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// Copyright (C) 2012 The Android Open Source Project
//
// Licensed 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 com.google.gerrit.pgm.util;
import com.google.gerrit.extensions.events.LifecycleListener;
import com.google.gerrit.server.config.SitePaths;
import com.google.gerrit.server.git.GarbageCollection;
import org.apache.log4j.Appender;
import org.apache.log4j.DailyRollingFileAppender;
import org.apache.log4j.Level;
import org.apache.log4j.LogManager;
import org.apache.log4j.Logger;
import org.apache.log4j.PatternLayout;
import org.apache.log4j.helpers.OnlyOnceErrorHandler;
import org.apache.log4j.spi.ErrorHandler;
import org.apache.log4j.spi.LoggingEvent;
import org.slf4j.LoggerFactory;
import java.io.File;
import java.io.FileNotFoundException;
import java.io.IOException;
public class GarbageCollectionLogFile {
private static final org.slf4j.Logger log = LoggerFactory.getLogger(GarbageCollectionLogFile.class);
public static LifecycleListener start(File sitePath)
throws FileNotFoundException {
File logdir = new SitePaths(sitePath).logs_dir;
if (!logdir.exists() && !logdir.mkdirs()) {
throw new Die("Cannot create log directory: " + logdir);
}
PatternLayout layout = new PatternLayout();
layout.setConversionPattern("[%d] %-5p %x: %m%n");
DailyRollingFileAppender dst = new DailyRollingFileAppender();
dst.setName(GarbageCollection.LOG_NAME);
dst.setLayout(layout);
dst.setEncoding("UTF-8");
dst.setFile(new File(resolve(logdir), GarbageCollection.LOG_NAME).getPath());
dst.setImmediateFlush(true);
dst.setAppend(true);
dst.setThreshold(Level.INFO);
dst.setErrorHandler(new LogErrorHandler());
dst.activateOptions();
dst.setErrorHandler(new OnlyOnceErrorHandler());
Logger gcLogger = LogManager.getLogger(GarbageCollection.LOG_NAME);
gcLogger.removeAllAppenders();
gcLogger.addAppender(dst);
gcLogger.setAdditivity(false);
return new LifecycleListener() {
@Override
public void start() {
}
@Override
public void stop() {
LogManager.getLogger(GarbageCollection.LOG_NAME).removeAllAppenders();
}
};
}
private static File resolve(File logs_dir) {
try {
return logs_dir.getCanonicalFile();
} catch (IOException e) {
return logs_dir.getAbsoluteFile();
}
}
private GarbageCollectionLogFile() {
}
private static final class LogErrorHandler implements ErrorHandler {
@Override
public void error(String message, Exception e, int errorCode,
LoggingEvent event) {
error(e != null ? e.getMessage() : message);
}
@Override
public void error(String message, Exception e, int errorCode) {
error(e != null ? e.getMessage() : message);
}
@Override
public void error(String message) {
log.error("Cannot open '" + GarbageCollection.LOG_NAME + "' log file: "
+ message);
}
@Override
public void activateOptions() {
}
@Override
public void setAppender(Appender appender) {
}
@Override
public void setBackupAppender(Appender appender) {
}
@Override
public void setLogger(Logger logger) {
}
}
}
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