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.gae.mail;
018
019 import com.google.appengine.api.mail.MailService.Message;
020
021 import org.apache.camel.Exchange;
022 import org.apache.camel.component.gae.bind.OutboundBinding;
023
024 /**
025 * Binds the {@link Message} of the mail service to a Camel {@link Exchange}.
026 */
027 public class GMailBinding implements OutboundBinding<GMailEndpoint, Message, Void> {
028
029 /**
030 * Camel header for setting the mail message sender.
031 */
032 public static final String GMAIL_SENDER = "CamelGmailSender";
033
034 /**
035 * Camel header for setting the mail message subject.
036 */
037 public static final String GMAIL_SUBJECT = "CamelGmailSubject";
038
039 /**
040 * Camel header for setting the mail message to-recipient (single recipient
041 * or comma-separated list).
042 */
043 public static final String GMAIL_TO = "CamelGmailTo";
044
045 /**
046 * Camel header for setting the mail message cc-recipient (single recipient
047 * or comma-separated list).
048 */
049 public static final String GMAIL_CC = "CamelGmailCc";
050
051 /**
052 * Camel header for setting the mail message bcc-recipient (single recipient
053 * or comma-separated list).
054 */
055 public static final String GMAIL_BCC = "CamelGmailBcc";
056
057 /**
058 * Reads data from <code>exchange</code> and writes it to a newly created
059 * {@link Message} instance. The <code>request</code> parameter is
060 * ignored.
061 *
062 * @param endpoint
063 * @param exchange
064 * @param request
065 * ignored.
066 * @return a newly created {@link Message} instance containing data from
067 * <code>exchange</code>.
068 */
069 public Message writeRequest(GMailEndpoint endpoint, Exchange exchange, Message request) {
070 Message message = new Message();
071 writeFrom(endpoint, exchange, message);
072 writeTo(endpoint, exchange, message);
073 writeCc(endpoint, exchange, message);
074 writeBcc(endpoint, exchange, message);
075 writeSubject(endpoint, exchange, message);
076 writeBody(endpoint, exchange, message);
077 writeAttachments(endpoint, exchange, message);
078 return message;
079 }
080
081 /**
082 * @throws UnsupportedOperationException.
083 */
084 public Exchange readResponse(GMailEndpoint endpoint, Exchange exchange, Void response) {
085 throw new UnsupportedOperationException("gmail responses not supported");
086 }
087
088 protected void writeFrom(GMailEndpoint endpoint, Exchange exchange, Message request) {
089 String sender = (String)exchange.getIn().getHeader(GMAIL_SENDER);
090 if (sender == null) {
091 sender = endpoint.getSender();
092 }
093 request.setSender(sender);
094 }
095
096 protected void writeTo(GMailEndpoint endpoint, Exchange exchange, Message request) {
097 String to = (String)exchange.getIn().getHeader(GMAIL_TO);
098 if (to == null) {
099 to = endpoint.getTo();
100 }
101 request.setTo(to.split(","));
102 }
103
104 protected void writeCc(GMailEndpoint endpoint, Exchange exchange, Message request) {
105 String cc = (String)exchange.getIn().getHeader(GMAIL_CC);
106 if (cc == null) {
107 cc = endpoint.getCc();
108 }
109 if (cc != null) {
110 request.setCc(cc.split(","));
111 }
112 }
113
114 protected void writeBcc(GMailEndpoint endpoint, Exchange exchange, Message request) {
115 String bcc = (String)exchange.getIn().getHeader(GMAIL_BCC);
116 if (bcc == null) {
117 bcc = endpoint.getBcc();
118 }
119 if (bcc != null) {
120 request.setBcc(bcc.split(","));
121 }
122 }
123
124 protected void writeSubject(GMailEndpoint endpoint, Exchange exchange, Message request) {
125 String subject = (String)exchange.getIn().getHeader(GMAIL_SUBJECT);
126 if (subject == null) {
127 subject = endpoint.getSubject();
128 }
129 request.setSubject(subject);
130 }
131
132 protected void writeBody(GMailEndpoint endpoint, Exchange exchange, Message request) {
133 // TODO: allow message header or endpoint uri to configure character encoding
134 request.setTextBody(exchange.getIn().getBody(String.class));
135 }
136
137 protected void writeAttachments(GMailEndpoint endpoint, Exchange exchange, Message request) {
138 // TODO: support attachments
139 }
140
141 }