AWS DynamoDB node.js put request doesn't put data into Dynamo table

Question

I am using following code to ingest data to DynamoDB.

Code to read from Kinesis

var AWS = require("aws-sdk"),
DOC = require("dynamodb-doc");
docClient = new DOC.DynamoDB();

function upsert(result) {
   var info = new Info(result);
   console.log('Within upsert :', info.AcctNo);
   docClient.putItem({
      TableName: "test_lamda_dynamo_table",
      Item: info
   }, function(err, data) {
      if (err) {
        console.error('error', err);
        context.done('error', err);
      } else {
        console.log('success', data);
        context.done('success', event.Records);
      }
   });
}

I am not able to see error handler sysouts in cloudwatch logs as well as I am not able to see data in DynamoDB.

Below are sample logs from cloudwatch

"Within upsert Info: 1234456"

I am not able to see any error logs related to PutItem function in cloudwatch lambda function logs.

Please suggest what I am doing wrong here.

Did you test your lambda function to check if all the steps run smoothly? — Vsevolod Goloviznin
– Vsevolod Goloviznin, Commented Oct 20, 2015 at 8:40
I have verified same with Get request. I am able to read data from Dynamo using same lambda function. — Chetan Shirke
– Chetan Shirke, Commented Oct 20, 2015 at 8:42
There is a way to test the lambda function itself by pressing 'test' button, it will run the function and give you the log. You can do that and see what console.log gives you — Vsevolod Goloviznin
– Vsevolod Goloviznin, Commented Oct 20, 2015 at 8:43
I have verified it using test button. here is what I am getting in logs. 2015-10-20T08:27:48.090Z 7130dc0f-7704-11e5-90c5-d181341d7eff [ 'Within upsert meter Info: 1234456' ] END RequestId: 7130dc0f-7704-11e5-90c5-d181341d7eff REPORT RequestId: 7130dc0f-7704-11e5-90c5-d181341d7eff Duration: 652.26 ms Billed Duration: 700 ms Memory Size: 128 MB Max Memory Used: 37 MB — Chetan Shirke
– Chetan Shirke, Commented Oct 20, 2015 at 8:45
Can you check that the docClient is initialized and you can put something into another table, just to check? — Vsevolod Goloviznin
– Vsevolod Goloviznin, Commented Oct 20, 2015 at 8:47

Community · Accepted Answer · 2017-05-23 12:09:24Z

2

I found solution for this problem on below link.

Querying DynamoDB with Lambda does nothing

This was because of context.succeed call used in lambda handler as well.

    exports.handler = function(event, context) {

  event.Records.forEach(function(record) {
    try {
      var payload = new Buffer(record.kinesis.data, 'base64').toString('ascii');

      console.log('Decoded payload:', payload);

      upsert(payload, context);

      // bug
      context.succeed("Success")

    } catch (e) {
      // log error and continue
      console.error('Error occured while inserting messages to Dynamo' + e);
    }
  });
};

edited May 23, 2017 at 12:09

CommunityBot

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answered Nov 18, 2015 at 8:05

Chetan Shirke

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