The OpenTelemetry extensions provides the ability to read metrics in OTLP format

To install the extension:

1. Extract and copy druid-opentelemetry-metrics-extensions into your Druid extensions directory.

2. Edit conf/_common/common.runtime.properties to add "druid-opentelemetry-metrics-extensions" to druid.extensions.loadList parameter. It should look like:

   druid.extensions.loadList=[..., "druid-opentelemetry-metrics-extensions"]
   

   There typically will be a few other extensions there too.

3. Restart your Druid cluster.

After enabling the extension in common.runtime.properties you can submit a new Supervisor config with source input format as:

"ioConfig": {
  "topic": "topic_name",
  "inputFormat": {
    "type": "opentelemetry-metrics-protobuf",
    "metricDimension": "name"
  }
  .
  .
  .
}

• SUM
• GAUGE

• INT_VALUE:
• BOOL_VALUE:
• DOUBLE_VALUE:
• STRING_VALUE: