private/Get-File.ps1
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Function Get-File { <# .SYNOPSIS Downloads a file from a URL with retries and an optional fallback URL. .PARAMETER Url The primary URL to download the file from. .PARAMETER FallbackUrl An optional fallback URL to use if the primary URL fails. .PARAMETER OutFile The output file path where the downloaded content will be saved. .PARAMETER Retries The number of times to retry the download if it fails. Default is 3. .PARAMETER TimeoutSec The timeout in seconds for each download attempt. Default is 0 (no timeout). #> [OutputType()] param ( [Parameter(Mandatory = $true, Position=0, HelpMessage='Primary URL to download the file from')] [ValidateNotNullOrEmpty()] [string] $Url, [Parameter(Mandatory = $false, Position=1, HelpMessage='Fallback URL to use if the primary URL fails')] [string] $FallbackUrl, [Parameter(Mandatory = $false, Position=2, HelpMessage='Output file path for the downloaded content')] [string] $OutFile = '', [Parameter(Mandatory = $false, Position=3, HelpMessage='Number of retries for download attempts')] [int] $Retries = 3, [Parameter(Mandatory = $false, Position=4, HelpMessage='Timeout in seconds for each download attempt')] [int] $TimeoutSec = 0 ) for ($i = 0; $i -lt $Retries; $i++) { try { if($OutFile -ne '') { Invoke-WebRequest -Uri $Url -OutFile $OutFile -TimeoutSec $TimeoutSec } else { Invoke-WebRequest -Uri $Url -TimeoutSec $TimeoutSec } break; } catch { if ($i -eq ($Retries - 1)) { if($FallbackUrl) { try { if($OutFile -ne '') { Invoke-WebRequest -Uri $FallbackUrl -OutFile $OutFile -TimeoutSec $TimeoutSec } else { Invoke-WebRequest -Uri $FallbackUrl -TimeoutSec $TimeoutSec } } catch { throw "Failed to download the file from $Url and $FallbackUrl" } } else { throw "Failed to download the file from $Url" } } } } } |