Google Cloud API，用于将自定义域映射到应用

Is there an sort of API to automatically map custom domains to app. In a multi tenant system, app domain mapping requires that an explicit mapping is created through App Engine settings.

Is there any way of doing this programmatically? Cloud DNS API of sort for App Engine app domain mapping.

Meanwhile the desired feature has been implemented in beta stage, and there is now indeed a way of doing this programmatically, and you can now manage both your custom domains and SSL certificates using the new beta features of the Admin API and gcloud command-line tool. More detail can be gathered from the "App Engine users, now you can configure custom domains from the API or CLI" documentation page.