template.json

{
  "$schema": "https://schema.management.azure.com/schemas/2015-01-01/deploymentTemplate.json#",
  "contentVersion": "1.0.0.0",
  "parameters": {
    "uniqueResourceNameSuffix": {
      "type": "string",
      "defaultValue": "[uniqueString(subscription().subscriptionId, resourceGroup().id)]",
      "metadata": {
        "description": "The suffix to add to resource names that require global uniqueness."
      }
    },
    "applicationInsightsLocation": {
      "type": "string",
      "defaultValue": "westus2",
      "allowedValues": [
        "eastus",
        "southcentralus",
        "westus2",
        "northeurope",
        "westeurope",
        "southeastasia"
      ],
      "metadata": {
        "description": "The location in which to deploy Application Insights, since it supports a subset of Azure regions."
      }
    }
  },
  "variables": {
    "functionsAppServicePlanName": "MonitoringFunctions",
    "functionsAppName": "[concat('fn', parameters('uniqueResourceNameSuffix'))]",
    "functionsStorageAccountName": "[concat('fn', parameters('uniqueResourceNameSuffix'))]",
    "functionsStorageAccountResourceId": "[resourceId('Microsoft.Storage/storageAccounts', variables('functionsStorageAccountName'))]",
    "applicationInsightsName": "CustomMetrics"
  },
  "resources": [
    {
      "name": "[variables('functionsStorageAccountName')]",
      "type": "Microsoft.Storage/storageAccounts",
      "location": "[resourceGroup().location]",
      "apiVersion": "2018-02-01",
      "sku": {
        "name": "Standard_LRS"
      },
      "kind": "StorageV2",
      "properties": {
        "accessTier": "Hot",
        "supportsHttpsTrafficOnly": true,
        "encryption": {
          "services": {
            "blob": {
              "enabled": true
            }
          },
          "keySource": "Microsoft.Storage"
        }
      }
    },
    {
      "name": "[variables('functionsAppServicePlanName')]",
      "type": "Microsoft.Web/serverfarms",
      "location": "[resourceGroup().location]",
      "apiVersion": "2016-09-01",
      "sku": {
        "name": "Y1",
        "tier": "Dynamic",
        "size": "Y1",
        "family": "Y",
        "capacity": 0
      },
      "kind": "functionapp",
      "properties": {
        "workerTierName": null,
        "adminSiteName": null,
        "hostingEnvironmentProfile": null,
        "perSiteScaling": false,
        "reserved": false,
        "targetWorkerCount": 0,
        "targetWorkerSizeId": 0
      }
    },
    {
      "name": "[variables('functionsAppName')]",
      "type": "Microsoft.Web/sites",
      "location": "[resourceGroup().location]",
      "apiVersion": "2016-08-01",
      "kind": "functionapp",
      "properties": {
        "enabled": true,
        "serverFarmId": "[resourceId('Microsoft.Web/serverfarms', variables('functionsAppServicePlanName'))]",
        "reserved": false,
        "siteConfig": {
          "ftpsState": "Disabled"
        }
      },
      "identity": {
        "type": "SystemAssigned"
      },
      "resources": [
        {
          "name": "appsettings",
          "type": "config",
          "apiVersion": "2014-11-01",
          "properties": {
            "FUNCTIONS_EXTENSION_VERSION": "~2",
            "AzureWebJobsDashboard": "[concat('DefaultEndpointsProtocol=https;AccountName=', variables('functionsStorageAccountName'), ';AccountKey=', listKeys(variables('functionsStorageAccountResourceId'),'2015-05-01-preview').key1)]",
            "AzureWebJobsStorage": "[concat('DefaultEndpointsProtocol=https;AccountName=', variables('functionsStorageAccountName'), ';AccountKey=', listKeys(variables('functionsStorageAccountResourceId'),'2015-05-01-preview').key1)]",
            "APPINSIGHTS_INSTRUMENTATIONKEY": "[reference(resourceId('Microsoft.Insights/components', variables('applicationInsightsName')), '2014-04-01').InstrumentationKey]"
          },
          "dependsOn": [
            "[resourceId('Microsoft.Web/sites', variables('functionsAppName'))]",
            "[resourceId('Microsoft.Storage/storageAccounts', variables('functionsStorageAccountName'))]",
            "[resourceId('Microsoft.Insights/components', variables('applicationInsightsName'))]"
          ]
        },
        {
          "name": "AddMetric",
          "type": "functions",
          "apiVersion": "2015-08-01",
          "properties": {
            "config": {
              "bindings": [
                {
                  "name": "timer",
                  "type": "timerTrigger",
                  "direction": "in",
                  "schedule": "0 */5 * * * *"
                }
              ],
              "disabled": false
            },
            "files": {
              "run.csx": "using Microsoft.ApplicationInsights;\r\nusing Microsoft.ApplicationInsights.Metrics;\r\nusing Microsoft.Extensions.Logging;\r\n\r\nprivate static TelemetryClient TelemetryClient = new TelemetryClient();\r\nprivate static Random Random = new Random();\r\n\r\npublic static void Run(TimerInfo timer, ILogger log)\r\n{\r\n    var randomValue = (int)Random.Next(0, 10);\r\n    TelemetryClient.GetMetric(\"My Metric Name\").TrackValue(randomValue);\r\n}\r\n",
              "function.proj": "<Project Sdk=\"Microsoft.NET.Sdk\">\r\n  <PropertyGroup>\r\n    <TargetFramework>netstandard2.0<\/TargetFramework>\r\n  <\/PropertyGroup>\r\n  <ItemGroup>\r\n    <PackageReference Include=\"Microsoft.ApplicationInsights\" Version=\"2.8.1\"\/>\r\n  <\/ItemGroup>\r\n<\/Project>\r\n"
            }
          },
          "dependsOn": [
            "[resourceId('Microsoft.Web/sites', variables('functionsAppName'))]"
          ]
        }
      ],
      "dependsOn": [
        "[resourceId('Microsoft.Web/serverfarms', variables('functionsAppServicePlanName'))]"
      ]
    },

    {
      "name": "[variables('applicationInsightsName')]",
      "type": "Microsoft.Insights/components",
      "apiVersion": "2014-04-01",
      "location": "[parameters('applicationInsightsLocation')]",
      "kind": "other",
      "properties": {
        "applicationId": "[variables('applicationInsightsName')]"
      }
    }
  ]
}