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https://issues.apache.org/jira/browse/DIRMINA-428?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel#action_12524417
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Trustin Lee commented on DIRMINA-428:
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I'd prefer not to modify IoSession (i.e. adding write(Object, int)) because it
will be effective only when the filter is inserted. Providing some extension
point on the filter side (e.g. using Comparator interface) or making the
message classes to implement Comparable might be better solution.
> Message priorities
> ------------------
>
> Key: DIRMINA-428
> URL: https://issues.apache.org/jira/browse/DIRMINA-428
> Project: MINA
> Issue Type: New Feature
> Reporter: Adrian Sandor
>
> I would like MINA to support sending messages with different priorities, so
> that higher-priority messages will get sent out first (in the order that they
> were added to the queue, if they have the same priority)
> Here's how I think this could be implemented:
> - define different priorities; I suggest using numeric constants, such as
> LOWEST=0, LOW=25, NORMAL=50, HIGH=75, HIGHEST=100, allowing any custom values
> from 0 to 100
> - add a priority field to WriteRequest, and implement Comparable using it
> - add a write(Object message, int priority) method to IoSession
> - make write(message) call write(message, NORMAL)
> - make the writeRequestQueue in the session implementations a priority queue,
> but one that preserves the original order of "equal" elements
> - ensure that a higher priority message won't interrupt sending out another
> message (if pending)
> - if desired, write an IoFilter that can manipulate the priority
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