Add terraform installer

Azure · Dec 11, 2023 · bf19357 · bf19357
1 parent 299566c
commit bf19357
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Showing 4 changed files with 125 additions and 40 deletions.
diff --git a/src/ALZ/Private/Get-HCLParserTool.ps1 b/src/ALZ/Private/Get-HCLParserTool.ps1
@@ -9,47 +9,11 @@ function Get-HCLParserTool {
     )
 
     if ($PSCmdlet.ShouldProcess("Download Terraform Tools", "modify")) {
-        $os = ""
-        if ($IsWindows) {
-            $os = "windows"
-        }
-        if($IsLinux) {
-            $os = "linux"
-        }
-        if($IsMacOS) {
-            $os = "darwin"
-        }
-
-        # Enum values can be seen here: https://learn.microsoft.com/en-us/dotnet/api/system.runtime.interopservices.architecture?view=net-7.0#fields
-        $architecture = ([System.Runtime.InteropServices.RuntimeInformation]::OSArchitecture).ToString().ToLower()
-
-        if($architecture -eq "x64") {
-            $architecture = "amd64"
-        }
-        if($architecture -eq "x86") {
-            $architecture = "386"
-        }
-
-        $osAndArchitecture = "$($os)_$($architecture)"
-
-        $supportedOsAndArchitectures = @(
-            "darwin_amd64",
-            "darwin_arm64",
-            "linux_386",
-            "linux_amd64",
-            "linux_arm64",
-            "windows_386",
-            "windows_amd64"
-        )
-
-        if($supportedOsAndArchitectures -notcontains $osAndArchitecture) {
-            Write-Error "Unsupported OS and architecture combination: $osAndArchitecture"
-            exit 1
-        }
+        $osArchitecture = Get-OSArchitecture
 
-        $toolFileName = "hcl2json_$osAndArchitecture"
+        $toolFileName = "hcl2json_$($osArchitecture.osAndArchitecture)"
 
-        if($os -eq "windows") {
+        if($osArchitecture.os -eq "windows") {
             $toolFileName = "$($toolFileName).exe"
         }
 
@@ -59,7 +23,7 @@ function Get-HCLParserTool {
             Invoke-WebRequest -Uri "https://github.com/tmccombs/hcl2json/releases/download/$($toolVersion)/$($toolFileName)" -OutFile "$toolFilePath" | Out-String | Write-Verbose
         }
 
-        if($os -ne "windows") {
+        if($osArchitecture.os -ne "windows") {
             $isExecutable = $(test -x $toolFilePath; 0 -eq $LASTEXITCODE)
             if(!($isExecutable)) {
                 chmod +x $toolFilePath

