PowerShell script to download DevOps Extensions from the marketplace as a local file

get-extensions.ps1

[CmdletBinding()]
param
(
    [Parameter(Mandatory = $true)]
    [string] $Publisher,

    [Parameter(Mandatory = $true)]
    [string] $ExtensionName,

    [Parameter(Mandatory = $true)]
    [ValidateScript( {
            If ($_ -match "^([0-9]+\.[0-9]+\.[0-9]+)$") {
                $True
            }
            else {
                Throw "$_ is not a valid version number. Version can only contain digits"
            }
        })]
    [string] $Version,

    [Parameter(Mandatory = $true)]
    [string] $OutputLocation
)

Set-StrictMode -Version Latest
$ErrorActionPreference = "Stop"

Write-Output "Publisher:        $($Publisher)"
Write-Output "Extension name:   $($ExtensionName)"
Write-Output "Version:          $($Version)"
Write-Output "Output location   $($OutputLocation)"

$baseUrl = "https://$($Publisher).gallery.vsassets.io/_apis/public/gallery/publisher/$($Publisher)/extension/$($ExtensionName)/$($Version)/assetbyname/Microsoft.VisualStudio.Services.VSIXPackage"
$outputFile = "$($Publisher)-$($ExtensionName)-$($Version).visx"

if (Test-Path $OutputLocation) {
    try {
        Write-Output "Retrieving extension..."
        [uri]::EscapeUriString($baseUrl) | Out-Null
        Invoke-WebRequest -Uri $baseUrl -OutFile "$OutputLocation\$outputFile"
    }
    catch {
        Write-Error "Unable to find the extension in the marketplace"
    }
}
else {
    Write-Output "The Path $($OutputLocation) does not exist"
}

The url structure has changed, it is now:

"https://marketplace.visualstudio.com/_apis/public/gallery/publishers/${Publisher}/vsextensions/${ExtensionName}/${Version}/vspackage"

Great script, @azurekid! I'd like to thank @paviad for modernizing it. Additionally, to allow for versions in the format of d+.d+.d+ (not just d.d.d), it's a good idea to change line 12 from If ($_ -match "^([0-9].[0-9].[0-9])") { to If ($_ -match "^([0-9]+\.[0-9]+\.[0-9]+)$") {.

I ran the script in Bash using the following command:

pwsh /home/user/scripts/script.ps1 -Publisher "GitHub" -ExtensionName "copilot" -Version "1.96.259" -OutputLocation "/home/user/downloads" 

It worked flawlessly!

https://marketplace.visualstudio.com/_apis/public/gallery/publishers/${Publisher}/vsextensions/${ExtensionName}/${Version}/vspackage

Hi thanks for the feedback, and sorry for not coming back earlier to this.
I have updated the url as you have suggested in your comments but that results in an error message that the package could not be found.

Can you add a PR on you r suggestion, maybe I am doing something wrong ;-)

Great script, @azurekid! I'd like to thank @paviad for modernizing it. Additionally, to allow for versions in the format of d+.d+.d+ (not just d.d.d), it's a good idea to change line 12 from If ($_ -match "^([0-9].[0-9].[0-9])") { to If ($_ -match "^([0-9]+\.[0-9]+\.[0-9]+)$") {.

I ran the script in Bash using the following command:

pwsh /home/user/scripts/script.ps1 -Publisher "GitHub" -ExtensionName "copilot" -Version "1.96.259" -OutputLocation "/home/user/downloads" 

It worked flawlessly!

hi @uyriq
It has been quiet a while when I wrote this little script, but happy it still seems to work.
I have added your suggestion to the code

Kind Regards,

Rogier