patch for undeleted tmp

.gitignore

@@ -26,3 +26,4 @@ coverage.txt
 .DS_Store
 /webp_server_go
 /metadata/*
+/.idea/inspectionProfiles/Project_Default.xml

config/config.go

@@ -55,7 +55,7 @@ var (
 	PrefetchForeground  bool // Standalone prefetch, prefetch and exit
 	AllowNonImage       bool
 	Config              = NewWebPConfig()
-	Version             = "0.13.6"
+	Version             = "0.13.7"
 	WriteLock           = cache.New(5*time.Minute, 10*time.Minute)
 	ConvertLock         = cache.New(5*time.Minute, 10*time.Minute)
 	LocalHostAlias      = "local"

schedule/cache_clean.go

@@ -113,3 +113,27 @@ func CleanCache() {
 		}
 	}
 }
+
+func DeleteDeadCache() {
+	ticker := time.NewTicker(30 * time.Second)
+	defer ticker.Stop()
+	threshold := time.Now().Add(-10 * time.Minute)
+	for {
+		select {
+		case <-ticker.C:
+			_ = filepath.Walk(os.TempDir()+"vips-", func(path string, info os.FileInfo, err error) error {
+				log.Debugf("Checking possible dead cache: %s", path)
+				if err != nil {
+					return err
+				}
+				if info.IsDir() && info.ModTime().Before(threshold) {
+					// only delete directory
+					log.Warnf("Deleting: %s", path)
+					_ = os.RemoveAll(path)
+					return filepath.SkipDir
+				}
+				return nil
+			})
+		}
+	}
+}

webp-server.go

@@ -98,6 +98,7 @@ func init() {
 }
 
 func main() {
+	go schedule.DeleteDeadCache()
 	if config.Config.MaxCacheSize != 0 {
 		go schedule.CleanCache()
 	}