Added code to prevent deletion of active fn pod (#1724)

Co-authored-by: Vishal <vishal-biyani@users.noreply.github.com>

pkg/executor/fscache/functionServiceCache.go

@@ -136,7 +136,7 @@ func (fsc *FunctionServiceCache) service() {
 			}
 			fsc.logger.Info("function service cache", zap.Int("item_count", len(funcCopy)), zap.Strings("cache", info))
 		case LISTOLDPOOL:
-			fscs := fsc.connFunctionCache.ListValue()
+			fscs := fsc.connFunctionCache.ListAvailableValue()
 			funcObjects := make([]*FuncSvc, 0)
 			for _, funcSvc := range fscs {
 				fsvc := funcSvc.(*FuncSvc)

pkg/newcache/poolcache.go

@@ -28,7 +28,7 @@ type requestType int
 
 const (
 	getValue requestType = iota
-	listValue
+	listAvailableValue
 	getTotalAvailable
 	setValue
 	markAvailable
@@ -99,11 +99,13 @@ func (c *Cache) service() {
 				resp.error = ferror.MakeError(ferror.ErrorNotFound, fmt.Sprintf("funtion '%v' No inactive function found", req.function))
 			}
 			req.responseChannel <- resp
-		case listValue:
+		case listAvailableValue:
 			vals := make([]interface{}, 0)
 			for _, values := range c.cache {
 				for _, value := range values {
-					vals = append(vals, value.val)
+					if !value.isActive {
+						vals = append(vals, value.val)
+					}
 				}
 			}
 			resp.allValues = vals
@@ -159,11 +161,11 @@ func (c *Cache) GetValue(function interface{}) (interface{}, error) {
 	return resp.value, resp.error
 }
 
-// ListValue returns a list of the function services stored in the Cache
-func (c *Cache) ListValue() []interface{} {
+// ListAvailableValue returns a list of the available function services stored in the Cache
+func (c *Cache) ListAvailableValue() []interface{} {
 	respChannel := make(chan *response)
 	c.requestChannel <- &request{
-		requestType:     listValue,
+		requestType:     listAvailableValue,
 		responseChannel: respChannel,
 	}
 	resp := <-respChannel

pkg/newcache/poolcache_test.go

@@ -21,9 +21,9 @@ func TestPoolCache(t *testing.T) {
 
 	c.SetValue("func2", "ip22", "value22")
 
-	cc := c.ListValue()
-	if len(cc) != 3 {
-		log.Panicf("expected 2 items")
+	cc := c.ListAvailableValue()
+	if len(cc) != 0 {
+		log.Panicf("expected 0 available items")
 	}
 	active := c.GetTotalAvailable("func2")
 	if active != 2 {
@@ -33,7 +33,11 @@ func TestPoolCache(t *testing.T) {
 	c.DeleteValue("func2", "ip2")
 
 	c.MarkAvailable("func", "ip")
+	cc = c.ListAvailableValue()
 
+	if len(cc) != 1 {
+		log.Panic("expected 1 available items, received", len(cc))
+	}
 	_, err := c.GetValue("func")
 	checkErr(err)