Set up Maester Teams Alerts

Your Maester monitoring workflow can be configured to send an adaptive card in a team channel with the summary of the Maester test results at the end of each monitoring cycle in Slack. This guide will walk you through the steps to set up Teams alerts in Maester.

There are two ways you can send alerts to Teams:

• Teams webhook workflow: Uses a Teams webhook triggered from Maester.
  • This method is simpler to set up, does not require any additional Graph permissions and users a PowerAutomate workflow. However the workflow is tied to the account that set up the workflow which may need to be updated if the account is disabled.
• Graph API: Uses a Graph API call to send the message to a Teams channel.
  • This method takes a few extra steps and requires consenting to the ChannelMessage.Send Graph permissions. There are no dependencies on PowerAutomate workflows with this option.

Teams webhook workflow

Create a Teams webhook

• To get the Webhook Uri, right-click on the channel in Teams and select Workflow.
• Create a workflow using the Post to a channel when a webhook request is received template.
• Copy the Webhook Uri provided. You will need this Uri for the next step.

Invoke-Maester with the webhook

Update your GitHub/Azure DevOps daily monitoring workflow to send the alert using the TeamChannelWebhookUri parameter with the url from the previous step.

Invoke-Maester -TeamChannelWebhookUri 'https://some-url.logic.azure.com/workflows/invoke?api-version=2016-06-01'

Alternatively, you can use the Send-MtTeamsMessage cmdlet to send the message to a specific Teams channel.

```powershell
# Get the results of the Maester tests using -PassThru
$results = Invoke-Maester -Path tests/Maester/ {...} -PassThru

# Send the summary using the results
Send-MtTeamsMessage -MaesterResults $MaesterResults TeamChannelWebhookUri 'https://some-url.logic.azure.com/workflows/invoke?api-version=2016-06-01' -Subject 'Maester Results' -TestResultsUri "https://github.com/contoso/maester/runs/123456789"

note

The TeamChannelWebhookUri should be kept secure and not shared publicly to avoid unauthorized users posting messages to your channel. If using GitHub Actions, it is recommended to store the webhook uri as a secret.

Graph API

Prerequisites

ChannelMessage.Send graph permissions

The app that sends the Teams alerts needs the ChannelMessage.Send permission to send messages. To configure

• Open the Entra admin center > Identity > Applications > App registrations
• Search for the application you created to run as the Maester DevOps Account.
• Select API permissions > Add a permission
• Select Microsoft Graph > Application permissions
• Search for ChannelMessage.Send and check the box next to the permission
• Select Add permissions
• Select Grant admin consent for [your organization]
• Select Yes to confirm

Add the Teams alert step to your workflow

Update your GitHub/Azure DevOps daily monitoring workflow to send the alert using Send-MtTeamsMessage after the Maester tests have been run.

# Get the results of the Maester tests using -PassThru
$results = Invoke-Maester -Path tests/Maester/ {...} -PassThru

# Send the summary using the results
Send-MtTeamsMessage -MaesterResults $MaesterResults -TeamId '00000000-0000-0000-0000-000000000000' -TeamChannelId '19%3A00000000000000000000000000000000%40thread.tacv2' -Subject 'Maester Results'

info

• To get the TeamId, right-click on the channel in Teams and select 'Get link to channel'. Use the value of groupId. e.g. ?groupId=< TeamId >
• To get the TeamChannelId, right-click on the channel in Teams and select 'Get link to channel'. Use the value found between channel and the channel name. e.g. /channel/< TeamChannelId >/my%20channel

Adding a link to detailed Maester results

The cmdlet has a -TestResultsUri parameter that can be used to include a link to the detailed Maester results in the alert.

To use this parameter, you need to provide the URL of the Maester results page. Use the appropriate url format based on the CI/CD system you are using.

GitHub

Link: ${{ github.server_url }}/${{ github.repository }}/actions/runs/${{ github.run_id }}

$testResultsUri = "${{ github.server_url }}/${{ github.repository }}/actions/runs/${{ github.run_id }}"

Send-MtTeamsMessage -MaesterResults $results -TestResultsUri $testResultsUri ...

Azure DevOps

Link: $(System.CollectionUri)$(System.TeamProject)/_build/results?buildId=$(Build.BuildId)

$testResultsUri = "$(System.CollectionUri)$(System.TeamProject)/_build/results?buildId=$(Build.BuildId)"

Send-MtTeamsMessage -MaesterResults $results -TestResultsUri $testResultsUri ...