Adapter Receiver

The Adapter Receiver receives Telegraf metrics, filters unsupported value and converts them to corresponding OTEL metrics before passing down to OTEL processors and exporters. This is intended to be used when Telegraf input plugins are still intact.

Architectural

Data Conversion

Convert Telegraf Metrics with the following type (Counter, Gauge, or Untyped)

Metric {
    Name
    TagList (each tag with key, value)
    FieldList (each field with key, value) 
    Time
    Type (Counter, Gauge, Summary, Histogram, or Untyped)
}

to OpenTelemetry Int64DataPoints, DoubleDataPoints metrics datapoints

Metrics {
    ResourceMetrics: list of {
      Resource: {
        Attributes: map of {key: value}
      }
      InstrumentationScopeMetrics: list of {
        InstrumentationLibrary: {Name, Version}
        Metrics: list of {
          Name
          Description
          Unit
          DataType (None, Gauge, Sum, Histogram, Summary)
          depending on DataType, e.g. Gauge: {
            DataPoints: list of {
              Attributes: map of {key: value}
              Timestamp
              Type (None, Int, Double)
              Val
            }
          }
        }
      }
    }
  }

Receiver Configuration

The following receiver configuration parameters are supported.