/**
* Licensed to the Apache Software Foundation (ASF) under one or more
* contributor license agreements. See the NOTICE file distributed with
* this work for additional information regarding copyright ownership.
* The ASF licenses this file to You under the Apache License, Version 2.0
* (the "License"); you may not use this file except in compliance with
* the License. You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package org.apache.camel.component.gae.mail;
import com.google.appengine.api.mail.MailService.Message;
import org.apache.camel.Exchange;
import org.apache.camel.component.gae.bind.OutboundBinding;
/**
* Binds the {@link Message} of the mail service to a Camel {@link Exchange}.
*/
public class GMailBinding implements OutboundBinding<GMailEndpoint, Message, Void> {
/**
* Camel header for setting the mail message subject.
*/
public static final String GMAIL_SUBJECT = "org.apache.camel.component.gae.mail.Subject";
/**
* Camel header for setting the mail message recipient (list).
*/
public static final String GMAIL_TO = "org.apache.camel.component.gae.mail.To";
/**
* Reads data from <code>exchange</code> and writes it to a newly created
* {@link Message} instance. The <code>request</code> parameter is
* ignored.
*
* @param endpoint
* @param exchange
* @param request
* ignored.
* @return a newly created {@link Message} instance containing data from
* <code>exchange</code>.
*/
public Message writeRequest(GMailEndpoint endpoint, Exchange exchange, Message request) {
Message message = new Message();
writeFrom(endpoint, exchange, message);
writeTo(endpoint, exchange, message);
writeSubject(endpoint, exchange, message);
writeBody(endpoint, exchange, message);
writeAttachments(endpoint, exchange, message);
return message;
}
/**
* @throws UnsupportedOperationException.
*/
public Exchange readResponse(GMailEndpoint endpoint, Exchange exchange, Void response) {
throw new UnsupportedOperationException("gmail responses not supported");
}
protected void writeFrom(GMailEndpoint endpoint, Exchange exchange, Message request) {
request.setSender(endpoint.getSender());
}
protected void writeTo(GMailEndpoint endpoint, Exchange exchange, Message request) {
// TODO: support comma-separated list of receivers
String to = (String)exchange.getIn().getHeader(GMAIL_TO);
if (to == null) {
to = endpoint.getTo();
}
request.setTo(to);
}
protected void writeSubject(GMailEndpoint endpoint, Exchange exchange, Message request) {
String subject = (String)exchange.getIn().getHeader(GMAIL_SUBJECT);
if (subject == null) {
subject = endpoint.getSubject();
}
request.setSubject(subject);
}
protected void writeBody(GMailEndpoint endpoint, Exchange exchange, Message request) {
// TODO: allow message header or endpoint uri to configure character encoding
request.setTextBody(exchange.getIn().getBody(String.class));
}
protected void writeAttachments(GMailEndpoint endpoint, Exchange exchange, Message request) {
// TODO: support attachments
}
}