NewEngine creates a new promql.Engine for cortex.

NewQueryable creates a new Queryable for cortex.

A ChunkQuerier is a Querier that fetches samples from a ChunkStore.

DummyStorage creates a local.Storage compatible struct from a Queryable, such that it can be used with web.NewAPI.

A MergeQuerier is a promql.Querier that merges the results of multiple cortex.Queriers for the same query.

Queryable is an adapter between Prometheus' Queryable and Querier.

ChunkStore is the interface we need to get chunks.

A Querier allows querying all samples in a given time range that match a set of label matchers.