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Accept promql.Engine interface in v1.NewAPI() (#10050)

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Instead of requesting a concrete type. This would allow other
implementations that use the same API to replace or wrap the engine
implementation while maintaining the same API.

Signed-off-by: Oleg Zaytsev <mail@olegzaytsev.com>
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Oleg Zaytsev 2021-12-21 11:22:40 +01:00 committed by GitHub
parent 2737abf221
commit 3c400d443d
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1 changed files with 9 additions and 2 deletions
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11
web/api/v1/api.go
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@ -155,11 +155,18 @@ type TSDBAdminStats interface {
WALReplayStatus() (tsdb.WALReplayStatus, error)
}
// QueryEngine defines the interface for the *promql.Engine, so it can be replaced, wrapped or mocked.
type QueryEngine interface {
SetQueryLogger(l promql.QueryLogger)
NewInstantQuery(q storage.Queryable, qs string, ts time.Time) (promql.Query, error)
NewRangeQuery(q storage.Queryable, qs string, start, end time.Time, interval time.Duration) (promql.Query, error)
}
// API can register a set of endpoints in a router and handle
// them using the provided storage and query engine.
type API struct {
Queryable storage.SampleAndChunkQueryable
QueryEngine *promql.Engine
QueryEngine QueryEngine
ExemplarQueryable storage.ExemplarQueryable
targetRetriever func(context.Context) TargetRetriever
@ -192,7 +199,7 @@ func init() {
// NewAPI returns an initialized API type.
func NewAPI(
qe *promql.Engine,
qe QueryEngine,
q storage.SampleAndChunkQueryable,
ap storage.Appendable,
eq storage.ExemplarQueryable,