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/*
 * 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.lucene.util.InfoStream;
import org.elasticsearch.common.logging.ESLogger;
import org.elasticsearch.common.logging.Loggers;

/**
 * An InfoStream (for Lucene's IndexWriter) that redirects
 * messages to "lucene.iw.ifd" and "lucene.iw" Logger.trace.
 */

public final class LoggerInfoStream extends InfoStream {
    /** Used for component-specific logging: */

    /** Logger for everything */
    private final ESLogger logger;

    /** Logger for IndexFileDeleter */
    private final ESLogger ifdLogger;

    public LoggerInfoStream(ESLogger parentLogger) {
        logger = Loggers.getLogger(parentLogger, ".lucene.iw");
        ifdLogger = Loggers.getLogger(parentLogger, ".lucene.iw.ifd");
    }

    public void message(String component, String message) {
        getLogger(component).trace("{} {}: {}", Thread.currentThread().getName(), component, message);
    }

    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 ESLogger getLogger(String component) {
        if (component.equals("IFD")) {
            return ifdLogger;
        } else {
            return logger;
        }
    }

    @Override
    public void close() {
    }
}