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https://issues.apache.org/jira/browse/BEAM-12297?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17359349#comment-17359349
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Zachary Houfek commented on BEAM-12297:
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Taking over, since I've already got something similar to this working in
Dataflow Templates.[1] My intent is to add support for both Protobuf's
Descriptor, similar to Dataflow Templates, and Beam's ProtoDomain.
[1]
https://github.com/GoogleCloudPlatform/DataflowTemplates/blob/master/v2/pubsub-binary-to-bigquery/src/main/java/com/google/cloud/teleport/v2/templates/PubsubProtoToBigQuery.java
> PubsubIO support for reading protos from schema
> -----------------------------------------------
>
> Key: BEAM-12297
> URL: https://issues.apache.org/jira/browse/BEAM-12297
> Project: Beam
> Issue Type: New Feature
> Components: io-java-gcp
> Reporter: Zachary Houfek
> Assignee: Zachary Houfek
> Priority: P2
>
> We're trying to add a Dataflow template for Pubsub -> BigQuery where the
> Pubsub topic contains serialized proto data. This is similar to our existing
> template for Pubsub -> BigQuery using Avro.
> However, it seems the PubsubIO currently only supports protos where the class
> is known.[1] We'll need something similar to the generic Avro reader[2].
>
> [1]
> [https://github.com/apache/beam/blob/243128a8fc52798e1b58b0cf1a271d95ee7aa241/sdks/java/io/google-cloud-platform/src/main/java/org/apache/beam/sdk/io/gcp/pubsub/PubsubIO.java#L478]
> [2]
> [https://github.com/apache/beam/blob/243128a8fc52798e1b58b0cf1a271d95ee7aa241/sdks/java/io/google-cloud-platform/src/main/java/org/apache/beam/sdk/io/gcp/pubsub/PubsubIO.java#L515]
>
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