Question

我对AWS LAmbda有点新意，并试图通过AWS Lambda函数向服务器发出http请求。我使用了AWS HTTPS蓝图代码，只对option变量进行了修改（参见下面的代码）。

const https = require('https');

let headers = {
    'Authorization': 'ApiKey {key}'
};

let options = {
    url: 'https://myds.io/api/external/patients/events/medications/',
    headers: headers
};

exports.handler = (event, context, callback) => {
    const req = https.request(options, (res) => {
        let body = '';
        console.log('Status:', res.statusCode);
        console.log('Headers:', JSON.stringify(res.headers));
        res.setEncoding('utf8');
        res.on('data', (chunk) => body += chunk);
        res.on('end', () => {
            console.log('Successfully processed HTTPS response');
            // If we know it's JSON, parse it
            if (res.headers['content-type'] === 'application/json') {
                body = JSON.parse(body);
            }
            callback(null, body);
        });
    });
    req.on('error', callback);
    req.write(JSON.stringify(event.data));
    req.end();
};

当我尝试运行此代码时，我收到以下错误。我无法理解，问题出在哪里以及语法有什么问题。请你帮我。

只需调用此Lambda函数。我正在使用以下测试功能。

以下是执行结果。

Response:
{
  "errorMessage": "connect ECONNREFUSED 127.0.0.1:443",
  "errorType": "Error",
  "stackTrace": [
    "Object._errnoException (util.js:1022:11)",
    "_exceptionWithHostPort (util.js:1044:20)",
    "TCPConnectWrap.afterConnect [as oncomplete] (net.js:1198:14)"
  ]
}

Request ID:
"0fae1df6-6351-11e8-9741-a3dc748f359b"

Function Logs:
START RequestId: 0fae1df6-6351-11e8-9741-a3dc748f359b Version: $LATEST
2018-05-29T15:00:44.205Z    0fae1df6-6351-11e8-9741-a3dc748f359b    {"errorMessage":"connect ECONNREFUSED 127.0.0.1:443","errorType":"Error","stackTrace":["Object._errnoException (util.js:1022:11)","_exceptionWithHostPort (util.js:1044:20)","TCPConnectWrap.afterConnect [as oncomplete] (net.js:1198:14)"]}
END RequestId: 0fae1df6-6351-11e8-9741-a3dc748f359b
REPORT RequestId: 0fae1df6-6351-11e8-9741-a3dc748f359b  Duration: 35.27 ms  Billed Duration: 100 ms     Memory Size: 128 MB Max Memory Used: 22 MB

Answer 1

在req.write(JSON.stringify(event.data));正在搜索event.data，但您的测试事件没有data密钥，只有key1, key2, key3。

尝试将测试事件更改为类似以下内容：

{
   "data": "something"
}

Answer 2

问题现在解决了。我已经在语法上做了一些编辑，它现在工作正常。

'use strict'

const https = require('https');

let options = {
    host : 'myds.io',
    path:  '/api/external/patients/events/medications/',
    headers: {
        'Authorization': 'ApiKey *******'
        },
};

exports.handler = (event, context, callback) => {
    const req = https.request(options, (res) => {
        let body = '';
        console.log('Status:', res.statusCode);
        console.log('Headers:', JSON.stringify(res.headers));
        res.setEncoding('utf8');
        res.on('data', (chunk) => body += chunk);
        res.on('end', () => {
            console.log('Successfully processed HTTPS response');
            // If we know it's JSON, parse it
            if (res.headers['content-type'] === 'application/json') {
                body = JSON.parse(body);
            }
            callback(null, body);
        });
    });
    req.on('error', callback);
    req.write(JSON.stringify(event.data));
    req.end();
};

AWS Lambda HTTPS请求 - 蓝图

2 个答案: