[Solved] In a Step Functions Task state configured to call DynamoDB GetItem:{ "Type": "Task", "Resource": "arn:aws:states:::dynamodb:getItem", "Parameters": { "TableName": "Products", "Key": { "ProductId":... | DynamoDB

DynamoDB - with Serverless

In a Step Functions Task state configured to call DynamoDB GetItem:

{
  "Type": "Task",
  "Resource": "arn:aws:states:::dynamodb:getItem",
  "Parameters": {
    "TableName": "Products",
    "Key": { "ProductId": { "S": "prod456" } }
  },
  "ResultPath": "$.productInfo"
}

What will be the content of the state output after this task executes successfully?

AThe output will be empty because GetItem does not return any data.

BThe output will only contain the raw DynamoDB response without merging with the input.

CThe output will include the original input plus a 'productInfo' field containing the DynamoDB item attributes.

DThe output will contain only the 'ProductId' key without any attribute values.

Step-by-Step Solution

Solution:

Step 1: Understand ResultPath
The 'ResultPath' field specifies where to place the result of the Task in the state input. Here, it's set to '$.productInfo'.
Step 2: DynamoDB GetItem Output
GetItem returns the item attributes if found, which will be inserted under 'productInfo' in the state output.
Final Answer:
The output will include the original input plus a 'productInfo' field containing the DynamoDB item attributes. -> Option C
Quick Check:
ResultPath merges result into input [OK]

Quick Trick: ResultPath merges DynamoDB output into input [OK]

Common Mistakes:

MISTAKES

Assuming output replaces input entirely
Expecting empty output from GetItem
Ignoring the effect of ResultPath

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More DynamoDB Quizzes

In a Step Functions Task state configured to call DynamoDB GetItem:

Step 1: Understand ResultPath

Step 2: DynamoDB GetItem Output

Final Answer:

Quick Check:

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