The Slack Chat Bot is a serverless, event-driven bot designed using the OpenWhisk open source project.

This bot is designed to post slack messages to OpenWhisk dev list (dev@openwhisk.incubator.apache.org) on a daily basis so that OpenWhisk developers receives a daily digest of conversations, one digest per slack channel. A daily digest will bring one whole day worth of updates in a single email on dev list and are archived on dev list for reference purposes. A daily digest contains filtered and formatted slack messages in easy to read and searchable format. The messages like someone logging in or logging out, some user joining a channel or leaving the channel, status updates, etc are filtered to create a meaningful and concise digest.

Proposed Architecture

The Slack Chat Bot is designed on a sequence of two dependent actions (like microservices) which is invoked by an internal OpenWhisk alarm (similar to a cron job) trigger. Both of these actions are implemented in Python, using the Python runtime provided by OpenWhisk. Here is what action sequence does with its triggered flow:

Invoked once a day by an Alarm Trigger