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Data Dog Telemetry Integration

This guide is based on the official doc.

  1. Go to datadoghq.com
  2. Login to your account (make sure you choose right region for your account on login)
  3. Go to Organization Settings -> API Keys and copy the value of existing key or create a new one
  4. Integration with datadog requires OpenTelemetry Collector to be able to send data to. As an example we can use following config for the collector: 
    receivers:
      otlp:
        protocols:
          grpc:
            endpoint: 0.0.0.0:4317
    exporters:
      logging:
        verbosity: detailed
      datadog:
        traces:
          span_name_as_resource_name: true
        hostname: "otelcol"
        api:
          key: ${DATADOG_API_KEY}
          # make sure to specify right datadog site based on
          # https://docs.datadoghq.com/getting_started/site/
          site: us5.datadoghq.com
    processors:
      batch:
      datadog/processor:
      probabilistic_sampler:
        sampling_percentage: 30
    service:
      pipelines:
        traces:
          receivers: [otlp]
          processors: [batch, datadog/processor]
          exporters: [datadog]
        metrics:
          receivers: [otlp]
          processors: [batch]
          exporters: [datadog]
        logs:
          receivers: [otlp]
          processors: [batch]
          exporters: [datadog]
  5. Go to your GraphQL configuration and update it to: 
    schema
      @telemetry(
        export: {otlp: {url: "http://localhost:4317"}}
      ) {
      query: Query
    }
    1. Set the api key you've copied before to the environment variable named DATADOG_API_KEY and start Otel collector and tailcall with updated config

Now make some requests to running service and wait a little bit until Datadog proceeds the data. After that you can go to APM -> Traces, locate the span with name request and click on it. You should see something like on screenshot below:

datadog-trace

To see metrics now go to Metrics -> Explorer and search for metric you want to see. After updating the query you should see something like on example below:

datadog-metrics