How to Perform an Emergency Reboot with IGEL UMS

Written by Milan Potrok (IGEL COMMUNITY MEMBER OF THE YEAR) and Jeff, IGEL COMMUNITY MEMBER & Insider

Hello, fellow tech enthusiasts!

I've been working on a fun and geeky project that combines the power of Slack, shell scripting, and the awesomeness of the AWTRIX clock. I wanted a way to keep track of the active users in our Slack workspace and display this count live on my AWTRIX clock using MQTT. Why? Because every member of the IGEL Community is so important that I want to see every new one right on my clock! Here’s a step-by-step breakdown of how I did it:

The Script: Counting Active Slack Users and Updating AWTRIX

First, let’s take a look at the script that makes this magic happen:

#!/bin/sh

# Slack API Script with Comprehensive Features

# This script handles counting active Slack users and sending the data to an AWTRIX clock via MQTT.

# Variables

SLACK_TOKEN="xoxb-xxxxxxxxxxx-xxxxxxxxxxxxx-xxxxxxxxxxxxxxxxx" # Your Slack API token

LOG_FILE="/var/log/slack-api.log"

CCU_USER="api_user" # Your CCU user

CCU_PASSWORD="your_password" # Your CCU password

CCU_ENDPOINT="http://your_ccu_endpoint" # Your CCU endpoint

SLACKUSERCOUNT_VARIABLE="S99-Work-SlackAPIUserCount"

# Log file with date

LOG_DATE=$(date +%Y-%m-%d)

LOG_FILE="/var/log/slack-api-$LOG_DATE.log"

# Function to log messages

log_message() {

    echo "$(date): $1" >> "$LOG_FILE"

}

# Function to count active Slack users and update CCU

count_and_update_slack_users() {

    local cursor=""

    local total_active_users=0

    while :

    do

        response=$(curl -s -H "Authorization: Bearer $SLACK_TOKEN" "https://slack.com/api/users.list?limit=1000&cursor=$cursor")

        [ $? -ne 0 ] && return 1

        active_user_count=$(echo $response | jq '[.members[] | select(.deleted == false)] | length')

        total_active_users=$((total_active_users + active_user_count))

        cursor=$(echo $response | jq -r '.response_metadata.next_cursor')

        if [ -z "$cursor" ]; then

            break

        fi

    done

    log_message "Total active Slack users: $total_active_users"

    echo "$total_active_users"

    local url="$CCU_ENDPOINT?Antwort=dom.GetObject(\"$SLACKUSERCOUNT_VARIABLE\").State(\"$total_active_users\")"

    response=$(curl -k --user "$CCU_USER:$CCU_PASSWORD" "$url")

    if [ -z "$response" ]; then

        log_message "Error updating CCU with Slack user count"

        return 1

    fi

    log_message "Updated CCU with Slack user count: $total_active_users"

}

# Main execution

main() {

    log_message "Starting API script."

    read_last_run_date

    TODAY=$(date +%Y-%m-%d)

    if [ "$LAST_RUN_DATE" != "$TODAY" ]; then

        write_counters

    fi

    local auth_code=$(get_auth_code)

    [ $? -ne 0 ] && return 1

    local access_token=$(get_access_token "$auth_code")

    [ $? -ne 0 ] && return 1

    update_last_run_date

    log_message "End of run - Counter values: Daily Requests: $DAILY_REQUESTS, Token Refreshes: $TOKEN_REFRESHES"

    # Process script arguments for further actions

    case "$1" in

        count_active_slack_users)

            count_and_update_slack_users

            ;;

        *)

            echo "Unknown command: $1"

            return 1

            ;;

    esac

    log_message "API script execution completed."

}

# Start the script with provided arguments

main "$@"

Disclaimer

The content of this post is provided without any warranty or support by IGEL Technology. This information is derived from the IGEL Community, and not IGEL Technology. IGEL Technology will not provide any packages, instructions, or support for processes, scripts, or other content contained in this post. Use at your own risk!

Hope it works well, please let me know if you have some questions or comments!

http://www.igelcommunity.com