AWS Lambda test does not return data from DynamoDB table

Question

I am trying to get data from my DynamoDB table called dashboard so I am testing out the Lambda function with a sample from the table.

But all I am getting back from the test is :

Response:
{
  "statusCode": 200,
  "body": "\"Hello from Lambda!\""
}

It should just return the data from the table that matches it based on the ID as that is what I use to partition the table.

Dashboard example data which is also the test I made

{
  "batteryLevel": 35,
  "deviceId": "yxftd9pnitd-156xhref9g69a",
  "eventId": "c07e3f9f-f6bb-4792-be6f-a9be95cdff38",
  "id": 12345,
  "location": {
    "accuracy": 35.369,
    "latitude": 55.8256671,
    "longitude": 37.5962931
  },
  "tags": [
    {
      "accelX": 0.012,
      "accelY": -0.004,
      "accelZ": 1.008,
      "createDate": "2020-08-11T18:51:58+0300",
      "dataFormat": 5,
      "defaultBackground": 2,
      "favorite": true,
      "humidity": 32.8425,
      "id": "E5:F1:98:34:C0:0F",
      "measurementSequenceNumber": 62865,
      "movementCounter": 21,
      "name": "Kitchen",
      "pressure": 98702,
      "rssi": -43,
      "temperature": 25.58,
      "txPower": 4,
      "updateAt": "2020-08-18T19:57:48+0300",
      "voltage": 3.013
    }
  ],
  "time": "2020-08-18T19:57:48+0300"
}

Lambda Function

"use strict";

const AWS = require("aws-sdk");

AWS.config.update({ region: "ap-southeast-1" });

exports.handler = async (event, context) => {
    const ddb = new AWS.DynamoDB({ apiVersion: "2012-10-08" });
    const documentClient = new AWS.DynamoDB.DocumentClient({ region: "ap-southeast-1"});
    
    const params = {
        TableName: "dashboard",
        Key: {
            id: 12345
        }
    };
    try {
        const data = await documentClient.get(params);
        console.log(data);
    } catch (err) {
        console.log(err);
   }
};

Seems like you are executing either wrong function or wrong version of it. — Marcin
– Marcin, Commented Oct 17, 2020 at 6:12
You are outputting Hello from Lambda. This is not coming from the function you've posted. Maybe you did not deploy the function? — Marcin
– Marcin, Commented Oct 17, 2020 at 6:18
Glad to hear it worked. If you don't mind I will provide an answer for future reference. — Marcin
– Marcin, Commented Oct 17, 2020 at 6:21

Marcin · Accepted Answer · 2020-10-17 06:22:46Z

2

Based on the comments.

The issue was caused by not deploying the function after adding new code. Subsequently, the previously deployed version (i.e. "Hello from Lambda") was being executed.

The solution was to deploy the new function.

answered Oct 17, 2020 at 6:22

Marcin

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