internal static void ApplyConfiguration(this Feature feature, IFeatureSettings featureSettings)
{
if (featureSettings.Configuration is BaseFeatureConfiguration baseFeatureConfiguration)
{
baseFeatureConfiguration?.Apply(featureSettings, feature);
}
}
internal override void Apply(IFeatureSettings featureSettings, Feature feature)
{
if (featureSettings is IFeatureWithValueSettings <bool> fBool)
{
if (featureSettings.Configuration is ITimeWindowFeatureConfiguration <bool> gfcBool)
{
feature.ConfigurationType = ConfigurationTypes.TimeWindow;
feature.TimeWindowFeatures = gfcBool.TimeWindows
.Select(g => new DatabaseTimeWindowFeature
{
StartDate = g.StartDate,
EndDate = g.EndDate,
BooleanValue = g.Value
})
.Concat(new[] { new DatabaseTimeWindowFeature {
StartDate = null, EndDate = null, BooleanValue = fBool.Value
} })
.ToList();
}
}
if (featureSettings is IFeatureWithValueSettings <int> fInt)
{
if (featureSettings.Configuration is ITimeWindowFeatureConfiguration <int> gfcInt)
{
feature.ConfigurationType = ConfigurationTypes.TimeWindow;
feature.TimeWindowFeatures = gfcInt.TimeWindows
.Select(g => new DatabaseTimeWindowFeature
{
StartDate = g.StartDate,
EndDate = g.EndDate,
IntValue = g.Value
})
.Concat(new[] { new DatabaseTimeWindowFeature {
StartDate = null, EndDate = null, IntValue = fInt.Value
} })
.ToList();
}
}
if (featureSettings is IFeatureWithValueSettings <decimal> fDecimal)
{
if (featureSettings.Configuration is ITimeWindowFeatureConfiguration <decimal> gfcDecimal)
{
feature.ConfigurationType = ConfigurationTypes.TimeWindow;
feature.TimeWindowFeatures = gfcDecimal.TimeWindows
.Select(g => new DatabaseTimeWindowFeature
{
StartDate = g.StartDate,
EndDate = g.EndDate,
DecimalValue = g.Value
})
.Concat(new[] { new DatabaseTimeWindowFeature {
StartDate = null, EndDate = null, DecimalValue = fDecimal.Value
} })
.ToList();
}
}
if (featureSettings is IFeatureWithValueSettings <string> fString)
{
if (featureSettings.Configuration is ITimeWindowFeatureConfiguration <string> gfcString)
{
feature.ConfigurationType = ConfigurationTypes.TimeWindow;
feature.TimeWindowFeatures = gfcString.TimeWindows
.Select(g => new DatabaseTimeWindowFeature
{
StartDate = g.StartDate,
EndDate = g.EndDate,
StringValue = g.Value
})
.Concat(new[] { new DatabaseTimeWindowFeature {
StartDate = null, EndDate = null, StringValue = fString.Value
} })
.ToList();
}
}
}
internal override void Apply(IFeatureSettings featureSettings, Feature feature)
{
if (featureSettings is IFeatureWithValueSettings <bool> fBool)
{
if (featureSettings.Configuration is IGroupFeatureConfiguration <bool> gfcBool)
{
feature.ConfigurationType = ConfigurationTypes.Group;
feature.GroupFeatures = gfcBool.Groups
.Select(g => new DatabaseGroupFeature
{
Group = g.Group,
BooleanValue = g.Value
})
.Concat(new[] { new DatabaseGroupFeature {
Group = null, BooleanValue = fBool.Value
} })
.ToList();
}
}
if (featureSettings is IFeatureWithValueSettings <int> fInt)
{
if (featureSettings.Configuration is IGroupFeatureConfiguration <int> gfcInt)
{
feature.ConfigurationType = ConfigurationTypes.Group;
feature.GroupFeatures = gfcInt.Groups
.Select(g => new DatabaseGroupFeature
{
Group = g.Group,
IntValue = g.Value
})
.Concat(new[] { new DatabaseGroupFeature {
Group = null, IntValue = fInt.Value
} })
.ToList();
}
}
if (featureSettings is IFeatureWithValueSettings <decimal> fDecimal)
{
if (featureSettings.Configuration is IGroupFeatureConfiguration <decimal> gfcDecimal)
{
feature.ConfigurationType = ConfigurationTypes.Group;
feature.GroupFeatures = gfcDecimal.Groups
.Select(g => new DatabaseGroupFeature
{
Group = g.Group,
DecimalValue = g.Value
})
.Concat(new[] { new DatabaseGroupFeature {
Group = null, DecimalValue = fDecimal.Value
} })
