chore: fix sample codes to use decide apis (#414)

Author: jaeopt

java-quickstart/src/main/java/com/optimizely/Example.java

@@ -17,11 +17,12 @@
 
 import com.optimizely.ab.Optimizely;
 import com.optimizely.ab.OptimizelyFactory;
-import com.optimizely.ab.config.Variation;
+import com.optimizely.ab.OptimizelyUserContext;
+import com.optimizely.ab.optimizelydecision.OptimizelyDecision;
+import com.optimizely.ab.optimizelyjson.OptimizelyJSON;
 
 import java.util.Collections;
 import java.util.Map;
-
 import java.util.Random;
 import java.util.concurrent.TimeUnit;
 
@@ -33,20 +34,23 @@ private Example(Optimizely optimizely) {
  this.optimizely = optimizely;
  }
 
- private void processVisitor(String userId, Map<String, String> attributes) {
- Variation variation = optimizely.activate("background_experiment", userId, attributes);
+ private void processVisitor(String userId, Map<String, Object> attributes) {
+ OptimizelyUserContext user = optimizely.createUserContext(userId, attributes);
+
+ OptimizelyDecision decision = user.decide("eet_feature");
+ String variationKey = decision.getVariationKey();
+
+ if (variationKey != null) {
+ boolean enabled = decision.getEnabled();
+ System.out.println("[Example] feature enabled: " + enabled);
 
- if (variation != null) {
- optimizely.track("sample_conversion", userId, attributes);
- System.out.println(String.format("Found variation %s", variation.getKey()));
+ OptimizelyJSON variables = decision.getVariables();
+ System.out.println("[Example] feature variables: " + variables.toString());
+
+ user.trackEvent("eet_conversion");
  }
  else {
- System.out.println("didn't get a variation");
- }
-
- if (optimizely.isFeatureEnabled("eet_feature", userId, attributes)) {
- optimizely.track("eet_conversion", userId, attributes);
- System.out.println("feature enabled");
+ System.out.println("[Example] decision failed: " + decision.getReasons().toString());
  }
  }
 
@@ -57,7 +61,7 @@ public static void main(String[] args) throws InterruptedException {
  Random random = new Random();
 
  for (int i = 0; i < 10; i++) {
- String userId = String.valueOf(random.nextInt());
+ String userId = String.valueOf(random.nextInt(Integer.MAX_VALUE));
  example.processVisitor(userId, Collections.emptyMap());
  TimeUnit.MILLISECONDS.sleep(500);
  }