Trait TokenProvider 

pub trait TokenProvider {
    type Token<'a>: Future<Output = Result<AccessToken>> + 'a
       where Self: 'a;

    // Required method
    fn token(&self) -> Self::Token<'_>;

    // Provided method
    fn quota_project(&self) -> Option<&str> { ... }
}

A source of access tokens.

Required Associated Types

type Token<'a>: Future<Output = Result<AccessToken>> + 'a where Self: 'a

Future of token.

Required Methods

fn token(&self) -> Self::Token<'_>

A token valid for at least a minute (an empty secret sends no header).

Provided Methods

fn quota_project(&self) -> Option<&str>

The project billed for API quota (user credentials only).

Dyn Compatibility

This trait is not dyn compatible.

In older versions of Rust, dyn compatibility was called "object safety".

Implementors

impl TokenProvider for Adc

type Token<'a> = impl Future<Output = Result<AccessToken, Error>> + 'a

impl TokenProvider for GcloudUser

type Token<'a> = impl Future<Output = Result<AccessToken, Error>> + 'a

impl TokenProvider for Metadata

type Token<'a> = impl Future<Output = Result<AccessToken, Error>> + 'a

impl TokenProvider for Static

type Token<'a> = Ready<Result<AccessToken, Error>>