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dynamodb-streams

README.md

dynamodb-streams

This example reimplements AWS developer guide tutorial (Process New Items with DynamoDB Streams and Lambda) with slight modification through Serverless Framework.

dynamodb streams diagram

Source

Deployment

First, clone the project to local:

> git clone [email protected]:m-sureshraj/serverless-examples.git
> cd dynamodb-streams

Configure environment variables:

> cp .env.sample.yml .env.dev.yml

Add your email address to the EMAIL_SUBSCRIBER: [email protected] variable.

> sls deploy

A successful deployment print a similar output:

✔ Service deployed to stack dynamodb-streams-dev (163s)

endpoint: POST - https://xxxxxxx.execute-api.ap-south-1.amazonaws.com/
functions:
  bark: dynamodb-streams-dev-bark (46 kB)
  dbChangeListener: dynamodb-streams-dev-dbChangeListener (46 kB)

After successful deployment, SNS sends a subscription confirmation email to the configured email address. Click confirm subscription link to subscribe to that topic.

Subscription confirmation

Testing

Get the endpoint from the sls deploy output and send a POST request to it.

curl -X POST https://xxxxxxx.execute-api.ap-south-1.amazonaws.com/ \
-H 'Content-Type: application/json' -d '{ "username": "bar" }'

You should receive the notification email to the configured email address.

Notification