001/*
002 * Licensed to the Apache Software Foundation (ASF) under one or more
003 * contributor license agreements.  See the NOTICE file distributed with
004 * this work for additional information regarding copyright ownership.
005 * The ASF licenses this file to You under the Apache License, Version 2.0
006 * (the "License"); you may not use this file except in compliance with
007 * the License.  You may obtain a copy of the License at
008 *
009 *     http://www.apache.org/licenses/LICENSE-2.0
010 *
011 * Unless required by applicable law or agreed to in writing, software
012 * distributed under the License is distributed on an "AS IS" BASIS,
013 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
014 * See the License for the specific language governing permissions and
015 * limitations under the License.
016 */
017
018package org.apache.logging.log4j.io;
019
020import java.io.FilterInputStream;
021import java.io.IOException;
022import java.io.InputStream;
023import java.nio.charset.Charset;
024
025import org.apache.logging.log4j.Level;
026import org.apache.logging.log4j.Marker;
027import org.apache.logging.log4j.io.internal.InternalInputStream;
028import org.apache.logging.log4j.spi.ExtendedLogger;
029
030/**
031 * Logs each line read to a pre-defined level. Can also be configured with a Marker.
032 *
033 * @since 2.1
034 */
035public class LoggerInputStream extends FilterInputStream {
036    private static final String FQCN = LoggerInputStream.class.getName();
037
038    private final InternalInputStream logger;
039
040    protected LoggerInputStream(final InputStream in, final Charset charset, final ExtendedLogger logger,
041                                final String fqcn, final Level level, final Marker marker) {
042        super(in);
043        this.logger = new InternalInputStream(in, charset, logger, fqcn == null ? FQCN : fqcn, level, marker);
044    }
045
046    @Override
047    public void close() throws IOException {
048        this.logger.close();
049    }
050
051    @Override
052    public int read() throws IOException {
053        return logger.read();
054    }
055
056    @Override
057    public int read(final byte[] b) throws IOException {
058        return logger.read(b);
059    }
060
061    @Override
062    public int read(final byte[] b, final int off, final int len) throws IOException {
063        return logger.read(b, off, len);
064    }
065
066    @Override
067    public String toString() {
068        return LoggerInputStream.class.getSimpleName() + logger.toString();
069    }
070}