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Posted to issues@beam.apache.org by "ASF GitHub Bot (Jira)" <ji...@apache.org> on 2020/09/10 20:05:00 UTC
[jira] [Work logged] (BEAM-10874) Support both Go versions of proto
(v1 & v2) with proto coder.
[ https://issues.apache.org/jira/browse/BEAM-10874?focusedWorklogId=481674&page=com.atlassian.jira.plugin.system.issuetabpanels:worklog-tabpanel#worklog-481674 ]
ASF GitHub Bot logged work on BEAM-10874:
-----------------------------------------
Author: ASF GitHub Bot
Created on: 10/Sep/20 20:04
Start Date: 10/Sep/20 20:04
Worklog Time Spent: 10m
Work Description: lostluck opened a new pull request #12816:
URL: https://github.com/apache/beam/pull/12816
Per https://pkg.go.dev/mod/google.golang.org/protobuf there's a v2 variant of generated protocol buffer code for Go. As it stands, technically the v1 variants are now implemented in terms of v2, except that the base interface is now protoreflect.Message, rather than proto.MessageV.
They are implemented differently, which prevents the existing beam code from "discovering" protocol buffer types on pipeline analysis. This PR resolves it.
Additionally, use the v2 marshaller/unmarshaller explicitly for user elements.
------------------------
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Issue Time Tracking
-------------------
Worklog Id: (was: 481674)
Remaining Estimate: 0h
Time Spent: 10m
> Support both Go versions of proto (v1 & v2) with proto coder.
> -------------------------------------------------------------
>
> Key: BEAM-10874
> URL: https://issues.apache.org/jira/browse/BEAM-10874
> Project: Beam
> Issue Type: Bug
> Components: sdk-go
> Reporter: Robert Burke
> Assignee: Robert Burke
> Priority: P3
> Time Spent: 10m
> Remaining Estimate: 0h
>
> Go recently changed how their protocol buffers are generated and introduced a new base interface (protoreflect.Message) as the defacto version of proto.Message.
>
> But this introduces incompatibilities since they are distinct interfaces.
>
> The solution is quick: register coders for both protoV1 and protoV2 message interfaces which should sort out the problem.
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