public IpcClientTcpServerRouterFactory(string ipcClient, string tcpServer, int runtimeTimeoutMs, TcpServerRouterFactory.CreateInstanceDelegate factory, ILogger logger)
{
_logger = logger;
_ipcClientRouterFactory = new IpcClientRouterFactory(ipcClient, logger);
_tcpServerRouterFactory = factory(tcpServer, runtimeTimeoutMs, logger);
}
public IpcClientTcpServerRouterFactory(string ipcClient, string tcpServer, int runtimeTimeoutMs, ILogger logger)
{
_logger = logger;
_ipcClientRouterFactory = new IpcClientRouterFactory(ipcClient, logger);
_tcpServerRouterFactory = new TcpServerRouterFactory(tcpServer, runtimeTimeoutMs, logger);
}
async static Task <int> runRouter(CancellationToken token, TcpServerRouterFactory routerFactory, Callbacks callbacks)
{
List <Task> runningTasks = new List <Task>();
List <Router> runningRouters = new List <Router>();
try
{
routerFactory.Start();
callbacks?.OnRouterStarted(routerFactory.TcpServerAddress);
while (!token.IsCancellationRequested)
{
Task <Router> routerTask = null;
Router router = null;
try
{
routerTask = routerFactory.CreateRouterAsync(token);
do
{
// Search list and clean up dead router instances before continue waiting on new instances.
runningRouters.RemoveAll(IsRouterDead);
runningTasks.Clear();
foreach (var runningRouter in runningRouters)
{
runningTasks.Add(runningRouter.RouterTaskCompleted.Task);
}
runningTasks.Add(routerTask);
}while (await Task.WhenAny(runningTasks.ToArray()).ConfigureAwait(false) != routerTask);
if (routerTask.IsFaulted || routerTask.IsCanceled)
{
//Throw original exception.
routerTask.GetAwaiter().GetResult();
}
if (routerTask.IsCompleted)
{
router = routerTask.Result;
router.Start();
// Add to list of running router instances.
runningRouters.Add(router);
router = null;
}
routerTask.Dispose();
routerTask = null;
}
catch (Exception ex)
{
router?.Dispose();
router = null;
routerTask?.Dispose();
routerTask = null;
// Timing out on accepting new streams could mean that either the frontend holds an open connection
// alive (but currently not using it), or we have a dead backend. If there are no running
// routers we assume a dead backend. Reset current backend endpoint and see if we get
// reconnect using same or different runtime instance.
if (ex is BackendStreamTimeoutException && runningRouters.Count == 0)
{
routerFactory.Logger.LogDebug("No backend stream available before timeout.");
routerFactory.Reset();
}
// Timing out on accepting a new runtime connection means there is no runtime alive.
// Shutdown router to prevent instances to outlive runtime process (if auto shutdown is enabled).
if (ex is RuntimeTimeoutException)
{
routerFactory.Logger.LogInformation("No runtime connected before timeout.");
routerFactory.Logger.LogInformation("Starting automatic shutdown.");
throw;
}
}
}
}
catch (Exception ex)
{
routerFactory.Logger.LogInformation($"Shutting down due to error: {ex.Message}");
}
finally
{
if (token.IsCancellationRequested)
{
routerFactory.Logger.LogInformation("Shutting down due to cancelation request.");
}
runningRouters.RemoveAll(IsRouterDead);
runningRouters.Clear();
await routerFactory?.Stop();
callbacks?.OnRouterStopped();
routerFactory.Logger.LogInformation("Router stopped.");
}
return(0);
}
