Override public void clearCurrentFileName() {
// no rename is needed
}
/**
* @return Mangled file name formed by appending the current timestamp
*/
private static String getLogFileName(String oldFileName) {
return oldFileName + "." + Long.toString(System.currentTimeMillis());
}
}