Merge pull request #8 from optimizely/get_variation_addition

Adds in bulk of GetVariation

Author: tjj5036

optimizely/optimizely.go

@@ -80,11 +80,13 @@ func (client *OptimizelyClient) Activate(experiment_key string, user_id string,
 
 }
 
-// GetVariation gets the variation where the visitor will be bucketed
+// GetVariation gets the variation key where the visitor will be bucketed
 // Experiment_key: experiment which needs to be activated
 // User_id: ID for user
 // Returns: variation key representing the variation the user will be
 // bucketed into
-func (client *OptimizelyClient) GetVariation(experient_key string, user_id string) {
-
+func (client *OptimizelyClient) GetVariation(experiment_key string, user_id string) string {
+	variation_id := client.Bucket(experiment_key, user_id)
+	variation_key := GetVariationKeyFromId(experiment_key, variation_id, client.project_config.Experiments)
+	return variation_key
 }

optimizely/utils.go

@@ -85,3 +85,19 @@ func BuildExperimentVariationParams(
 		}
 	}
 }
+
+// Gets variation key given experiment key and variation id
+// experiment_key: key representing parent experiment of variation
+// variation_id: ID of the variation
+// experiments: Array of ExperimentEntities
+// Returns: variation key (string)
+func GetVariationKeyFromId(experiment_key string, variation_id string, experiments []ExperimentEntity) string {
+	for i := 0; i < len(experiments); i++ {
+		for j := 0; j < len(experiments[i].Variations); j++ {
+			if experiments[i].Variations[j].Id == variation_id {
+				return experiments[i].Variations[j].Key
+			}
+		}
+	}
+	return ""
+}