Remove caching of collectors.

collector/collector.go

@@ -50,13 +50,11 @@ const (
 )
 
 var (
-	factories              = make(map[string]func(config *NodeCollectorConfig, logger log.Logger) (Collector, error))
-	initiatedCollectorsMtx = sync.Mutex{}
-	initiatedCollectors    = make(map[string]Collector)
-	collectorStateGlobal   = make(map[string]bool)
-	collectorFlagState     = make(map[string]*bool)
-	availableCollectors    = make([]string, 0)
-	forcedCollectors       = map[string]bool{} // collectors which have been explicitly enabled or disabled
+	factories            = make(map[string]func(config *NodeCollectorConfig, logger log.Logger) (Collector, error))
+	collectorStateGlobal = make(map[string]bool)
+	collectorFlagState   = make(map[string]*bool)
+	availableCollectors  = make([]string, 0)
+	forcedCollectors     = map[string]bool{} // collectors which have been explicitly enabled or disabled
 )
 
 func GetDefaults() map[string]bool {
@@ -141,22 +139,16 @@ func NewNodeCollector(config *NodeCollectorConfig, enabledCollectors map[string]
 		f[filter] = true
 	}
 	collectors := make(map[string]Collector)
-	initiatedCollectorsMtx.Lock()
-	defer initiatedCollectorsMtx.Unlock()
+
 	for key, enabled := range enabledCollectors {
 		if !enabled || (len(f) > 0 && !f[key]) {
 			continue
 		}
-		if collector, ok := initiatedCollectors[key]; ok {
-			collectors[key] = collector
-		} else {
-			collector, err := factories[key](config, log.With(logger, "collector", key))
-			if err != nil {
-				return nil, err
-			}
-			collectors[key] = collector
-			initiatedCollectors[key] = collector
+		collector, err := factories[key](config, log.With(logger, "collector", key))
+		if err != nil {
+			return nil, err
 		}
+		collectors[key] = collector
 	}
 	return &NodeCollector{Collectors: collectors, logger: logger}, nil
 }