Metrics routed using routing connector with datapoint context are missing AggregationTemporality

[benzaita]

Component(s)

connector/routing

What happened?

Description

When routing using a datapoint context, the routed Metric is missing IsMonotonic and AggregationTemporality (when routing using the default context, it works fine).

Trying to forward them to a Datadog Exporter fails due to that.

Steps to Reproduce

Config:

receivers:
  otlp:
    protocols:
      http:
        endpoint: 0.0.0.0:4318

exporters:
  debug:
    verbosity: detailed

connectors:
  routing/stage:
    match_once: true
    table:

    # outbound metrics have undefined/default IsMonotonic and AggregationTemporality
    - condition: 'attributes["stage"] == "production"'
      context: datapoint
      pipelines: [metrics/prod]

    # outbound metrics have proper IsMonotonic and AggregationTemporality
    # - statement: 'route()'
    #   pipelines: [metrics/prod]

service:
  telemetry:
    logs:
      level: debug
  pipelines:
    metrics/in:
      receivers: [otlp]
      exporters: [routing/stage]
    metrics/prod:
      receivers: [routing/stage]
      exporters: [debug]

Expected Result

Expecting to see this in logs:

Metric #7
Descriptor:
      -> Name: app_user_logins_total
      -> Description: The number of users login into the Klarna app.
      -> Unit: 
      -> DataType: Sum
      -> IsMonotonic: true
      -> AggregationTemporality: Cumulative

Actual Result

Seeing this in logs:

Metric #7
Descriptor:
      -> Name: app_user_logins_total
      -> Description: The number of users login into the Klarna app.
      -> Unit: 
      -> DataType: Sum
      -> IsMonotonic: false
      -> AggregationTemporality: Unspecified

When forwarding this to a Datadog Exporter we get:

2025-01-16T10:39:36.757Z debug   [email protected]/metrics_translator.go:854       Unknown or unsupported aggregation temporality  {"kind": "exporter", "data_type": "metrics", "name": "datadog/exporter", "component": "metrics translator", "metric name": "app_user_logins_total", "aggregation temporality": "Unspecified"}

Collector version

0.117.0

Environment information

Environment

OS: macOS 14.7.2
Compiler(if manually compiled): N/A

OpenTelemetry Collector configuration

Log output

Additional context

No response

[github-actions]

Pinging code owners:

• connector/routing: @jpkrohling @mwear

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[benzaita]

This seems to be because this code is not setting these values