Fix for desired_auto_created_endpoints incorrect update (#15720)

Author: NA2047

mmv1/products/memorystore/Instance.yaml

@@ -43,6 +43,7 @@ async:
 custom_code:
   encoder: 'templates/terraform/encoders/memorystore_instance.go.tmpl'
   decoder: 'templates/terraform/decoders/memorystore_instance.go.tmpl'
+  constants: 'templates/terraform/constants/memorystore_instance.go.tmpl'
 examples:
   - name: 'memorystore_instance_basic'
     primary_resource_id: 'instance-basic'
@@ -134,6 +135,7 @@ virtual_fields:
       endpoints connections. "
     type: Array
     immutable: true
+    diff_suppress_func: 'memorystoreInstancedDesiredAutoConnectionsDiffSuppress'
     conflicts:
       - desiredPscAutoConnections
     item_type:

mmv1/templates/terraform/constants/memorystore_instance.go.tmpl

@@ -0,0 +1,14 @@
+
+func memorystoreInstancedDesiredAutoConnectionsDiffSuppress(k, old, new string, d *schema.ResourceData) bool {
+	// Suppress diff wis to handle an edge case where desired_auto_created_endpoints in addtion to desired_psc_auto_connections are both set with same values
+	// this is due to how the api reponds when mode is set to CLUSTER_DISABLED and desired_psc_auto_connections is set.
+	log.Printf("[DEBUG] desired_auto_created_endpoints is set in state but not in config, supressing force new recreate")
+
+	oldAuto, newAuto := d.GetChange("desired_auto_created_endpoints")
+
+	if reflect.DeepEqual(oldAuto, newAuto) && !tpgresource.IsEmptyValue(reflect.ValueOf(oldAuto)) && !tpgresource.IsEmptyValue(reflect.ValueOf(newAuto)) {
+		return true
+	}
+
+	return false
+}