[jira] [Created] (CAMEL-7739) camel-mail poller onCompletion Folder is not Open

["Laabidi Raissi (JIRA)" <ji...@apache.org>]

Laabidi Raissi created CAMEL-7739:
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             Summary: camel-mail poller onCompletion Folder is not Open
                 Key: CAMEL-7739
                 URL: https://issues.apache.org/jira/browse/CAMEL-7739
             Project: Camel
          Issue Type: Bug
          Components: camel-core, camel-mail
    Affects Versions: 2.13.0
            Reporter: Laabidi Raissi


I think I found a bug in Camel OncompletionProcessor code when used with a Mail poller route and onCompletion.
The error occurs when the Log level is set to DEBUG or TRACE. In that case the logger tries to call the toString() method of the DefaultExchange class which calls org.apache.camel.component.mail.MailMessage.toString().

At that stage, the POP3Folder is already closed.
A very obvious (but not elegant) solution, would be to add a try-catch block to the log instruction. 
Otherwise, I think a good solution is to change the DefaultExchange#toString method.
Here is the exception that occured:

java.lang.IllegalStateException: Folder is not Open
	at com.sun.mail.pop3.POP3Folder.checkOpen(POP3Folder.java:551)
	at com.sun.mail.pop3.POP3Folder.getProtocol(POP3Folder.java:581)
	at com.sun.mail.pop3.POP3Message.loadHeaders(POP3Message.java:606)
	at com.sun.mail.pop3.POP3Message.getHeader(POP3Message.java:383)
	at javax.mail.internet.MimeMessage.getAddressHeader(MimeMessage.java:701)
	at javax.mail.internet.MimeMessage.getFrom(MimeMessage.java:362)
	at org.apache.camel.component.mail.MailUtils.dumpMessage(MailUtils.java:106)
	at org.apache.camel.component.mail.MailMessage.toString(MailMessage.java:49)
	at java.lang.String.valueOf(String.java:2854)
	at java.lang.StringBuilder.append(StringBuilder.java:128)
	at org.apache.camel.impl.DefaultExchange.toString(DefaultExchange.java:81)
	at org.slf4j.helpers.MessageFormatter.safeObjectAppend(MessageFormatter.java:304)
	at org.slf4j.helpers.MessageFormatter.deeplyAppendParameter(MessageFormatter.java:276)
	at org.slf4j.helpers.MessageFormatter.arrayFormat(MessageFormatter.java:230)
	at ch.qos.logback.classic.spi.LoggingEvent.<init>(LoggingEvent.java:115)
	at ch.qos.logback.classic.Logger.buildLoggingEventAndAppend(Logger.java:439)
	at ch.qos.logback.classic.Logger.filterAndLog_1(Logger.java:413)
	at ch.qos.logback.classic.Logger.debug(Logger.java:506)
	at org.apache.camel.processor.OnCompletionProcessor$OnCompletionSynchronization$1.call(OnCompletionProcessor.java:178)
	at org.apache.camel.processor.OnCompletionProcessor$OnCompletionSynchronization$1.call(OnCompletionProcessor.java:176)
	at java.util.concurrent.FutureTask$Sync.innerRun(FutureTask.java:334)
	at java.util.concurrent.FutureTask.run(FutureTask.java:166)
	at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1145)
	at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:615)
	at java.lang.Thread.run(Thread.java:722)




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