AzStackHci.EnvironmentChecker

1.2100.2627.343

Obs/bin/ObsDep/content/Powershell/Roles/Common/Servicing/Scripts/Modules/AzureStackUpdate.psm1

                                <###################################################

 #                                                 #

 #  Copyright (c) Microsoft. All rights reserved.  #

 #                                                 #

 ##################################################>

<#

This file implements the copying of the Azure Stack Update

payload into the respective product VHDs attached to the VMs.

#>

#region CustomerConfig functions

<#

.SYNOPSIS

 Finds the CustomerConfigFile relative to the current location of the module.

 The modules path is:

 \\su1_fileserver\SU1_ManagementLibrary_1\CloudMedia\Roles\Common\Servicing\Modules

 The CustomerConfigFile exists at:

 \\su1_fileserver\SU1_ManagementLibrary_1\CloudMedia

#>

function Get-CustomerConfigFilePath

{

    [CmdletBinding()]

    param ()

    $cloudMediaPath = Join-Path $PSScriptRoot "..\..\..\.."

    Write-Verbose "cloudMediaPath: $cloudMediaPath."

    $customerConfigFilePath = Join-Path $cloudMediaPath "CustomerConfig.xml"

    if (Test-Path $customerConfigFilePath)

    {

        Write-Verbose "Found the CustomerConfig file at: '$customerConfigFilePath'."

        return $customerConfigFilePath

    }

    throw "CustomerConfig file not found at '$customerConfigFilePath'."    

}

<#

.SYNOPSIS

 This function processes CustomerConfig file and returns a hash table with all the parsed values.

 Any data we would need later from CustomerConfig file should all be processed here and add to the hash table.

#>

function Import-CustomerConfigFile

{

    [CmdletBinding()]

    param ()

    $customerConfigFilePath = Get-CustomerConfigFilePath

    $customerConfigXML = [xml] (Get-Content $customerConfigFilePath)

    $fabricRole = $customerConfigXML.CustomerConfiguration.Role.Roles.Role | ? id -eq 'Fabric' 

    $virtualMachines = $fabricRole.Roles.Role | ? id -eq 'VirtualMachines'

    $vmNames = $virtualMachines.Nodes.Node | % Name

    $vmToVhdMap = @{} 

    foreach ($vmName in $vmNames)

    {

        $vmNode = $virtualMachines.Nodes.Node | ? Name -eq $vmName

        $vmToVhdMap.$vmName = $vmNode.Vhds.Vhd.Path

    }

    $customerConfigData = @{

        LocalSourceImagePath = $virtualMachines.PrivateInfo.LocalSourceImagePath.Path

        VmToVhdMap = $vmToVhdMap

        LibrarySharePath = $virtualMachines.PrivateInfo.LibraryShare.Path

        InfrastructureSharePath = $virtualMachines.PrivateInfo.InfrastructureShare.Path

    }

    return $customerConfigData

}

#endregion CustomerConfig functions

<#

.SYNOPSIS

 Creates a mapped drive of the network path with the drive name provided, using "net use" command.

 Throws an exception, if the command fails.

#>

function New-MappedDrive

{

    [CmdletBinding()]

    param (

        [Parameter(Mandatory=$true, Position=0)]

        [string]

        $Drive,

        [Parameter(Mandatory=$true, Position=1)]

        [ValidateScript({ Test-Path $_ })]

        [string]

        $Path

    )

    $output = net use $Drive $Path  2>&1 | % ToString | Out-String

    if ($LASTEXITCODE)

    {

        throw "net use '$Drive' '$Path' failed with error code '$LASTEXITCODE'.`r`nThe command output was:`r`n$output."

    }

    # Workaround for a PowerShell issue. The newly mapped drive is not visible sometimes.

    # Enumerating the drives rebuilds the cache and makes the new drive visible.

    Get-PSDrive | Out-Null

}

<#

.SYNOPSIS

 Deletes a mapped drive of the network path with the drive name provided, using "net use" command.

 Throws an exception, if the command fails.

#>

function Remove-MappedDrive

{

    [CmdletBinding()]

    param (

        [Parameter(Mandatory=$true)]

        [string]

        $Drive

    )

    $output = net use $Drive /d 2>&1 | % ToString | Out-String

    if ($LASTEXITCODE)

    {

        throw "net use '$Drive' /d failed with error code '$LASTEXITCODE'.`r`nThe command output was:`r`n$output."

    }

}

<#

.SYNOPSIS

 Parse the manifest file in the Update and find the VHDs which need to be updated.

