fix read locks

main.go

@@ -74,16 +74,16 @@ func (c *MetadataCache) Delete(o int64) {
 }
 
 func (c *MetadataCache) Get(o int64, k string) ([]string, error) {
-	log.Printf("Get %d, %s", o, k)
+	log.Printf("Get %d, %s.\n", o, k)
 	// Check cache for entry
 	c.lock.RLock()
-	defer c.lock.Unlock()
+	defer c.lock.RUnlock()
 	object, ok := c.objects[o]
 	if !ok {
 		// Object is not in the cache so let's load it up
 		var tmpobject metadataObject
 		c.objects[o] = tmpobject
-		c.lock.Unlock()
+		c.lock.RUnlock()
 		tmpobject.loading.Do(func() {
 			// Only do this once even if concurrent requests come in
 			tmpobject.entries = loadDbEntries(c.objectType, o)
@@ -92,10 +92,10 @@ func (c *MetadataCache) Get(o int64, k string) ([]string, error) {
 
 	}
 	object.lock.RLock()
-	defer object.lock.Unlock()
+	defer object.lock.RUnlock()
 	// Load entries from db
 	entries, ok := object.entries[k]
-	object.lock.Unlock()
+	object.lock.RUnlock()
 	object.lock.Lock()
 	object.lastHit=time.Now()
 	object.lock.Unlock()