ImapIdleChannelAdapter infinite loop on AUTHENTICATIONFAILED - spring-integration

Question

I'm using ImapIdleChannelAdapter to listen to mailboxes, taking a list with credentials in a database.
If a password is wrong, I get an AUTHENTICATIONFAILED.
The problem is that it will never stop trying to reconnect.
I tried to set shouldReconnectAutomatically to false, but it will just stop the IdleTask from resubmitting, not the ReceivingTask.
Code from ImapIdleChannedAdapter:
private class ReceivingTask implements Runnable {
ReceivingTask() {
}
#Override
public void run() {
if (isRunning()) {
try {
ImapIdleChannelAdapter.this.idleTask.run();
logger.debug("Task completed successfully. Re-scheduling it again right away.");
}
catch (Exception ex) { //run again after a delay
logger.warn(ex, () -> "Failed to execute IDLE task. Will attempt to resubmit in "
+ ImapIdleChannelAdapter.this.reconnectDelay + " milliseconds.");
ImapIdleChannelAdapter.this.receivingTaskTrigger.delayNextExecution();
publishException(ex);
}
}
}
}
private class IdleTask implements Runnable {
IdleTask() {
}
#Override
public void run() {
if (isRunning()) {
try {
logger.debug("waiting for mail");
ImapIdleChannelAdapter.this.mailReceiver.waitForNewMessages();
Folder folder = ImapIdleChannelAdapter.this.mailReceiver.getFolder();
if (folder != null && folder.isOpen() && isRunning()) {
Object[] mailMessages = ImapIdleChannelAdapter.this.mailReceiver.receive();
logger.debug(() -> "received " + mailMessages.length + " mail messages");
for (Object mailMessage : mailMessages) {
Runnable messageSendingTask = createMessageSendingTask(mailMessage);
if (isRunning()) {
ImapIdleChannelAdapter.this.sendingTaskExecutor.execute(messageSendingTask);
}
}
}
}
catch (MessagingException ex) {
logger.warn(ex, "error occurred in idle task");
if (ImapIdleChannelAdapter.this.shouldReconnectAutomatically) {
throw new IllegalStateException("Failure in 'idle' task. Will resubmit.", ex);
}
else {
throw new org.springframework.messaging.MessagingException(
"Failure in 'idle' task. Will NOT resubmit.", ex);
}
}
}
}
}
So in my logs I get infinite:
WARN 2777 --- [ask-scheduler-3] o.s.i.mail.ImapIdleChannelAdapter : Failed to execute IDLE task. Will attempt to resubmit in 10000 milliseconds.
org.springframework.messaging.MessagingException: Failure in 'idle' task. Will NOT resubmit.; nested exception is javax.mail.AuthenticationFailedException: [AUTHENTICATIONFAILED] Invalid credentials (Failure)
at org.springframework.integration.mail.ImapIdleChannelAdapter$IdleTask.run(ImapIdleChannelAdapter.java:290)
at org.springframework.integration.mail.ImapIdleChannelAdapter$ReceivingTask.run(ImapIdleChannelAdapter.java:246)
at org.springframework.scheduling.support.DelegatingErrorHandlingRunnable.run(DelegatingErrorHandlingRunnable.java:54)
at org.springframework.scheduling.concurrent.ReschedulingRunnable.run(ReschedulingRunnable.java:95)
at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511)
at java.util.concurrent.FutureTask.run$$$capture(FutureTask.java:266)
at java.util.concurrent.FutureTask.run(FutureTask.java)
at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$201(ScheduledThreadPoolExecutor.java:180)
at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:293)
at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149)
at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624)
at java.lang.Thread.run(Thread.java:748)
Caused by: javax.mail.AuthenticationFailedException: [AUTHENTICATIONFAILED] Invalid credentials (Failure)
at com.sun.mail.imap.IMAPStore.protocolConnect(IMAPStore.java:708)
at javax.mail.Service.connect(Service.java:342)
at javax.mail.Service.connect(Service.java:222)
at javax.mail.Service.connect(Service.java:171)
at org.springframework.integration.mail.AbstractMailReceiver.connectStoreIfNecessary(AbstractMailReceiver.java:331)
at org.springframework.integration.mail.AbstractMailReceiver.openFolder(AbstractMailReceiver.java:338)
at org.springframework.integration.mail.ImapMailReceiver.waitForNewMessages(ImapMailReceiver.java:176)
at org.springframework.integration.mail.ImapIdleChannelAdapter$IdleTask.run(ImapIdleChannelAdapter.java:271)
... 11 common frames omitted
Those logs are odd:
Failed to execute IDLE task. Will attempt to resubmit in 10000 milliseconds
Failure in 'idle' task. Will NOT resubmit.
Is there a possibility to stop the reconnexion attempts?
I don't really want to set the reconnectDelay to absurd duration... It does not feel right.
Thank you!

Answer 1

Add an ApplicationListener<ImapIdleExceptionEvent> bean (or an #EventListener method) to receive ImapIdleExceptionEvents.
You can then stop the adapter in the event listener (the channel adapter is the source of the event).