feat: boot.img.lz4

cmd/dkl-local-server/cas-cleaner.go

@@ -0,0 +1,69 @@
+package main
+
+import (
+	"flag"
+	"log"
+	"sort"
+	"time"
+)
+
+var (
+	cacheCleanDelay = flag.Duration("cache-clean-delay", 10*time.Minute, "Time between cache cleanups")
+)
+
+func casCleaner() {
+	for {
+		err := cleanCAS()
+		if err != nil {
+			log.Print("warn: couldn't clean cache: ", err)
+		}
+
+		time.Sleep(*cacheCleanDelay)
+	}
+}
+
+func cleanCAS() error {
+	cfg, err := readConfig()
+	if err != nil {
+		return err
+	}
+
+	activeTags := make([]string, len(cfg.Hosts))
+
+	for i, host := range cfg.Hosts {
+		ctx, err := newRenderContext(host, cfg)
+		if err != nil {
+			return err
+		}
+
+		tag, err := ctx.Tag()
+		if err != nil {
+			return err
+		}
+
+		activeTags[i] = tag
+	}
+
+	tags, err := casStore.Tags()
+	if err != nil {
+		return err
+	}
+
+	sort.Strings(activeTags)
+
+	for _, tag := range tags {
+		idx := sort.SearchStrings(activeTags, tag)
+
+		if idx < len(activeTags) && activeTags[idx] == tag {
+			continue
+		}
+
+		// tag is not present in active tags
+		log.Print("cache cleaner: removing tag ", tag)
+		if err := casStore.Remove(tag); err != nil {
+			log.Printf("cache cleaner: failed to remove tag %s: %v", tag, err)
+		}
+	}
+
+	return nil
+}