Use Lambda

Vanus supports sending direct events to AWS Lambda. The following page will teach you how to use Lambda with vsctl command in Vanus.

Prerequisites

Before using Lambda, you must meet the following prerequisites:

1. Have a running Vanus cluster.
2. Have vsctl.
3. An AWS account configured with Access Keys.
4. Have a Lambda function
5. The "lambda:InvokeFunction" permission grant for your AWS user account

Create a Subscription to Use with Lambda

When you create a subscription setting the protocol flag as "aws-lambda", Vanus will send all available events to your aws-lambda.

Use the command below to create your Subscription:

vsctl subscription create \
  --name=test-lambda \
  --eventbus=test-lambda \
  --sink "arn:aws:lambda:us-west-2:843378899134:function:eventecho" \
  --protocol aws-lambda \
  --credential-type aws \
  --credential '{"access_key_id":"xxxxxx","secret_access_key":"xxxxxxx"}'

The following params are also required:

1. sink: your lambda function ARN.
2. credential-type: must be "aws".
3. credential: AWS account Access Keys,JSON format use properties "access_key_id" and "secret_access_key".