add server reflection to Probes list

internal/api/grpc/probes.go

@@ -1,5 +1,12 @@
 package grpc
 
+import (
+	"path"
+
+	"google.golang.org/grpc"
+	"google.golang.org/grpc/reflection/grpc_reflection_v1alpha"
+)
+
 const (
 	Healthz    = "/Healthz"
 	Readiness  = "/Ready"
@@ -9,3 +16,18 @@ const (
 var (
 	Probes = []string{Healthz, Readiness, Validation}
 )
+
+func init() {
+	Probes = append(Probes, AllPaths(grpc_reflection_v1alpha.ServerReflection_ServiceDesc)...)
+}
+
+func AllPaths(sd grpc.ServiceDesc) []string {
+	paths := make([]string, 0, len(sd.Methods)+len(sd.Streams))
+	for _, method := range sd.Methods {
+		paths = append(paths, path.Join("/", sd.ServiceName, method.MethodName))
+	}
+	for _, stream := range sd.Streams {
+		paths = append(paths, path.Join("/", sd.ServiceName, stream.StreamName))
+	}
+	return paths
+}