fixup! feat: implemented support for tracking

Signed-off-by: Bernd Warmuth <[email protected]>

Author: Bernd Warmuth

src/main/java/dev/openfeature/sdk/OpenFeatureClient.java

@@ -81,7 +81,7 @@ public ProviderState getProviderState() {
      */
     @Override
     public void track(String trackingEventName) {
-        Objects.requireNonNull(trackingEventName);
+        validateTrackingEventName(trackingEventName);
         invokeTrack(trackingEventName, null, null);
     }
 
@@ -91,7 +91,7 @@ public void track(String trackingEventName) {
      */
     @Override
     public void track(String trackingEventName, EvaluationContext context) {
-        Objects.requireNonNull(trackingEventName);
+        validateTrackingEventName(trackingEventName);
         Objects.requireNonNull(context);
         invokeTrack(trackingEventName, context, null);
     }
@@ -101,7 +101,7 @@ public void track(String trackingEventName, EvaluationContext context) {
      */
     @Override
     public void track(String trackingEventName, TrackingEventDetails details) {
-        Objects.requireNonNull(trackingEventName);
+        validateTrackingEventName(trackingEventName);
         Objects.requireNonNull(details);
         invokeTrack(trackingEventName, null, details);
     }
@@ -111,7 +111,7 @@ public void track(String trackingEventName, TrackingEventDetails details) {
      */
     @Override
     public void track(String trackingEventName, EvaluationContext context, TrackingEventDetails details) {
-        Objects.requireNonNull(trackingEventName);
+        validateTrackingEventName(trackingEventName);
         Objects.requireNonNull(context);
         Objects.requireNonNull(details);
         invokeTrack(trackingEventName, mergeEvaluationContext(context), details);
@@ -229,10 +229,14 @@ private static <T> void enrichDetailsWithErrorDefaults(T defaultValue, FlagEvalu
         details.setReason(Reason.ERROR.toString());
     }
 
-    private void invokeTrack(String trackingEventName, EvaluationContext context, TrackingEventDetails details) {
-        if ("".equals(trackingEventName)) {
+    private static void validateTrackingEventName(String str) {
+        Objects.requireNonNull(str);
+        if (str.isEmpty()) {
             throw new IllegalArgumentException("trackingEventName cannot be empty");
         }
+    }
+
+    private void invokeTrack(String trackingEventName, EvaluationContext context, TrackingEventDetails details) {
         openfeatureApi.getFeatureProviderStateManager(domain)
                 .getProvider()
                 .track(trackingEventName, mergeEvaluationContext(context), details);