lambda-slackbot-example

This is an example of how to get started with a slackbot with AWS lambda through zappa.

Prepare local development environment

pipenv sync --dev

zappa initial setup

1. create initial zappa_settings file:

   Populate ${BUCkET_NAME} with a name like, tobor-zappa-SOMERANDOMSTRING The bucket will be created on deploy. Populate ${SLACK_TOKEN} with token obatined from https://api.slack.com/tokens

   {
       "dev": {
           "aws_region": "us-west-2",
           "profile_name": "default",
           "project_name": "tobor",
           "runtime": "python3.6",
           "s3_bucket": "${BUCKET_NAME}",
           "apigateway_enabled": false,
           "keep_warm": false,
           "environment_variables": {
               "SLACK_API_TOKEN": "${SLACK_TOKEN}"
           },
           "events": [{
              "function": "tobor.event_handlers.post_random_quote",
              "expression": "cron(0 0 ? * MON,WED,FRI *)"
           }]
       }
   }
   
   

2. Deploy application for the first time through zappa:

   NOTE: Your defined profile must have the proper permissions in order to deploy the lambda function and related resources.

   # from the pipenv shell
   zappa deploy
   Calling deploy for stage dev..
   Creating tobor-dev-ZappaLambdaExecutionRole IAM Role..
   Creating zappa-permissions policy on tobor-dev-ZappaLambdaExecutionRole IAM Role.
   Downloading and installing dependencies..
    - sqlite==python36: Using precompiled lambda package
   Packaging project as zip.
   Uploading tobor-dev-1544627201.zip (5.4MiB)..
   100%|████████████████████████████████████████████████████████████████████████████████████████| 5.61M/5.61M [00:04<00:00, 1.22MB/s]
   Scheduling..
   Scheduled tobor-dev-tobor.event_handlers.post_random_quote with expression cron(0 0 ? * MON,WED,FRI *)!
   Deployment complete!