97 lines
3.8 KiB
PowerShell
97 lines
3.8 KiB
PowerShell
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function Use-TerraformVersion {
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<#
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.SYNOPSIS
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This function will ensure that the version of Terraform in your runtime is the version you want to run.
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If you already have a version of terraform downloaded it will just use that version. If not it will download the version to your profile.
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This function will ensure the version of terraform you have selected is in the path.
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.PARAMETER Version
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The version of terraform to use. Supplying a garbage value will print the list of available values.
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.PARAMETER UseLatestVersion
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Use the latest version.
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#>
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param (
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[Parameter(Mandatory = $false)]
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[string]$Version,
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[switch]$UseLatestVersion
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)
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$terraformExe = "terraform.exe"
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# Get the version list to verify what you can work with
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$baseUrl = "https://releases.hashicorp.com/"
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$releaseDocument = (Invoke-WebRequest -Uri (Join-UrlComponents -BaseUrl $baseUrl -Path "terraform/") -UseBasicParsing -Method Get)
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$links = $releaseDocument.get_links()
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$latestVersion = $null
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$versions = @{}
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foreach ($link in $links) {
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$text = ($link.outerHtml -split '>' -split '<')[2]
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$url = $link.href
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$versionSplits = ($text -split '_' -split '-')
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$packageVersion = $versionSplits[1]
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if (($null -ne $url) -and ($url.IndexOf('terraform') -gt -1) -and ($versionSplits.Count -eq 2)) {
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$entry = @{ url = (Join-UrlComponents -BaseUrl $baseUrl -Path $url,"terraform_$($packageVersion)_windows_amd64.zip"); text = $text; version = $packageVersion; }
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if ($null -eq $latestVersion) {
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$latestVersion = $entry
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}
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$versions[$packageVersion] = $entry
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}
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}
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if ($UseLatestVersion) {
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$Version = $latestVersion.version
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}
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$targetVersion = $versions[$Version]
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if ($null -eq $targetVersion) {
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Write-Warning "The specified version [$Version] does not exist in the lookup list."
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Write-Host "The available versions are:"
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Show-ListAsTable ($versions.Keys | Sort-Object -Descending)
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throw "The specified version [$Version] does not exist in the lookup list."
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}
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$targetPath = (Expand-Path -Path "~/.terraform/$Version")
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$terraformPath = (Join-Path $targetPath $terraformExe)
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$downloadPath = (Join-Path $targetPath "terraform.zip")
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if (!(Test-Path $targetPath)) {
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(New-Directory -Path $targetPath) | Out-Null
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}
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if (!(Test-Path $terraformPath)) {
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Write-Host "Downloading version [$($Version)] from [$(targetVersion.url)] to [$downloadPath]"
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(Invoke-WebRequest -Uri $targetVersion.url -OutFile $downloadPath -Method Get)
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Expand-Archive -Path $downloadPath -DestinationPath $targetPath
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}
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# Assert that the file exists
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if (!(Test-Path $terraformPath)) {
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throw "Something has gone wrong, and there is no $terraformExe @ [$terraformPath]"
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}
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# now we have a folder that contains our exe file, let's set the path to reference the one we want
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$existingLocation = (Get-Command -Name $terraformExe -ErrorAction SilentlyContinue)
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$folderToRemove = $null
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if ($null -ne $existingLocation) {
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# the terraform.exe path is already on our %PATH% so we want to remove it
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# Find the folder from the path
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$folderToRemove = (Split-Path -Path $existingLocation.Path -Parent)
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}
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Write-Host "Ensuring the correct path is set at the machine (removed if set), user and process levels so you can use the right version right away"
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if (![string]::IsNullOrWhiteSpace($folderToRemove)) {
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Set-PathVariable -StoreName Machine -Remove $folderToRemove
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}
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Set-PathVariable -StoreName User -Prepend $targetPath -Remove $folderToRemove
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Set-PathVariable -StoreName 'Process' -Prepend $targetPath -Remove $folderToRemove
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}
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