monitor.java Source code

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Here is the source code for monitor.java

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/*
 * Copyright (c) 1996-2010 Oracle and/or its affiliates. All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 *
 *   - Redistributions of source code must retain the above copyright
 *     notice, this list of conditions and the following disclaimer.
 *
 *   - Redistributions in binary form must reproduce the above copyright
 *     notice, this list of conditions and the following disclaimer in the
 *     documentation and/or other materials provided with the distribution.
 *
 *   - Neither the name of Oracle nor the names of its
 *     contributors may be used to endorse or promote products derived
 *     from this software without specific prior written permission.
 *
 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS
 * IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
 * THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
 * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE COPYRIGHT OWNER OR
 * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
 * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
 * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
 * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
 * LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
 * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
 * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 */

import java.util.*;
import java.io.*;
import javax.mail.*;
import javax.mail.event.*;
import javax.activation.*;

import com.sun.mail.imap.*;

/* Monitors given mailbox for new mail */

public class monitor {

    public static void main(String argv[]) {
        if (argv.length != 5) {
            System.out.println("Usage: monitor <host> <user> <password> <mbox> <freq>");
            System.exit(1);
        }
        System.out.println("\nTesting monitor\n");

        try {
            Properties props = System.getProperties();

            // Get a Session object
            Session session = Session.getInstance(props, null);
            // session.setDebug(true);

            // Get a Store object
            Store store = session.getStore("imap");

            // Connect
            store.connect(argv[0], argv[1], argv[2]);

            // Open a Folder
            Folder folder = store.getFolder(argv[3]);
            if (folder == null || !folder.exists()) {
                System.out.println("Invalid folder");
                System.exit(1);
            }

            folder.open(Folder.READ_WRITE);

            // Add messageCountListener to listen for new messages
            folder.addMessageCountListener(new MessageCountAdapter() {
                public void messagesAdded(MessageCountEvent ev) {
                    Message[] msgs = ev.getMessages();
                    System.out.println("Got " + msgs.length + " new messages");

                    // Just dump out the new messages
                    for (int i = 0; i < msgs.length; i++) {
                        try {
                            System.out.println("-----");
                            System.out.println("Message " + msgs[i].getMessageNumber() + ":");
                            msgs[i].writeTo(System.out);
                        } catch (IOException ioex) {
                            ioex.printStackTrace();
                        } catch (MessagingException mex) {
                            mex.printStackTrace();
                        }
                    }
                }
            });

            // Check mail once in "freq" MILLIseconds
            int freq = Integer.parseInt(argv[4]);
            boolean supportsIdle = false;
            try {
                if (folder instanceof IMAPFolder) {
                    IMAPFolder f = (IMAPFolder) folder;
                    f.idle();
                    supportsIdle = true;
                }
            } catch (FolderClosedException fex) {
                throw fex;
            } catch (MessagingException mex) {
                supportsIdle = false;
            }
            for (;;) {
                if (supportsIdle && folder instanceof IMAPFolder) {
                    IMAPFolder f = (IMAPFolder) folder;
                    f.idle();
                    System.out.println("IDLE done");
                } else {
                    Thread.sleep(freq); // sleep for freq milliseconds

                    // This is to force the IMAP server to send us
                    // EXISTS notifications. 
                    folder.getMessageCount();
                }
            }

        } catch (Exception ex) {
            ex.printStackTrace();
        }
    }
}