azuredeploy.json

{
  "$schema": "https://schema.management.azure.com/schemas/2015-01-01/deploymentTemplate.json#",
  "contentVersion": "1.0.0.0",
  "parameters": {
    "alertName": {
      "type": "string"
    },
    "metricName": {
      "type": "string"
    },
    "appInsightsResourceName": {
      "type": "string"
    },
    "operator": {
      "type": "string",
      "defaultValue": "GreaterThan",
      "allowedValues": [
        "Equals",
        "GreaterThan",
        "LessThan"
      ]
    },
    "threshold": {
      "type": "int",
      "defaultValue": 10
    },
    "apiName": {
      "type": "string"
    },
    "alertDescription": {
      "type": "string"
    },
    "SeverityLevel": {
      "type": "int",
      "defaultValue": 3,
      "allowedValues": [ 0, 1, 2, 3, 4 ]
    },
    "frequencyInMinutes": {
      "type": "int",
      "defaultValue": 5
    },
    "timeWindowInMinutes": {
      "type": "int",
      "defaultValue": 5
    }
  },
  "variables": {
    "query": "[concat('requests | where  resultCode  matches regex \"4[0-9]{2}|5[0-9]{2}\" | where  customDimensions[\"API Name\"] == \"', parameters('apiName'), '\" | project name')]"
  },
  "resources": [
    {
      "name": "[parameters('alertName')]",
      "type": "Microsoft.Insights/scheduledQueryRules",
      "apiVersion": "2018-04-16",
      "location": "[resourceGroup().location]",
      "properties": {
        "description": "[parameters('alertDescription')]",
        "enabled": "true",
        "source": {
          "query": "[variables('query')]",
          "dataSourceId": "[resourceId('microsoft.insights/components', parameters('appInsightsResourceName'))]",
          "queryType": "ResultCount"
        },
        "schedule": {
          "frequencyInMinutes": "[parameters('frequencyInMinutes')]",
          "timeWindowInMinutes": "[parameters('timeWindowInMinutes')]"
        },
        "action": {
          "odata.type": "Microsoft.WindowsAzure.Management.Monitoring.Alerts.Models.Microsoft.AppInsights.Nexus.DataContracts.Resources.ScheduledQueryRules.AlertingAction",
          "severity": "[parameters('SeverityLevel')]",
          "trigger": {
            "thresholdOperator": "[parameters('operator')]",
            "threshold": "[parameters('threshold')]"
          }
        }
      }
    }
  ],
  "outputs": {
  }
}