Add service name as attribute

[dhilgarth]

Component(s)

receiver/dockerstats

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

In Docker Swarm, the unit of aggregation I often care about is the total usage of a service per host.
This is currently not possible.

Describe the solution you'd like

Add a new attribute for the service name

Describe alternatives you've considered

• grouping by container_image_name, host_name (from OTEL_RESOURCE_ATTRIBUTES): Close, but I could have different services using the same image and also, I am looking for the service name, so I would need to deduct the service name from the image name
• Derive from container_name, e.g. via label_replace in PromQL: Works, but is quite a handful which I would need to use in each query instead of simply selecting the label. For reference: label_replace(container_memory_usage_total, "container_service_name", "$1", "container_name", "^([^.]+)\\..*")

Additional context

No response

[github-actions]

Pinging code owners:

• receiver/dockerstats: @rmfitzpatrick @jamesmoessis

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

[jamesmoessis]

@dhilgarth have you considered using the resourceprocessor to add the service name attribute?

[dhilgarth]

@jamesmoessis Thanks, this works beautifully

receivers:
  ...
  docker_stats:
    ...

processors:
  ...
  resource:
    attributes:
      - key: container.name
        pattern: ^(?P<container_service_name>[^.]+)\..*
        action: extract

exporters:
  ...

service:
  pipelines:
    ...
    metrics/generic:
      receivers: [ docker_stats, ... ]
      processors: [ resource, ... ]
      exporters: [ ... ]