在AWS-Lambda

Question

我在AWS-Lambda中运行代码时遇到以下错误。

  

TypeError：第一个参数必须是EventEmitter上ClientRequest.OutgoingMessage.write（_http_outgoing.js：447：11）的字符串或缓冲区。 （/var/task/index.js:52:13）在emitEneter（events.js：169：13）的emitOne（events.js：169：13）处于exports.handler.eventEmitter.on.offset（/） VAR /任务/ index.js：57：18）

'use strict';
let https = require('https');
exports.handler = (event, context, callback) => {
    var ratesData =[];
    var totalRecords =0;
    var events = require('events');
    var options = {
        hostname: 'encrypted.google.com',
        port: 443,
        path: '/',
        method: 'GET'
    };
    // Create an eventEmitter object
    var eventEmitter = new events.EventEmitter();
    eventEmitter.on('getJson', function(offset)
    {    
        const req = https.request(options.toString(), (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')    
                {
                    var  requestedJson = JSON.parse(body);
                    body = requestedJson.records;

                    totalRecords = requestedJson.total_records;
                    body.forEach(function(record)
                    {
                        ratesData.push(record);
                    });
                }

                callback(null, body);
            });
        });
        req.on('error', callback);
        req.write(JSON.stringify(event.data));
        req.end();
    });
    console.log('in calling');
    // Bind the connection event with the handler
    eventEmitter.emit('getJson',0);
    for(var i=1;i < (totalRecords/100)+1;i++)
    {
        eventEmitter.emit('getJson',i);
    }
    console.log(ratesData);

};

Answer 1

对于您的选项对象toString()。删除它。

我还建议在本地进行测试，因为它更容易调试。

// filename: test.js - run as node test.js

// Require your lambda 
require('./index.js');

// Dummy context
var context = { };

// The event object - make sure of its format. S3 buckets pass a Records array for example
var e = { };

// Call the Lambda function
lambda.handler(e, context, function(err, result) {
    console.log('------------');
    console.log('Context done');
    console.log('   error:', err);
    console.log('   result:', result);
  });