Consumer decorates an existing consumer with tracing and metering.

NewConsumerMetrics instantiates the producer metrics.

NewProducer decorates an existing publisher with tracing and metering.

NewPublisherMetrics instantiates the producer metrics.

ConsumerMetrics holds the metrics that are recorded for consumers.

Producer wraps a publisher client to provider tracing and metering.

PublisherMetrics hold the metrics that are recorded for producers.