public async Task HandleAsync(IInvocationStart request, IAppConnection sourceConnection, ITransportChannel sourceChannel)
{
IAppConnection targetConnection = null;
ITransportChannel targetChannel = null;
InvocationDescriptor callDescriptor = null;
var startMs = _stopwatch.ElapsedMilliseconds;
try
{
Log.Info("Handling invocation {0} from {{{1}}}: {{{2}}}", sourceChannel.Id, sourceConnection, request);
targetConnection = await request.Target.Handle(_resolveTargetConnectionHandler, sourceConnection).ConfigureAwait(false);
targetChannel = await targetConnection.CreateChannelAsync().ConfigureAwait(false);
Log.Debug("Created channel {0} for invocation {1} from {{{2}}} to {{{3}}}: {{{4}}}", targetChannel.Id, sourceChannel.Id, sourceConnection, targetConnection, request);
using (var invocationStarting = _protocolMessageFactory.CreateInvocationStarting())
{
var serialized = _protocolSerializer.Serialize(invocationStarting);
try
{
await sourceChannel.Out.WriteAsync(new TransportMessageFrame(serialized)).ConfigureAwait(false);
Log.Trace("Sent starting event for invocation {0}", sourceChannel.Id);
}
catch
{
serialized.Dispose();
throw;
}
}
using (var invocationRequested = request.Target.Handle(_createRequestHandler, sourceConnection))
{
startMs = _stopwatch.ElapsedMilliseconds;
callDescriptor = new InvocationDescriptor(
sourceConnection.Info,
targetConnection.Info,
invocationRequested.ServiceId,
invocationRequested.ServiceAlias.GetValueOrDefault(),
invocationRequested.MethodId);
_appLifecycleManager.OnInvocationStarted(new InvocationStartedEventDescriptor(callDescriptor));
var serialized = _protocolSerializer.Serialize(invocationRequested);
try
{
await targetChannel.Out.WriteAsync(new TransportMessageFrame(serialized)).ConfigureAwait(false);
Log.Trace("Sent requested event for invocation {0} to {1}", targetChannel.Id, targetConnection);
}
catch
{
serialized.Dispose();
throw;
}
}
var propagateTask1 = TaskRunner.RunInBackground(() => PropagateAsync(sourceChannel.In, targetChannel.Out));
var propagateTask2 = TaskRunner.RunInBackground(() => PropagateAsync(targetChannel.In, sourceChannel.Out));
await Task.WhenAll(propagateTask1, propagateTask2).ConfigureAwait(false);
}
catch (Exception ex)
{
sourceChannel.Out.TryTerminate(ex);
targetChannel?.Out.TryTerminate(ex);
throw;
}
finally
{
try
{
await Task
.WhenAll(
targetChannel?.In.ConsumeAsync((Action <TransportMessageFrame>)DisposeFrame).IgnoreExceptions() ?? TaskConstants.Completed,
sourceChannel.In.ConsumeAsync((Action <TransportMessageFrame>)DisposeFrame).IgnoreExceptions(),
targetChannel?.Completion ?? TaskConstants.Completed,
sourceChannel.Completion)
.ConfigureAwait(false);
Log.Info("Completed invocation {0} from {{{1}}} to {{{2}}}: {{{3}}}", sourceChannel.Id, sourceConnection, targetConnection, request);
OnActionFinished(callDescriptor, InvocationResult.Succeeded, startMs);
}
catch (OperationCanceledException)
{
Log.Info("Canceled invocation {0} from {{{1}}} to {{{2}}}: {{{3}}}", sourceChannel.Id, sourceConnection, targetConnection, request);
OnActionFinished(callDescriptor, InvocationResult.Canceled, startMs);
throw;
}
catch (Exception ex)
{
Log.Warn("Failed invocation {0} from {{{1}}} to {{{2}}}: {{{3}}}. Error: {4}", sourceChannel.Id, sourceConnection, targetConnection, request, ex.FormatTypeAndMessage());
OnActionFinished(callDescriptor, InvocationResult.Failed, startMs);
throw;
}
}
}
public async Task HandleAsync(IInvocationStart request, IAppConnection sourceConnection, ITransportChannel sourceChannel)
{
IAppConnection targetConnection = null;
ITransportChannel targetChannel = null;
try
{
Log.Info("Handling invocation {0} from {{{1}}}: {{{2}}}", sourceChannel.Id, sourceConnection, request);
targetConnection = await request.Target.Handle(_resolveTargetConnectionHandler, sourceConnection).ConfigureAwait(false);
targetChannel = await targetConnection.CreateChannelAsync().ConfigureAwait(false);
Log.Debug("Created channel {0} for invocation {1} from {{{2}}} to {{{3}}}: {{{4}}}", targetChannel.Id, sourceChannel.Id, sourceConnection, targetConnection, request);
using (var invocationStarting = _protocolMessageFactory.CreateInvocationStarting())
{
var serialized = _protocolSerializer.Serialize(invocationStarting);
try
{
await sourceChannel.Out.WriteAsync(new TransportMessageFrame(serialized)).ConfigureAwait(false);
Log.Trace("Sent starting event for invocation {0}", sourceChannel.Id);
}
catch
{
serialized.Dispose();
throw;
}
}
using (var invocationRequested = request.Target.Handle(_createRequestHandler, sourceConnection))
{
var serialized = _protocolSerializer.Serialize(invocationRequested);
try
{
await targetChannel.Out.WriteAsync(new TransportMessageFrame(serialized)).ConfigureAwait(false);
Log.Trace("Sent requested event for invocation {0} to {1}", targetChannel.Id, targetConnection);
}
catch
{
serialized.Dispose();
throw;
}
}
var propagateTask1 = TaskRunner.RunInBackground(() => PropagateAsync(sourceChannel.In, targetChannel.Out));
var propagateTask2 = TaskRunner.RunInBackground(() => PropagateAsync(targetChannel.In, sourceChannel.Out));
await Task.WhenAll(propagateTask1, propagateTask2).ConfigureAwait(false);
}
catch (Exception ex)
{
sourceChannel.Out.TryTerminate(ex);
targetChannel?.Out.TryTerminate(ex);
throw;
}
finally
{
try
{
await Task
.WhenAll(
targetChannel?.In.ConsumeAsync((Action <TransportMessageFrame>)DisposeFrame).IgnoreExceptions() ?? TaskConstants.Completed,
sourceChannel.In.ConsumeAsync((Action <TransportMessageFrame>)DisposeFrame).IgnoreExceptions(),
targetChannel?.Completion ?? TaskConstants.Completed,
sourceChannel.Completion)
.ConfigureAwait(false);
Log.Info("Completed invocation {0} from {{{1}}} to {{{2}}}: {{{3}}}", sourceChannel.Id, sourceConnection, targetConnection, request);
}
catch (OperationCanceledException)
{
Log.Info("Canceled invocation {0} from {{{1}}} to {{{2}}}: {{{3}}}", sourceChannel.Id, sourceConnection, targetConnection, request);
throw;
}
catch (Exception ex)
{
Log.Warn("Failed invocation {0} from {{{1}}} to {{{2}}}: {{{3}}}. Error: {4}", sourceChannel.Id, sourceConnection, targetConnection, request, ex.FormatTypeAndMessage());
throw;
}
}
}