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https://issues.apache.org/jira/browse/BEAM-3262?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Tobi Vollebregt updated BEAM-3262:
----------------------------------
    Description: 
Hi,

I am prototyping a dataflow job that reads from GPG encrypted files. I got this 
working, but had to jump through some hoops to supply a new "compression" 
format to TextIO: I basically had to copy a good part of TextIO.Read only to 
add a {{withDecompressingChannelFactory}} method similar to 
{{withWritableByteChannelFactory}} in TextIO.Write.

Would it be possible to add a method {{withDecompressingChannelFactory}} or 
{{withReadableByteChannelFactory}} to TextIO.Read to allow users to plug in 
custom decompression/decryption code?

  was:
Hi,

I am prototyping a dataflow job that reads from GPG encrypted files. I got this 
working, but had to jump through some hoops to supply a new "compression" 
format to TextIO: I basically had to copy a good part of TextIO.Read only to 
add a {{public Read withDecompressingChannelFactory(DecompressingChannelFactory 
decompressingChannelFactory)}} method similar to {{public TypedWrite<UserT, 
DestinationT> withWritableByteChannelFactory(WritableByteChannelFactory 
writableByteChannelFactory)}} in TextIO.Write.

Would it be possible to add a method {{withDecompressingChannelFactory}} or 
{{withReadableByteChannelFactory}} to TextIO.Read to allow users to plug in 
custom decompression/decryption code?


> Provide a withReadableByteChannelFactory on TextIO.Read
> -------------------------------------------------------
>
>                 Key: BEAM-3262
>                 URL: https://issues.apache.org/jira/browse/BEAM-3262
>             Project: Beam
>          Issue Type: Improvement
>          Components: sdk-java-core
>            Reporter: Tobi Vollebregt
>            Assignee: Kenneth Knowles
>            Priority: Minor
>
> Hi,
> I am prototyping a dataflow job that reads from GPG encrypted files. I got 
> this working, but had to jump through some hoops to supply a new 
> "compression" format to TextIO: I basically had to copy a good part of 
> TextIO.Read only to add a {{withDecompressingChannelFactory}} method similar 
> to {{withWritableByteChannelFactory}} in TextIO.Write.
> Would it be possible to add a method {{withDecompressingChannelFactory}} or 
> {{withReadableByteChannelFactory}} to TextIO.Read to allow users to plug in 
> custom decompression/decryption code?



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