Global Entry Checker

A serverless project to regularly check the soonest appointment time for Global Entry using AWS SAM.

Prequisites:

Docker Desktop
Python (preferably managed via pyenv or conda).
The AWS SAM client

Set up a Python environment:

You can use either conda or pyenv to set up a Python environment that will allow SAM to find the requisite version of Python for the lambda runtime (3.9).

Conda:

conda create --name global-entry python=3.9 --channel conda-forge --channel defaults

Deployment

sam build
sam deploy --guided

The SAM template has a number of parameters. These include:

The project name
A comma separated list of Global Entry location IDs to query.
An email address to which the SNS topic will send notifications.

After running sam deploy --guided for the first time, the values entered will be saved in sam-app/samconfig.toml. These values will ensure future invocations find these values.

Note - the SNS subscription confirmation email may be identified as span by an email client.

Determining location IDs for specific locations:

Navigate to the Global Entry appointment schedule page.
Determine a location that you want to get updates about.
Open the Chrome developer tools (or equivalent) and open the Network tab.
Click on your location of interest.
Find the new request to the schedulerapi/slots endpoint. The payload of this request will include a locationId.

TODO: