A powershell script that will enable http logging on an azure app service. logging will go to blob storage

Enable-HttpLoggingToBlobStorage.ps1

#Requires -Version 3.0
#Requires -Module AzureRM.Resources
#Requires -Module Azure.Storage

Param(
	[string] $Environment = 'dev',
	[string] $Location = 'uk',
  [string] $Company = 'moocowco',
  [string] $WebLogsStorageAccountKey = 'mystorageaccountkey'
)

$Environment = $Environment.ToLower()
$Location = $Location.ToLower()
$Company = $Company.ToLower()

Set-StrictMode -Version 3
Import-Module Azure

Write-Host -ForegroundColor DarkCyan '------------ Parameters --------------'
Write-Host -ForegroundColor DarkCyan '$Environment               :' $Environment
Write-Host -ForegroundColor DarkCyan '$Location                  :' $Location
Write-Host -ForegroundColor DarkCyan '$Company                   :' $Company
Write-Host -ForegroundColor DarkCyan '$WebLogsStorageAccountKey  :' $WebLogsStorageAccountKey
Write-Host



function EnableWebSiteDiagnosticsOnApis([string[]]$apps, [string]$serviceName){
    Write-Host -ForegroundColor Cyan "EnableWebSiteDiagnosticsOnApis processing '$apps' : In service '$serviceName'"
    foreach($app in $apps){        
        EnableWebSiteDiagnostics $app $serviceName
    }
}

function EnableWebSiteDiagnostics([string]$webAppName, [string]$serviceName){
    $fullWebAppName = "$webAppName-$Environment-$Location-$Company"    
    
    Write-Host -ForegroundColor Cyan "EnableWebSiteDiagnostics for '$webAppName' : '$fullWebAppName' within the service '$serviceName'"
    $weblogsAccount = "logs$Environment$Location$Company"
    $storagecontext = New-AzureStorageContext -StorageAccountName $weblogsAccount -StorageAccountKey $WebLogsStorageAccountKey -ErrorAction Stop
        
    $container = Get-AzureStorageContainer -Context $storagecontext -Name $webAppName
    if($container){
        Write-Host -ForegroundColor Cyan "  Container '$webAppName' in storageAccount '$weblogsAccount' exists."
    }
    else{
        Write-Host -ForegroundColor Cyan "  Creating container '$webAppName' in storageAccount '$weblogsAccount'"
        $container = New-AzureStorageContainer -Name $webAppName -Permission Container -Context $storageContext -Verbose -ErrorAction Stop
    }
    
    $resourceGroupName = "$serviceName-$Environment-$Location-$Company"
    $resourceConfig = Get-AzureRmResource -ResourceGroupName $resourceGroupName -ResourceType Microsoft.Web/sites/config -ResourceName "$fullWebAppName/logs" -ApiVersion 2015-08-01 -ErrorAction Stop                      

    if($resourceConfig.Properties.HttpLogs.AzureBlobStorage.Enabled){
        Write-Host -ForegroundColor Cyan "  WEBSITE_HTTPLOGGING_CONTAINER_URL already has the value:" $resourceConfig.Properties.HttpLogs.AzureBlobStorage.SasUrl
    }
    else {  
        $startTime = Get-Date -Date '2000-01-01T00:00:00'
        $expiryTime = Get-Date -Date '2100-01-01T00:00:00'
        $sasToken = New-AzureStorageContainerSASToken -StartTime $startTime -ExpiryTime $expiryTime -Context $storagecontext -Name $webAppName -Permission rwdl -Verbose -ErrorAction Stop
        $sasToken = $container.CloudBlobContainer.Uri.AbsoluteUri + $sasToken.ToString()
        Write-Host -ForegroundColor Cyan "  Set-AzureRmResource -ResourceName '$fullWebAppName/logs' with sasToken '$sasToken' -startTime '$startTime' -expiryTime '$expiryTime'"

        #$appSettingsHash = @{"WEBSITE_HTTPLOGGING_CONTAINER_URL" = $sasToken}
        $PropertiesObject = @{
            httpLogs = @{
                azureBlobStorage = @{
                    sasUrl = $sasToken;
                    enabled = $true
                }
            }
        }

        #Set-AzureWebsite -Name $fullWebAppName -Slot production -HttpLoggingEnabled $true -AppSettings $appSettingsHash -Verbose -ErrorAction Stop
        Set-AzureRmResource -ResourceName "$fullWebAppName/logs" -ResourceGroupName $resourceGroupName -ResourceType Microsoft.Web/sites/config -Properties $PropertiesObject -ApiVersion 2015-08-01 -Force -ErrorAction Stop
        Write-Host -ForegroundColor Cyan "    Set-AzureRmResource -ResourceName $fullWebAppName/logs  : complete"       
    }

    Write-Host -ForegroundColor Cyan "  EnableWebSiteDiagnostics Fin!"
}


# Its assumed the following 2 app services related storage account and resource group exists, this script will not create them
# The names of the resourcess conform to a convention that allows for a flexability in scripting
#   All resources group names are of the form ServiceName-Environment-Location-Company
#   All app service names are of the form App-Environment-Location-Company 
#   All storage accounts are in the format logEnvironmentLocationCompany

$serviceName = "food"
$apps = @("foo", "bar")                           
EnableWebSiteDiagnosticsOnApis $apps $serviceName