按照本教程的说明,我使用Amplify部署了一个AWS AppSync GraphQL终端节点:
https://aws-amplify.github.io/docs/js/api#amplify-graphql-client
我用Node.js和TypeScript创建了一个Lambda函数来查询数据:
import { APIGatewayEvent, Callback, Context, Handler } from 'aws-lambda';
import Amplify, { API, graphqlOperation } from "aws-amplify";
import * as queries from './src/graphql/queries';
import * as mutations from './src/graphql/mutations';
import { CreateBlogInput } from './src/API';
import aws_config from "./src/aws-exports";
Amplify.configure(aws_config);
export const list: Handler = async (event: APIGatewayEvent, context: Context, cb: Callback) => {
const allBlogs = await API.graphql(graphqlOperation(queries.listBlogs));
// this seems to be working
console.log(JSON.stringify(allBlogs));
const response = {
statusCode: 200,
body: JSON.stringify(allBlogs),
};
cb(null, response);
}
现在,当我通过HTTP调用Lambda函数时,它将检索数据并将其记录到控制台。但是它永远不会完成请求并做出响应,即使我将超时时间增加到30秒,它也总是会超时。运行突变和插入数据也会发生同样的情况。
任何想法可能有什么问题吗?
答案 0 :(得分:4)
这里的问题是您混合了lambda签名。
要么,您都使用std::vector<int> myVector;
while (cin >> x) {
myVector.emplace_back(x);
}
和 return (如果发生错误,则使用 throw ):
async
或者您不使用export const list: Handler = async (event: APIGatewayEvent, context: Context, cb: Callback) => {
// ... rest of function
return response;
}
,而是使用async
函数:
callback