带有请求-promise的AWS Lambda

Question

exports.handler = async (event, context, callback) => {
    console.log("Starting call: " + event.queryStringParameters.filter);
    console.log("Decoded param: " + decodeURIComponent(event.queryStringParameters.filter));
    var filter = JSON.parse(decodeURIComponent(event.queryStringParameters.filter));
    console.log("Filter: " + filter);
    var ingredients = filter.ingredients;
    var options = {
        uri: 'https://api.*****.com/search',
        qs: {
            app_id: '****',
            app_key: '*****',
            q: ingredients.join(' ')
        },
        json: true
    };
    console.log("Done calling stuff");

    rp(options)
        .then(function(recipes) {
            console.log('Response: ' + recipes);
            var recipesToReturn = [];

            recipes.hits.forEach(function(recipeHit) {
                recipesToReturn.push(objectMapper(recipeHit.recipe, recipeMap));
            });
            console.log('Recipes:', recipesToReturn);
            const response = {
                statusCode: 200,
                body: JSON.stringify(recipesToReturn),
            };
            return JSON.stringify(response);
        })
        .catch(function(err) {
            console.log('Error:', err)
            const response = {
            statusCode: 400,
            body: err,
            };
            return JSON.stringify(response);
        });
};

Sun 5月26日16:59:21 UTC 2019：由于配置错误执行失败：格式错误的Lambda代理响应

我一直试图阅读Lambda代理响应应该如何格式化，我假设我遗漏了一些与回调或上下文有关的内容，但我一直无法弄清楚如何使它与请求-promise库一起工作。

Answer 1

在代理集成中，API网关只是在前端和后端之间传递整个请求和响应。

这是发送到API网关的response lambda函数的问题。

对lambda的响应应该具有以下键值

{
    "isBase64Encoded": true|false,
    "statusCode": httpStatusCode,
    "headers": { "headerName": "headerValue", ... },
    "body": "..."
}

const response = {
                statusCode: 200,
                isBase64Encoded: false
                headers:""
                body: JSON.stringify(recipesToReturn),
            };