phase1 opa pdp changes

For details on scope and implementation, please check.
https://lf-onap.atlassian.net/wiki/spaces/DW/pages/51150925/OPA+PDP
Code Coverage Total: 70.8%

Issue-ID: POLICY-5156
Change-Id: Ied07ee1596e9f447183fb715baaa68c704a9fe99
Signed-off-by: gururajarao79 <gb00566633@techmahindra.com>

2 files changed, 89 insertions, 0 deletions

diff --git a/pkg/utils/utils.go b/pkg/utils/utils.go
new file mode 100644
index 0000000..c2cb591
--- /dev/null
+++ b/pkg/utils/utils.go
@@ -0,0 +1,30 @@
+// -
+//   ========================LICENSE_START=================================
+//   Copyright (C) 2024: Deutsche Telecom
+//
+//   Licensed under the Apache License, Version 2.0 (the "License");
+//   you may not use this file except in compliance with the License.
+//   You may obtain a copy of the License at
+//
+//        http://www.apache.org/licenses/LICENSE-2.0
+//
+//   Unless required by applicable law or agreed to in writing, software
+//   distributed under the License is distributed on an "AS IS" BASIS,
+//   WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+//   See the License for the specific language governing permissions and
+//   limitations under the License.
+//   ========================LICENSE_END===================================
+
+// Package utils provides common  functionalities
+
+package utils
+
+import (
+	"github.com/google/uuid"
+)
+
+// validates if the given request is in valid uuid form
+func IsValidUUID(u string) bool {
+	_, err := uuid.Parse(u)
+	return err == nil
+}
diff --git a/pkg/utils/utils_test.go b/pkg/utils/utils_test.go
new file mode 100644
index 0000000..b70fa2b
--- /dev/null
+++ b/pkg/utils/utils_test.go
@@ -0,0 +1,59 @@
+// -
+//   ========================LICENSE_START=================================
+//   Copyright (C) 2024: Deutsche Telecom
+//
+//   Licensed under the Apache License, Version 2.0 (the "License");
+//   you may not use this file except in compliance with the License.
+//   You may obtain a copy of the License at
+//
+//        http://www.apache.org/licenses/LICENSE-2.0
+//
+//   Unless required by applicable law or agreed to in writing, software
+//   distributed under the License is distributed on an "AS IS" BASIS,
+//   WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+//   See the License for the specific language governing permissions and
+//   limitations under the License.
+//   ========================LICENSE_END===================================
+
+package utils
+
+import (
+	"github.com/google/uuid"
+	"testing"
+)
+
+// Positive Test Case: Valid UUIDs
+func TestIsValidUUIDPositive(t *testing.T) {
+	// Define valid UUID strings
+	validUUIDs := []string{
+		"123e4567-e89b-12d3-a456-426614174000", // Standard UUID
+		uuid.New().String(),                    // Dynamically generated UUID
+	}
+
+	for _, u := range validUUIDs {
+		t.Run("Valid UUID", func(t *testing.T) {
+			if !IsValidUUID(u) {
+				t.Errorf("Expected valid UUID, but got invalid for %s", u)
+			}
+		})
+	}
+}
+
+// Negative Test Case: Invalid UUIDs
+func TestIsValidUUIDNegative(t *testing.T) {
+	// Define invalid UUID strings
+	invalidUUIDs := []string{
+		"123e4567-e89b-12d3-a456-42661417400",  // Invalid: missing character at the end
+		"invalid-uuid-format",                  // Invalid: incorrect format
+		"123e4567-e89b-12d3-a456-42661417400x", // Invalid: contains extra non-hex character
+		" ",                                    // Invalid: empty string
+	}
+
+	for _, u := range invalidUUIDs {
+		t.Run("Invalid UUID", func(t *testing.T) {
+			if IsValidUUID(u) {
+				t.Errorf("Expected invalid UUID, but got valid for %s", u)
+			}
+		})
+	}
+}