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.spi.ExtendedLogger; 028 029/** 030 * Logs each line read to a pre-defined level. Can also be configured with a Marker. 031 * 032 * @since 2.1 033 */ 034public class LoggerInputStream extends FilterInputStream { 035 private static final String FQCN = LoggerInputStream.class.getName(); 036 037 private final String fqcn; 038 private final ByteStreamLogger 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 ByteStreamLogger(logger, level, marker, charset); 044 this.fqcn = fqcn == null ? FQCN : fqcn; 045 } 046 047 @Override 048 public void close() throws IOException { 049 this.logger.close(this.fqcn); 050 super.close(); 051 } 052 053 @Override 054 public int read() throws IOException { 055 final int b = super.read(); 056 this.logger.put(this.fqcn, b); 057 return b; 058 } 059 060 @Override 061 public int read(final byte[] b) throws IOException { 062 return read(b, 0, b.length); 063 } 064 065 @Override 066 public int read(final byte[] b, final int off, final int len) throws IOException { 067 final int bytesRead = super.read(b, off, len); 068 this.logger.put(this.fqcn, b, off, bytesRead); 069 return bytesRead; 070 } 071 072 @Override 073 public String toString() { 074 return LoggerInputStream.class.getSimpleName() + "{stream=" + this.in + '}'; 075 } 076}