[#26] schema: Add resource name validation method

Close #26

Signed-off-by: Airat Arifullin <aarifullin@yadro.com>

schema/native/util/validation.go

@@ -0,0 +1,45 @@
+package util
+
+import (
+	"strings"
+
+	"git.frostfs.info/TrueCloudLab/policy-engine/schema/native"
+)
+
+var nativePatterns = []string{
+	native.ResourceFormatNamespaceObjects, native.ResourceFormatNamespaceContainerObjects,
+	native.ResourceFormatNamespaceContainerObject, native.ResourceFormatRootObjects,
+	native.ResourceFormatRootContainerObjects, native.ResourceFormatRootContainerObject,
+	native.ResourceFormatAllObjects, native.ResourceFormatNamespaceContainer,
+	native.ResourceFormatNamespaceContainers, native.ResourceFormatRootContainer,
+	native.ResourceFormatRootContainers, native.ResourceFormatAllContainers,
+}
+
+func match(resource, pattern string) bool {
+	rTokens := strings.Split(resource, "/")
+	pToken := strings.Split(pattern, "/")
+
+	if len(rTokens) != len(pToken) {
+		return false
+	}
+
+	for i := range rTokens {
+		if pToken[i] == "%s" {
+			continue
+		}
+		if pToken[i] != rTokens[i] {
+			return false
+		}
+	}
+
+	return true
+}
+
+func IsNativeResourceNameValid(resource string) bool {
+	for _, pattern := range nativePatterns {
+		if match(resource, pattern) {
+			return true
+		}
+	}
+	return false
+}