Pre-requisites

In order to run this deployment you will need:

• Python 3
• Terraform 0.12
• An AWS account with your local credentials set
• A Google sheet in which to insert the data
• A Service account with Edit permissions on the above sheet

Creating the Service Account

• Log in to the developer console
• Create a new project
• Enable the Google Sheets API
• Navigate to Credentials and create a new Service Account
• Give it the name and description you want
• Leave the role blank
• Create a new key (JSON)
• This will automatically download the credentials file, rename it locally to gsheets.json and move it into the src directory
• In your sheet, share access with the service account's Email as an Editor

Building the Lambda bundle

From the root of this repository, run the following commands to install all required dependencies and create the packaged zip that we'll upload to AWS.

make install
make build

Deploying the infrastructure

Navigate into the terraform directory and run the following:

terraform init
terraform apply

This will deploy:

• the lambda itself
• a basic IAM role for the lambda (write to cloudwatch logs)
• an API gateway with a single route/method and lambda integration

Terraform will output the URL to be registered with the Monzo API. You can also retrieve it later by running terraform output endpoint

Registering your webhook with Monzo

With the URL output from the previous section,

• Make your way to the Monzo developers page
• Go to "Register webhook" and replace the url in the textbox with yours, click Send
• You can validate by running the "List webhooks" action