/*
* Copyright 2016 the original author or authors.
*
* Licensed 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.springframework.integration.mail.support;
import java.util.Date;
import java.util.Enumeration;
import java.util.Map;
import javax.mail.Header;
import javax.mail.internet.MimeMessage;
import org.springframework.integration.mail.MailHeaders;
import org.springframework.integration.mapping.HeaderMapper;
import org.springframework.messaging.MessageHeaders;
import org.springframework.messaging.MessagingException;
import org.springframework.util.LinkedMultiValueMap;
import org.springframework.util.MultiValueMap;
/**
* Maps an inbound {@link MimeMessage} to a {@link Map}.
*
* @author Gary Russell
* @since 4.3
*
*/
public class DefaultMailHeaderMapper implements HeaderMapper<MimeMessage> {
@Override
public void fromHeaders(MessageHeaders headers, MimeMessage target) {
throw new UnsupportedOperationException("Mapping to a mail message is not currently supported");
}
@Override
public Map<String, Object> toHeaders(MimeMessage source) {
Map<String, Object> headers = MailUtils.extractStandardHeaders(source);
try {
Enumeration<?> allHeaders = source.getAllHeaders();
MultiValueMap<String, String> rawHeaders = new LinkedMultiValueMap<String, String>();
while (allHeaders.hasMoreElements()) {
Object headerInstance = allHeaders.nextElement();
if (headerInstance instanceof Header) {
Header header = (Header) headerInstance;
rawHeaders.add(header.getName(), header.getValue());
}
}
headers.put(MailHeaders.RAW_HEADERS, rawHeaders);
headers.put(MailHeaders.FLAGS, source.getFlags());
int lineCount = source.getLineCount();
if (lineCount > 0) {
headers.put(MailHeaders.LINE_COUNT, lineCount);
}
Date receivedDate = source.getReceivedDate();
if (receivedDate != null) {
headers.put(MailHeaders.RECEIVED_DATE, receivedDate);
}
int size = source.getSize();
if (size > 0) {
headers.put(MailHeaders.SIZE, size);
}
headers.put(MailHeaders.EXPUNGED, source.isExpunged());
headers.put(MailHeaders.CONTENT_TYPE, source.getContentType());
}
catch (Exception e) {
throw new MessagingException("Failed to map message headers", e);
}
return headers;
}
}