Prometheus exporter usage

[yeplaa]

I use currently the fluent component with fluent-plugin-prometheus plugin to deploy the prometheus exporter.
I generate my metrics by integrating the labels Kubernetes (retrieving from fluent-plugin-kubernetes plugin) Also i use the internal grep plugin to filter my messages. Bellow an extract of my configuration :

 <source>
      @type forward
      @log_level debug

      port 24224
      bind 0.0.0.0
    </source>

    
    
    # Cf https://docs.fluentd.org/filter/grep
    <filter {{ .Release.Namespace }}.kubernetes.var.log.containers.**>
      @type grep
      <regexp>
        key $.kubernetes.container_name
        pattern /^elasticsearch$/
      </regexp>
      
      <regexp>
        key $.kubernetes.labels.productname
        pattern /^elasticsearch$/
      </regexp>

      <regexp>
        key $.kubernetes.labels.domain
        pattern /^dbms$/
      </regexp>

      <regexp>
        # log beginning : [2018-07-04T13:34:26,108][ERROR]
        key $.message
        pattern /^\[[\d]{4}-[\d]{2}-[\d]{2}T[\d]{2}:[\d]{2}:[\d]{2},[\d].*\[ERROR\].*$/
      </regexp>

    </filter>


    <filter {{ .Release.Namespace }}.kubernetes.var.log.containers.**>
      @type prometheus
      <metric>
        name All_elasticsearch_counter
        type counter
        desc The total number of foo in message.
        <labels>
          container $.kubernetes.container_name
          namespace_name $.kubernetes.namespace_name
          pod_name $.kubernetes.pod_name
          domain $.kubernetes.labels.domain
          productname $.kubernetes.labels.productname
          setname $.kubernetes.labels.setname
        </labels>
      </metric> 
    </filter>


    # Exposition metrics promtheus / exporter
    <source>
      @type prometheus
      bind 0.0.0.0
      port 24231
      metrics_path /metrics
    </source>

Do you know if it's possible to perform the same feature with fluent-bit (and its Metrics plugins)?
Reading the doc I'm not sure

Thanks