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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".