[Feature]attributesprocessor supports keeping only the matching fields

[tttoad]

Component(s)

processor/attributes

Is your feature request related to a problem? Please describe.

I want to keep only some of the fields in the attribute, such as those starting with ‘abc’ or ‘def’.

Describe the solution you'd like

attributesprocessor supports reserved actions, reserved fields by regular matching.

Describe alternatives you've considered

No response

Additional context

No response

[github-actions]

Pinging code owners:

• processor/attributes: @boostchicken

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[VihasMakwana]

@tttoad have you considered pattern? If possible, can you share your config and use case?

[tttoad]

@tttoad have you considered pattern? If possible, can you share your config and use case?

You mean RegexPattern ? regexp does not support syntax like ^(?<!abc).
attributes{ "db":"" ,"any":"" .... ,"abc":"*"} , I just want to keep abc.

[VihasMakwana]

@tttoad wouldn't something like following work, using include feature?

attributes:
   include:
     match_type: strict
     attributes:
       - key: abc

[tttoad]

@tttoad wouldn't something like following work, using include feature?

attributes:
   include:
     match_type: strict
     attributes:
       - key: abc

@VihasMakwana Error: attributes: missing required field "actions".
If I understand correctly, include just selects the Span to be processed.

[VihasMakwana]

Oh! I misunderstood the configs.

Anyway, can you take a look at https://github.com/codeboten/opentelemetry-collector-contrib/tree/main/processor/transformprocessor? It has keep_keys.

[VihasMakwana]

@tttoad does that help resolve the issue you were having?

[tttoad]

@tttoad does that help resolve the issue you were having?

Yes, it can work. Thank you.