如何在graphql中实现自动刷新令牌以进行基于jwt的身份验证？

Question

我试图在基于Apollo的graphql server (2.0)中为基于JWT的身份验证找出这种情况.

基本上在登录后,用户从服务器获取accessToken和refreshToken.

AccessToken在一段时间后过期,服务器发送一条错误消息,表明令牌已过期(TokenExpiredError),然后客户端需要通过传递refreshToken与服务器进行新的accessToken通信.

流量如下 -

1. 发生TokenExpiredError
2. 在客户端获取该错误
3. 使用旧的accessToken对所有请求进行排队(这样服务器不会被太多的refreshToken调用淹没,并且服务器会生成许多accessTokens)
4. 在graphql server上调用refreshToken api以获取新的accessToken
5. 使用新的accessToken更新所有授权呼叫的accessToken
6. 注销用户incase refreshToken本身已过期
7. 防止任何种类的竞争条件黑白电话

我已经在客户端实现了refreshToken变异但是无法弄清楚何时发生错误停止所有请求 - >请求新令牌 - >再次进行所有待处理请求以及刷新令牌是否已过期注销用户.

Answer 1

我最终按照这种方法解决了我的问题

为其他人发布我的方法

// @flow
import { ApolloLink, Observable } from 'apollo-link';
import type { ApolloClient } from 'apollo-client';
import type { Operation, NextLink } from 'apollo-link';

import { refreshToken2, getToken } from './token-service';
import { GraphQLError } from 'graphql';

export class AuthLink extends ApolloLink {
     tokenRefreshingPromise: Promise<boolean> | null;

injectClient = (client: ApolloClient): void => {
    this.client = client;
};

refreshToken = (): Promise<boolean> => {
    //if (!this.tokenRefreshingPromise) this.tokenRefreshingPromise = refreshToken(this.client);
    if (!this.tokenRefreshingPromise) this.tokenRefreshingPromise = refreshToken2();
    return this.tokenRefreshingPromise;
};

setTokenHeader = (operation: Operation): void => {
    const token = getToken();
    if (token) operation.setContext({ headers: { authorization: `Bearer ${token}` } });
};

request(operation: Operation, forward: NextLink) {
    // set token in header
    this.setTokenHeader(operation);
    // try refreshing token once if it has expired
    return new Observable(observer => {
        let subscription, innerSubscription, inner2Subscription;
        try {
            subscription = forward(operation).subscribe({
                next: result => {
                    if (result.errors) {
                        console.log("---->", JSON.stringify(result.errors))
                        for (let err of result.errors) {
                            switch (err.extensions.code) {
                              case 'E140':
                                console.log('E140', result)
                                observer.error(result.errors)
                                break;
                              case 'G130':
                                    this.refreshToken().then(response => {
                                        if (response.data && !response.errors) {
                                            this.setTokenHeader(operation);
                                            innerSubscription = forward(operation).subscribe(observer);
                                        } else {
                                            console.log("After refresh token", JSON.stringify(response));
                                            observer.next(response)
                                        }
                                    }).catch(console.log);
                                break;
                            }
                          }
                    } 
                    observer.next(result)

                  },
                complete: observer.complete.bind(observer),
                error: netowrkError => {
                    observer.error(netowrkError);
                  }
                },
            });
        } catch (e) {
            observer.error(e);
        }
        return () => {
            if (subscription) subscription.unsubscribe();
            if (innerSubscription) innerSubscription.unsubscribe();
            if (inner2Subscription) inner2Subscription.unsubscribe();
        };
    });
}
}