/// <see cref="ILdClient.Track(string, User, string)"/>
public void Track(string name, User user, string data)
{
if (user == null || user.Key == null)
{
Log.Warn("Track called with null user or null user key");
}
_eventStore.Add(new CustomEvent(name, EventUser.FromUser(user, _configuration), data));
}
/// <see cref="ILdClient.Identify(User)"/>
public void Identify(User user)
{
if (user == null || user.Key == null)
{
Log.Warn("Identify called with null user or null user key");
}
_eventStore.Add(new IdentifyEvent(EventUser.FromUser(user, _configuration)));
}
// Returning either a nil EvalResult or EvalResult.value indicates prereq failure/error.
private JToken Evaluate(User user, IFeatureStore featureStore, IList <FeatureRequestEvent> events, Configuration config)
{
var prereqOk = true;
if (Prerequisites != null)
{
foreach (var prereq in Prerequisites)
{
var prereqFeatureFlag = featureStore.Get(VersionedDataKind.Features, prereq.Key);
JToken prereqEvalResult = null;
if (prereqFeatureFlag == null)
{
Log.ErrorFormat("Could not retrieve prerequisite flag: {0} when evaluating: {1}",
prereq.Key,
Key);
return(null);
}
else if (prereqFeatureFlag.On)
{
prereqEvalResult = prereqFeatureFlag.Evaluate(user, featureStore, events, config);
try
{
JToken variation = prereqFeatureFlag.GetVariation(prereq.Variation);
if (prereqEvalResult == null || variation == null || !prereqEvalResult.Equals(variation))
{
prereqOk = false;
}
}
catch (EvaluationException e)
{
Log.WarnFormat("Error evaluating prerequisites: {0}",
e,
Util.ExceptionMessage(e));
prereqOk = false;
}
}
else
{
prereqOk = false;
}
//We don't short circuit and also send events for each prereq.
events.Add(new FeatureRequestEvent(prereqFeatureFlag.Key, EventUser.FromUser(user, config),
prereqEvalResult, null, prereqFeatureFlag.Version, prereq.Key));
}
}
if (prereqOk)
{
return(GetVariation(EvaluateIndex(user, featureStore)));
}
return(null);
}
private void sendFlagRequestEvent(string key, User user, JToken value, JToken defaultValue, JToken version)
{
_eventStore.Add(new FeatureRequestEvent(key, EventUser.FromUser(user, _configuration), value, defaultValue, version, null));
}
