public Endpoint(Lifetime bindLifetime, RdCall <TReq, TRes> call, RdId rdId, IScheduler wireScheduler) : base(call, rdId, wireScheduler)
{
myDef = bindLifetime.CreateNested();
myCall.Wire.Advise(Lifetime, this);
Lifetime.TryOnTermination(() => ResultInternal.SetIfEmpty(RdTaskResult <TRes> .Cancelled()));
Result.AdviseOnce(Lifetime.Eternal, taskResult =>
{
var potentiallyBindable = taskResult.Result;
if (potentiallyBindable.IsBindable())
{
potentiallyBindable.IdentifyPolymorphic(myCall.Proto.Identities, myCall.RdId.Mix(RdId.ToString()));
potentiallyBindable.BindPolymorphic(Lifetime, myCall, RdId.ToString());
}
else
{
myDef.Terminate();
}
Trace(RdReactiveBase.ourLogSend, "send response", taskResult);
myWire.Send(RdId,
writer =>
{
RdTaskResult <TRes> .Write(myCall.WriteResponseDelegate, myCall.SerializationContext, writer, taskResult);
});
});
}
//received response from wire
public void OnWireReceived(UnsafeReader reader)
{
var resultFromWire = RdTaskResult <TRes> .Read(myCall.ReadResponseDelegate, myCall.SerializationContext, reader);
if (RdReactiveBase.LogReceived.IsTraceEnabled())
{
RdReactiveBase.LogReceived.Trace($"call {myCall.Location} ({myCall.RdId}) received response for task '{RdId}' : {resultFromWire.PrintToString()}");
}
Scheduler.Queue(() =>
{
using (myCall.UsingDebugInfo())
{
if (ResultInternal.SetIfEmpty(resultFromWire))
{
return;
}
}
//trace
if (RdReactiveBase.LogReceived.IsTraceEnabled())
{
RdReactiveBase.LogReceived.Trace($"call {myCall.Location} ({myCall.RdId}) response for task '{RdId}' was dropped, because task already has result: {Result.Value}");
}
myLifetimeDef.Terminate(); //todo not true in case of bindable entities
});
}
private static RdTask <T> FromResult(RdTaskResult <T> result)
{
var res = new RdTask <T>();
res.ResultInternal.Value = result;
return(res);
}
public override void OnWireReceived(UnsafeReader reader)
{
using (myCall.UsingDebugInfo())
{
//we are on endpoint side, so listening for cancellation
Trace(RdReactiveBase.ourLogReceived, "received cancellation");
reader.ReadVoid(); //nothing just a void value
ResultInternal.SetIfEmpty(RdTaskResult <TRes> .Cancelled());
myDef.Terminate();
}
}
internal Lifetime Subscribe(Lifetime outerLifetime)
{
var taskWireSubscriptionDefinition = outerLifetime.CreateNested();
var externalCancellation = outerLifetime.CreateNested();
myCall.Wire.Advise(taskWireSubscriptionDefinition.Lifetime, this); //this lifetimeDef listen only one value
taskWireSubscriptionDefinition.Lifetime.TryOnTermination(() => ResultInternal.SetIfEmpty(RdTaskResult <TRes> .Cancelled()));
Result.AdviseOnce(Lifetime.Eternal, taskResult =>
{
try
{
var potentiallyBindable = taskResult.Result;
if (potentiallyBindable.IsBindable())
{
if (myIsEndpoint)
{
potentiallyBindable.IdentifyPolymorphic(myCall.Proto.Identities, myCall.RdId.Mix(RdId.ToString()));
}
potentiallyBindable.BindPolymorphic(externalCancellation.Lifetime, myCall, RdId.ToString());
}
else
{
externalCancellation.Terminate();
}
if (myIsEndpoint)
{
Trace(RdReactiveBase.ourLogSend, "send response", taskResult);
myWire.Send(RdId,
writer =>
{
RdTaskResult <TRes> .Write(myCall.WriteResponseDelegate, myCall.SerializationContext, writer, taskResult);
});
}
else if (taskResult.Status == RdTaskStatus.Canceled) //we need to transfer cancellation to the other side
{
Trace(RdReactiveBase.ourLogSend, "send cancellation");
myWire.Send(RdId, writer => { writer.Write(Unit.Instance); }); //send cancellation to the other side
}
}
finally
{
taskWireSubscriptionDefinition.Terminate(); //no need to listen result or cancellation from wire
}
});
return(externalCancellation.Lifetime);
}
public override void OnWireReceived(UnsafeReader reader)
{
using (myCall.UsingDebugInfo())
{
// we are at call side, so listening no response and bind it if it's bindable
var resultFromWire = RdTaskResult <TRes> .Read(myCall.ReadResponseDelegate, myCall.SerializationContext, reader);
Trace(RdReactiveBase.ourLogReceived, "received response", resultFromWire);
if (!ResultInternal.SetIfEmpty(resultFromWire))
{
Trace(RdReactiveBase.ourLogReceived, "response from wire was rejected because task already has result");
}
}
}
public WiredRdTask(LifetimeDefinition lifetimeDef, RdCall <TReq, TRes> call, RdId rdId, IScheduler scheduler)
{
myLifetimeDef = lifetimeDef;
myCall = call;
RdId = rdId;
Scheduler = scheduler;
myWire = call.Wire;
call.Wire.Advise(lifetimeDef.Lifetime, this);
lifetimeDef.Lifetime.TryOnTermination(() =>
{
//otherwise it could be successful continuation from Queue
if (ResultInternal.SetIfEmpty(RdTaskResult <TRes> .Cancelled()))
{
RdReactiveBase.LogSend.Trace($"call {myCall.Location} ({myCall.RdId}) send cancellation for task '{RdId}'");
