Tellier Benoit created JAMES-2279:
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Summary: Write a WithPriority mailet and HasPriority matchers
Key: JAMES-2279
URL: https://issues.apache.org/jira/browse/JAMES-2279
Project: James Server
Issue Type: New Feature
Components: Mailet Contributions
Affects Versions: master
Reporter: Tellier Benoit
James mail queues is handling mail priorities. See the *MailPrioritySupport*
interface.
This is done using the MAIL_PRIORITY mail attribute. It is an integer property
ranging from 0 (low) to 9 (high) and mail queue component will default to 5.
Today, the mail processing unit akka mailetContainer can not change the
priority set by the SMTP layer (using *MailPriorityHandler*). This is a problem
as we can not re-prioritise outgoing emails, for instance in remote delivery
queues.
I would thus propose the following mailet:
{code:xml}
<mailet matcher="All" class="WithPriority">
<value>8</value>
</mailet>
{code}
Furthermore, we might want to customize processing logic depending on the
priority (might it just be for debugging purpose).
To do so, I propose to introduce the following matchers:
{code:xml}
<mailet matcher="HasPriority=8" class="Any"/>
<mailet matcher="AtLeastPriority=8" class="Any"/>
<mailet matcher="AtMostPriority=8" class="Any"/>
{code}
*How to do this?*
In the `server/mailet/mailets` project, in the mailet package create the
WithPriority mailet which sets the MAIL_PRIORITY attribute.
Create the matchers in `server/mailet/mailets` in the matcher package.
Write unit tests for these mailets / matchers.
Use MailetUtil content to parse the integer conditions/value.
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