Add the ability to drop all datapoints except a specific one.

[ceastman-r7]

Component(s)

processor/metricstransform

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

I am trying to drop all datapoints except where destination_service_name == BlackHoleCluster

the label destination_service_name can have an infinite amount of values, I just need to only retain the datapoints where it equals BlackHoleCluster``

Describe the solution you'd like

from this example: https://github.com/open-telemetry/opentelemetry-collector-contrib/tree/main/processor/metricstransformprocessor#delete-by-label-value

something like:

# deletes all data points with the label value 'idle' of the label 'state'
include: system.cpu.usage
action: update
operations:
  - action: delete_label_value
    label: destination_service_name
    label_not_value: BlackHoleCluster

Describe alternatives you've considered

No response

Additional context

No response

[github-actions]

Pinging code owners:

• processor/metricstransform: @dmitryax

See Adding Labels via Comments if you do not have permissions to add labels yourself.

[strawgate]

FYI I believe the metrics/logs/etc transform processors are being replaced with the OTTL-based "transform processor"

Have you considered trying the filterprocessor with the context set to datapoint?
https://github.com/open-telemetry/opentelemetry-collector-contrib/tree/main/processor/filterprocessor

processors:
  filter/ottl:
    error_mode: ignore
    metrics:
      datapoint:
          - 'attributes["destination_service_name"] != "blackhole"'

[github-actions]

Pinging code owners for processor/filter: @TylerHelmuth @boostchicken. See Adding Labels via Comments if you do not have permissions to add labels yourself.

[TylerHelmuth]

@strawgate is correct. Closing this since an answer has been provided.

[ceastman-r7]

Thank you, I will try that.