Install latest patch versions of Golang for Windows (#502)

* add golang for windows

* minor changes

* fix comments

* resolve comments

* add 1.14 version

* add debug lines

* fix arrays

* better way to remove ecmpty strings

* add path

* minor fix

Co-authored-by: Dmitry Shibanov <v-dmshib@microsoft.com>

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

@@ -5,6 +5,7 @@
 
 Import-Module -Name ImageHelpers -Force
 
+$refsJson = Invoke-RestMethod "https://api.github.com/repos/golang/go/git/refs/tags"
 function Install-GoVersion
 {
     Param
@@ -13,17 +14,20 @@ function Install-GoVersion
         [Switch]$addToDefaultPath
     )
 
+    $latestVersionObject = $refsJson | Where-Object { $_.ref -Match "refs/tags/go$goVersion[./d]*" }  | Select-Object -Last 1
+    $latestVersion = $latestVersionObject.ref.replace('refs/tags/go','')
+
     # Download the Go zip archive.
-    Write-Host "Downloading Go $goVersion..."
+    Write-Host "Downloading Go $latestVersion..."
     $ProgressPreference = 'SilentlyContinue'
-    Invoke-WebRequest -UseBasicParsing -Uri "https://dl.google.com/go/go$goVersion.windows-amd64.zip" -OutFile go$goVersion.windows-amd64.zip
+    Invoke-WebRequest -UseBasicParsing -Uri "https://dl.google.com/go/go$latestVersion.windows-amd64.zip" -OutFile go$latestVersion.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
+    Write-Host "Extracting Go $latestVersion..."
+    Expand-Archive -Path go$latestVersion.windows-amd64.zip -DestinationPath "C:\" -Force
 
     # Delete unnecessary files to conserve space
-    Write-Host "Cleaning directories of Go $goVersion..."
+    Write-Host "Cleaning directories of Go $latestVersion..."
     if (Test-Path "C:\go\doc")
     {
         Remove-Item -Recurse -Force "C:\go\doc"
@@ -34,17 +38,17 @@ function Install-GoVersion
     }
 
     # Rename the extracted "go" directory to include the Go version number (to support side-by-side versions of Go).
-    $newDirName = "Go$goVersion"
+    $newDirName = "Go$latestVersion"
     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
+    Write-Host "Deleting downloaded archive of Go $latestVersion..."
+    Remove-Item go$latestVersion.windows-amd64.zip
 
     # Make this the default version of Go?
     if ($addToDefaultPath)
     {
-        Write-Host "Adding Go $goVersion to the path..."
+        Write-Host "Adding Go $latestVersion to the path..."
         # Add the Go binaries to the path.
         Add-MachinePathItem "C:\$newDirName\bin" | Out-Null
         # Set the GOROOT environment variable.
@@ -52,12 +56,12 @@ function Install-GoVersion
     }
 
     # Done
-    Write-Host "Done installing Go $goVersion."
+    Write-Host "Done installing Go $latestVersion."
     return "C:\$newDirName"
 }
 
 # Install Go
-$goVersionsToInstall = $env:GO_VERSIONS.split(",")
+$goVersionsToInstall = $env:GO_VERSIONS.split(", ", [System.StringSplitOptions]::RemoveEmptyEntries)
 
 foreach($go in $goVersionsToInstall) {
     Write-Host "Installing Go ${go}"
@@ -66,6 +70,6 @@ foreach($go in $goVersionsToInstall) {
     } else {
         $installDirectory = Install-GoVersion -goVersion $go
     }
-    $envName = "GOROOT_{0}_{1}_X64" -f $go.split(".")	
+    $envName = "GOROOT_{0}_{1}_X64" -f $go.split(".")
     setx $envName "$installDirectory" /M
 }

images/win/scripts/Installers/Validate-Go.ps1

@@ -8,18 +8,31 @@ function Get-GoVersion
 {
     Param
     (
-        [String]$goRootPath
+        [String]$goVersion
     )
+    Write-Host "Check if $goVersion is presented in the system"
+    $DestinationPath = "$($env:SystemDrive)\"
+    $goDirectory = Get-ChildItem -Path $DestinationPath -Filter "Go$goVersion*" | Select-Object -First 1
+    $goPath = Join-Path $env:SystemDrive $goDirectory
 
-    $env:Path = "$goRootPath\bin;" + $env:Path
-    if( $(go version) -match 'go version go(?<version>.*) win.*' )
+    $env:Path = "$goPath\bin;" + $env:Path
+    $version = $(go version)
+
+    $matchVersion = $version -match $goVersion
+    $semanticEquality = $version -match 'go version go(?<version>.*) win.*'
+
+    if($semanticEquality -And $matchVersion)
     {
-        $goVersion = $Matches.version
-        return $goVersion
-    }
+        $goFullVersion = $Matches.version
+        Write-Host "$goFullVersion has been found"
 
-    Write-Host "Unable to determine Go version at " + $goRootPath
-    return ""
+        return $goFullVersion
+    }
+    else
+    {
+        Write-Host "Unable to determine Go version at " + $goPath
+        exit 1
+    }
 }
 
 # Verify that go.exe is on the path
@@ -53,10 +66,10 @@ _Environment:_
 
 $SoftwareName = "Go (x64)"
 $Description = New-Object System.Text.StringBuilder
-$goVersionsToInstall = $env:GO_VERSIONS.split(",")
+$goVersionsToInstall = $env:GO_VERSIONS.split(", ", [System.StringSplitOptions]::RemoveEmptyEntries)
 
 foreach($go in $goVersionsToInstall) {
-    $goVersion = Get-GoVersion -goRootPath "C:\Go${go}"
+    $goVersion = Get-GoVersion -goVersion $go
     $goVersionTag = "GOROOT_{0}_{1}_X64" -f $go.split(".")
     if ($goVersion -eq $go) {
         if($go -eq $env:GO_DEFAULT) {