feat: replace registry with prometheus

.github/workflows/docs.yml

@@ -14,7 +14,7 @@ jobs:
       - name: Set up Go
         uses: actions/setup-go@v6
         with:
-          go-version: 1.24
+          go-version-file: go.mod
 
       - name: Install pallas
         run: |

.github/workflows/go.yml

@@ -19,7 +19,7 @@ jobs:
     - name: Set up Go
       uses: actions/setup-go@v6
       with:
-        go-version: 1.24
+        go-version-file: go.mod
 
     - name: Install Build Dependencies
       run: |

.github/workflows/release.yml

@@ -19,7 +19,7 @@ jobs:
       - name: Set up Go
         uses: actions/setup-go@v6
         with:
-          go-version: 1.24
+          go-version-file: go.mod
 
       - name: Install Build Dependencies
         run: |

cmd/upgrade.go

@@ -19,6 +19,7 @@ import (
 	"os"
 	"strings"
 
+	digest "github.com/opencontainers/go-digest"
 	"github.com/spf13/cobra"
 
 	"github.com/vanilla-os/abroot/core"
@@ -203,7 +204,7 @@ func upgrade(cmd *cobra.Command, args []string) error {
 		}
 
 		if raw {
-			newDigestIfHasUpdate := ""
+			var newDigestIfHasUpdate digest.Digest = ""
 			if res {
 				newDigestIfHasUpdate = newDigest
 			}

core/image.go

@@ -19,21 +19,23 @@ import (
 	"os"
 	"path/filepath"
 	"time"
+
+	digest "github.com/opencontainers/go-digest"
 )
 
 // The ABImage is the representation of an OCI image used by ABRoot, it
 // contains the digest, the timestamp and the image name. If you need to
 // investigate the current ABImage on an ABRoot system, you can find it
 // at /abimage.abr
 type ABImage struct {
-	Digest    string    `json:"digest"`
-	Timestamp time.Time `json:"timestamp"`
-	Image     string    `json:"image"`
+	Digest    digest.Digest `json:"digest"`
+	Timestamp time.Time     `json:"timestamp"`
+	Image     string        `json:"image"`
 }
 
 // NewABImage creates a new ABImage instance and returns a pointer to it,
 // if the digest is empty, it returns an error
-func NewABImage(digest string, image string) (*ABImage, error) {
+func NewABImage(digest digest.Digest, image string) (*ABImage, error) {
 	if digest == "" {
 		return nil, fmt.Errorf("NewABImage: digest is empty")
 	}

core/oci.go

@@ -27,6 +27,7 @@ import (
 	"github.com/containers/image/v5/types"
 	"github.com/containers/storage"
 	humanize "github.com/dustin/go-humanize"
+	digest "github.com/opencontainers/go-digest"
 	"github.com/pterm/pterm"
 	"github.com/vanilla-os/abroot/settings"
 	"github.com/vanilla-os/prometheus"
@@ -218,11 +219,13 @@ func pullImageWithProgressbar(pt *prometheus.Prometheus, name string, image *Ima
 
 	progressCh := make(chan types.ProgressProperties)
 	manifestCh := make(chan prometheus.OciManifest)
+	errorCh := make(chan error)
 
 	defer close(progressCh)
 	defer close(manifestCh)
+	defer close(errorCh)
 
-	err := pt.PullImageAsync(image.From, name, progressCh, manifestCh)
+	err := pt.PullImageAsync(image.From, name, progressCh, manifestCh, errorCh)
 	if err != nil {
 		PrintVerboseErr("pullImageWithProgressbar", 0, err)
 		return err
@@ -360,3 +363,36 @@ func DeleteAllButLatestImage() error {
 
 	return nil
 }
+
+// HasUpdate checks if the image/tag from the registry has a different digest
+// it returns the new digest and a boolean indicating if an update is available
+func HasUpdate(oldDigest digest.Digest) (digest.Digest, bool, error) {
+	PrintVerboseInfo("OCI.HasUpdate", "Checking for updates ...")
+
+	pt, err := prometheus.NewPrometheus(
+		"/var/lib/abroot/storage",
+		"overlay",
+		settings.Cnf.MaxParallelDownloads,
+	)
+	if err != nil {
+		PrintVerboseErr("OCI.HasUpdate", 0, err)
+		return "", false, err
+	}
+
+	imageName := fmt.Sprintf("%s/%s:%s", settings.Cnf.Registry, settings.Cnf.Name, settings.Cnf.Tag)
+	PrintVerboseInfo("OCI.HasUpdate", "checking image: ", imageName)
+
+	_, newDigest, err := pt.PullManifestOnly(imageName)
+	if err != nil {
+		PrintVerboseErr("OCI.HasUpdate", 1, err)
+		return "", false, err
+	}
+
+	if newDigest == oldDigest {
+		PrintVerboseInfo("OCI.HasUpdate", "no update available")
+		return "", false, nil
+	}
+
+	PrintVerboseInfo("OCI.HasUpdate", "update available. Old digest: ", oldDigest, ", new digest: ", newDigest)
+	return newDigest, true, nil
+}

core/package-diff.go

@@ -20,14 +20,15 @@ import (
 	"net/http"
 	"strings"
 
+	digest "github.com/opencontainers/go-digest"
 	"github.com/vanilla-os/abroot/extras/dpkg"
 	"github.com/vanilla-os/abroot/settings"
 	"github.com/vanilla-os/differ/diff"
 )
 
 // BaseImagePackageDiff retrieves the added, removed, upgraded and downgraded
 // base packages (the ones bundled with the image).
-func BaseImagePackageDiff(currentDigest, newDigest string) (
+func BaseImagePackageDiff(currentDigest, newDigest digest.Digest) (
 	added, upgraded, downgraded, removed []diff.PackageDiff,
 	err error,
 ) {