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https://issues.apache.org/jira/browse/PROTON-1450?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15987244#comment-15987244
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Alan Conway commented on PROTON-1450:
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Apologies for long delay: you are correct that filters apply only to the
source. The proton C libary abstracts source and target as "terminus" but that
includes everything from source and target, so I think the Go electorn package
should follow the spec rather than the C library.
I prefer an AnnotationKey type because the same restricted type is used in a
few places in the spec. Doing it as a type allows all the encode/decode rules
to be handled in one place, and lets you store/pass AnnotationKey's around in
your application without "forgetting" the restrictions. I'll take a stab at
coding it up.
> Add Filter LinkOption to Electron API
> -------------------------------------
>
> Key: PROTON-1450
> URL: https://issues.apache.org/jira/browse/PROTON-1450
> Project: Qpid Proton
> Issue Type: Improvement
> Components: go-binding
> Reporter: Kale Blankenship
> Assignee: Alan Conway
>
> There doesn't appear to be a way to set filters with the current Go bindings.
> Microsoft's Event Hubs use filters to indicate the starting offset of
> messages
> (http://azure.github.io/amqpnetlite/articles/azure_eventhubs.html#filter).
> Without this option it would be difficult to properly use the bindings with
> Event Hubs.
> There is a wrapper which patches the bindings to provide the functionality
> here: https://github.com/recobe182/gohub. Though I am not familiar enough
> with Qpid to determine if the patch is reasonable.
> Thank you for considering this request and creating/maintaining this project!
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