 Based on the VHDs find the VMs, whose mounted VHDs need to be updated.

 Then copy the directories/files from the respective nuget directories into the respective paths of mounted VHDs.

 We access the mounted VHDs using the VM name and the d drive. say the VM name is MAS-XRP01, then the path of the mounted

 VHD is \\MAS-XRP01\D$. The content from the update overrides the content in the mounted VHD (if it exists).

#>

function Copy-AzureStackUpdatePayload

{

    [CmdletBinding(SupportsShouldProcess=$true)]

    param (

        [parameter (Mandatory=$true)]

        [ValidateScript({ Test-Path $_ })]

        [string]

        $ExtractedUpdatePath

    )

    Import-Module (Join-Path $PSScriptRoot "Get-FreeDriveLetter.psm1")

    $Verbose = (Get-PSCallStack).Arguments -join '' -match 'Verbose=True' 

    try 

    {

        # Process the CustomerConfig data to get the vm to vhd map and other information

        $customerConfigData = Import-CustomerConfigFile

        $vmToVhdMap =  $customerConfigData["VmToVhdMap"]

        Write-Verbose "VM to VHD Path after processing CustomerConfig file: $($vmToVhdMap | Out-String)"

        $manifestFile = "manifest.xml"

        $manifestFilePath = Join-Path $ExtractedUpdatePath $manifestFile

        if (-not (Test-Path $manifestFilePath))

        {

            throw "Manifest file $manifestFilePath missing from the package."

        }

        $manifestxml = [xml] (Get-Content $manifestFilePath)

        $dataImages = $manifestxml.ImageBuildManifest.DataImage | Select Name, FileName, NuGetPackage

        foreach ($dataImage in $dataImages)

        {

            $vhdName = [System.IO.Path]::GetFileNameWithoutExtension($dataImage.FileName)

            $vhdExtension = [System.IO.Path]::GetExtension($dataImage.FileName)

            $vhdName = $vhdName+"-Product"+$vhdExtension

            Write-Verbose "VHD being updated: '$vhdName'."

            # TODO : Offline update VHDs...

            # $vhdPath = Join-Path $customerConfigData["localSourceImagePath"] $vhdname

            $vmsToUpdate = $vmToVhdMap.Keys | where { $vmToVhdMap.$_ -contains $vhdname } 

            Write-Verbose "VMs to be updated: '$vmsToUpdate'."

            foreach ($vm in $vmsToUpdate)

            {

                # The product VHDs are guaranteed to be mounted as D drive.

                # If that changes, this part of code needs to change.

                $updatePath = "\\" + $vm +"\D$"

                Write-Verbose "VM being updated: '$vm' and the path being updated: '$updatePath'."

                foreach ($nuget in $dataImage.NuGetPackage)

                {

                    $nugetPath = $nuget.Name

                    if ($nuget.Version)

                    {

                        $nugetPath = $nugetPath +"."+ $nuget.Version

                    }

                    $nugetSource = Join-Path $ExtractedUpdatePath $nugetPath

                    # Due to long path issues with the filenames, direct copy

                    # of the files to the destination fails. Hence we create mapped

                    # drives to both source and destination and use them for the copy.

                    $sourceDrive = $null

                    $destinationDrive = $null

                    if ($nuget.Directory)

                    {

                        foreach ($directory in $nuget.Directory)

                        {

                            $source = Join-Path $nugetSource $directory.SourceSubdirectory

                            $sourceDrive = Get-FreeDriveLetter -MakePath

                            New-MappedDrive -Drive $sourceDrive -Path $source

                            $sourceDrivePath = Join-Path $sourceDrive "\*"

                            if (!(Test-Path $sourceDrivePath))

                            {

                                throw "Unable to access the path '$sourceDrivePath' ($source)."

                            }

                            $destination = Join-Path $updatePath  $directory.Destination

                            $destinationDrive = Get-FreeDriveLetter -MakePath

                            New-MappedDrive -Drive $destinationDrive -Path $destination

                            if ($PSCmdlet.ShouldProcess("Copy-Item -Path $sourceDrivePath ($source) -Destination $destinationDrive ($destination) -Recurse -Force", "Update Directory on $vm."))

                            {

                                Write-Verbose "Copying '$sourceDrivePath' ($source) recursively to '$destinationDrive' ($destination)."

