Private/DownloadFilesSequentially.ps1
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function DownloadFilesSequentially { [CmdletBinding()] param ( [Parameter(Mandatory)] [System.Collections.ArrayList] $FileInfoList, [Parameter(Mandatory)] [string] $OutputPath ) $currentDownloadNumber = 0 $totalUpdateFiles = $FileInfoList.Count foreach ($parsedFileInfo in $FileInfoList) { $currentDownloadNumber += 1 $downloadProgress = "$currentDownloadNumber/$totalUpdateFiles" $fileDownloadUri = $parsedFileInfo["Uri"] $fileName = $parsedFileInfo["FileName"] $fileDownloadPath = Join-Path $OutputPath $fileName -ErrorAction Stop $fileDownloadPathTemp = "$fileDownloadPath.tmp" if (Test-Path $fileDownloadPath) { Write-Output "Skipping already downloaded update file $fileName ($downloadProgress)." continue } if (Test-Path $fileDownloadPathTemp) { Write-Output "Restarting download for incomplete update file $fileName ($downloadProgress)..." try { Remove-Item -Path $fileDownloadPathTemp -ErrorAction Stop } catch { Write-Error -Message "Could not remove incomplete update file ($fileDownloadPathTemp). Please remove this file manually and try again." return } } else { Write-Output "Downloading update file $fileName ($downloadProgress)..." } try { $transferParams = GetBitsTransferSplatBase -Source $fileDownloadUri Start-BitsTransfer @transferParams ` -DisplayName "Import-WsusUpdate update file download ($downloadProgress)" ` -Destination $fileDownloadPathTemp ` -ErrorAction Stop } catch { Write-Warning "BITS transfer for update file $fileName failed with the following error: $_" Write-Verbose "Full error info:" Write-Verbose ($_ | Format-List -Force | Out-String) Write-Warning "Retrying download once more with Invoke-WebRequest as a fallback..." try { $webRequestParams = GetWebRequestSplatBase -Uri $fileDownloadUri $webRequestParams["OutFile"] = $fileDownloadPathTemp Invoke-WebRequest @webRequestParams -ErrorAction Stop } catch { Write-Warning "Fallback download also failed for update file $fileName (URI: $fileDownloadUri) with the following error: $_" throw } } Write-Verbose "Moving finished download to its proper path $fileDownloadPath." Move-Item -Path $fileDownloadPathTemp -Destination $fileDownloadPath -ErrorAction Stop } } # Copyright (c) 2023 AJ Tek Corporation. All Rights Reserved. |