Invoking the Lambda

What are we going to do?

We are going to perform the following steps:

  • Invoke the lambda

Step by step guide

Here are the steps you need to follow to “Invoking the Lambda”

Invoke the lambda

lambda-invocations:
  delete-default-networking:
    function_name: DeleteDefaultNetworking
    qualifier: $LATEST
    invocation_type: Event
    depends_on:
      - name: "delete-default-networking-function"
        type: "stack"
        affinity: "stack"
    invoke_for:
      tags:
        - regions: "default_region"
          tag: "type:prod"
  • The main input field should look like this:
accounts:
  - account_id: "${AWS::PuppetAccountId}"
    name: "puppet-account"
    default_region: "eu-west-1"
    regions_enabled:
      - "eu-west-1"
    tags:
      - "type:prod"
      - "partition:eu"
stacks:
  delete-default-networking-function:
    name: "delete-default-networking-function"
    version: "v1"
    capabilities:
      - CAPABILITY_NAMED_IAM
    deploy_to:
      tags:
        - tag: "type:prod"
          regions: "default_region"
lambda-invocations:
  delete-default-networking:
    function_name: DeleteDefaultNetworking
    qualifier: $LATEST
    invocation_type: Event
    depends_on:
      - name: "delete-default-networking-function"
        type: "stack"
        affinity: "stack"
    invoke_for:
      tags:
        - regions: "default_region"
          tag: "type:prod"

AWS Committing the manifest file

Now that we have written the manifest file we are ready to commit it.

  • Set your Author name
  • Set your Email address
  • Set your Commit message

Using a good / unique commit message will help you understand what is going on later.

  • Click the Commit changes button:

What did we just do?

The YAML we pasted in the previous step told the framework to perform the following actions:

  • Invoke a lambda in the hub account named DeleteDefaultNetworking. It will be invoked each time with parameters account_id and region. It will be invoked one time for each account tagged type:prod using the account_id and default region specified for it.

Verifying the invoke

Once the pipeline has completed you can verify the lambda was invoked by verifying there is no default VPC in the default region of your account or you can check the AWS CloudWatch logs for the AWS Lambda function or you could check the execution history for the Lambda function.