add ValidateRule for input validation (#101)

* add ValidateRule for input validation

* upd deps

Author: gertd

go.mod

@@ -13,7 +13,7 @@ require (
 	github.com/open-policy-agent/opa v1.15.2
 	github.com/opencontainers/image-spec v1.1.1
 	github.com/pkg/errors v0.9.1
-	github.com/rs/zerolog v1.35.0
+	github.com/rs/zerolog v1.35.1
 	github.com/sirupsen/logrus v1.9.4
 	github.com/stretchr/testify v1.11.1
 )
@@ -87,8 +87,8 @@ require (
 	golang.org/x/sys v0.43.0 // indirect
 	golang.org/x/text v0.36.0 // indirect
 	golang.org/x/time v0.15.0 // indirect
-	google.golang.org/genproto/googleapis/api v0.0.0-20260414002931-afd174a4e478 // indirect
-	google.golang.org/genproto/googleapis/rpc v0.0.0-20260414002931-afd174a4e478 // indirect
+	google.golang.org/genproto/googleapis/api v0.0.0-20260420184626-e10c466a9529 // indirect
+	google.golang.org/genproto/googleapis/rpc v0.0.0-20260420184626-e10c466a9529 // indirect
 	google.golang.org/grpc v1.80.0 // indirect
 	google.golang.org/protobuf v1.36.11 // indirect
 	gopkg.in/ini.v1 v1.67.1 // indirect

go.sum

@@ -144,8 +144,8 @@ github.com/rcrowley/go-metrics v0.0.0-20250401214520-65e299d6c5c9 h1:bsUq1dX0N8A
 github.com/rcrowley/go-metrics v0.0.0-20250401214520-65e299d6c5c9/go.mod h1:bCqnVzQkZxMG4s8nGwiZ5l3QUCyqpo9Y+/ZMZ9VjZe4=
 github.com/rogpeppe/go-internal v1.14.1 h1:UQB4HGPB6osV0SQTLymcB4TgvyWu6ZyliaW0tI/otEQ=
 github.com/rogpeppe/go-internal v1.14.1/go.mod h1:MaRKkUm5W0goXpeCfT7UZI6fk/L7L7so1lCWt35ZSgc=
-github.com/rs/zerolog v1.35.0 h1:VD0ykx7HMiMJytqINBsKcbLS+BJ4WYjz+05us+LRTdI=
-github.com/rs/zerolog v1.35.0/go.mod h1:EjML9kdfa/RMA7h/6z6pYmq1ykOuA8/mjWaEvGI+jcw=
+github.com/rs/zerolog v1.35.1 h1:m7xQeoiLIiV0BCEY4Hs+j2NG4Gp2o2KPKmhnnLiazKI=
+github.com/rs/zerolog v1.35.1/go.mod h1:EjML9kdfa/RMA7h/6z6pYmq1ykOuA8/mjWaEvGI+jcw=
 github.com/segmentio/asm v1.2.1 h1:DTNbBqs57ioxAD4PrArqftgypG4/qNpXoJx8TVXxPR0=
 github.com/segmentio/asm v1.2.1/go.mod h1:BqMnlJP91P8d+4ibuonYZw9mfnzI9HfxselHZr5aAcs=
 github.com/sergi/go-diff v1.4.0 h1:n/SP9D5ad1fORl+llWyN+D6qoUETXNZARKjyY2/KVCw=
@@ -246,10 +246,10 @@ golang.org/x/xerrors v0.0.0-20190717185122-a985d3407aa7/go.mod h1:I/5z698sn9Ka8T
 golang.org/x/xerrors v0.0.0-20191011141410-1b5146add898/go.mod h1:I/5z698sn9Ka8TeJc9MKroUUfqBBauWjQqLJ2OPfmY0=
 golang.org/x/xerrors v0.0.0-20191204190536-9bdfabe68543/go.mod h1:I/5z698sn9Ka8TeJc9MKroUUfqBBauWjQqLJ2OPfmY0=
 golang.org/x/xerrors v0.0.0-20200804184101-5ec99f83aff1/go.mod h1:I/5z698sn9Ka8TeJc9MKroUUfqBBauWjQqLJ2OPfmY0=
-google.golang.org/genproto/googleapis/api v0.0.0-20260414002931-afd174a4e478 h1:yQugLulqltosq0B/f8l4w9VryjV+N/5gcW0jQ3N8Qec=
-google.golang.org/genproto/googleapis/api v0.0.0-20260414002931-afd174a4e478/go.mod h1:C6ADNqOxbgdUUeRTU+LCHDPB9ttAMCTff6auwCVa4uc=
-google.golang.org/genproto/googleapis/rpc v0.0.0-20260414002931-afd174a4e478 h1:RmoJA1ujG+/lRGNfUnOMfhCy5EipVMyvUE+KNbPbTlw=
-google.golang.org/genproto/googleapis/rpc v0.0.0-20260414002931-afd174a4e478/go.mod h1:4Hqkh8ycfw05ld/3BWL7rJOSfebL2Q+DVDeRgYgxUU8=
+google.golang.org/genproto/googleapis/api v0.0.0-20260420184626-e10c466a9529 h1:zUWMZsvo/IJcD1t6MNCPO/azZTwz0TvwCBqr5aifoVY=
+google.golang.org/genproto/googleapis/api v0.0.0-20260420184626-e10c466a9529/go.mod h1:a5OGAgyRr4lqco7AG9hQM9Fwh0N2ZV4grR0eXFEsXQg=
+google.golang.org/genproto/googleapis/rpc v0.0.0-20260420184626-e10c466a9529 h1:XF8+t6QQiS0o9ArVan/HW8Q7cycNPGsJf6GA2nXxYAg=
+google.golang.org/genproto/googleapis/rpc v0.0.0-20260420184626-e10c466a9529/go.mod h1:4Hqkh8ycfw05ld/3BWL7rJOSfebL2Q+DVDeRgYgxUU8=
 google.golang.org/grpc v1.80.0 h1:Xr6m2WmWZLETvUNvIUmeD5OAagMw3FiKmMlTdViWsHM=
 google.golang.org/grpc v1.80.0/go.mod h1:ho/dLnxwi3EDJA4Zghp7k2Ec1+c2jqup0bFkw07bwF4=
 google.golang.org/protobuf v1.36.11 h1:fV6ZwhNocDyBLK0dj+fg8ektcVegBBuEolpbTQyBNVE=

query.go

@@ -2,6 +2,7 @@ package runtime
 
 import (
 	"context"
+	"fmt"
 
 	"github.com/google/uuid"
 	"github.com/open-policy-agent/opa/v1/ast"
@@ -69,6 +70,18 @@ func (r *Runtime) ValidateQuery(query string) (ast.Body, error) {
 	return body, nil
 }
 
+func (r *Runtime) ValidateRule(rule string) (bool, error) {
+	ref, err := ast.ParseRef(rule)
+	if err != nil {
+		return false, fmt.Errorf("invalid ref: %w", err)
+	}
+
+	compiler := r.pluginsManager.GetCompiler()
+	rules := compiler.GetRules(ref)
+
+	return len(rules) > 0, nil
+}
+
 func (r *Runtime) execQuery(
 	ctx context.Context,
 	txn storage.Transaction,