Level sets dependency graph to consume etcd 3.1.5

vendor/github.com/karlseguin/ccache/secondarycache.go

@@ -0,0 +1,72 @@
+package ccache
+
+import "time"
+
+type SecondaryCache struct {
+	bucket *bucket
+	pCache *LayeredCache
+}
+
+// Get the secondary key.
+// The semantics are the same as for LayeredCache.Get
+func (s *SecondaryCache) Get(secondary string) *Item {
+	return s.bucket.get(secondary)
+}
+
+// Set the secondary key to a value.
+// The semantics are the same as for LayeredCache.Set
+func (s *SecondaryCache) Set(secondary string, value interface{}, duration time.Duration) *Item {
+	item, existing := s.bucket.set(secondary, value, duration)
+	if existing != nil {
+		s.pCache.deletables <- existing
+	}
+	s.pCache.promote(item)
+	return item
+}
+
+// Fetch or set a secondary key.
+// The semantics are the same as for LayeredCache.Fetch
+func (s *SecondaryCache) Fetch(secondary string, duration time.Duration, fetch func() (interface{}, error)) (*Item, error) {
+	item := s.Get(secondary)
+	if item != nil {
+		return item, nil
+	}
+	value, err := fetch()
+	if err != nil {
+		return nil, err
+	}
+	return s.Set(secondary, value, duration), nil
+}
+
+// Delete a secondary key.
+// The semantics are the same as for LayeredCache.Delete
+func (s *SecondaryCache) Delete(secondary string) bool {
+	item := s.bucket.delete(secondary)
+	if item != nil {
+		s.pCache.deletables <- item
+		return true
+	}
+	return false
+}
+
+// Replace a secondary key.
+// The semantics are the same as for LayeredCache.Replace
+func (s *SecondaryCache) Replace(secondary string, value interface{}) bool {
+	item := s.Get(secondary)
+	if item == nil {
+		return false
+	}
+	s.Set(secondary, value, item.TTL())
+	return true
+}
+
+// Track a secondary key.
+// The semantics are the same as for LayeredCache.TrackingGet
+func (c *SecondaryCache) TrackingGet(secondary string) TrackedItem {
+	item := c.Get(secondary)
+	if item == nil {
+		return NilTracked
+	}
+	item.track()
+	return item
+}