feat: async latest tag app check is update available (#170)

go.mod

@@ -3,6 +3,7 @@ module github.com/IceWhaleTech/CasaOS-AppManagement
 go 1.21
 
 require (
+	github.com/bluele/gcache v0.0.2
 	github.com/deepmap/oapi-codegen v1.12.4
 	github.com/docker/compose/v2 v2.23.3
 	github.com/docker/distribution v2.8.2+incompatible

go.sum

@@ -260,6 +260,8 @@ github.com/bgentry/go-netrc v0.0.0-20140422174119-9fd32a8b3d3d h1:xDfNPAt8lFiC1U
 github.com/bgentry/go-netrc v0.0.0-20140422174119-9fd32a8b3d3d/go.mod h1:6QX/PXZ00z/TKoufEY6K/a0k6AhaJrQKdFe6OfVXsa4=
 github.com/bitly/go-hostpool v0.1.0/go.mod h1:4gOCgp6+NZnVqlKyZ/iBZFTAJKembaVENUpMkpg42fw=
 github.com/bitly/go-simplejson v0.5.0/go.mod h1:cXHtHw4XUPsvGaxgjIAn8PhEWG9NfngEKAMDJEczWVA=
+github.com/bluele/gcache v0.0.2 h1:WcbfdXICg7G/DGBh1PFfcirkWOQV+v077yF1pSy3DGw=
+github.com/bluele/gcache v0.0.2/go.mod h1:m15KV+ECjptwSPxKhOhQoAFQVtUFjTVkc3H8o0t/fp0=
 github.com/bmatcuk/doublestar v1.1.1/go.mod h1:UD6OnuiIn0yFxxA2le/rnRU1G4RaI4UvFv1sNto9p6w=
 github.com/bmizerany/assert v0.0.0-20160611221934-b7ed37b82869/go.mod h1:Ekp36dRnpXw/yCqJaO+ZrUyxD+3VXMFFr56k5XYrpB4=
 github.com/buger/goterm v1.0.4 h1:Z9YvGmOih81P0FbVtEYTFF6YsSgxSUKEhf/f9bTMXbY=

service/compose_app.go

@@ -14,6 +14,7 @@ import (
 	"time"
 
 	v1 "github.com/IceWhaleTech/CasaOS-AppManagement/service/v1"
+	"github.com/bluele/gcache"
 
 	"github.com/IceWhaleTech/CasaOS-AppManagement/codegen"
 	"github.com/IceWhaleTech/CasaOS-AppManagement/common"
@@ -189,6 +190,11 @@ func (a *ComposeApp) IsUpdateAvailable() bool {
 	return a.IsUpdateAvailableWith(storeComposeApp)
 }
 
+var latestIsUpdateAvailableCache = gcache.New(100).
+	LRU().
+	Expiration(1 * time.Hour).
+	Build()
+
 func (a *ComposeApp) IsUpdateAvailableWith(storeComposeApp *ComposeApp) bool {
 	storeComposeAppStoreInfo, err := storeComposeApp.StoreInfo(false)
 	if err != nil || storeComposeAppStoreInfo == nil {
@@ -208,29 +214,43 @@ func (a *ComposeApp) IsUpdateAvailableWith(storeComposeApp *ComposeApp) bool {
 
 	// TODO to async the check for consist with the version tag app
 	if mainAppTag == "latest" {
-		// check image digest when tag is latest.
-		ctx := context.Background()
-		cli, err := client.NewClientWithOpts(client.FromEnv, client.WithAPIVersionNegotiation())
-		defer cli.Close()
+		isUpdateAvailable, err := latestIsUpdateAvailableCache.Get(mainAppImage)
+		if err != nil {
+			go func() {
+				// check image digest when tag is latest.
+				ctx := context.Background()
+				cli, err := client.NewClientWithOpts(client.FromEnv, client.WithAPIVersionNegotiation())
+				if err != nil {
+					logger.Error("failed to create docker client", zap.Error(err))
+				}
+				defer cli.Close()
 
-		imageInfo, _, err := cli.ImageInspectWithRaw(ctx, mainAppImage)
+				imageInfo, _, err := cli.ImageInspectWithRaw(ctx, mainAppImage)
+
+				if err != nil {
+					logger.Error("failed to inspect image", zap.Error(err), zap.String("name", mainAppImage))
+					latestIsUpdateAvailableCache.Set(mainAppImage, false)
+				}
+				match, err := docker.CompareDigest(storeComposeApp.Services[0].Image, imageInfo.RepoDigests)
+				if err != nil {
+					logger.Error("failed to compare digest", zap.Error(err), zap.String("name", mainAppImage))
+					latestIsUpdateAvailableCache.Set(mainAppImage, false)
+				}
+				if match {
+					logger.Info("main app image tag is latest, thus no update available", zap.String("image", mainApp.Image))
+					latestIsUpdateAvailableCache.Set(mainAppImage, false)
+				} else {
+					logger.Info("main app image tag is latest, but digest is different, thus update is available", zap.String("image", mainApp.Image))
+					latestIsUpdateAvailableCache.Set(mainAppImage, true)
+				}
+			}()
 
-		if err != nil {
-			logger.Error("failed to inspect image", zap.Error(err), zap.String("name", mainAppImage))
-			return false
-		}
-		match, err := docker.CompareDigest(storeComposeApp.Services[0].Image, imageInfo.RepoDigests)
-		if err != nil {
-			logger.Error("failed to compare digest", zap.Error(err), zap.String("name", mainAppImage))
 			return false
 		}
-		if match {
-			logger.Info("main app image tag is latest, thus no update available", zap.String("image", mainApp.Image))
-			return false
-		} else {
-			logger.Info("main app image tag is latest, but digest is different, thus update is available", zap.String("image", mainApp.Image))
+		if isUpdateAvailable.(bool) {
 			return true
 		}
+		return false
 	}
 
 	storeMainApp := storeComposeApp.App(mainAppName)