Create Lambda Function to Handle DynamoDB Requests

Objective

Create a new Lambda Function to process requests to DynamoDB through API Gateway.

Steps

Download the backend file from here.

Step 1: Create IAM Role

  1. Open IAM Console → Roles → Create role

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  1. Select
    Trusted entity: AWS Service → Lambda

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  1. Attach the following permissions:

    • AmazonDynamoDBFullAccess
    • CloudWatchLogsFullAccess

  2. Set the role name: LambdaAPIAccessRole

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Step 2: Create Lambda Function

  1. Go to AWS Lambda → Create function
  2. Select Author from scratch
  3. Function name: DynamoDB_API_Handler
  4. Runtime: Java 17
  5. Choose IAM Role: LambdaAPIAccessRole

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Step 3: Deploy the JAR File

  1. Go to S3 → Upload → Add files
    Upload the jar file, then copy the Object URL

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  1. Go to AWS Lambda → Upload from S3
    Paste the object URL you copied

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  1. Go to AWS Lambda → Code → Runtime settings → Edit
  2. Set Handler:
    org.example.flyora_backend.handler.StreamLambdaHandler::handleRequest

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Step 4: Configure Lambda Function

  1. Go to AWS Lambda → Configuration → General configuration → Edit
  2. Set Timeout: 1 min

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  1. Go to AWS Lambda → Configuration → Environment variables → Edit
  2. Add:
    • Key: APP_JWT_SECRET
    • Value: huntrotflyorateam!@ky5group5member

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  1. Key: GHN_TOKEN; Value: 445c659d-5586-11f0-8c19-5aba781b9b65