Prometheus/Scopes: Update to use scopespec type from app (#84593)

pkg/promlib/models/scope.go

@@ -1,16 +1,24 @@
 package models
 
 import (
+	"fmt"
+
+	"github.com/grafana/grafana/pkg/apis/scope/v0alpha1"
 	"github.com/prometheus/prometheus/model/labels"
 	"github.com/prometheus/prometheus/promql/parser"
 )
 
-func ApplyQueryScope(rawExpr string, matchers []*labels.Matcher) (string, error) {
+func ApplyQueryScope(rawExpr string, scope v0alpha1.ScopeSpec) (string, error) {
 	expr, err := parser.ParseExpr(rawExpr)
 	if err != nil {
 		return "", err
 	}
 
+	matchers, err := scopeFiltersToMatchers(scope.Filters)
+	if err != nil {
+		return "", err
+	}
+
 	matcherNamesToIdx := make(map[string]int, len(matchers))
 	for i, matcher := range matchers {
 		if matcher == nil {
@@ -50,3 +58,28 @@ func ApplyQueryScope(rawExpr string, matchers []*labels.Matcher) (string, error)
 	})
 	return expr.String(), nil
 }
+
+func scopeFiltersToMatchers(filters []v0alpha1.ScopeFilter) ([]*labels.Matcher, error) {
+	matchers := make([]*labels.Matcher, 0, len(filters))
+	for _, f := range filters {
+		var mt labels.MatchType
+		switch f.Operator {
+		case "=":
+			mt = labels.MatchEqual
+		case "!=":
+			mt = labels.MatchNotEqual
+		case "=~":
+			mt = labels.MatchRegexp
+		case "!~":
+			mt = labels.MatchNotRegexp
+		default:
+			return nil, fmt.Errorf("unknown operator %q", f.Operator)
+		}
+		m, err := labels.NewMatcher(mt, f.Key, f.Value)
+		if err != nil {
+			return nil, err
+		}
+		matchers = append(matchers, m)
+	}
+	return matchers, nil
+}