84 lines
3.2 KiB
Java
84 lines
3.2 KiB
Java
package davmail.exchange;
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import davmail.Settings;
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import org.apache.log4j.Logger;
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import javax.mail.MessagingException;
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import java.io.IOException;
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import java.io.OutputStream;
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import java.net.SocketException;
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/**
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* Message load thread.
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* Used to avoid timeouts over POP and IMAP
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*/
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public class MessageLoadThread extends Thread {
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private static final Logger LOGGER = Logger.getLogger(MessageLoadThread.class);
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protected boolean isComplete = false;
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protected ExchangeSession.Message message;
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protected IOException ioException;
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protected MessagingException messagingException;
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protected MessageLoadThread(String threadName, ExchangeSession.Message message) {
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super(threadName + "-LoadMessage");
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setDaemon(true);
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this.message = message;
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}
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public void run() {
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try {
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message.loadMimeMessage();
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} catch (IOException e) {
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ioException = e;
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} catch (MessagingException e) {
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messagingException = e;
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} finally {
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isComplete = true;
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}
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}
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/**
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* Load mime message in a separate thread if over 1MB.
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* Send a space character every ten seconds to avoid client timeouts
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*
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* @param message message
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* @param outputStream output stream
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* @throws IOException on error
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* @throws MessagingException on error
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*/
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public static void loadMimeMessage(ExchangeSession.Message message, OutputStream outputStream) throws IOException, MessagingException {
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if (message.size < 1024 * 1024) {
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message.loadMimeMessage();
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} else {
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LOGGER.debug("Load large message " + (message.size / 1024) + "KB uid " + message.getUid() + " imapUid " + message.getImapUid() + " in a separate thread");
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try {
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MessageLoadThread messageLoadThread = new MessageLoadThread(currentThread().getName(), message);
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messageLoadThread.start();
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while (!messageLoadThread.isComplete) {
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messageLoadThread.join(10000);
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LOGGER.debug("Still loading uid " + message.getUid() + " imapUid " + message.getImapUid());
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if (Settings.getBooleanProperty("davmail.imapEnableKeepalive", false)) {
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try {
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outputStream.write(' ');
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outputStream.flush();
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} catch (SocketException e) {
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// client closed connection, stop thread
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message.dropMimeMessage();
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messageLoadThread.interrupt();
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throw e;
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}
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}
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}
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if (messageLoadThread.ioException != null) {
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throw messageLoadThread.ioException;
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}
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if (messageLoadThread.messagingException != null) {
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throw messageLoadThread.messagingException;
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}
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} catch (InterruptedException e) {
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throw new IOException(e + " " + e.getMessage());
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}
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}
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}
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} |