credentials/google/internal/internal.go

/*
*
* Copyright 2026 gRPC authors.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
*     http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*
 */

// Package internal contains functionality internal to the google package.
package internal

import (
	"context"
	"time"

	"google.golang.org/grpc/internal/backoff"
)

// The following variables are overridden in tests.
var (
	// BackoffStrategy is the backoff strategy to use when token fetch fails.
	BackoffStrategy backoff.Strategy

	// IDTokenFetcher returns a function used to fetch an ID token for the
	// given audience. It takes a ctx and audience string as parameter and
	// returns the raw JWT token string, token's expiration timestamp and
	// error if encountered.
	IDTokenFetcher func() func(context.Context, string) (string, time.Time, error)
)