Datadog Exporter - Accept attributes on scopeMetrics as tags.

[brettplarson]

Component(s)

exporter/datadog

Describe the issue you're reporting

We are sending an OTLP Json payload that looks like the following as a minimal example:

{
    "resourceMetrics": [
        {
            "resource": {
                "attributes": [
                    {
                        "key": "service",
                        "value": {
                            "stringValue": "cool_app"
                        }
                    },
                    {
                        "key": "env",
                        "value": {
                            "stringValue": "prod"
                        }
                    },
                    {
                        "key": "version",
                        "value": {
                            "stringValue": "OtelMetrics_SW.1"
                        }
                    }
                ]
            },
            "scopeMetrics": [
                {
                    "metrics": [
                        {
                            "name": "message_count",
                            "sum": {
                                "aggregationTemporality": 2,
                                "dataPoints": [
                                    {
                                        "asDouble": 0,
                                        "startTimeUnixNano": "1738678910381833677",
                                        "timeUnixNano": "1738678930381833747"
                                    }
                                ],
                                "isMonotonic": true
                            }
                        },
                        {
                            "name": "bytes",
                            "sum": {
                                "aggregationTemporality": 2,
                                "dataPoints": [
                                    {
                                        "asDouble": 0,
                                        "startTimeUnixNano": "1738678910381833677",
                                        "timeUnixNano": "1738678930381833747"
                                    }
                                ],
                                "isMonotonic": true
                            }
                        },
                        {
                            "gauge": {
                                "dataPoints": [
                                    {
                                        "asDouble": 0,
                                        "attributes": [
                                            {
                                                "key": "percentile",
                                                "value": {
                                                    "stringValue": ""
                                                }
                                            }
                                        ],
                                        "timeUnixNano": "1738678930381833747"
                                    },
                                    {
                                        "asDouble": 0,
                                        "attributes": [
                                            {
                                                "key": "percentile",
                                                "value": {
                                                    "stringValue": ""
                                                }
                                            }
                                        ],
                                        "timeUnixNano": "1738678930381833747"
                                    },
                                ]
                            },
                        }
                    ],
                    "scope": {
                        "attributes": [
                            {
                                "key": "component",
                                "value": {
                                    "stringValue": "Utc_converter"
                                }
                            },
                            {
                                "key": "threadName",
                                "value": {
                                    "stringValue": "cool_thread"
                                }
                            }
                        ]
                    }
                },
            ]
        }
    ]
}

However the attributes scoped to the metric are just ignored, we'd like to use them as tags so that we can group them into a single scope with common tags as well as keep payload sizes small.

[github-actions]

Pinging code owners:

• exporter/datadog: @mx-psi @dineshg13 @liustanley @songy23 @mackjmr @ankitpatel96 @jade-guiton-dd @IbraheemA

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

[mx-psi]

👋 You may want to set metrics::instrumentation_scope_metadata_as_tags to true:

opentelemetry-collector-contrib/exporter/datadogexporter/examples/collector.yaml

Lines 269 to 272 in 7f581ca

	## @param instrumentation_scope_metadata_as_tags - string - optional - default: false
	## Set to true to add metadata about the instrumentation scope that created a metric.
	#
	# instrumentation_scope_metadata_as_tags: false

Could you let us know if this solves your issue?

[brettplarson]

Thanks @mx-psi - I forgot to mention, I did try this, but after I just see these two tags that show n/a.
instrumentation_scope:n/a / instrumentation_scope_version:n/a

[brettplarson]

I also opened a DD support case of #2019134

[mx-psi]

Ah, right, you are not using the scope name or version, you are using scope attributes. I can confirm this is not supported at the moment.