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Add metric metadata to message (#102) #112

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@arunsudhakar arunsudhakar commented Mar 15, 2023

This PR allows the inclusion of the Metric metadata into the topic and resolves #102 . This is controlled by 2 ENV variables

  • PROM_METADATA_ENDPOINT: defines prometheus metric metadata endpoint , not set by default and hence metadata wont be included.
  • INLCUDED_METADATA: specifies which attributes to be exported. The attributes should be comma separated. Permitted values are type, help and unit. Only type is included by default

@@ -38,6 +42,8 @@ There is a docker image `telefonica/prometheus-kafka-adapter:1.8.0` [available o

Prometheus-kafka-adapter listens for metrics coming from Prometheus and sends them to Kafka. This behaviour can be configured with the following environment variables:

- `PROM_METADATA_ENDPOINT`: defines prometheus metric metadata endpoint , not set by default and hence metadata wont be included.
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What if we just made this a boolean instead (e.g. ENABLE_PROM_METADATA)? Requiring the endpoint may be a bit confusing.

"github.com/sirupsen/logrus"
)

func GetAllMetricMetadata(promMetaDataEndPoint string, metricsList map[string]MetricMetadata) {
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This feels pretty hacky. Is there any way we could instead interface with the metrics object in memory instead of making an internal call?

@@ -6,21 +6,25 @@ Prometheus-kafka-adapter is a service which receives [Prometheus](https://github

## output

It is able to write JSON or Avro-JSON messages in a kafka topic, depending on the `SERIALIZATION_FORMAT` configuration variable.
It is able to write JSON or Avro-JSON messages in a kafka topic, depending on the `SERIALIZATION_FORMAT` configuration variable.
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Clean up extra spaces, please.

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Prometheus Metric type missing in the serialized JSON to Kafka
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