/// <summary>
/// Translates the ResourceImpactEnum for a single resource type into ImpactCategory,
/// based on configuration or DefaultResourceImpactMap.
/// </summary>
private ImpactCategory TranslateResourceImpactToCategory(
string resourceType,
ResourceImpactEnum impact)
{
// Look up the default category in the map
ImpactCategory defaultCategory;
if (!DefaultResourceImpactMap.TryGetValue(GetDefaultResourceImpactMapKey(resourceType, impact), out defaultCategory))
{
// The default map is expected to contain a mapping for Unknown; fall back to that
defaultCategory = DefaultResourceImpactMap[GetDefaultResourceImpactMapKey(resourceType, ResourceImpactEnum.Unknown)];
}
string configKey = String.Format(CultureInfo.InvariantCulture, ConfigKeyFormatResourceImpactMap, resourceType, impact);
return(this.configSection.ReadConfigValue(configKey, defaultCategory));
}
/// <summary>
/// Escalates the impact category based on the impact to a particular resource type.
/// </summary>
/// <param name="oldCategory">The current impact category.</param>
/// <param name="resourceType">The resource type name.</param>
/// <param name="impact">The impact to the given resource.</param>
/// <returns>The new impact category.</returns>
private ImpactCategory ApplyResourceImpact(
ImpactCategory oldCategory,
string resourceType,
ResourceImpactEnum impact)
{
ImpactCategory newCategory = TranslateResourceImpactToCategory(resourceType, impact);
newCategory = EscalateImpactCategory(oldCategory, newCategory);
if (oldCategory != newCategory)
{
Tracer.WriteNoise(
"Overall impact changed from {0} to {1} due to resource impact {2}={3}",
oldCategory,
newCategory,
resourceType,
impact);
}
return(newCategory);
}
/// <summary>
/// Gets the key used for lookups in DefaultResourceImpactMap.
/// </summary>
private static string GetDefaultResourceImpactMapKey(string resourceType, ResourceImpactEnum impact)
{
return(string.Format(CultureInfo.InvariantCulture, "{0}.{1}", resourceType, impact));
}
