/// <summary>
/// Get the specified service
/// </summary>
public object GetService(Type serviceType)
{
ServiceInstanceInformation candidateService = null;
if (this.m_cachedServices?.TryGetValue(serviceType, out candidateService) == false && !this.m_notConfiguredServices.Contains(serviceType))
{
lock (this.m_lock)
{
candidateService = this.m_serviceRegistrations.FirstOrDefault(s => s.ImplementedServices.Contains(serviceType) || serviceType.IsAssignableFrom(s.ServiceImplementer));
if (candidateService == null) // Attempt a load from configuration
{
var cServiceType = this.m_configuration.ServiceProviders.FirstOrDefault(s => s.Type != null && serviceType.IsAssignableFrom(s.Type));
if (cServiceType != null)
{
candidateService = new ServiceInstanceInformation(cServiceType.Type, this);
this.m_serviceRegistrations.Add(candidateService);
}
else // Attempt to call the service factories to create it
{
var created = false;
foreach (var factory in this.m_serviceFactories)
{
// Is the service factory already created?
created |= factory.TryCreateService(serviceType, out object serviceInstance);
if (created)
{
candidateService = new ServiceInstanceInformation(serviceInstance, this);
this.m_cachedServices.TryAdd(serviceType, candidateService);
break;
}
}
if (!created)
{
this.m_notConfiguredServices.Add(serviceType);
}
}
}
if (candidateService != null)
{
this.m_cachedServices.TryAdd(serviceType, candidateService);
}
}
}
return(candidateService?.GetInstance());
}
/// <summary>
/// Adds a service provider
/// </summary>
public void AddServiceProvider(Type serviceType)
{
lock (this.m_lock)
{
if (this.m_serviceRegistrations.Any(s => s.ServiceImplementer == serviceType))
{
this.m_tracer.TraceWarning("Service {0} has already been registered...", serviceType);
}
else
{
this.ValidateServiceSignature(serviceType);
var sii = new ServiceInstanceInformation(serviceType, this);
this.m_serviceRegistrations.Add(sii);
if (typeof(IServiceFactory).IsAssignableFrom(serviceType))
{
this.AddServiceFactory(sii.GetInstance() as IServiceFactory);
}
}
this.m_notConfiguredServices.Clear();
}
}
