AzureScout

1.0.0

Modules/Public/InventoryModules/Monitor/MetricAlertRules.ps1

                                <#

.Synopsis

Inventory for Azure Monitor Metric Alert Rules

.DESCRIPTION

This script consolidates information for all Azure Monitor metric-based alert rules.

Captures threshold conditions, severity, evaluation frequency, and action groups.

Excel Sheet Name: Metric Alerts

.Link

https://github.com/thisismydemo/azure-scout/Modules/Public/InventoryModules/Monitoring/MetricAlertRules.ps1

.COMPONENT

    This PowerShell Module is part of Azure Scout (AZSC).

.CATEGORY Monitor

.NOTES

Version: 1.0.0

First Release Date: February 24, 2026

Authors: AzureScout Contributors

#>

<######## Default Parameters. Don't modify this ########>

param($SCPath, $Sub, $Intag, $Resources, $Retirements, $Task ,$File, $SmaResources, $TableStyle, $Unsupported)

If ($Task -eq 'Processing')

{

    <######### Insert the resource extraction here ########>

        $metricAlerts = $Resources | Where-Object {$_.TYPE -eq 'microsoft.insights/metricalerts'}

    <######### Insert the resource Process here ########>

    if($metricAlerts)

        {

            $tmp = foreach ($1 in $metricAlerts) {

                $ResUCount = 1

                $sub1 = $SUB | Where-Object { $_.Id -eq $1.subscriptionId }

                $data = $1.PROPERTIES

                $Tags = if(![string]::IsNullOrEmpty($1.tags.psobject.properties)){$1.tags.psobject.properties}else{'0'}

                # Parse criteria

                $criteria = $data.criteria

                $criteriaType = if ($criteria.'odata.type') {

                    $criteria.'odata.type' -replace 'Microsoft.Azure.Monitor.', ''

                } else { 'SingleResourceMultipleMetricCriteria' }

                # Parse conditions

                $conditions = @()

                if ($criteria.allOf) {

                    foreach ($condition in $criteria.allOf) {

                        $metricName = $condition.metricName

                        $operator = $condition.operator

                        $threshold = $condition.threshold

                        $timeAggregation = $condition.timeAggregation

                        $conditions += "$metricName $operator $threshold ($timeAggregation)"

                    }

                }

                $conditionsStr = if ($conditions.Count -gt 0) { $conditions -join '; ' } else { 'N/A' }

                # Parse target resources

                $targetResources = @()

                if ($data.scopes) {

                    foreach ($scope in $data.scopes) {

                        $resourceName = ($scope -split '/')[-1]

                        $targetResources += $resourceName

                    }

                }

                $targetStr = if ($targetResources.Count -gt 0) { $targetResources -join ', ' } else { 'N/A' }

                # Parse action groups

                $actionGroups = @()

                if ($data.actions) {

                    foreach ($action in $data.actions) {

                        if ($action.actionGroupId) {

                            $agName = ($action.actionGroupId -split '/')[-1]

                            $actionGroups += $agName

                        }

                    }

                }

                $actionGroupStr = if ($actionGroups.Count -gt 0) { $actionGroups -join ', ' } else { 'None' }

                # Get severity

                $severity = switch ($data.severity) {

                    0 { 'Critical' }

                    1 { 'Error' }

                    2 { 'Warning' }

                    3 { 'Informational' }

                    4 { 'Verbose' }

                    default { $data.severity }

                }

                # Parse evaluation frequency and window

                $evaluationFrequency = if ($data.evaluationFrequency) {

                    $data.evaluationFrequency

                } else { 'PT1M' }

                $windowSize = if ($data.windowSize) {

                    $data.windowSize

                } else { 'PT5M' }

                # Get enabled status

                $enabled = if ($data.enabled -eq $true) { 'Enabled' } else { 'Disabled' }

                $autoMitigate = if ($data.autoMitigate -eq $true) { 'Yes' } else { 'No' }

                foreach ($Tag in $Tags) {

                    $obj = @{

                        'ID'                        = $1.id;

                        'Subscription'              = $sub1.Name;

                        'Resource Group'            = $1.RESOURCEGROUP;

                        'Alert Rule Name'           = $1.NAME;

                        'Description'               = if ($data.description) { $data.description } else { 'N/A' };

                        'Location'                  = $1.LOCATION;

                        'Status'                    = $enabled;

                        'Severity'                  = $severity;

                        'Criteria Type'             = $criteriaType;

                        'Conditions'                = $conditionsStr;

                        'Target Resources'          = $targetStr;

                        'Target Resource Type'      = if ($data.targetResourceType) { $data.targetResourceType } else { 'N/A' };

                        'Evaluation Frequency'      = $evaluationFrequency;

                        'Window Size'               = $windowSize;

                        'Auto Mitigate'             = $autoMitigate;

                        'Action Groups'             = $actionGroupStr;

                        'Resource U'                = $ResUCount;

                        'Tag Name'                  = [string]$Tag.Name;

                        'Tag Value'                 = [string]$Tag.Value

                    }

                    $obj

                    if ($ResUCount -eq 1) { $ResUCount = 0 }

                }

            }

            $tmp

        }

}

<######## Resource Excel Reporting Begins Here ########>

Else

{

    <######## $SmaResources.(RESOURCE FILE NAME) ##########>

    if($SmaResources)

    {

        $TableName = ('MetricAlertsTable_'+(($SmaResources.'Resource U' | Measure-Object -Sum).Sum))

        $Style = New-ExcelStyle -HorizontalAlignment Center -AutoSize -NumberFormat '0'

        $StyleExt = New-ExcelStyle -HorizontalAlignment Left -Range E:E,J:J,K:K -Width 40 -WrapText

        $Exc = New-Object System.Collections.Generic.List[System.Object]

        $Exc.Add('Subscription')

        $Exc.Add('Resource Group')

        $Exc.Add('Alert Rule Name')

        $Exc.Add('Description')

        $Exc.Add('Location')

        $Exc.Add('Status')

        $Exc.Add('Severity')

        $Exc.Add('Criteria Type')

        $Exc.Add('Conditions')

        $Exc.Add('Target Resources')

        $Exc.Add('Target Resource Type')

        $Exc.Add('Evaluation Frequency')

        $Exc.Add('Window Size')

        $Exc.Add('Auto Mitigate')

        $Exc.Add('Action Groups')

        if($InTag)

            {

                $Exc.Add('Tag Name')

                $Exc.Add('Tag Value')

            }

        $Exc.Add('Resource U')

        [PSCustomObject]$SmaResources |

        ForEach-Object { $_ } | Select-Object $Exc |

        Export-Excel -Path $File -WorksheetName 'Metric Alerts' -AutoSize -MaxAutoSizeRows 100 -TableName $TableName -TableStyle $tableStyle -Style $Style, $StyleExt

    }

}