尝试删除 api 键但得到 "await is only valid in async function"

Question

我正在尝试使用 AWS SDK JS 删除 api 个密钥，但我收到此错误消息：

{
    "errorType": "Runtime.UserCodeSyntaxError",
    "errorMessage": "SyntaxError: await is only valid in async function",
    "stack": [
        "Runtime.UserCodeSyntaxError: SyntaxError: await is only valid in async function",
        "    at _loadUserApp (/var/runtime/UserFunction.js:98:13)",
        "    at Object.module.exports.load (/var/runtime/UserFunction.js:140:17)",
        "    at Object.<anonymous> (/var/runtime/index.js:36:30)",
        "    at Module._compile (internal/modules/cjs/loader.js:701:30)",
        "    at Object.Module._extensions..js (internal/modules/cjs/loader.js:712:10)",
        "    at Module.load (internal/modules/cjs/loader.js:600:32)",
        "    at tryModuleLoad (internal/modules/cjs/loader.js:539:12)",
        "    at Function.Module._load (internal/modules/cjs/loader.js:531:3)",
        "    at Function.Module.runMain (internal/modules/cjs/loader.js:754:12)",
        "    at startup (internal/bootstrap/node.js:283:19)"
    ]
}

我试图创建一个删除承诺，就像我对 select 键所做的那样，但我认为在 foreach 中执行它可能是一个问题。

我的代码：

let sendPromise = null;
let params = {
    includeValues: true,
    limit: 500
};
let dados = null;

sendPromise = new AWS.APIGateway().getApiKeys( params ).promise();

try {
    dados = await sendPromise;
} catch(err) {
    console.error(err, err.stack);
    return criarResposta( 500, `{
        "message": "Erro interno"
    }` );
}

dados.items.forEach( chave => {
    const paramsDeletar = {
        apiKey: chave.id
    };

    sendPromise = new AWS.APIGateway().deleteApiKey( params ).promise();

    try {
        let dadosDeletar = await sendPromise;
    } catch(err) {
        console.error( err, err.stack );
        return criarResposta( 500, `{
            "message": "Erro interno"
        }` );
    }
});

return criarResposta( 200, JSON.stringify( dados ) );

另外，我需要单独等待我所有的 promise 还是有等待 promise 的捆绑包的方法？我等不及我的承诺了，因为我正在使用 lambda，但我希望我能让它们运行在一起

Answer 1

你必须创建一个异步函数才能在 Nodejs 中使用 async-await 您只需要在 forEach 函数中使用 async 关键字

let sendPromise = null;
let params = {
    includeValues: true,
    limit: 500
};
let dados = null;

sendPromise = new AWS.APIGateway().getApiKeys( params ).promise();

try {
    dados = await sendPromise;
} catch(err) {
    console.error(err, err.stack);
    return criarResposta( 500, `{
        "message": "Erro interno"
    }` );
}

dados.items.forEach( async chave => {
    const paramsDeletar = {
        apiKey: chave.id
    };

    sendPromise = new AWS.APIGateway().deleteApiKey( params ).promise();

    try {
        let dadosDeletar = await sendPromise;
    } catch(err) {
        console.error( err, err.stack );
        return criarResposta( 500, `{
            "message": "Erro interno"
        }` );
    }
});

return criarResposta( 200, JSON.stringify( dados ) );

Answer 2

这里最好把forEach循环换成for循环，这样就可以使用里面的await:

...
for (const chave of dados.items) {
    const paramsDeletar = {
        apiKey: chave.id
    };

    sendPromise = new AWS.APIGateway().deleteApiKey( params ).promise();

    try {
        let dadosDeletar = await sendPromise;
    } catch(err) {
        console.error( err, err.stack );
        return criarResposta( 500, `{"message": "Erro interno"}` );
    }
}

尝试删除 api 键但得到 "await is only valid in async function"

Trying to delete api key but getting "await is only valid in async function"

javascript

node.js

aws-sdk-js