mongo-go-driver/mongo/background_context.go at v1.17.9 · mongodb/mongo-go-driver

34 lines (28 loc) · 1.15 KB

// Copyright (C) MongoDB, Inc. 2017-present.
// 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
package mongo
import "context"
// backgroundContext is an implementation of the context.Context interface that wraps a child Context. Value requests
// are forwarded to the child Context but the Done and Err functions are overridden to ensure the new context does not
// time out or get cancelled.
type backgroundContext struct {
	context.Context
	childValuesCtx context.Context
// newBackgroundContext creates a new Context whose behavior matches that of context.Background(), but Value calls are
// forwarded to the provided ctx parameter. If ctx is nil, context.Background() is returned.
func newBackgroundContext(ctx context.Context) context.Context {
	if ctx == nil {
		return context.Background()
	return &backgroundContext{
		Context:        context.Background(),
		childValuesCtx: ctx,
func (b *backgroundContext) Value(key interface{}) interface{} {
	return b.childValuesCtx.Value(key)

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