从AWS函数中写入到dynamodb-WritestoadynamodbfromanAWSlambdafuncton

I an working in AWS writing to a dynamodb database from a lambda function. I am writing in Node.JS. I have console log writes before and after the write but the write doesn't seem to go to the table. I am thinking it is likely a authentication error or a config error. Below is the start of my code.

我在AWS上工作，从一个lambda函数编写到dynamodb数据库。我正在用Node.JS写作。我在写之前和之后都有写控制台日志，但是写似乎没有放到表中。我认为可能是验证错误或配置错误。下面是我的代码的开头。

'use strict';
console.log('Loading function');

var AWS = require('aws-sdk');
AWS.config.update({region: 'us-west-2'});
var dynamo = new AWS.DynamoDB();

// let doc = require('dynamodb-doc');
//let dynamo = new doc.DynamoDB();

var DevicetableName = "DeviceReadings";
var AlarmtableName = "AlarmReports";
var datetime = new Date().getTime().toString();

/**
 * v10
 * Provide an event that contains the following keys:
 *
 *   - eventType: type of event temp log or alarm
 *   - deviceID: ID of device reporting temp or alarm
 *   - deviceType:  Type of device furnace or annealer
 *   - temp: temperature the device is reporting in fahrenheit degrees
 *   - alarmLevel: level of alarm severe, warning, informational....
 *   - alarmText: text of alarm for persisting and publishing
 *   - datetime: time of alarm or temp report
 */
exports.handler = (event, context, callback) => {
    console.log('Received event:', JSON.stringify(event, null, 2));

    const eventType = event.eventType;



    switch (eventType) {
        /* Update DB with current Temperature and alarm if needed */
        case 'LogAnnealTemp':{
            /* parse temp out of payload */
            console.log('LogAnnealTemp Reached');
            dynamo.putItem(
                {
                    "TableName": DevicetableName,
                     "Item": 
                    {
                    "deviceIDSensorID": {"S": "Dev1Sense1" },
                    "deviceType": {"S": "Anneal" },
                    "temp": {"N": "1969"  },
                    "timeTaken": {"S": "today" },
                    "timeWritten": {"S": "alsotoday" }
                    }
                });
            console.log('LogAnnealTemp After Write Reached');
            break;
        }
        case 'LogFurnaceTemp':{
            /* parse temp out of payload */
            console.log('LogAnnealTemp Reached');

            /* If temp is over 2300 write to alarm topic */
            if (event.temp >= 2300)
            {
                console.log('LogFurnaceTemp over 2300 Reached');  
            }
            /* Else if temp is under 1900 write to alarm topic */
            else if (event.temp <= 1900)
            {
                console.log('LogFurnaceTemp under 1900 Reached');      
            }
            break;
        }
        case 'LogAlarm':{
            /* parse alarm level out of payload */
            /* If alarm is severe log and notify */
            if (event.alarmlevel = "severe") 
            {
                console.log('LogAlarm Severe'); 
            }
            /* Else if alarm is serious log and notify */
            else if (event.alarmlevel = "serious") 
            {
                console.log('LogAlarm Serious'); 
            }
            /* Else if alarm is warning log */
            else if (event.alarmlevel = "warning") 
            {
                console.log('LogAlarm Warning');  
            }
            else if (event.alarmlevel = "informational") 
            {
                console.log('LogAlarm Informational');
            }
            else {
                console.log('LogAlarm Unknown');
            }
            break;
        }
        case 'ping':{
            callback(null, 'pong');
            break;
        }
        default:
            callback(new Error(`Unrecognized operation "${operation}"`));
    }


};

When I run this as a simple exec version of lambda it runs, writes to the console, but the write doesn't happen. When I run this as a micros service it blows up on the require statement. Any and all help appreciated.

当我将它作为lambda的一个简单的执行版本运行时，将其写入控制台，但写入不会发生。当我将它作为微处理器服务运行时，它会在require语句上崩溃。任何和所有的帮助都被感激。

2 个解决方案

dynamo.putItem({ ... }, function(err, data) {
    if(err) {
        console.error('dynamo failed', err);
        context.fail();
    } else {
        context.done();
    }
});