[IMAP-377] IMAPServer dosen't stop it's HashedWheelTimer on shutdown

• Type: Bug
• Status: Closed
• Priority: Minor
• Resolution: Fixed
• Component/s: Protocol
• Environment: Linux (arch) with Oracle JDK 6 and eclipse 4.3.0
• Assignee: Eric Charles
• Reporter: Daniel Gryniewicz
• Created: 16/Sep/13 14:01
• Updated: 06/Sep/21 01:45
• Resolved: 06/Sep/21 01:45

Description

protocols/protocols-imap4/src/main/java/org/apache/james/imapserver/netty/IMAPServer.java, the IMAPServer class implements createPipelineFactory(), which creates an anonymous ChannelPipelineFactory class that has, among other things, a HashedWHeelTimer in it. This timer is never stopped, causing the JVM to hang on shutdown.

My solution (attached) was to create a private inner class that implements ExternalResourceReleasable, which causes the pipeline termination code to allow the factory to stop the timer.