{tocify} $title={Table of Contents}
In the last step provide the name of channel. And we are ready to use it.
Once connected to the workspace, Configure Post message slack action
As can be seen in above image, message reached to Slack channel which was sent by Logic App.
Select Incoming webhooks and against Activate Incoming Webhooks - ON it
Followed by Http action, with method as POST, configure slack webhook url against URI and against Body -
If you see in above snap, it shows that message is posted by DemoProjectApp and not Logic app.
Introduction
In most of the interfaces there is a need send some alert message to stake holders notifying about some errors or about some specific conditions.
Recently, in one of the interface the ask was to send alert messages(warning/issue/errors) to a slack channel where the business users were able to get notified instantly.
What is Slack Channel?
Slack is a messaging app for business that connects people to the information they need. (On same line as Microsoft Teams)
And Slack channel is a dedicated space for conversations that can be created for any project, topic, or team
So how do we integrate Logic App with Slack channel? Is there a out of box connector available for Slack?
Ways to connect to Slack channel
There are couple of ways to go about it,
1. Using connector
Yes, there is a connector provided by Microsoft to connect to Slack.
Before we use connector, let's first create a workspace in Slack. Go to slack (https://slack.com/intl/en-in/get-started#/createnew)
Enter your email address and continue. Provide the code received over email and continue.
On the first step, provide the name of your workspace
Provide your name and photo(optional)
Add team members in the workspace
In the last step provide the name of channel. And we are ready to use it.
We will post message to this channel from Logic app using the slack connector
Let's create logic app
Create logic app, provide name, region and select plan type.
For the sake of demo, creating a simple logic app which will be triggered by http request and will post to slack (same message received over http trigger).
Add new action and search for Slack. Select Post message (V2) from Actions
The screen will ask you to Sign in , click on it
Click on Allow to permit Logic App to interact with Slack workspace
select the Channel name(demoproject) where you want to post messages and provide value against Message Text(body of http request)
Save the workflow and that's it, ready for testing.
Now run the logic app, with some data . And check the slack channel if message is reached.
2. Using Http action (calling slack channel webhook)
Another option is to use http action in logic app and interact with slack channel, but for that we need to create an App in slack and webhook on top of slack channel.
Go to https://api.slack.com/apps
Click on Create an App to create slack workspace app
create an app from scratch
Provide name for App and select workspace for which you want to create app
App is created, Select Incoming webhooks
Click on Add New Webhook to Workspace
Grant permission to the App ,select the channel for which you want webhook to be created.
Copy the webhook url and use it in Logic app to post messages
We will post message to this channel from Logic app over the webhook url
Let's create logic app
For the sake of demo, creating a simple logic app which will be triggered by http request and will post to slack channel over the webhook (same message received over http trigger).
Followed by Http action, with method as POST, configure slack webhook url against URI and against Body -
{
"text": "@{triggerBody()}"
}
So whatever is received over http request is pushed to slack channel.
Note: using text is mandatory and payload should be valid JSON, else it will not be accepted.
Save the logic app and test it.
If you see in above snap, it shows that message is posted by DemoProjectApp and not Logic app.
It is because we had created the webhook for channel through this App, and the url generated is associated to this App.
Summary
We saw that we have two options to post messages to slack channel and off course this will raise a question - which one to use?
What I observed is that - with slack connector you have to manually authorize every time you deploy the logic app to another environment .
And that is not required in case of webhook url, as the auth code is already part of the URL .
So, my preferred option is go with Webhook way !!!
