Kafka connect, how to expose kafka connector status ?

[KoushikMaharaj]

I want to capture connector status unfortunately I am unable to capture. Following rule pattern and jconsole screen shot

• pattern: 'kafka.connect<type=connector-metrics,connector=BigQuerySinkConnector><>status'
  name: 'kafka_connect_connector_status'
  value: "0.0 if value == 'RUNNING' else 1.0 if value == 'FAILED' else 2.0 if value == 'PAUSED' else 3.0 if value== 'STOPPED' else 4.0"
  labels:
  connector: 'BigQuerySinkConnector'

• pattern: "kafka.connect<type=connector-metrics, connector=([^>]+)><>connector-type"
  name: "kafka_connect_connector_type"
  labels:
  connector: "$1"

[dhoard]

Based on the example at https://github.com/prometheus/jmx_exporter/blob/main/examples/kafka-connect.yml ...

  #kafka.connect:type=connector-task-metrics,connector="{connector}",task="{task}<> status"
  - pattern: 'kafka.connect<type=connector-task-metrics, connector=(.+), task=(.+)><>status: ([a-z-]+)'
    name: kafka_connect_connector_status
    value: 1
    labels:
      connector: "$1"
      task: "$2"
      status: "$3"
    help: "Kafka Connect JMX Connector status"
    type: GAUGE

A value of 0.0 if value == 'RUNNING' else 1.0 if value == 'FAILED' else 2.0 if value == 'PAUSED' else 3.0 if value== 'STOPPED' else 4.0" won't work.

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https://prometheus.github.io/jmx_exporter/1.5.0/http-mode/rules/

value : Value for the metric. Static values and capture groups from the pattern can be used. If not specified the scraped mBean value will be used.