Update lookup_cache.go

MatchingCache struct hold a RWLock, so Get operation of Cache should use RLock properly, nor WLock

Update lookup_cache.go
49f4f242 · zhangke · 1cba0557 · 49f4f242
Commit 49f4f242 authored May 16, 2016 by zhangke
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lookup_cache.go pkg/controller/lookup_cache.go +2 -2

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--- a/pkg/controller/lookup_cache.go
+++ b/pkg/controller/lookup_cache.go
@@ -72,8 +72,8 @@ func (c *MatchingCache) Add(labelObj objectWithMeta, selectorObj objectWithMeta)
 // we need check in the external request to ensure the cache data is not dirty.
 func (c *MatchingCache) GetMatchingObject(labelObj objectWithMeta) (controller interface{}, exists bool) {
 	key := keyFunc(labelObj)
-	c.mutex.Lock()
+	c.mutex.RLock()
-	defer c.mutex.Unlock()
+	defer c.mutex.RUnlock()
 	return c.cache.Get(key)
 }