.ToList();
}
}
if (featureSettings is IFeatureWithValueSettings <string> fString)
{
if (featureSettings.Configuration is IGroupFeatureConfiguration <string> gfcString)
{
feature.ConfigurationType = ConfigurationTypes.Group;
feature.GroupFeatures = gfcString.Groups
.Select(g => new DatabaseGroupFeature
{
Group = g.Group,
StringValue = g.Value
})
.Concat(new[] { new DatabaseGroupFeature {
Group = null, StringValue = fString.Value
} })
.ToList();
}
}
}
private async Task <bool> IsEnabledAsync <TContext>(string feature, TContext appContext, bool useAppContext)
{
foreach (ISessionManager sessionManager in _sessionManagers)
{
if (await sessionManager.TryGetAsync(feature, out bool cachedEnabled).ConfigureAwait(false))
{
return(cachedEnabled);
}
}
bool enabled = false;
IFeatureSettings settings = _settingsProvider.TryGetFeatureSettings(feature);
if (settings != null)
{
//
// Check if feature is always on
// If it is, result is true, goto: cache
if (settings.EnabledFor.Any(featureFilter => string.Equals(featureFilter.Name, "AlwaysOn", StringComparison.OrdinalIgnoreCase)))
{
enabled = true;
}
else
{
//
// For all enabling filters listed in the feature's state calculate if they return true
// If any executed filters return true, return true
foreach (IFeatureFilterSettings featureFilterSettings in settings.EnabledFor)
{
IFeatureFilterMetadata filter = GetFeatureFilterMetadata(featureFilterSettings.Name);
if (filter == null)
{
_logger.LogWarning($"Feature filter '{featureFilterSettings.Name}' specified for feature '{feature}' was not found.");
continue;
}
var context = new FeatureFilterEvaluationContext()
{
FeatureName = feature,
Parameters = featureFilterSettings.Parameters
};
//
// IContextualFeatureFilter
if (useAppContext)
{
ContextualFeatureFilterEvaluator contextualFilter = GetContextualFeatureFilter(featureFilterSettings.Name, typeof(TContext));
if (contextualFilter != null && await contextualFilter.EvaluateAsync(context, appContext).ConfigureAwait(false))
{
enabled = true;
break;
}
}
//
// IFeatureFilter
if (filter is IFeatureFilter featureFilter && await featureFilter.EvaluateAsync(context).ConfigureAwait(false))
{
enabled = true;
break;
}
}
}
}
foreach (ISessionManager sessionManager in _sessionManagers)
{
await sessionManager.SetAsync(feature, enabled).ConfigureAwait(false);
}
return(enabled);
}
public bool IsEnabled(string feature)
{
foreach (ISessionManager sessionManager in _sessionManagers)
{
if (sessionManager.TryGet(feature, out bool cachedEnabled))
{
return(cachedEnabled);
}
}
bool enabled = false;
IFeatureSettings settings = _settingsProvider.TryGetFeatureSettings(feature);
if (settings != null)
{
//
// Check if feature is always on
// If it is, result is true, goto: cache
if (settings.EnabledFor.Any(featureFilter => string.Equals(featureFilter.Name, "AlwaysOn", StringComparison.OrdinalIgnoreCase)))
{
enabled = true;
}
else
{
//
// For all enabling filters listed in the feature's state calculate if they return true
// If any executed filters return true, return true
foreach (IFeatureFilterSettings featureFilterSettings in settings.EnabledFor)
{
IFeatureFilter filter = GetFeatureFilter(featureFilterSettings.Name);
if (filter == null)
{
_logger.LogWarning($"Feature filter '{featureFilterSettings.Name}' specified for feature '{feature}' was not found.");
continue;
}
var context = new FeatureFilterEvaluationContext()
{
FeatureName = feature,
Parameters = featureFilterSettings.Parameters
};
if (filter.Evaluate(context))
{
enabled = true;
break;
}
}
}
}
foreach (ISessionManager sessionManager in _sessionManagers)
{
sessionManager.Set(feature, enabled);
}
return(enabled);
}
internal abstract void Apply(IFeatureSettings featureSettings, Feature feature);