diff --git a/src/ALZ/Private/Get-OsArchitecture.ps1 b/src/ALZ/Private/Get-OsArchitecture.ps1
@@ -0,0 +1,45 @@
+function Get-OSArchitecture {
+    $os = ""
+    if ($IsWindows) {
+        $os = "windows"
+    }
+    if($IsLinux) {
+        $os = "linux"
+    }
+    if($IsMacOS) {
+        $os = "darwin"
+    }
+
+    # Enum values can be seen here: https://learn.microsoft.com/en-us/dotnet/api/system.runtime.interopservices.architecture?view=net-7.0#fields
+    $architecture = ([System.Runtime.InteropServices.RuntimeInformation]::OSArchitecture).ToString().ToLower()
+
+    if($architecture -eq "x64") {
+        $architecture = "amd64"
+    }
+    if($architecture -eq "x86") {
+        $architecture = "386"
+    }
+
+    $osAndArchitecture = "$($os)_$($architecture)"
+
+    $supportedOsAndArchitectures = @(
+        "darwin_amd64",
+        "darwin_arm64",
+        "linux_386",
+        "linux_amd64",
+        "linux_arm64",
+        "windows_386",
+        "windows_amd64"
+    )
+
+    if($supportedOsAndArchitectures -notcontains $osAndArchitecture) {
+        Write-Error "Unsupported OS and architecture combination: $osAndArchitecture"
+        exit 1
+    }
+
+    return @{
+        os                = $os
+        architecture      = $architecture
+        osAndArchitecture = $osAndArchitecture
+    }
+}
diff --git a/src/ALZ/Private/Get-TerraformTool.ps1 b/src/ALZ/Private/Get-TerraformTool.ps1
@@ -0,0 +1,73 @@
+function Get-TerraformTool {
+    [CmdletBinding(SupportsShouldProcess = $true)]
+    param(
+        [Parameter(Mandatory = $false)]
+        [string]$version = "latest",
+        [Parameter(Mandatory = $false)]
+        [string]$toolsPath = ".\terraform"
+    )
+
+    if($version -eq "latest") {
+        $version = (Invoke-WebRequest -Uri "https://checkpoint-api.hashicorp.com/v1/check/terraform").Content | ConvertFrom-Json | Select-Object -ExpandProperty current_version
+    }
+
+    $commandDetails = Get-Command -Name terraform -ErrorAction SilentlyContinue
+    if($commandDetails) {
+        Write-InformationColored "Terraform already installed in $($commandDetails.Path), checking version" -ForegroundColor Green -InformationAction Continue
+        $installedVersion = terraform version -json | ConvertFrom-Json
+        Write-InformationColored "Installed version of Terraform: $($installedVersion.terraform_version) on $($installedVersion.platform)" -ForegroundColor Green -InformationAction Continue
+        if($installedVersion.terraform_version -eq $version) {
+            Write-InformationColored "Installed version of Terraform matches required version $version, skipping install" -ForegroundColor Green -InformationAction Continue
+            return
+        }
+    }
+
+    $unzipdir = Join-Path -Path $toolsPath -ChildPath "terraform_$version"
+    if (Test-Path $unzipdir) {
+        Write-InformationColored "Terraform $version already installed, adding to Path." -ForegroundColor Green -InformationAction Continue
+        if($os -eq "windows") {
+            $env:PATH = "$($unzipdir);$env:PATH"
+        } else {
+            $env:PATH = "$($unzipdir):$env:PATH"
+        }
+        return
+    }
+
+    $osArchitecture = Get-OSArchitecture
+
+    $zipfilePath = "$unzipdir.zip"
+
+    $url = "https://releases.hashicorp.com/terraform/$($version)/terraform_$($version)_$($osArchitecture.osAndArchitecture).zip"
+
+    if(!(Test-Path $toolsPath)) {
+        New-Item -ItemType Directory -Path $toolsPath| Out-String | Write-Verbose
+    }
+
+    Invoke-WebRequest -Uri $url -OutFile "$zipfilePath" | Out-String | Write-Verbose
+
+    Expand-Archive -Path $zipfilePath -DestinationPath $unzipdir
+
+    $toolFileName = "terraform"
+
+    if($osArchitecture.os -eq "windows") {
+        $toolFileName = "$($toolFileName).exe"
+    }
+
+    $toolFilePath = Join-Path -Path $unzipdir -ChildPath $toolFileName
+
+    if($osArchitecture.os -ne "windows") {
+        $isExecutable = $(test -x $toolFilePath; 0 -eq $LASTEXITCODE)
+        if(!($isExecutable)) {
+            chmod +x $toolFilePath
+        }
+    }
+
+    if($osArchitecture.os -eq "windows") {
+        $env:PATH = "$($unzipdir);$env:PATH"
+    } else {
+        $env:PATH = "$($unzipdir):$env:PATH"
+    }
+
+    Remove-Item $zipfilePath
+    Write-InformationColored "Installed Terraform version $version" -ForegroundColor Green -InformationAction Continue
+}
diff --git a/src/ALZ/Private/New-ALZEnvironmentTerraform.ps1 b/src/ALZ/Private/New-ALZEnvironmentTerraform.ps1
@@ -24,6 +24,9 @@ function New-ALZEnvironmentTerraform {
     )
 
     if ($PSCmdlet.ShouldProcess("ALZ-Terraform module configuration", "modify")) {
+        Write-InformationColored "Checking you have the latest version of Terraform installed..." -ForegroundColor Green -InformationAction Continue
+        $toolsPath = Join-Path -Path $alzEnvironmentDestination -ChildPath ".tools"
+        Get-TerraformTool -version "latest" -toolsPath $toolsPath
 
         Write-InformationColored "Downloading alz-terraform-accelerator Terraform module to $alzEnvironmentDestination" -ForegroundColor Green -InformationAction Continue