Interface PerRPCCredentials

credentials/credentials.go:38–52

PerRPCCredentials defines the common interface for the credentials which need to attach security information to every RPC (e.g., oauth2).

// PerRPCCredentials defines the common interface for the credentials which need to
// attach security information to every RPC (e.g., oauth2).
type PerRPCCredentials interface {
	// GetRequestMetadata gets the current request metadata, refreshing tokens
	// if required. This should be called by the transport layer on each
	// request, and the data should be populated in headers or other
	// context. If a status code is returned, it will be used as the status for
	// the RPC (restricted to an allowable set of codes as defined by gRFC
	// A54). uri is the URI of the entry point for the request.  When supported
	// by the underlying implementation, ctx can be used for timeout and
	// cancellation. Additionally, RequestInfo data will be available via ctx
	// to this call.
	GetRequestMetadata(ctx context.Context, uri ...string) (map[string]string, error)
	// RequireTransportSecurity indicates whether the credentials requires
	// transport security.
	RequireTransportSecurity() bool
}

// SecurityLevel defines the protection level on an established connection.
//