# Sending alarm event notifications to Slack channels using Incoming Webhook URLs **URL:** \ **Category:** Ignition\ **Tags:** ignition81\ **Created:** [October 17, 2022, 7:20pm UTC](https://forum.inductiveautomation.com/t/sending-alarm-event-notifications-to-slack-channels-using-incoming-webhook-urls/65305 "2022-10-17T19:20:59Z")\ **Posts on this page:** 3\ **Page:** 1
**Author:** ![tyler.bennett](https://avatars.discourse-cdn.com/v4/letter/t/f04885/32.png) [@tyler.bennett](https://forum.inductiveautomation.com/u/tyler.bennett)\ **Post date:** [October 17, 2022, 7:20pm UTC](https://forum.inductiveautomation.com/t/sending-alarm-event-notifications-to-slack-channels-using-incoming-webhook-urls/65305/1 "2022-10-17T19:20:59Z")
Here are some quick and easy instructions for sending alarm event notifications to Slack channels, using [Slack's Incoming Webhook URLs](https://api.slack.com/messaging/webhooks)... Note, the implementation described here directs event notifications to one or more slack channels and does not integrate directly with Ignition's user, schedules and roster configurations. If you want "first-class integration" with alarm pipeline notification blocks take a look at at the linked forum post instead: > [@Slack Notifications - Alarming](https://forum.inductiveautomation.com/t/slack-notifications-alarming/60844): > > I am trying to implement Slack notifications for alarms from Ignition on a really large project I see this in one of the IA example readmes- “Users to be notified need to have an outgoing webhook registered through Slack’s API, then added to their user profile in Ignition.” I’m confused as to where this would be on the Gateway or something, FWIW the project I’m working on integrates with AD but even without that there just isn’t a field anywhere for webhooks when I just look at a blank project … ...and when you figure it out please add a step-by-step guide for that to the Ignition forums. While looking into that I came across the method below as an easier and potentially more versatile option that met the need I had. Sharing it here for the benefit of others, please point out corrections and/or potential improvements. **Instructions to create a slack webhook URL:** Reference: [https://api.slack.com/messaging/webhooks](https://api.slack.com/messaging/webhooks) - Using a web browser open: [https://slack.com/signin](https://slack.com/signin) - Ensure you are signed into the correct slack workspace. - On another tab in the same browser open: [https://api.slack.com/apps](https://api.slack.com/apps) - Click the **Create New App** button, and follow prompts as outlined below - Select the **From scratch** option - App name: _choose your bot name_ - Pick a workspace to develop your app in: - You should now be on the **Basic Information** page for the newly created App. - If you need to find this page in the future just select the app from your app management dashboard: [https://api.slack.com/apps](https://api.slack.com/apps) - Enable incoming webhooks… - Select **Incoming webhooks** from the left navigation menu. - Click the **Activate Incoming Webhooks** toggle to switch it on (if not already on). - Create an Incoming Webhook… - Click the **Add New Webhook to Workspace** button, and follow prompts… - Select the channel: - Then, click the **Allow** button. - You should now see an updated **Incoming Webhooks** page with a new entry under the **Webhook URLs for Your Workspace** section, associated with the specified channel. - Copy the Webhook URL for the channel to use in integrating slack notifications in SCADA. To post alarm event notifications from Ignition to the slack channel for which you created the incoming webhook, add a script block to a notification pipleline and use the [system.net.httpPost()](https://docs.inductiveautomation.com/display/DOC81/system.net.httpPost) function specifying the webhook URL as the url parameter of the function. **Simple 'Hello World' example:** ```python def handleAlarm(event): webhookURL = 'https://hooks.slack.com/services/youneedyourownwebhookURL' jsonData = system.util.jsonEncode({"text":Hello World'}) system.net.httpPost(url=webhookURL, contentType="application/json", postData=jsonData) ``` ### Another example: Here is a more complex example. Slack specific information on message composition can be found here: [https://api.slack.com/messaging/composing](https://api.slack.com/messaging/composing) ````python def handleAlarm(event): # Purpose: Used to send alarm event notification content to one or more slack channels # Notes: For each targeted slack channel a Webhook URL must be created and included in the list of Webhook URLs # Define a list of Slack API Webhook URLs that that are to receive the alarm event notification # https://api.slack.com/messaging/webhooks webhookURLs= [ 'https://hooks.slack.com/services/youneedyourownwebhookURL1' # Slack Channel #1 , 'https://hooks.slack.com/services/youneedyourownwebhookURL2' # Slack Channel #2 ] # Determine the plain text version of the notification subject line subjectPlain = '{} {} - {} - {}'.format(event['projectName'], str(event['pipelineName']).upper(), event['label'], event['eventState']) # Determine the formatted (mrkdown) version of the notification subject line # https://api.slack.com/messaging/composing/layouts # https://app.slack.com/block-kit-builder subjectMrkdwn = '{} {} - {} - *{}*'.format(event['projectName'], str(event['pipelineName']).upper(), event['label'], event['eventState']) # Determine the plain text version of the notification body bodyPlain = ( "Label: " + str(event['label']) + "\n" + "Name: " + str(event['name']) + "\n" + "State: " + str(event['state']) + "\n" + "Priority: " + str(event['priority']) + "\n" + "Path: " + str(event['displayPathOrSource']) + "\n" + "Notes: " + str(event['notes']) + "\n" + "---" + "\n" + "Event State: " + str(event['eventState']) + "\n" + "Event Time: " + str(event['eventTime']) + "\n" + "Event Value: " + str(event['eventValue']) + "\n" + "---" + "\n" + "Active Time: " + str(event['activeTime']) + "\n" + "Clear Time: " + str(event['clearTime']) + "\n" + "Ack Time: " + str(event['ackTime']) + "\n" + "Acked by: " + str(event['ackUserName']) + "\n" + "---" + "\n" + "Project: " + event['projectName'] + "\n" + "Pipeline: " + event['pipelineName'] ) # Determine the formatted (mrkdwn) version of the notification body bodyMrkdwn = "```" + bodyPlain + "```" # Prepare notification content to be sent via slack. text = subjectPlain + "\n" + bodyPlain blocks = [{'type':'section', 'text':{'type':'mrkdwn', 'text':subjectMrkdwn + "\n" + bodyMrkdwn }}] postData = system.util.jsonEncode({"text":text, 'blocks': blocks}) # Send to each slack webhook URL (slack channel) for url in webhookURLs: system.net.httpPost(url=url, contentType="application/json", postData=postData) ```` ---
**Author:** ![paul-griffith](https://sea1.discourse-cdn.com/inductiveautomation/user_avatar/forum.inductiveautomation.com/paul-griffith/32/37249_2.png) [@paul-griffith](https://forum.inductiveautomation.com/u/paul-griffith)\ **Post date:** [October 18, 2022, 3:36pm UTC](https://forum.inductiveautomation.com/t/sending-alarm-event-notifications-to-slack-channels-using-incoming-webhook-urls/65305/2 "2022-10-18T15:36:36Z")
Nice writeup! For posterity, the instructions for the SDK example you linked would be basically your first steps, to get a webhook from Slack. Then in Ignition, you go to each user you created a webhook for (or create a fake user for each channel you want to notify), and set the webhook URL in their "contact info". Then the rest of the alarming system "just works" - you can add users to rosters, use rosters in notification blocks, etc. ---
**Author:** ![Mitesh\_Maniar](https://avatars.discourse-cdn.com/v4/letter/m/45deac/32.png) [@Mitesh\_Maniar](https://forum.inductiveautomation.com/u/Mitesh_Maniar)\ **Post date:** [August 28, 2024, 4:51am UTC](https://forum.inductiveautomation.com/t/sending-alarm-event-notifications-to-slack-channels-using-incoming-webhook-urls/65305/3 "2024-08-28T04:51:09Z")
do we need to have alarm notification module to setup this ?