/*
* Licensed to Elasticsearch under one or more contributor
* license agreements. See the NOTICE file distributed with
* this work for additional information regarding copyright
* ownership. Elasticsearch 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.elasticsearch.common.lucene;
import org.apache.logging.log4j.Logger;
import org.apache.lucene.util.InfoStream;
import org.elasticsearch.common.logging.Loggers;
import java.util.Map;
import java.util.concurrent.ConcurrentHashMap;
/** An InfoStream (for Lucene's IndexWriter) that redirects
* messages to "lucene.iw.ifd" and "lucene.iw" Logger.trace. */
public final class LoggerInfoStream extends InfoStream {
private final Logger parentLogger;
private final Map<String, Logger> loggers = new ConcurrentHashMap<>();
public LoggerInfoStream(final Logger parentLogger) {
this.parentLogger = parentLogger;
}
@Override
public void message(String component, String message) {
getLogger(component).trace("{} {}: {}", Thread.currentThread().getName(), component, message);
}
@Override
public boolean isEnabled(String component) {
// TP is a special "test point" component; we don't want
// to log it:
return getLogger(component).isTraceEnabled() && component.equals("TP") == false;
}
private Logger getLogger(String component) {
return loggers.computeIfAbsent(component, c -> Loggers.getLogger(parentLogger, "." + c));
}
@Override
public void close() {
}
}