/// <summary>
/// Returns the feature variable corresponding to the variableKey passed. It typecasts the value to the corresponding value type found in settings_file
/// </summary>
/// <param name="campaignKey">Campaign key to uniquely identify a server-side campaign.</param>
/// <param name="variableKey">Campaign key to uniquely identify a server-side campaign.</param>
/// <param name="userId">User ID which uniquely identifies each user.</param>
/// <param name="options">Dictionary for passing extra parameters to activate</param>
/// <returns>
/// The name of the variation in which the user is bucketed, or null if the user doesn't qualify to become a part of the campaign.
/// </returns>
public dynamic GetFeatureVariableValue(string campaignKey, string variableKey, string userId, Dictionary <string, dynamic> options = null)
{
if (options == null)
{
options = new Dictionary <string, dynamic>();
}
Dictionary <string, dynamic> customVariables = options.ContainsKey("customVariables") ? options["customVariables"] : null;
Dictionary <string, dynamic> variationTargetingVariables = options.ContainsKey("variationTargetingVariables") ? options["variationTargetingVariables"] : null;
var variables = new List <Dictionary <string, dynamic> >();
var variable = new Dictionary <string, dynamic>();
if (this._validator.GetFeatureVariableValue(campaignKey, variableKey, userId, options))
{
var campaign = this._campaignAllocator.GetCampaign(this._settings, campaignKey);
if (campaign == null || campaign.Status != Constants.CampaignStatus.RUNNING)
{
LogErrorMessage.CampaignNotRunning(typeof(IVWOClient).FullName, campaignKey, nameof(GetFeatureVariableValue));
return(null);
}
if (campaign.Type == Constants.CampaignTypes.VISUAL_AB)
{
LogErrorMessage.InvalidApi(typeof(IVWOClient).FullName, userId, campaignKey, campaign.Type, nameof(GetFeatureVariableValue));
return(null);
}
var assignedVariation = this.AllocateVariation(campaignKey, userId, campaign, customVariables, variationTargetingVariables, apiName: nameof(GetFeatureVariableValue));
if (campaign.Type == Constants.CampaignTypes.FEATURE_ROLLOUT)
{
variables = campaign.Variables;
}
else if (campaign.Type == Constants.CampaignTypes.FEATURE_TEST)
{
if (!assignedVariation.Variation.IsFeatureEnabled)
{
LogInfoMessage.FeatureNotEnabledForUser(typeof(IVWOClient).FullName, campaignKey, userId, nameof(GetFeatureVariableValue));
assignedVariation = this.GetControlVariation(campaign, campaign.Variations.Find(1, (new VariationAllocator()).GetVariationId));
}
else
{
LogInfoMessage.FeatureEnabledForUser(typeof(IVWOClient).FullName, campaignKey, userId, nameof(GetFeatureVariableValue));
}
variables = assignedVariation.Variation.Variables;
}
variable = this.GetVariable(variables, variableKey);
if (variable == null || variable.Count == 0)
{
LogErrorMessage.VariableNotFound(typeof(IVWOClient).FullName, variableKey, campaignKey, campaign.Type, userId, nameof(GetFeatureVariableValue));
return(null);
}
else
{
LogInfoMessage.VariableFound(typeof(IVWOClient).FullName, variableKey, campaignKey, campaign.Type, variable["value"].ToString(), userId, nameof(GetFeatureVariableValue));
}
return(this._segmentEvaluator.getTypeCastedFeatureValue(variable["value"], variable["type"]));
}
return(null);
}
