Octoprint Slack Integration

Cleanup

Suggested: add this to your crontab to run @daily. This deletes all snapshots last modified a week ago.

find /home/pi/oprint/lib/python2.7/site-packages/octoprint/static/img/SNAP_* -mtime +7 -exec rm -fr {} \;

$ crontab -e
@weekly find /home/pi/oprint/lib/python2.7/site-packages/octoprint/static/img/SNAP_* -mtime +7 -exec rm -fr {} \;

Event Configuration

# Add this to your ~/.octoprint/config.yaml
# You will need to `sudo service octoprint stop`, edit, and then `sudo service octoprint start`
# If you do it with OctoPrint running, it will override/delete your changes when it shutsdown.
# Octoprint does also not reload this file while it's running.

events:
  enabled: true
  subscriptions:
  - command: /home/pi/print-finished.sh {file}
    event: PrintDone
    type: system

notify-slack.sh

#!/bin/bash

#############
# CONFIGURE #
#############
HOST="https://YOUR_PUBLIC_HOSTNAME"
STATIC="/home/pi/oprint/lib/python2.7/site-packages/octoprint/static" # change this if you're not using Octo*Pi*
SLACK_WEBHOOK_URL="REPLACE_WITH_YOURS"
SLACK_USERNAME="OctoPrint"
SLACK_ICON_URL="$HOST/static/img/logo.png"
SLACK_TEXT_BEFORE_FILENAME="Print completed: "

##############
# CALCULATED #
##############
FILE=$(basename $1)
DATE=$(date "+%s")
IMAGE_NAME="SNAP_$DATE.png"
IMAGE_URL="$HOST/static/img/$IMAGE_NAME"

# Takes a snapshot and stores it in the "static" directory for Octoprint.
curl -o $STATIC/img/$IMAGE_NAME "http://localhost:8080/?action=snapshot"

# Sends a slack notification with a URL to the snapshot.
curl -X POST -H "Content-type: application/json" --data "{\"username\": \"$SLACK_USERNAME\", \"icon_url\": \"$SLACK_ICON_URL\", \"attachments\": [{\"fallback\": \"Completed Print\", \"text\": \"$SLACK_TEXT_BEFORE_FILENAME $FILE\", \"image_url\": \"$IMAGE_URL\"}]}" $SLACK_WEBHOOK_URL

print-finished.sh

#!/bin/bash

FILE=$1

# Script gets called when gcode is finished being sent.
# This doesn't mean that the printer has finished the
# last gcode instruction. Waiting a few seconds should
# be fine and the last gcode should have been completed.
sleep 3

# Change working directory to where this file is stored.
# This assumes print-finished.sh and notifiy-slack.sh are in the same place.
# If you're just copy/pasting this, put these in your home directory.
cd "$(dirname "$0")"

./notify-slack.sh "$FILE"