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runner-images/images/win/scripts/Installers/Install-Go.ps1

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PowerShell

################################################################################
## File: Install-Go.ps1
## Desc: Install Go
################################################################################
Import-Module -Name ImageHelpers -Force
function Install-GoVersion
{
Param
(
[String]$goVersion,
[Switch]$addToDefaultPath
)
# Download the Go zip archive.
Write-Host "Downloading Go $goVersion..."
$ProgressPreference = 'SilentlyContinue'
Invoke-WebRequest -UseBasicParsing -Uri "https://dl.google.com/go/go$goVersion.windows-amd64.zip" -OutFile go$goVersion.windows-amd64.zip
# Extract the zip archive. It contains a single directory named "go".
Write-Host "Extracting Go $goVersion..."
Expand-Archive -Path go$goVersion.windows-amd64.zip -DestinationPath "C:\" -Force
# Delete unnecessary files to conserve space
Write-Host "Cleaning directories of Go $goVersion..."
if (Test-Path "C:\go\doc")
{
Remove-Item -Recurse -Force "C:\go\doc"
}
if (Test-Path "C:\go\blog")
{
Remove-Item -Recurse -Force "C:\go\blog"
}
# Rename the extracted "go" directory to include the Go version number (to support side-by-side versions of Go).
$newDirName = "Go$goVersion"
Rename-Item -path "C:\go" -newName $newDirName
# Delete the Go zip archive.
Write-Host "Deleting downloaded archive of Go $goVersion..."
Remove-Item go$goVersion.windows-a`md64.zip
# Make this the default version of Go?
if ($addToDefaultPath)
{
Write-Host "Adding Go $goVersion to the path..."
# Add the Go binaries to the path.
Add-MachinePathItem "C:\$newDirName\bin" | Out-Null
# Set the GOROOT environment variable.
setx GOROOT "C:\$newDirName" /M | Out-Null
}
# Done
Write-Host "Done installing Go $goVersion."
return "C:\$newDirName"
}
# Install Go
$goVersionsToInstall = $env:GO_VERSIONS.split(",")
foreach($go in $goVersionsToInstall) {
Write-Host "Installing Go ${go}"
if($go -eq $env:GO_DEFAULT) {
$installDirectory = Install-GoVersion -goVersion $go -addToDefaultPath
} else {
$installDirectory = Install-GoVersion -goVersion $go
}
$envName = "GOROOT_{0}_{1}_X64" -f $go.split(".")
setx $envName "$installDirectory" /M
}