slambda

Exploring Slack integration apps with AWS Lambda

Since Python's AWS Lambda version requires python 2.7, I used yyuu's pyenv to install local version of python 2.7.12. You can also use this tool to switch between python interpreters, including python 3+ and pypy2 or pypy3

pyenv install 2.7.12

and then running

pyenv local 2.7.12

This sets the python interpreter to 2.7.12 for this project only.

Let's now upgrade pip and install virtualenv

pip install -U pip
pip install virtualenv

Read the instructions at http://docs.aws.amazon.com/cli/latest/userguide/cli-chap-getting-set-up.html#cli-signup to help with the next step

Assuming you have your credentials, run:

aws configure

For now, we can practice with the cardbot example, found here: http://pertinentserpent.tumblr.com/post/147568685382/deploying-a-slack-bot-on-amazon-lambda-with

chalice new-project cardbot && cd cardbot
chalice deploy

After a number of trial and error deploys, I was able to find the minimum set of policies for deploy. Make sure to add this policy to your account. I saved the json of the policy in chalice_policies.json. You will need to apply this policy to the user you configured previously.

For secrets, I used Amazon KMS via credstash.