fixing the windows build issue

- Fixed the issue with the windows build
- Added a strategy to test all build targets during PR

.github/workflows/pr.yml

@@ -8,6 +8,15 @@ on:
 jobs:
   build:
     runs-on: ubuntu-latest
+    strategy:
+      fail-fast: false
+      matrix:
+        # build and publish in parallel: linux/386, linux/amd64, linux/arm64, windows/386, windows/amd64, darwin/amd64, darwin/arm64
+        goos: [linux, windows, darwin]
+        goarch: ["386", amd64, arm64]
+        exclude:
+          - goarch: "386"
+            goos: darwin
     steps:
       - uses: actions/checkout@v1
       - name: Setup Go 1.21.x

src/catalog/cacheservice/disk_space_unix.go

@@ -0,0 +1,25 @@
+//go:build linux || darwin
+// +build linux darwin
+
+package cacheservice
+
+import (
+	"syscall"
+
+	"github.com/Parallels/prl-devops-service/errors"
+)
+
+func (cs *CacheService) getFreeDiskSpace() (int64, error) {
+	// We will be getting the free disk space from the disk
+	var stat syscall.Statfs_t
+	err := syscall.Statfs(cs.cacheFolder, &stat)
+	if err != nil {
+		return 0, errors.NewFromErrorWithCode(err, 500)
+	}
+
+	// Available blocks * size per block = available space in bytes
+	diskFreeSpaceInBytes := int64(stat.Bavail) * int64(stat.Bsize)
+	diskFreeSpaceInMb := diskFreeSpaceInBytes / (1024 * 1024)
+
+	return diskFreeSpaceInMb, nil
+}

src/catalog/cacheservice/disk_space_windows.go

@@ -0,0 +1,46 @@
+package cacheservice
+
+import (
+	"errors"
+	"syscall"
+	"unsafe"
+)
+
+func (cs *CacheService) getFreeDiskSpace() (int64, error) {
+	// Convert Go string to UTF16 pointer
+	lpDirectoryName, err := syscall.UTF16PtrFromString(cs.cacheFolder)
+	if err != nil {
+		return 0, err
+	}
+
+	// Load the kernel32 DLL and find the procedure
+	kernel32 := syscall.MustLoadDLL("kernel32.dll")
+	defer kernel32.Release()
+
+	procGetDiskFreeSpaceExW := kernel32.MustFindProc("GetDiskFreeSpaceExW")
+
+	var freeBytesAvailable, totalNumberOfBytes, totalNumberOfFreeBytes uint64
+
+	// Call the Windows API
+	r, _, callErr := procGetDiskFreeSpaceExW.Call(
+		uintptr(unsafe.Pointer(lpDirectoryName)),
+		uintptr(unsafe.Pointer(&freeBytesAvailable)),
+		uintptr(unsafe.Pointer(&totalNumberOfBytes)),
+		uintptr(unsafe.Pointer(&totalNumberOfFreeBytes)),
+	)
+	if r == 0 {
+		// The call failed
+		if callErr != syscall.Errno(0) {
+			return 0, callErr
+		}
+		return 0, errors.New("GetDiskFreeSpaceExW failed, unknown error")
+	}
+
+	// freeBytesAvailable is the number of bytes available to the *caller* (which
+	// can differ from the total free bytes if quotas are in use, but in most
+	// cases is the same).
+	// Convert bytes -> MB
+	diskFreeSpaceInMB := freeBytesAvailable / (1024 * 1024)
+
+	return int64(diskFreeSpaceInMB), nil
+}

src/catalog/cacheservice/main.go

@@ -6,7 +6,6 @@ import (
 	"os"
 	"path/filepath"
 	"strings"
-	"syscall"
 	"time"
 
 	"github.com/Parallels/prl-devops-service/basecontext"
@@ -150,21 +149,6 @@ func (cs *CacheService) notify(message string) {
 	cs.notifications.NotifyInfo(message)
 }
 
-func (cs *CacheService) getFreeDiskSpace() (int64, error) {
-	// We will be getting the free disk space from the disk
-	var stat syscall.Statfs_t
-	err := syscall.Statfs(cs.cacheFolder, &stat)
-	if err != nil {
-		return 0, errors.NewFromErrorWithCode(err, 500)
-	}
-
-	// Available blocks * size per block = available space in bytes
-	diskFreeSpaceInBytes := int64(stat.Bavail) * int64(stat.Bsize)
-	diskFreeSpaceInMb := diskFreeSpaceInBytes / (1024 * 1024)
-
-	return diskFreeSpaceInMb, nil
-}
-
 func (cs *CacheService) getCacheTotalSize() (int64, error) {
 	// We will be getting the total size of the cache folder
 	totalSize, err := helpers.DirSize(cs.cacheFolder)