public PipelineEnvironment(PipelineConfiguration configuration, IServiceProvider serviceProvider = null)
{
if (configuration is null)
{
throw new ArgumentNullException(nameof(configuration));
}
Debug.WriteLineIf(serviceProvider is null, "no IServiceProvider is provided to the pipeline environment");
Pipeline = PsiPipeline.Create(configuration.Name, configuration.DeliveryPolicy);
var instEnvs = new List <ComponentEnvironment>();
Instances = instEnvs;
var pending = new List <ComponentConfiguration>(configuration.Instances);
while (true)
{
//find one with all dependencies ready
var compConfig = pending.Where(c => ReadyToInstantiate(c, instEnvs)).FirstOrDefault();
if (compConfig is null) //if not found
{
if (pending.Count > 0)
{
throw new Exception($"{pending.Count} components cannot be instantiated because their data flow dependencies are not fulfilled.");
}
break;
}
pending.Remove(compConfig);
var instance = compConfig.Instantiate(Pipeline, instEnvs, serviceProvider);
var env = new ComponentEnvironment(compConfig, instance);
instEnvs.Add(env);
}
}
public void Notify(object sender, ComponentEnvironment env)
{
Console.WriteLine($"Sender is {sender.GetType()}");
if (env == ComponentEnvironment.Comp1_MethodA)
{
Console.WriteLine("Mediator triggers operations:");
_component2.MethodC();
}
if (env == ComponentEnvironment.Comp2_MethodD)
{
Console.WriteLine("Mediator triggers operations:");
_component1.MethodB();
_component2.MethodC();
}
}