private static IRarController GetController(string pipeName, Handshake handshake)
{
Type rarControllerType = Type.GetType(RarControllerName);
Func <string, int?, int?, int, bool, NamedPipeServerStream> streamFactory = NamedPipeUtil.CreateNamedPipeServer;
Func <Handshake, NamedPipeServerStream, int, bool> validateCallback = NamedPipeUtil.ValidateHandshake;
IRarController controller = Activator.CreateInstance(rarControllerType, pipeName, handshake, streamFactory, validateCallback, null) as IRarController;
ErrorUtilities.VerifyThrow(controller != null, ResourceUtilities.GetResourceString("RarControllerReflectionError"), RarControllerName);
return(controller);
}
public NodeEngineShutdownReason Run(bool nodeReuse, bool lowPriority, out Exception shutdownException, CancellationToken cancellationToken = default)
{
shutdownException = null;
using CancellationTokenSource cts = new CancellationTokenSource();
string pipeName = CommunicationsUtilities.GetRarPipeName(nodeReuse, lowPriority);
Handshake handshake = NodeProviderOutOfProc.GetHandshake(enableNodeReuse: nodeReuse,
enableLowPriority: lowPriority, specialNode: true);
IRarController controller = GetController(pipeName, handshake);
Task <int> rarTask = controller.StartAsync(cts.Token);
Task <NodeEngineShutdownReason> msBuildShutdown = RunShutdownCheckAsync(handshake, cts.Token);
// Timeout for node, limits lifetime of node to 1 hour
cts.CancelAfter(NodeShutdownTimeout);
int index;
try
{
// Wait for any of these tasks to finish:
// - rarTask can timeout (default is 15 minutes)
// - msBuildShutdown ends when it receives command to shutdown
// - node lifetime expires
index = Task.WaitAny(new Task[] { msBuildShutdown, rarTask }, cts.Token);
}
catch (OperationCanceledException e)
{
shutdownException = e;
return(NodeEngineShutdownReason.Error);
}
cts.Cancel();
if (index == 0)
{
// We know that the task completed, so we can get Result without waiting for it.
return(msBuildShutdown.Result);
}
else
{
// RAR task can only exit with connection error or timeout
return(NodeEngineShutdownReason.ConnectionFailed);
}
}
