Integrates Google as an external OAuth2 provider.
The unique identifier and th expected value in the X-OAuth2-Provider header is Google.
The following configuration properties are supported:
oauth2.authorization.proxy.server.springboot.providers.google.clientId: the client id of the Google OAuth2 application.oauth2.authorization.proxy.server.springboot.providers.google.clientSecretthe client secret, currently optional.
The Google OAuth2 provider is only used if the oauth2.authorization.proxy.server.springboot.providers.google.clientId
is provided by the application, otherwise none of the beans are created, and thus the Google OAuth2 provider won't be
available.
Google API Client Library for Java is used for the integration.
The
Oauth2
class's tokeninfo and userinfo methods are used to verify the given access token and retrieve the user information
from Google.
The Google OAuth 2.0 Playground can be used for testing access tokens provided by Google.