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.FilterWriter; 021import java.io.IOException; 022import java.io.Writer; 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.Writer} methods in spirit, but doesn't require output to any external out. 031 * 032 * @since 2.1 033 */ 034public class LoggerFilterWriter extends FilterWriter { 035 private static final String FQCN = LoggerFilterWriter.class.getName(); 036 037 private final CharStreamLogger logger; 038 private final String fqcn; 039 040 protected LoggerFilterWriter(final Writer out, final ExtendedLogger logger, final String fqcn, final Level level, 041 final Marker marker) { 042 super(out); 043 this.logger = new CharStreamLogger(logger, level, marker); 044 this.fqcn = fqcn == null ? FQCN : fqcn; 045 } 046 047 @Override 048 public void close() throws IOException { 049 this.out.close(); 050 this.logger.close(this.fqcn); 051 } 052 053 @Override 054 public void flush() throws IOException { 055 this.out.flush(); 056 } 057 058 @Override 059 public String toString() { 060 return LoggerFilterWriter.class.getSimpleName() + "{writer=" + this.out + '}'; 061 } 062 063 @Override 064 public void write(final char[] cbuf) throws IOException { 065 this.out.write(cbuf); 066 this.logger.put(this.fqcn, cbuf, 0, cbuf.length); 067 } 068 069 @Override 070 public void write(final char[] cbuf, final int off, final int len) throws IOException { 071 this.out.write(cbuf, off, len); 072 this.logger.put(this.fqcn, cbuf, off, len); 073 } 074 075 @Override 076 public void write(final int c) throws IOException { 077 this.out.write(c); 078 this.logger.put(this.fqcn, (char) c); 079 } 080 081 @Override 082 public void write(final String str) throws IOException { 083 this.out.write(str); 084 this.logger.put(this.fqcn, str, 0, str.length()); 085 } 086 087 @Override 088 public void write(final String str, final int off, final int len) throws IOException { 089 this.out.write(str, off, len); 090 this.logger.put(this.fqcn, str, off, len); 091 } 092}