| /**************************************************************** |
| * 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.james.transport.mailets; |
| |
| import java.util.Optional; |
| |
| import javax.mail.MessagingException; |
| |
| import org.apache.james.queue.api.MailPrioritySupport; |
| import org.apache.mailet.Attribute; |
| import org.apache.mailet.AttributeValue; |
| import org.apache.mailet.Mail; |
| import org.apache.mailet.base.GenericMailet; |
| |
| /** |
| * This mailet sets the priority of the incoming mail. |
| * |
| * Example configuration: |
| * |
| * <mailet match="All" class="WithPriority"> |
| * <priority>7</priority> |
| * </mailet> |
| */ |
| public class WithPriority extends GenericMailet { |
| |
| private Attribute priority; |
| |
| @Override |
| public String getMailetInfo() { |
| return "With Priority Mailet"; |
| } |
| |
| @Override |
| public void init() throws MessagingException { |
| Integer priorityRaw = Optional.ofNullable(getInitParameter("priority", null)) |
| .map(Integer::valueOf) |
| .orElseThrow(() -> new IllegalArgumentException("'priority' init parameter is compulsory")); |
| |
| if (priorityRaw < 0 || priorityRaw > 9) { |
| throw new IllegalArgumentException("Invalid priority: Priority should be from 0 to 9"); |
| } |
| priority = new Attribute(MailPrioritySupport.MAIL_PRIORITY, AttributeValue.of(priorityRaw)); |
| } |
| |
| @Override |
| public void service(Mail mail) throws MessagingException { |
| mail.setAttribute(priority); |
| } |
| } |