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.IOException; 022 import java.io.InputStream; 023 import java.io.RandomAccessFile; 024 import java.nio.ByteBuffer; 025 import java.nio.channels.FileChannel; 026 027 import org.apache.camel.Exchange; 028 import org.apache.camel.Message; 029 import org.apache.camel.Producer; 030 import org.apache.camel.impl.DefaultProducer; 031 import org.apache.camel.util.ExchangeHelper; 032 import org.apache.commons.logging.Log; 033 import org.apache.commons.logging.LogFactory; 034 035 /** 036 * A {@link Producer} implementation for File 037 * 038 * @version $Revision: 37863 $ 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 // TODO is it really worth using a FileExchange as the core type? 055 FileExchange fileExchange = endpoint.createExchange(exchange); 056 process(fileExchange); 057 ExchangeHelper.copyResults(exchange, fileExchange); 058 } 059 060 public void process(FileExchange exchange) throws Exception { 061 if (ExchangeHelper.isOutCapable(exchange)) { 062 // lets poll the file 063 Message out = exchange.getOut(true); 064 endpoint.configureMessage(endpoint.getFile(), out); 065 return; 066 } 067 068 InputStream in = ExchangeHelper.getMandatoryInBody(exchange, InputStream.class); 069 File file = createFileName(exchange.getIn()); 070 buildDirectory(file); 071 072 if (LOG.isDebugEnabled()) { 073 LOG.debug("About to write to: " + file + " from exchange: " + exchange); 074 } 075 FileChannel fc = null; 076 try { 077 if (getEndpoint().isAppend()) { 078 fc = new RandomAccessFile(file, "rw").getChannel(); 079 fc.position(fc.size()); 080 } else { 081 fc = new FileOutputStream(file).getChannel(); 082 } 083 084 int size = getEndpoint().getBufferSize(); 085 byte[] buffer = new byte[size]; 086 ByteBuffer byteBuffer = ByteBuffer.wrap(buffer); 087 while (true) { 088 int count = in.read(buffer); 089 if (count <= 0) { 090 break; 091 } else if (count < size) { 092 byteBuffer = ByteBuffer.wrap(buffer, 0, count); 093 fc.write(byteBuffer); 094 break; 095 } else { 096 fc.write(byteBuffer); 097 byteBuffer.clear(); 098 } 099 } 100 } finally { 101 if (in != null) { 102 try { 103 in.close(); 104 } catch (IOException e) { 105 LOG.warn("Failed to close input: " + e, e); 106 } 107 } 108 if (fc != null) { 109 try { 110 fc.close(); 111 } catch (IOException e) { 112 LOG.warn("Failed to close output: " + e, e); 113 } 114 } 115 } 116 } 117 118 protected File createFileName(Message message) { 119 File answer; 120 121 String name = null; 122 if (!endpoint.isIgnoreFileNameHeader()) { 123 name = message.getHeader(FileComponent.HEADER_FILE_NAME, String.class); 124 } 125 126 File endpointFile = endpoint.getFile(); 127 if (endpointFile.isDirectory()) { 128 if (name != null) { 129 answer = new File(endpointFile, name); 130 if (answer.isDirectory()) { 131 answer = new File(answer, message.getMessageId()); 132 } 133 } else { 134 answer = new File(endpointFile, message.getMessageId()); 135 } 136 } else { 137 if (name == null) { 138 answer = endpointFile; 139 } else { 140 answer = new File(endpointFile, name); 141 } 142 } 143 144 return answer; 145 } 146 147 private void buildDirectory(File file) { 148 String dirName = file.getAbsolutePath(); 149 int index = dirName.lastIndexOf(File.separatorChar); 150 if (index > 0) { 151 dirName = dirName.substring(0, index); 152 File dir = new File(dirName); 153 dir.mkdirs(); 154 } 155 } 156 157 }