nl.ordina.bag.etl.mail.loader.POP3MutatiesFileLoader.java Source code

Introduction

Here is the source code for nl.ordina.bag.etl.mail.loader.POP3MutatiesFileLoader.java

Source

/**
 * Copyright 2013 Ordina
 *
 * 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 nl.ordina.bag.etl.mail.loader;

import java.io.FileNotFoundException;
import java.io.FileOutputStream;
import java.io.IOException;
import java.util.Properties;
import java.util.UUID;

import javax.mail.Flags;
import javax.mail.Folder;
import javax.mail.Message;
import javax.mail.MessagingException;
import javax.mail.Session;
import javax.mail.Store;
import javax.xml.bind.JAXBException;

import nl.ordina.bag.etl.mail.handler.MessageHandler;
import nl.ordina.bag.etl.mail.handler.TestMessageHandler;
import nl.ordina.bag.etl.processor.ProcessingException;

import org.apache.commons.logging.Log;
import org.apache.commons.logging.LogFactory;

public class POP3MutatiesFileLoader implements MailProcessor {
    private static String folderName = "INBOX";
    protected transient Log logger = LogFactory.getLog(this.getClass());
    private MessageHandler messageHandler;
    private String protocol;
    private String host;
    private int port;
    private String username;
    private String password;
    private String backupPath;

    @Override
    public void processMessages() {
        try {
            Session session = Session.getDefaultInstance(new Properties(), null);
            Store store = session.getStore(protocol);
            if (port == 0)
                store.connect(host, username, password);
            else
                store.connect(host, port, username, password);

            Folder folder = store.getFolder(folderName);
            if (folder == null)
                throw new RuntimeException("Folder " + folderName + " not found!");
            folder.open(Folder.READ_WRITE);

            try {
                Message[] messages = folder.getMessages();
                for (Message message : messages) {
                    backup(message);
                    messageHandler.handle(message);
                    message.setFlags(new Flags(Flags.Flag.DELETED), true);
                }
            } finally {
                folder.close(true);
                store.close();
            }
        } catch (MessagingException | IOException | JAXBException e) {
            throw new ProcessingException(e);
        }
    }

    private void backup(Message message) throws FileNotFoundException, IOException, MessagingException {
        String filename = UUID.randomUUID().toString().concat(".txt");
        message.writeTo(new FileOutputStream(backupPath.concat(filename)));
    }

    public void setMessageHandler(MessageHandler messageHandler) {
        this.messageHandler = messageHandler;
    }

    public void setProtocol(String protocol) {
        this.protocol = protocol;
    }

    public void setHost(String host) {
        this.host = host;
    }

    public void setPort(int port) {
        this.port = port;
    }

    public void setUsername(String username) {
        this.username = username;
    }

    public void setPassword(String password) {
        this.password = password;
    }

    public void setBackupPath(String backupPath) {
        this.backupPath = backupPath;
    }

    public static void main(String[] args) {
        POP3MutatiesFileLoader mailProcessor = new POP3MutatiesFileLoader();
        mailProcessor.setMessageHandler(new TestMessageHandler());
        mailProcessor.setProtocol("pop3");
        mailProcessor.setHost("localhost");
        mailProcessor.setPort(110);
        mailProcessor.setUsername("username");
        mailProcessor.setPassword("password");
        mailProcessor.setBackupPath("h:/backup/");
        mailProcessor.processMessages();
    }

}