AzureIoTDemoCreation.bicep

AzureIoTDemoCreation.bicep

//    Copyright (c) 2022
//    Author      : Bruno Capuano
//    Create Time : 2022 July
//    Change Log  :
//
//    The MIT License (MIT)
//
//    Permission is hereby granted, free of charge, to any person obtaining a copy
//    of this software and associated documentation files (the "Software"), to deal
//    in the Software without restriction, including without limitation the rights
//    to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
//    copies of the Software, and to permit persons to whom the Software is
//    furnished to do so, subject to the following conditions:
//
//    The above copyright notice and this permission notice shall be included in
//    all copies or substantial portions of the Software.
//
//    THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
//    IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
//    FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
//    AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
//    LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
//    OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
//    THE SOFTWARE.

@description('Define the project name or prefix for all objects.')
@minLength(1)
@maxLength(11)
param demoName string = 'elbruno'

@description('The datacenter to use for the deployment.')
param location string = resourceGroup().location

@description('The SKU to use for the IoT Hub.')
param skuName string = 'S1'

@description('The number of IoT Hub units.')
param skuUnits int = 1

@description('Partitions used for the event stream.')
param d2cPartitions int = 4

// IoT Hub and Storage Account configuration
var iotHubName = '${demoName}Hub${uniqueString(resourceGroup().id)}'
var storageAccountName = '${toLower(demoName)}${uniqueString(resourceGroup().id)}'
var storageEndpoint = '${demoName}StorageEndpont'
var storageContainerName = '${toLower(demoName)}results'

// Azure Function configuration
@description('The language worker runtime to load in the function app.')
@allowed([
  'node'
  'dotnet'
  'java'
  'python'
])
param runtime string = 'python'

var functionAppName = demoName
var hostingPlanName = demoName
var applicationInsightsName = demoName
var functionWorkerRuntime = runtime

// Storage Account Creation
resource storageAccount 'Microsoft.Storage/storageAccounts@2021-08-01' = {
  name: storageAccountName
  location: location
  sku: {
    name: 'Standard_LRS'
  }
  kind: 'Storage'
}

resource container 'Microsoft.Storage/storageAccounts/blobServices/containers@2021-08-01' = {
  name: '${storageAccountName}/default/${storageContainerName}'
  properties: {
    publicAccess: 'None'
  }
  dependsOn: [
    storageAccount
  ]
}

// IoT Hub Creation
resource IoTHub 'Microsoft.Devices/IotHubs@2021-07-02' = {
  name: iotHubName
  location: location
  sku: {
    name: skuName
    capacity: skuUnits
  }
  properties: {
    eventHubEndpoints: {
      events: {
        retentionTimeInDays: 1
        partitionCount: d2cPartitions
      }
    }
    routing: {
      endpoints: {
        storageContainers: [
          {
            connectionString: 'DefaultEndpointsProtocol=https;AccountName=${storageAccountName};EndpointSuffix=${environment().suffixes.storage};AccountKey=${storageAccount.listKeys().keys[0].value}'
            containerName: storageContainerName
            fileNameFormat: '{iothub}/{partition}/{YYYY}/{MM}/{DD}/{HH}/{mm}'
            batchFrequencyInSeconds: 100
            maxChunkSizeInBytes: 104857600
            encoding: 'JSON'
            name: storageEndpoint
          }
        ]
      }
      routes: [
        {
          name: 'ContosoStorageRoute'
          source: 'DeviceMessages'
          condition: 'level="storage"'
          endpointNames: [
            storageEndpoint
          ]
          isEnabled: true
        }
      ]
      fallbackRoute: {
        name: '$fallback'
        source: 'DeviceMessages'
        condition: 'true'
        endpointNames: [
          'events'
        ]
        isEnabled: true
      }
    }
    messagingEndpoints: {
      fileNotifications: {
        lockDurationAsIso8601: 'PT1M'
        ttlAsIso8601: 'PT1H'
        maxDeliveryCount: 10
      }
    }
    enableFileUploadNotifications: false
    cloudToDevice: {
      maxDeliveryCount: 10
      defaultTtlAsIso8601: 'PT1H'
      feedback: {
        lockDurationAsIso8601: 'PT1M'
        ttlAsIso8601: 'PT1H'
        maxDeliveryCount: 10
      }
    }
  }
}

// Azure Function Creation

resource hostingPlan 'Microsoft.Web/serverfarms@2021-03-01' = {
  name: hostingPlanName
  location: location
  sku: {
    name: 'Y1'
    tier: 'Dynamic'
  }
  properties: {}
}

resource functionApp 'Microsoft.Web/sites@2021-03-01' = {
  name: functionAppName
  location: location
  kind: 'functionapp'
  identity: {
    type: 'SystemAssigned'
  }
  properties: {
    serverFarmId: hostingPlan.id
    siteConfig: {
      appSettings: [
        {
          name: 'AzureWebJobsStorage'
          value: 'DefaultEndpointsProtocol=https;AccountName=${storageAccountName};EndpointSuffix=${environment().suffixes.storage};AccountKey=${storageAccount.listKeys().keys[0].value}'
        }
        {
          name: 'WEBSITE_CONTENTAZUREFILECONNECTIONSTRING'
          value: 'DefaultEndpointsProtocol=https;AccountName=${storageAccountName};EndpointSuffix=${environment().suffixes.storage};AccountKey=${storageAccount.listKeys().keys[0].value}'
        }
        {
          name: 'WEBSITE_CONTENTSHARE'
          value: toLower(functionAppName)
        }
        {
          name: 'FUNCTIONS_EXTENSION_VERSION'
          value: '~2'
        }
        {
          name: 'WEBSITE_NODE_DEFAULT_VERSION'
          value: '~10'
        }
        {
          name: 'APPINSIGHTS_INSTRUMENTATIONKEY'
          value: applicationInsights.properties.InstrumentationKey
        }
        {
          name: 'FUNCTIONS_WORKER_RUNTIME'
          value: functionWorkerRuntime
        }
      ]
      ftpsState: 'FtpsOnly'
      minTlsVersion: '1.2'
    }
    httpsOnly: true
  }
}

resource applicationInsights 'Microsoft.Insights/components@2020-02-02' = {
  name: applicationInsightsName
  location: location
  kind: 'web'
  properties: {
    Application_Type: 'web'
    Request_Source: 'rest'
  }
}