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.mail; 018 019 import java.util.Iterator; 020 import java.util.Map; 021 import java.util.Set; 022 023 import javax.mail.Address; 024 import javax.mail.Message; 025 import javax.mail.MessagingException; 026 import javax.mail.internet.InternetAddress; 027 import javax.mail.internet.MimeMessage; 028 029 import org.apache.camel.Exchange; 030 import org.apache.camel.converter.ObjectConverter; 031 032 /** 033 * A Strategy used to convert between a Camel {@Exchange} and {@Message} to and 034 * from a Mail {@link MimeMessage} 035 * 036 * @version $Revision: 521240 $ 037 */ 038 public class MailBinding { 039 public void populateMailMessage(MailEndpoint endpoint, MimeMessage mimeMessage, Exchange exchange) { 040 try { 041 appendHeadersFromCamel(mimeMessage, exchange, exchange.getIn()); 042 043 String destination = endpoint.getConfiguration().getDestination(); 044 if (destination != null) { 045 mimeMessage.setRecipients(Message.RecipientType.TO, destination); 046 } 047 048 if (empty(mimeMessage.getFrom())) { 049 // lets default the address to the endpoint destination 050 String from = endpoint.getConfiguration().getFrom(); 051 mimeMessage.setFrom(new InternetAddress(from)); 052 } 053 mimeMessage.setText(exchange.getIn().getBody(String.class)); 054 } catch (Exception e) { 055 throw new RuntimeMailException("Failed to populate body due to: " + e + ". Exchange: " + exchange, e); 056 } 057 } 058 059 protected boolean empty(Address[] addresses) { 060 return addresses == null || addresses.length == 0; 061 } 062 063 /** 064 * Extracts the body from the Mail message 065 * 066 * @param exchange 067 * @param message 068 */ 069 public Object extractBodyFromMail(MailExchange exchange, Message message) { 070 try { 071 return message.getContent(); 072 } catch (Exception e) { 073 throw new RuntimeMailException("Failed to extract body due to: " + e + ". Message: " + message, e); 074 } 075 } 076 077 /** 078 * Appends the Mail headers from the Camel {@link MailMessage} 079 */ 080 protected void appendHeadersFromCamel(MimeMessage mimeMessage, Exchange exchange, org.apache.camel.Message camelMessage) throws MessagingException { 081 Set<Map.Entry<String, Object>> entries = camelMessage.getHeaders().entrySet(); 082 for (Map.Entry<String, Object> entry : entries) { 083 String headerName = entry.getKey(); 084 Object headerValue = entry.getValue(); 085 if (headerValue != null) { 086 if (shouldOutputHeader(camelMessage, headerName, headerValue)) { 087 088 // Mail messages can repeat the same header... 089 if (ObjectConverter.isCollection(headerValue)) { 090 Iterator iter = ObjectConverter.iterator(headerValue); 091 while (iter.hasNext()) { 092 Object value = iter.next(); 093 mimeMessage.addHeader(headerName, asString(exchange, value)); 094 } 095 } else { 096 mimeMessage.setHeader(headerName, asString(exchange, headerValue)); 097 } 098 } 099 } 100 } 101 } 102 103 /** 104 * Converts the given object value to a String 105 */ 106 protected String asString(Exchange exchange, Object value) { 107 return exchange.getContext().getTypeConverter().convertTo(String.class, value); 108 } 109 110 /** 111 * Strategy to allow filtering of headers which are put on the Mail message 112 */ 113 protected boolean shouldOutputHeader(org.apache.camel.Message camelMessage, String headerName, Object headerValue) { 114 return true; 115 } 116 }