/// <summary>
/// Checks whether the given bootstrap service type is available in container
/// and throws an exception otherwise.
/// </summary>
/// <typeparam name="T">Type of bootstrap service to check.</typeparam>
void CheckBootstrapService <T>() where T : class
{
var bootstrapService = BootstrapServices.Get <T>();
if (bootstrapService == null)
{
throw new InvalidOperationException("No " + typeof(T).Name + " implementation available.");
}
}
/// <summary>
/// Initializes all components and service information.
/// </summary>
public void Load()
{
if (_isLoaded)
{
// Already loaded
// TODO Throw an exception?
return;
}
// Ensure we have implementations for all essential bootstrap services
CheckBootstrapService <ILogger>();
CheckBootstrapService <IComponentAssemblyProvider>();
CheckBootstrapService <IRegistration>();
CheckBootstrapService <IMetaInfoContainer>();
var logger = BootstrapServices.GetLogger();
// Get and/or load assemblies that we want to use
var assemblies = BootstrapServices.GetComponentAssemblyProvider().GetAssemblies();
// Collect metadata
var registration = BootstrapServices.GetRegistration();
registration.LoadComponentData(assemblies);
var metaInfoContainer = BootstrapServices.GetMetaInfoContainer();
metaInfoContainer.ComponentInfos = registration.ComponentInfos;
metaInfoContainer.ServiceInfos = registration.ServiceInfos;
metaInfoContainer.Substitutions = registration.Substitutions;
metaInfoContainer.ServiceLists = registration.ServiceLists;
// Initialize all lifecycles
foreach (var serviceInfoMapping in metaInfoContainer.ServiceInfos)
{
serviceInfoMapping.Value.Lifecycle.Prepare(
new InitializationData(this, serviceInfoMapping.Value),
logger);
serviceInfoMapping.Value.Lifecycle.InitialActivation();
}
_isLoaded = true;
}
