Use path-based get and set for property transform

provider/resources.go

@@ -1762,21 +1762,36 @@ func Provider() tfbridge.ProviderInfo {
 					// `port` is an object type in the current version of this provider.
 					// But in a previous version, it was nested as a MaxItemsOne item, `ports`
 					// For correct updating, we extract the array item and re-write its content to the new `port` object.
-					if template, ok := pMap["template"]; ok {
-						tplObj := template.ObjectValue()
-						if containers, ok := tplObj["containers"]; ok {
-							contAry := containers.ArrayValue()
-							for _, container := range contAry {
-								contObj := container.ObjectValue()
-								if ports, ok := contObj["ports"]; ok {
-									if ports.IsArray() {
-										pMap["template"].ObjectValue()["containers"].ArrayValue()[0].ObjectValue()["ports"] = ports.ArrayValue()[0]
-									}
-								}
+					pValue := resource.NewProperty(pMap)
+					containersPath := resource.PropertyPath{"template", "containers"}
+
+					if containers, ok := containersPath.Get(pValue); ok {
+						contAry := containers.ArrayValue()
+						for i, _ := range contAry {
+							portsPath := resource.PropertyPath{"template", "containers", i, "ports"}
+							if val, ok := portsPath.Get(pValue); ok && val.IsArray() {
+								portsPath.Set(pValue, val.ArrayValue()[0])
 							}
 						}
 					}
-					return pMap, nil
+					return pValue.ObjectValue(), nil
+
+					//if template, ok := pMap["template"]; ok {
+					//	tplObj := template.ObjectValue()
+					//	if containers, ok := tplObj["containers"]; ok {
+					//		contAry := containers.ArrayValue()
+					//		for i, container := range contAry {
+					//			contObj := container.ObjectValue()
+					//			if ports, ok := contObj["ports"]; ok {
+					//				if ports.IsArray() {
+					//					pMap["template"].ObjectValue()["containers"].ArrayValue()[i].ObjectValue()["ports"] = ports.ArrayValue()[0]
+					//				}
+					//			}
+					//		}
+					//	}
+					//}
+					//return pMap, nil
+
 				},
 			},