When your application requests private data, the request must be authorized by an authenticated user who has access to that data.
Every request your application sends to the Google Cloud DNS API must include an authorization token. The token also identifies your application to Google.
About authorization protocols
Authorizing requests with OAuth 2.0
All requests to the Google Cloud DNS API must be authorized by an authenticated user.
The details of the authorization process, or "flow," for OAuth 2.0 vary somewhat depending on what kind of application you're writing. The following general process applies to all application types:
- When you create your application, you register it using the Google Cloud Platform Console. Google then provides information you'll need later, such as a client ID and a client secret.
- Activate the Google Cloud DNS API in the Google Cloud Platform Console. (If the API isn't listed in the GCP Console, then skip this step.)
- When your application needs access to user data, it asks Google for a particular scope of access.
- Google displays a consent screen to the user, asking them to authorize your application to request some of their data.
- If the user approves, then Google gives your application a short-lived access token.
- Your application requests user data, attaching the access token to the request.
- If Google determines that your request and the token are valid, it returns the requested data.
Some flows include additional steps, such as using refresh tokens to acquire new access tokens. For detailed information about flows for various types of applications, see Google's OAuth 2.0 documentation.
Here's the OAuth 2.0 scope information for the Google Cloud DNS API:
To request access using OAuth 2.0, your application needs the scope information, as well as information that Google supplies when you register your application (such as the client ID and the client secret).
https://www.googleapis.com/auth/ndev.clouddns.readwritegrants your app access to read and write to the Cloud DNS API.