NewPrometheusWrapper creates a new instance of PrometheusWrapper.

NewQuerier returns creates a new instance of Querier.

Config represents the configuration of a Querier object.

PrometheusWrapper implements the prometheus storage interface and provides us a way to query metrics from cassandra and feed those metrics into the prometheus query evaluator for reads.

PrometheusWrapperConfig represents the configuration of a PrometheusWrapperConfig object.

Querier serves as the layer that layer takes incoming user queries and returns the results fetched from the storage system.

SeriesIterator enables efficient access of sample values in a series.