Invalidate stale router cache entry with podIP's for deleted pods. (#546)

The router's cache entry for a function might become stale if the pod that had the function specialized gets deleted somehow. In such a case, we'd retry getting a new service for the function from executor and retry forwarding the user request to the newly created service.
2018-04-05 13:47:47 -07:00
parent db2f620121
commit 8014c83b02
10 changed files with 302 additions and 90 deletions
@@ -247,14 +247,18 @@ func (fsc *FunctionServiceCache) _touchByAddress(address string) error {
 	return nil
 }

+func (fsc *FunctionServiceCache) DeleteEntry(fsvc *FuncSvc) {
+	fsc.byFunction.Delete(crd.CacheKey(fsvc.Function))
+	fsc.byAddress.Delete(fsvc.Address)
+	fsc.byFunctionUID.Delete(fsvc.Function.UID)
+}
+
 func (fsc *FunctionServiceCache) DeleteOld(fsvc *FuncSvc, minAge time.Duration) (bool, error) {
 	if time.Since(fsvc.Atime) < minAge {
 		return false, nil
 	}

-	fsc.byFunction.Delete(crd.CacheKey(fsvc.Function))
-	fsc.byAddress.Delete(fsvc.Address)
-	fsc.byFunctionUID.Delete(fsvc.Function.UID)
+	fsc.DeleteEntry(fsvc)

 	return true, nil
 }