Internal Metrics transforms question

[satellite-no]

Hi All!

Im trying to utilize the internal_metrics source and send that externally but it appears it does not behave similar to other sources when using transforms. Like I pipe internal_metrics > default_transform (adds field) > console that field is not there. Whne I use the exact same transforms on the demo_log source it works as execpted. Any guidance?

Test config for replicate.

sources:
  demo_log:
    type: demo_logs
    format: apache_common

  internal_metrics:
    type: "internal_metrics"


transforms:
  default_transform:
    type: remap
    inputs:
      - "internal_metrics"
    source: >-
      .app_id = "100000000"

sinks:
  console:
    type: console
    inputs:
      - "default_*"
    target: stdout
    encoding:
      codec: json

[jszwedko]

Hi @satellite-no !

Unlike logs, metrics are structured events that have specific fields available on them so you cannot set arbitrary fields. You can see the fields available on metrics here: https://vector.dev/docs/about/under-the-hood/architecture/data-model/metric/ (e.g. name, namespace, tags, etc.)

[pront]

Hi @satellite-no !

Unlike logs, metrics are structured events that have specific fields available on them so you cannot set arbitrary fields. You can see the fields available on metrics here: https://vector.dev/docs/about/under-the-hood/architecture/data-model/metric/ (e.g. name, namespace, tags, etc.)

^ 👍

You can also override the values like .name, plus you can add custom tags e.g. .tags.foo = 1.

[satellite-no]

Ah I see, my misunderstanding! Thank you for the quick response!