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 package org.apache.camel.component.file; 018 019 import java.io.File; 020 import java.io.FileOutputStream; 021 import java.io.InputStream; 022 import java.io.RandomAccessFile; 023 import java.nio.ByteBuffer; 024 import java.nio.channels.FileChannel; 025 026 import org.apache.camel.Exchange; 027 import org.apache.camel.Message; 028 import org.apache.camel.impl.DefaultProducer; 029 import org.apache.camel.util.ExchangeHelper; 030 import org.apache.camel.util.ObjectHelper; 031 import org.apache.camel.util.UuidGenerator; 032 import org.apache.commons.logging.Log; 033 import org.apache.commons.logging.LogFactory; 034 035 /** 036 * For producing files. 037 * 038 * @version $Revision: 676309 $ 039 */ 040 public class FileProducer extends DefaultProducer { 041 private static final transient Log LOG = LogFactory.getLog(FileProducer.class); 042 private FileEndpoint endpoint; 043 044 public FileProducer(FileEndpoint endpoint) { 045 super(endpoint); 046 this.endpoint = endpoint; 047 } 048 049 public FileEndpoint getEndpoint() { 050 return (FileEndpoint) super.getEndpoint(); 051 } 052 053 public void process(Exchange exchange) throws Exception { 054 FileExchange fileExchange = endpoint.createExchange(exchange); 055 process(fileExchange); 056 ExchangeHelper.copyResults(exchange, fileExchange); 057 } 058 059 public void process(FileExchange exchange) throws Exception { 060 InputStream in = ExchangeHelper.getMandatoryInBody(exchange, InputStream.class); 061 File file = createFileName(exchange.getIn()); 062 buildDirectory(file); 063 064 if (LOG.isDebugEnabled()) { 065 LOG.debug("About to write to: " + file + " from exchange: " + exchange); 066 } 067 FileChannel fc = null; 068 try { 069 if (getEndpoint().isAppend()) { 070 fc = new RandomAccessFile(file, "rw").getChannel(); 071 fc.position(fc.size()); 072 } else { 073 fc = new FileOutputStream(file).getChannel(); 074 } 075 076 int size = getEndpoint().getBufferSize(); 077 byte[] buffer = new byte[size]; 078 ByteBuffer byteBuffer = ByteBuffer.wrap(buffer); 079 while (true) { 080 int count = in.read(buffer); 081 if (count <= 0) { 082 break; 083 } else if (count < size) { 084 byteBuffer = ByteBuffer.wrap(buffer, 0, count); 085 fc.write(byteBuffer); 086 break; 087 } else { 088 fc.write(byteBuffer); 089 byteBuffer.clear(); 090 } 091 } 092 } finally { 093 ObjectHelper.close(in, file.getName(), LOG); 094 ObjectHelper.close(fc, file.getName(), LOG); 095 } 096 } 097 098 protected File createFileName(Message message) { 099 File answer; 100 101 String name = null; 102 if (!endpoint.isIgnoreFileNameHeader()) { 103 name = message.getHeader(FileComponent.HEADER_FILE_NAME, String.class); 104 } 105 106 File endpointFile = endpoint.getFile(); 107 if (endpointFile.isDirectory()) { 108 if (name != null) { 109 answer = new File(endpointFile, name); 110 if (answer.isDirectory()) { 111 answer = new File(answer, endpoint.getGeneratedFileName(message)); 112 } 113 } else { 114 answer = new File(endpointFile, endpoint.getGeneratedFileName(message)); 115 } 116 } else { 117 if (name == null) { 118 answer = endpointFile; 119 } else { 120 answer = new File(endpointFile, name); 121 } 122 } 123 124 // lets store the name we really used in the header, so end-users can retrieve it 125 message.setHeader(FileComponent.HEADER_FILE_NAME_PRODUCED, answer.getAbsolutePath()); 126 127 return answer; 128 } 129 130 private void buildDirectory(File file) { 131 String dirName = file.getAbsolutePath(); 132 int index = dirName.lastIndexOf(File.separatorChar); 133 if (index > 0) { 134 dirName = dirName.substring(0, index); 135 File dir = new File(dirName); 136 dir.mkdirs(); 137 } 138 } 139 140 }