cat-button

🐈 🍖 📢 #️⃣

Post a message to Slack when the cats have been fed.

Development and deployment - macOS

All of this is terrible. We need to build a deployment package to get a usable environment with slackclient in AWS Lambda.

The lambda env needs Python 3.6 to work, but the latest version of Python 3 is 3.7 which is what brew provides.

To switch Python environments (from Stack Overflow) we need to run the following once to install Python 3.6.5:

brew unlink python
brew install https://raw.githubusercontent.com/Homebrew/homebrew-core/f2a764ef944b1080be64bd88dca9a1d80130c558/Formula/python.rb

Then to actually switch our Python version for local development:

brew switch python 3.6.5_1

⚠️ Note switching this breaks almost everything else installed by brew, don't forget to switch back!

Create a virtualenv if necessary with:

bash
virtualenv --python=python3.6 cat_button_venv

Install requirements:

source cat_button_venv/bin/activate
pip install -r requirements.txt

Then to create the .zip deployment package from the root of this repo run:

./package.fish

Then upload the deployment package cat_button.zip to an AWS lambda function and create a SLACK_API_TOKEN environment variable with a token like xoxp-xxxx-xxxx-xxxx-xxxx.

Finally to switch back to a generally working Python environment:

brew switch python 3.7.0