private void EnsureLevel(ServiceConfigurationLevel level)
{
if (this.ConfigurationLevel != level)
{
throw new InvalidOperationException("Cannot modify this property");
}
}
/// <summary>
///
/// </summary>
/// <param name="level">Indicates the configuration level (template, profile, or instance) to find.</param>
/// <param name="search">Indicates whether the lowest ancestor or the highest ancestor should be found of the given type. (Highest not yet implemented).</param>
/// <returns></returns>
public ServiceConfiguration GetBaseConfiguration(ServiceConfigurationLevel level, ServiceConfigurationLevelSearch search = ServiceConfigurationLevelSearch.Lowest)
{
// TODO: implement ByLevel with search = Highest
if (search == ServiceConfigurationLevelSearch.Highest)
{
throw new NotSupportedException("Only the lowest level can be found at the moment.");
}
ServiceConfiguration target = null;
switch (level)
{
case ServiceConfigurationLevel.Instance:
target = this.ConfigurationLevel == ServiceConfigurationLevel.Instance ? this : null;
break;
case ServiceConfigurationLevel.Profile:
if (this.ConfigurationLevel == ServiceConfigurationLevel.Profile)
{
target = this;
}
else if (this.ConfigurationLevel == ServiceConfigurationLevel.Instance)
{
target = this.BaseConfiguration;
}
else
{
target = null;
}
break;
case ServiceConfigurationLevel.Template:
target = this;
while (target.ConfigurationLevel != ServiceConfigurationLevel.Template && target.BaseConfiguration != null)
{
target = target.BaseConfiguration;
}
break;
}
return(target);
}
internal ServiceConfiguration Derive(ServiceConfigurationLevel newLevel, object parent)
{
if (this.ConfigurationLevel == ServiceConfigurationLevel.Instance)
{
throw new ServiceConfigurationException("Cannot derive from an instance configuration.");
}
ServiceConfiguration config;
try { config = (ServiceConfiguration)Activator.CreateInstance(this.GetType()); }
catch (MissingMethodException) { throw new MissingMethodException("Sub-types of ServiceConfiguration require a parameterless constructor."); }
// Inherit from parent
config.BaseConfiguration = this;
config._isEnabled = true;
config._isPublic = this._isPublic;
config._assemblyPath = this._assemblyPath;
config._serviceType = this._serviceType;
config._serviceName = this._serviceName;
config._hostName = this._hostName;
this.Limits.CopyTo(config.Limits);
CopyConfigurationData(this, config);
// Merge parameters
foreach (var param in this.Parameters)
{
config.Parameters[param.Key] = param.Value;
}
// Associate with profile
ServiceProfile profile = parent as ServiceProfile;
if (this.Profile != null)
{
if (profile == null)
{
profile = this.Profile;
}
else if (profile != this.Profile)
{
// This should never happen because it is checked by ServiceProfile.DeriveConfiguration()
throw new ServiceConfigurationException("Profile mismatch - internal Derive should not be called this way");
}
}
if (profile != null)
{
config.Profile = profile;
config.ConfigurationLevel = ServiceConfigurationLevel.Profile;
// Deriving from a new profile, so merge parameters (if this.Profile is not null, parameters were already merged in a previous Derive())
if (this.Profile == null)
{
foreach (var param in profile.Parameters)
{
config.Parameters[param.Key] = param.Value;
}
}
}
else
{
config.ConfigurationLevel = newLevel;
}
// Get scheduling rules only if this one is empty
foreach (SchedulingRule rule in this.SchedulingRules)
{
config.SchedulingRules.Add(rule.Clone());
}
// Parameter inheritance from parent service configuration
ServiceConfiguration parentInstanceConfig = parent as ServiceConfiguration;
if (parentInstanceConfig != null)
{
// Ignore parameters that are already in the config
foreach (var param in parentInstanceConfig.Parameters)
{
if (!config.Parameters.ContainsKey(param.Key))
{
config.Parameters[param.Key] = param.Value;
}
}
}
return(config);
}
