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.IOException; 021import java.io.OutputStream; 022import java.nio.charset.Charset; 023 024import org.apache.logging.log4j.Level; 025import org.apache.logging.log4j.Marker; 026import org.apache.logging.log4j.spi.ExtendedLogger; 027 028/** 029 * Logs each line written to a pre-defined level. Can also be configured with a Marker. This class provides an interface 030 * that follows the {@link java.io.OutputStream} methods in spirit, but doesn't require output to any external stream. 031 * This class should <em>not</em> be used as a stream for an underlying logger unless it's being used as a bridge. 032 * Otherwise, infinite loops may occur! 033 * 034 * @since 2.1 035 */ 036public class LoggerOutputStream extends OutputStream { 037 private static final String FQCN = LoggerOutputStream.class.getName(); 038 039 private final ByteStreamLogger logger; 040 private final String fqcn; 041 042 protected LoggerOutputStream(final ExtendedLogger logger, final Level level, final Marker marker, 043 final Charset charset, final String fqcn) { 044 this.logger = new ByteStreamLogger(logger, level, marker, charset); 045 this.fqcn = fqcn == null ? FQCN : fqcn; 046 } 047 048 @Override 049 public void close() throws IOException { 050 this.logger.close(this.fqcn); 051 } 052 053 @Override 054 public void flush() throws IOException { 055 // do nothing 056 } 057 058 @Override 059 public void write(final byte[] b) throws IOException { 060 this.logger.put(this.fqcn, b, 0, b.length); 061 } 062 063 @Override 064 public void write(final byte[] b, final int off, final int len) throws IOException { 065 this.logger.put(this.fqcn, b, off, len); 066 } 067 068 @Override 069 public void write(final int b) throws IOException { 070 this.logger.put(this.fqcn, (byte) (b & 0xFF)); 071 } 072}