static void Main(string[] args)
{
//change the headnode name here
const string headnode = "[headnode]";
const string serviceName = "EchoService";
const int numRequests = 8;
SessionStartInfo info = new SessionStartInfo(headnode, serviceName);
//the sample code needs at least 2 cores in the cluster
info.SessionResourceUnitType = SessionUnitType.Core;
info.MaximumUnits = 2;
info.MinimumUnits = 2;
Console.Write("Creating a session for EchoService...");
using (DurableSession session = DurableSession.CreateSession(info))
{
Console.WriteLine("done session id = {0}", session.Id);
NetTcpBinding binding = new NetTcpBinding(SecurityMode.Transport);
using (BrokerClient <IService1> client = new BrokerClient <IService1>(session, binding))
{
Console.Write("Sending {0} requests...", numRequests);
for (int i = 0; i < numRequests; i++)
{
EchoOnExitRequest request = new EchoOnExitRequest(new TimeSpan(0, 0, 5));
client.SendRequest <EchoOnExitRequest>(request, i);
}
client.EndRequests();
Console.WriteLine("done");
// cancel half of the service tasks when processing the requests
ThreadPool.QueueUserWorkItem(delegate
{
//wait 5 seconds to try cancel service tasks.
Thread.Sleep(3 * 1000);
try
{
Scheduler scheduler = new Scheduler();
try
{
scheduler.Connect(headnode);
}
catch (Exception e)
{
Console.WriteLine("Error connecting store.{0}", e.ToString());
return;
}
int jobId = session.GetProperty <int>("HPC_ServiceJobId");
ISchedulerJob job = scheduler.OpenJob(jobId);
job.Refresh();
ISchedulerCollection taskList = job.GetTaskList(null, null, true);
int onFlag = 0;
foreach (ISchedulerTask task in taskList)
{
// cancel half of the service tasks
if (onFlag++ % 2 == 0)
{
try
{
if (task.State == TaskState.Running)
{
Console.WriteLine("Try to cancel task {0}", task.TaskId);
job.CancelTask(task.TaskId);
job.Commit();
}
}
catch (Exception ex)
{
Console.WriteLine("Got exception when trying to cancel task {0}:{1}", task.TaskId, ex.Message);
}
}
}
}
catch (Exception ex)
{
Console.WriteLine("Exception when trying to cancel the service tasks. {0}", ex.Message);
}
});
Console.WriteLine("Retrieving responses...");
try
{
int count = 0;
foreach (var response in client.GetResponses <EchoOnExitResponse>())
{
try
{
string reply = response.Result.EchoOnExitResult;
Console.WriteLine("\tReceived response for request {0}: {1}", response.GetUserData <int>(), reply);
count++;
}
catch (Exception ex)
{
Console.WriteLine("Error occured while processing {0}-th request: {1}", response.GetUserData <int>(), ex.Message);
}
}
Console.WriteLine("Done retrieving responses.{0}/{1} responses retrieved ", count, numRequests);
}
catch (SessionException ex)
{
Console.WriteLine("SessionException while getting responses: {0}", ex.Message);
}
catch (Exception ex)
{
Console.WriteLine("Exception while getting responses: {0}", ex.Message);
}
}
// Close connections and delete messages stored in the system
session.Close();
Console.WriteLine("Press any key to exit.");
Console.ReadKey();
}
}