Package com.google.auth (1.27.0)

Credentials class for calling Google APIs using an API key.

Uses an API key directly in the request metadata to provide authorization.

Note: ApiKeyCredentials extends from base Credentials class rather than GoogleCredentials/OAuth2Credentials, as it does not provide an access token and is not considered an OAuth2 credential.

 Credentials credentials = ApiKeyCredentials.create("your api key");
 

Represents an abstract authorized identity instance.

The callback that receives the result of the asynchronous Credentials#getRequestMetadata(java.net.URI, java.util.concurrent.Executor, RequestMetadataCallback). Exactly one method should be called.

Interface for a service account signer. A signer for a service account is capable of signing bytes using the private key associated with its service account.