node.js - 来自 apollo-server-lambda 上下文的“express”对象未定义

Question

我正在按照本指南使我的 apollo 服务器使用 Netlify 功能运行。它适用于未经身份验证的请求，但是当我需要读取标头时遇到问题。

该指南说我可以req从express这个片段中显示的对象获取。

const server = new ApolloServer({
  typeDefs,
  resolvers,
  context: ({ event, context, express }) => ({
    headers: event.headers,
    functionName: context.functionName,
    event,
    context,
    expressRequest: express.req,
  }),
});

但是，当我自己尝试这个时，我得到一个 undefined express。这是我的代码。

const { ApolloServer } = require("apollo-server-lambda");
const accountsGraphQL = require("./accounts.js");
const schema = require("./schema/index.js");

const server = new ApolloServer({
  schema,
  context: async ({ event, context, express }) => {
    console.log(express); // outputs undefined
    return {
      headers: event.headers,
      functionName: context.functionName,
      event,
      context: await accountsGraphQL.context(express.req), // errors `Context creation failed: Cannot read property 'req' of undefined`
    }
  },
  introspection: true,
  playground: true,
});

const handler = server.createHandler();

module.exports = { handler };

Answer 1

无论如何，我通过制作另一个包含andreq的对象来解决我的问题。headersauthorization

const { ApolloServer } = require("apollo-server-lambda");
const accountsGraphQL = require("./accounts.js");
const schema = require("./schema/index.js");

const server = new ApolloServer({
  schema,
  context: async ({ event }) => {
    return await accountsGraphQL.context({
      req: { headers: { authorization: event.headers.authorization } },
    });
  },
  introspection: true,
  playground: true,
});

const handler = server.createHandler();

module.exports = { handler };