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https://issues.apache.org/jira/browse/JAMES-3705?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17478543#comment-17478543
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Karsten Otto commented on JAMES-3705:
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My original intent was extensibility with minimal code change, hence just the
lonely protected method. It still makes sense for this purpose, e.g. we hook up
a custom monitoring solution that probably nobody else would be interested in.
I agree that it also makes sense to improve James metrics for POP3. I can take
a look at integrating MetricFactory, but this is a different scope and a bigger
change. I would prefer to do this in a separate ticket.
> Extensible POP3 handlers
> ------------------------
>
> Key: JAMES-3705
> URL: https://issues.apache.org/jira/browse/JAMES-3705
> Project: James Server
> Issue Type: Improvement
> Components: POP3Server
> Affects Versions: master
> Reporter: Karsten Otto
> Priority: Minor
> Time Spent: 10m
> Remaining Estimate: 0h
>
> I propose a minor refactoring of the POP3 {{{}RetrCmdHandler{}}}, retrieving
> the message content in a separate protected method:
>
> {code:java}
> protected InputStream getMessageContent(POP3Session session, MessageMetaData
> data){code}
> With this developers can more easily create custom variants of this command,
> to access the session and message metadata, wrap the message stream to e.g.
> gather transfer statistics and monitor ultimate success/failure.
> Since the {{TopCmdHandler}} extends {{{}RetrCmdHandler{}}}, it can trivially
> use this method as well for the same benefit.
>
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