Initialize request version

internal/api/handler.go

@@ -853,25 +853,6 @@ func (h *requestHandler) doSelect(ctx context.Context, meta util.QueryMetaInto,
 	return err
 }
 
-func (r *requestHandler) effectiveVersion(version string) string {
-	switch version {
-	case "", Version2:
-		return r.version()
-	default:
-		return version
-	}
-}
-
-func (r *requestHandler) version() string {
-	if r.forceVersion != "" {
-		return r.forceVersion
-	}
-	if r.versionDice != nil {
-		return r.versionDice()
-	}
-	return Version3
-}
-
 func (h *Handler) getMetricNameWithNamespace(metricID int32) (string, error) {
 	if metricID == format.TagValueIDUnspecified {
 		return format.CodeTagValue(format.TagValueIDUnspecified), nil
@@ -1799,7 +1780,7 @@ func (h *requestHandler) handleGetMetricTagValues(ctx context.Context, req getMe
 		return nil, false, err
 	}
 
-	version := h.version()
+	version := h.version
 	err = validateQuery(metricMeta, version)
 	if err != nil {
 		return nil, false, err
@@ -2114,9 +2095,8 @@ func (h *requestHandler) queryBadges(ctx context.Context, req seriesRequest, met
 			user:       h.endpointStat.user,
 			priority:   h.endpointStat.priority,
 		},
-		debug:        h.debug,
-		forceVersion: h.forceVersion,
-		versionDice:  h.versionDice,
+		debug:   h.debug,
+		version: h.version,
 		query: promql.Query{
 			Start: req.from.Unix(),
 			End:   req.to.Unix(),
@@ -3384,18 +3364,16 @@ func pprofAccessAllowed(h *httpRequestHandler) bool {
 
 func (h *requestHandler) init(accessToken, version string) (err error) {
 	switch version {
-	case Version1, Version3:
-		h.requestVersion = version
-		h.forceVersion = version
-	case Version2, "":
-		h.requestVersion = Version2
-		h.versionDice = sync.OnceValue(func() string {
-			if rand.Float64() < h.Handler.Version3Prob.Load() {
-				return Version3
-			} else {
-				return Version2
-			}
-		})
+	case Version1:
+		h.version = Version1
+	case Version2:
+		if rand.Float64() < h.Handler.Version3Prob.Load() {
+			h.version = Version3
+		} else {
+			h.version = Version2
+		}
+	case Version3, "":
+		h.version = Version3
 	default:
 		return fmt.Errorf("invalid version: %q", version)
 	}

internal/api/http_router.go

@@ -27,14 +27,12 @@ type httpRoute struct {
 
 type requestHandler struct {
 	*Handler
-	accessInfo     accessInfo
-	endpointStat   endpointStat
-	trace          []string
-	debug          bool
-	requestVersion string
-	forceVersion   string
-	versionDice    func() string
-	query          promql.Query
+	accessInfo   accessInfo
+	endpointStat endpointStat
+	trace        []string
+	debug        bool
+	version      string
+	query        promql.Query
 }
 
 type httpRequestHandler struct {

internal/api/promql.go

@@ -37,7 +37,7 @@ func HandleInstantQuery(r *httpRequestHandler) {
 	q := promql.Query{
 		Expr: r.FormValue("query"),
 		Options: promql.Options{
-			Version:   r.version(),
+			Version:   r.version,
 			Mode:      data_model.InstantQuery,
 			Compat:    true,
 			TimeNow:   time.Now().Unix(),
@@ -73,7 +73,7 @@ func HandleRangeQuery(r *httpRequestHandler) {
 	q := promql.Query{
 		Expr: r.FormValue("query"),
 		Options: promql.Options{
-			Version:   r.version(),
+			Version:   r.version,
 			Compat:    true,
 			Namespace: r.Header.Get("X-StatsHouse-Namespace"),
 		},
@@ -140,7 +140,7 @@ func HandlePromSeriesQuery(r *httpRequestHandler) {
 					End:   end,
 					Expr:  expr,
 					Options: promql.Options{
-						Version:       r.version(),
+						Version:       r.version,
 						Version3Start: r.Version3Start.Load(),
 						Limit:         1000,
 						Mode:          data_model.TagsQuery,
@@ -215,7 +215,7 @@ func HandlePromLabelValuesQuery(r *httpRequestHandler) {
 							End:   end,
 							Expr:  expr,
 							Options: promql.Options{
-								Version:       r.version(),
+								Version:       r.version,
 								Version3Start: r.Version3Start.Load(),
 								Limit:         1000,
 								Mode:          data_model.TagsQuery,
@@ -459,7 +459,7 @@ func (h *requestHandler) QuerySeries(ctx context.Context, qry *promql.SeriesQuer
 		var tx int // time index
 		for _, lod := range lods {
 			pq := pointsQuery{
-				version:     h.requestVersion,
+				version:     h.version,
 				user:        h.accessInfo.user,
 				metricID:    qry.Metric.MetricID,
 				preKeyTagX:  format.TagIndex(qry.Metric.PreKeyTagID),

internal/api/request_parsers.go

@@ -486,7 +486,7 @@ func (r *httpRequestHandler) parseSeriesRequestS(maxTabs int) (res []seriesReque
 	// parse dependent paramemeters
 	var (
 		finalize = func(t *seriesRequestEx) error {
-			t.version = r.effectiveVersion(t.version)
+			t.version = r.version
 			numResultsMax := maxSeries
 			if len(t.shifts) != 0 {
 				numResultsMax /= len(t.shifts)

internal/api/rpc_handler.go

@@ -123,6 +123,9 @@ func (h *rpcRequestHandler) rawGetQueryPoint(ctx context.Context, hctx *rpc.Hand
 		err = fmt.Errorf("failed to deserialize statshouseApi.GetQueryPoint request: %w", err)
 		return err
 	}
+	if err = h.init(args.AccessToken, args.Query.Version); err != nil {
+		return err
+	}
 	qry := seriesRequestRPC{
 		filter:      args.Query.Filter,
 		function:    args.Query.Function,
@@ -349,7 +352,7 @@ func (h *rpcRequestHandler) rawReleaseChunks(ctx context.Context, hctx *rpc.Hand
 
 func (qry *seriesRequestRPC) toSeriesRequest(h *rpcRequestHandler) (seriesRequest, error) {
 	req := seriesRequest{
-		version:    h.version(),
+		version:    h.version,
 		numResults: int(qry.topN),
 		metricName: qry.metricName,
 		from:       time.Unix(qry.timeFrom, 0),

internal/api/table.go

@@ -60,7 +60,7 @@ func (h *requestHandler) getTableFromLODs(ctx context.Context, lods []data_model
 				continue
 			}
 			pq := pointsQuery{
-				version:     h.requestVersion,
+				version:     h.version,
 				user:        tableReqParams.user,
 				metricID:    metricMeta.MetricID,
 				preKeyTagX:  format.TagIndex(metricMeta.PreKeyTagID),

internal/api/tscache.go

@@ -164,6 +164,7 @@ func (g *tsCacheGroup) changeMaxSize(newSize int) {
 
 func (g *tsCacheGroup) Invalidate(lodLevel int64, times []int64) {
 	g.pointCaches[Version2][lodLevel].invalidate(times)
+	g.pointCaches[Version3][lodLevel].invalidate(times)
 }
 
 func (g *tsCacheGroup) Get(ctx context.Context, h *requestHandler, pq *pointsQuery, lod data_model.LOD, avoidCache bool) ([][]tsSelectRow, error) {