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Consider adding support for Read #432

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Tracked by #449
thomas11 opened this issue May 14, 2024 · 4 comments
Open
Tracked by #449

Consider adding support for Read #432

thomas11 opened this issue May 14, 2024 · 4 comments
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kind/enhancement Improvements or new features

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@thomas11
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thomas11 commented May 14, 2024 •
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The Read operation is defined in the Pulumi resource model.

The Read method is responsible for reading the current inputs and state Objects for a resource. Read may be called during a refresh or import of a managed resource or during a preview or update for an external resource.

Allowing users to define a specific command to run on Read could open up new use cases. If you have such a case, please comment below!

This issue is a follow-up from #20.
@thomas11 thomas11 added the kind/enhancement Improvements or new features label May 14, 2024
@thomas11 thomas11 mentioned this issue May 14, 2024
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@lukehoban lukehoban mentioned this issue May 18, 2024
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@danielrbradley
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Perhaps this should be modelled as "refresh"

@stooj stooj mentioned this issue Jul 11, 2024
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thomas11 pushed a commit that referenced this issue Jul 15, 2024
@stooj
fix(docs): Update README to include implemented update command (#492)
8928e7f 
The README points to #20
and says `Update` isn't implemented.

[Diff](#433) and
[Read](#432) are still
not done, but [Update is
implemented](https://github.com/pulumi/pulumi-command/blob/e7e39fd913708c3e5255d8399c87a736553fec43/sdk/python/pulumi_command/remote/command.py#L196)

The example code could be updated (hah!) to include an `update` (maybe
with Luke's `color`/`description` example), but this PR just removes
information that misled me.
@vnghia
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vnghia commented Jan 23, 2025 •
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Hi do we have any update regarding this issue ? A lot of my resources depend on the output of one command provider and they are deleted and re-created everytime I run pulumi up even though nothing has changed :(

If you could give some pointers, I would love to give this feature a try by myself. Pulumi is perfect for me with this feature :D

@thomas11
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Hi @vnghia, I'm not quite sure how a custom Read would solve your problem. Could you elaborate? Unless pulumi up is run with --refresh, it won't call Read.

You might consider changing your command to modify the output, for instance, by piping it to another program.

You could also use ignoreChanges if the output doesn't matter.

@vnghia
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vnghia commented Jan 24, 2025

I see. Probably something off in my configuration :/ Thank you very much!

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@thomas11 @danielrbradley @vnghia