                                Copy-Item -Path $sourceDrivePath -Destination $destinationDrive -Recurse -Force

                            }

                            if ($sourceDrive)

                            {

                                Remove-MappedDrive -Drive $sourceDrive

                                $sourceDrive = $null

                            }

                            if ($destinationDrive)

                            {

                                Remove-MappedDrive -Drive $destinationDrive

                                $destinationDrive = $null

                            }

                        }

                    }

                    elseif ($nuget.File)

                    {

                        foreach ($file in $nuget.File)

                        {

                            $source = Join-Path $nugetSource $file.Source

                            $sourceDirectory = Split-Path $source -Parent

                            $sourceFileName = Split-Path $source -Leaf

                            $sourceDrive = Get-FreeDriveLetter -MakePath

                            New-MappedDrive -Drive $sourceDrive -Path $sourceDirectory

                            $sourcePath = Join-Path $sourceDrive $sourceFileName

                            $destination = Join-Path $updatePath  $directory.Destination

                            $destinationDrive = Get-FreeDriveLetter -MakePath

                            New-MappedDrive -Drive $destinationDrive -Path $destination

                            if ($PSCmdlet.ShouldProcess("Copy-Item -Path $sourceDrivePath -Destination $destinationDrive -Force", "Update file on $vm."))

                            {

                                Write-Verbose "Copying '$sourcePath' ($source) to '$destinationDrive' ($destination)."

                                Copy-Item -path $sourcePath -Destination $destinationDrive -Force

                            }

                            if ($sourceDrive)

                            {

                                Remove-MappedDrive -Drive $sourceDrive

                                $sourceDrive = $null

                            }

                            if ($destinationDrive)

                            {

                                Remove-MappedDrive -Drive $destinationDrive

                                $destinationDrive = $null

                            }

                        }

                    }

                }

            }

        }

    }

    catch

    {

        $ex = $_ | Select-Object *

        throw "Copying the payload for the Azure Stack Update failed.`r`n$ex."

    }

    finally

    {

        if ($sourceDrive)

        {

            Remove-MappedDrive -Drive $sourceDrive

        }

        if ($destinationDrive)

        {

            Remove-MappedDrive -Drive $destinationDrive

        }

    } 

}

<#

.SYNOPSIS

Expands the Azure Stack Update Package.

.DESCRIPTION

Given a Package, expand package to directory of same name (without the .zip extension) in the same location as the package.

.PARAMETER Path

The full path to the Azure Stack Update Package.

#>

function Expand-AzureStackUpdate

{

    [CmdletBinding(SupportsShouldProcess=$true)]

    param (

        [parameter (Mandatory=$true)]

        [ValidateScript({ Test-Path $_ })]

        [string]

        $Path

    )

    Import-Module (Join-Path $PSScriptRoot "ZipFiles.psm1")

    Import-Module (Join-Path $PSScriptRoot "Get-FreeDriveLetter.psm1")

    $drive = $null

    try

    {

        $Verbose = (Get-PSCallStack).Arguments -join '' -match 'Verbose=True' 

        $dirName = [System.IO.Path]::GetDirectoryName($Path)

        Write-Verbose "Directory name is: '$dirName'."

        $fileName = [System.IO.Path]::GetFileName($Path)

        Write-Verbose "File name is: '$fileName'."

          $fileNameWithoutExtension = [System.IO.Path]::GetFileNameWithoutExtension($Path)  

        Write-Verbose "File name without extension is: '$fileNameWithoutExtension'." 

        $drive = Get-FreeDriveLetter -MakePath

        New-MappedDrive -Drive $drive -Path $dirName

        $shortPath = Join-Path $drive $fileName

        Write-Verbose "Short path name is: '$shortPath'."

        $destShortPath = Join-Path $drive $fileNameWithoutExtension

        Write-Verbose "Expanding the package '$shortPath' to '$destShortPath'."

        Expand-ZipFile -Source $shortPath -Destination $destShortPath -Force

        $destOriginalPath = Join-Path $dirName $fileNameWithoutExtension 

        if (Test-Path $destOriginalPath)

        {

            return $destOriginalPath

        }

        else

        {

            throw "Expanding package '$Path' failed to extract to '$destOriginalPath'."

        }

    }

    catch

    {

        $ex = $_ | Select-Object *

        throw "Expanding the Azure Stack Update failed.`r`n$ex."

    }

    finally

    {

        if ($drive)

        {

            Remove-MappedDrive -Drive $drive

        }

    }

}

Export-ModuleMember -Function Copy-AzureStackUpdatePayload

Export-ModuleMember -Function Expand-AzureStackUpdate

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