myWire.Send(rdId, writer => { writer.Write(Unit.Instance); }); //send cancellation to the other side
}
});
}
//received response from wire
public void OnWireReceived(UnsafeReader reader)
{
using (myCall.UsingDebugInfo())
{
if (myIsEndpoint) //we are on endpoint side, so listening for cancellation
{
Trace(RdReactiveBase.ourLogReceived, "received cancellation");
reader.ReadVoid(); //nothing just a void value
ResultInternal.SetIfEmpty(RdTaskResult <TRes> .Cancelled());
}
else // we are at call side, so listening no response and bind it if it's bindable
{
var resultFromWire = RdTaskResult <TRes> .Read(myCall.ReadResponseDelegate, myCall.SerializationContext, reader);
Trace(RdReactiveBase.ourLogReceived, "received response", resultFromWire);
if (!ResultInternal.SetIfEmpty(resultFromWire))
{
Trace(RdReactiveBase.ourLogReceived, "response from wire was rejected because task already has result");
}
}
}
}
public static RdTask <T> Cancelled()
{
return(FromResult(RdTaskResult <T> .Cancelled()));
}
public void Set(T value) => ResultInternal.Value = RdTaskResult <T> .Success(value);
public override void OnWireReceived(UnsafeReader reader)
{
var taskId = RdId.Read(reader);
var value = ReadRequestDelegate(SerializationContext, reader);
if (LogReceived.IsTraceEnabled())
{
LogReceived.Trace("endpoint `{0}`::({1}), taskId={2}, request = {3}", Location, RdId, taskId, value.PrintToString());
}
var taskLifetimeDef = myBindLifetime.CreateNested();
//subscribe for lifetime cancellation
new WiredLifetime(taskLifetimeDef, taskId, this, Wire);
RdTask <TRes> rdTask;
using (UsingDebugInfo()) //now supports only sync handlers
{
try
{
rdTask = Handler(taskLifetimeDef.Lifetime, value);
}
catch (Exception e)
{
rdTask = RdTask <TRes> .Faulted(e);
}
}
rdTask.Result.Advise(taskLifetimeDef.Lifetime, result =>
{
if (LogSend.IsTraceEnabled())
{
LogSend.Trace("endpoint `{0}`::({1}), taskId={2}, response = {3}", Location, RdId, taskId, result.PrintToString());
}
RdTaskResult <TRes> validatedResult;
try
{
if (result.Status == RdTaskStatus.Success)
{
AssertNullability(result.Result);
}
validatedResult = result;
}
catch (Exception e)
{
LogSend.Error(e);
validatedResult = RdTaskResult <TRes> .Faulted(e);
}
Wire.Send(taskId, writer =>
{
RdTaskResult <TRes> .Write(WriteResponseDelegate, SerializationContext, writer, validatedResult);
});
taskLifetimeDef.Terminate(); //need to terminate to unsubscribe lifetime listener - not for bindable entries
});
}
public static void Write(CtxWriteDelegate <T> writeDelegate, SerializationCtx ctx, UnsafeWriter writer, RdTaskResult <T> value)
{
writer.Write((int)value.Status);
switch (value.Status)
{
case RdTaskStatus.Success:
writeDelegate(ctx, writer, value.Result);
break;
case RdTaskStatus.Canceled:
break;
case RdTaskStatus.Faulted:
RdFault.Write(ctx, writer, value.Error);
break;
default:
throw new ArgumentOutOfRangeException();
}
}
public void SetCancelled() => ResultInternal.Value = RdTaskResult <T> .Cancelled();
public void Set(Exception e) => ResultInternal.Value = RdTaskResult <T> .Faulted(e);
public static RdTask <T> Faulted(Exception exception) => FromResult(RdTaskResult <T> .Faulted(exception));
public static RdTask <T> Successful(T result) => FromResult(RdTaskResult <T> .Success(result));
public static RdTask <T> Faulted(Exception exception)
{
return(FromResult(RdTaskResult <T> .Faulted(exception)));
}
public void Set(Exception e) => ResultInternal.SetIfEmpty(RdTaskResult <T> .Faulted(e));
public void SetCancelled() => ResultInternal.SetIfEmpty(RdTaskResult <T> .Cancelled());
public void Set(T value) => ResultInternal.SetIfEmpty(RdTaskResult <T> .Success(value));
public CallSite(Lifetime outerLifetime, RdCall <TReq, TRes> call, RdId rdId, IScheduler wireScheduler) : base(call, rdId, wireScheduler)
{
var taskWireSubscriptionDefinition = outerLifetime.CreateNested();
myCall.Wire.Advise(taskWireSubscriptionDefinition.Lifetime, this); //this lifetimeDef listen only one value
taskWireSubscriptionDefinition.Lifetime.TryOnTermination(() => ResultInternal.SetIfEmpty(RdTaskResult <TRes> .Cancelled()));
Result.AdviseOnce(Lifetime.Eternal, taskResult =>
{
taskWireSubscriptionDefinition.Terminate(); //no need to listen result or cancellation from wire
var potentiallyBindable = taskResult.Result;
if (potentiallyBindable.IsBindable())
{
potentiallyBindable.BindPolymorphic(outerLifetime, myCall, RdId.ToString());
if (!outerLifetime.TryOnTermination(SendCancellation))
{
SendCancellation();
}
}
else if (taskResult.Status == RdTaskStatus.Canceled) //we need to transfer cancellation to the other side
{
SendCancellation();
}
});
}
public static RdTask <T> Successful(T result)
{
return(FromResult(RdTaskResult <T> .Success(result)));
}