来自apollo-server-lambda上下文的' express '对象未定义

Question

我按照这个指南让我的apollo服务器运行netflix函数。对于未验证的请求，它工作得很好，但是当我需要读取报头时，我遇到了问题。

指南说我可以从express对象中获得req，如下面的代码片段所示。

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

然而，当我自己尝试这个时，我得到一个未定义的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req与headers和authorization的对象来解决我的问题。

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 };