Private/Initialization.ps1
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function Initialize-Nanite { # Create a global configuration. $Global:configuration = [PSCustomObject]@{ Output = 'C:\Nanite' SessionRetentionDays = 14 SupportedResources = @( 'virtualMachines', 'virtualMachineScaleSets' ) Testing = 'C:\Nanite\Testing' } # Ensure that PowerShell is currently running as Administrator. If (!([bool]('S-1-5-32-544' -in ([System.Security.Principal.WindowsIdentity]::GetCurrent()).Groups))) { Write-Console -Message 'Please restart PowerShell as Administrator and then import Nanite.' -Color 'Red' Return } # Check if there is a module update available by checking major and minor version numbers. # Build and revision numbers are ignored to allow incremental builds to be published and tested without flagging an update. $currentVersion = ((Get-Module -Name 'Nanite' | Select-Object Version).Version).ToString() $availableVersion = ((Find-Module -Name 'Nanite' -Repository 'PSGallery' | Select-Object Version).Version).ToString() If ([version]('{0}.{1}.{2}' -f $currentVersion.Split('.')) -lt [version]('{0}.{1}.{2}' -f $availableVersion.Split('.'))) { Write-Console -Message 'There is a new version of Nanite available by executing:' -Color 'Red' Write-Console -Message "Update-Module -Name 'Nanite'" -Color 'Red' } <# If ([version]$currentVersion -ne [version]$availableVersion) { Write-Console -Message 'There is a new version of Nanite available by executing:' -Color 'Red' Write-Console -Message "Update-Module -Name 'Nanite'" -Color 'Red' }#> # Open a global database connection and ensure that the connection was made. $Global:database = Open-Database If (!($database)) { Write-Console -Message 'The database could not be reached.' -Color 'Red' Return } # Initialize the catalog. [System.Collections.ArrayList]$Global:operations = @() $operationsJSON = Invoke-Database -Query "SELECT [data] FROM [dbo].[operations]" ForEach ($operation in $operationsJSON.Tables.data) { $operation = $operation | ConvertFrom-Json $null = $Global:operations.Add($operation) } # Create the global session object. $Global:session = [PSCustomObject]@{} # Check if the root output directory exists and create it if not. If (!(Test-Path -Path $Global:configuration.Output)) { $NULL = New-Item -Path $Global:configuration.Output -ItemType Directory -Force } # Check if the temporary output directory exists and create it if not. # Clear out the temporary output directory if it already exists. If (!(Test-Path -Path "$($Global:configuration.Output)\Temporary")) { $NULL = New-Item -Path "$($Global:configuration.Output)\Temporary" -ItemType Directory -Force } Else { $files = Get-ChildItem -Path "$($Global:configuration.Output)\Temporary" -Recurse If ($files.Count -ne 0) { ForEach ($file in $files) { $file.FullName | Remove-Item -Force } } } # Check if the Session output directory exists and create it if not. # If the session output directory exists then clear out any sessions older than the $Global:configuration.SessionRetentionDays setting. # Session file removal is based on $_.LastWriteTime since $_.LastAccessTime isn't typically enabled in filesystems by default. If (!(Test-Path -Path "$($Global:configuration.Output)\Sessions")) { $NULL = New-Item -Path "$($Global:configuration.Output)\Sessions" -ItemType Directory -Force } Else { $files = Get-ChildItem -Path "$($Global:configuration.Output)\Sessions" -Recurse $lookback = (Get-Date).AddDays(-$($Global:configuration.SessionRetentionDays)) If ($files.Count -ne 0) { ForEach ($file in $files) { If ($lookback -gt $file.LastWriteTime) { $file.FullName | Remove-Item -Force } } } } # Check for an installation of the Kusto package and install it if not present. $kustoInstallation = Get-Package -Name 'Microsoft.Azure.Kusto.Tools' -ErrorAction SilentlyContinue If (!($kustoInstallation)) { Write-Console -Message 'Kusto libraries were not found locally; attempting installation...' # We are deregistering the package source to reregister it as a trusted source. If (Get-PackageSource -ProviderName NuGet -WarningAction SilentlyContinue) { Unregister-PackageSource -Name NuGet } $NULL = Register-PackageSource -Name NuGet -Location 'https://www.nuget.org/api/v2' -ProviderName NuGet -Trusted $NULL = Install-Package -Name 'Microsoft.Azure.Kusto.Tools' -Source 'NuGet' } # Load the Kusto package. $kustoInstallation = Get-Package -Name 'Microsoft.Azure.Kusto.Tools' -ErrorAction SilentlyContinue $kustoPath = ($kustoInstallation.Source).Substring(0, ($kustoInstallation.Source).lastIndexOf('\')) dir "$kustoPath\*" | Unblock-File $NULL = [System.Reflection.Assembly]::LoadFrom("$kustoPath\tools\Kusto.Data.dll") If (!([System.AppDomain]::CurrentDomain.GetAssemblies() | Where-Object { $_.Location -like '*Kusto.Data.dll' })) { Write-Console -Message 'Failed to load Kusto dependencies.' -Color 'Red' Exit } # Welcome. Write-Console -Message "Welcome to Nanite, $($ENV:USERNAME.ToUpper())!" -Color 'Green' Write-Console -Message "The catalog contains $($operations.Count) operations." } |