尝试查询Apollo无服务器Lambda服务器时出现“消息”错误：“禁止”

Question

我正在尝试遵循https://www.apollographql.com/docs/apollo-server/deployment/lambda/这个示例，以创建一个无服务器的GraphQL服务器，该服务器返回“ Hello world”。

根目录实际上仅包含两个文件graphql.js和serverless.yml：

> tree . -I node_modules
.
├── graphql.js
├── package-lock.json
├── package.json
└── serverless.yml

在此示例中，graphql.js读取

const { ApolloServer, gql } = require('apollo-server-lambda');

const typeDefs = gql`
  type Query {
    hello: String
  }
`;

const resolvers = {
  Query: {
    hello: () => 'Hello world!',
  },
}

const server = new ApolloServer({ typeDefs, resolvers });

exports.graphqlHandler = server.createHandler();

和serverless.yml读

service: apollo-lambda

provider:
  name: aws
  runtime: nodejs8.10
functions:
  graphql:
    handler: graphql.graphqlHandler
    events:
      - http:
          path: graphql
          method: post
          cors: true
      - http:
          path: graphql
          method: get
          cors: true

这似乎已成功部署：

> serverless deploy
Serverless: Packaging service...
Serverless: Excluding development dependencies...
Serverless: Creating Stack...
Serverless: Checking Stack create progress...
.....
Serverless: Stack create finished...
Serverless: Uploading CloudFormation file to S3...
Serverless: Uploading artifacts...
Serverless: Uploading service apollo-lambda.zip file to S3 (4.55 MB)...
Serverless: Validating template...
Serverless: Updating Stack...
Serverless: Checking Stack update progress...
....................................
Serverless: Stack update finished...
Service Information
service: apollo-lambda
stage: dev
region: us-east-1
stack: apollo-lambda-dev
resources: 12
api keys:
  None
endpoints:
  POST - https://e9g6evoks0.execute-api.us-east-1.amazonaws.com/dev/graphql
  GET - https://e9g6evoks0.execute-api.us-east-1.amazonaws.com/dev/graphql
functions:
  graphql: apollo-lambda-dev-graphql
layers:
  None
Serverless: Run the "serverless" command to setup monitoring, troubleshooting and testing.

但是，如果我去操场上询问“你好”，我会收到“禁止”消息：

就是我的

query {
  hello
}

不会导致记录在https://www.apollographql.com/docs/apollo-server/essentials/server/上的响应，而是会导致

{
  "error": {
    "message": "Forbidden"
  }
}

知道我在做什么错吗？

Answer 1

好的，我发现了错误。 apollo-server-lamdba存在一个已知问题。

在浏览游乐场（在https://e9g6evoks0.execute-api.us-east-1.amazonaws.com/dev/graphql时），端点的url已被预先填充，但是错过了/dev/部分（serverless.yml中定义的阶段部分）。只需添加它，它将正常工作。

cfr：https://github.com/apollographql/apollo-server/issues/2136#issuecomment-458465128

Answer 2

其实原教程已经有了解决方案（Setting up GraphQL Playground）。只需按如下方式编辑您的代码。

const server = new ApolloServer({ 
    typeDefs, 
    resolvers, 
    playground: {
        endpoint: "/dev/graphql"
    }
});