/// <summary>
/// sends as much pending requests as there are waiting workers
/// of the specified service by
/// a) add the request to the pending requests within this service
/// if there is a message
/// b) remove all expired workers of this service
/// c) while there are waiting workers
/// get the next pending request
/// send to the worker
/// </summary>
private void ServiceDispatch(Service service, NetMQMessage message)
{
DebugLog($"Service [{service.Name}] dispatches -> {(message == null ? "PURGING" : "message = " + message)}");
// if message is 'null' just send pending requests
if (!ReferenceEquals(message, null))
{
service.AddRequest(message);
}
// remove all expired workers!
Purge();
// if there are requests pending and workers are waiting dispatch the requests
// as long as there are workers and requests
while (service.CanDispatchRequests())
{
var worker = service.GetNextWorker();
if (service.PendingRequests.Count > 0)
{
var request = service.GetNextRequest();
DebugLog($"Service Dispatch -> pending request {request} to {worker.Id}");
WorkerSend(worker, MDPCommand.Request, request);
}
else
{
// no more requests -> we're done
break;
}
}
}
/// <summary>
/// sends as much pending requests as there are waiting workers
/// of the specified service by
/// a) add the request to the pending requests within this service
/// if there is a message
/// b) remove all expired workers of this service
/// c) while there are waiting workers
/// get the next pending request
/// send to the worker
/// </summary>
private void ServiceDispatch (Service service, NetMQMessage message)
{
DebugLog (string.Format ("Service [{0}] dispatches -> {1}",
service.Name,
message == null ? "PURGING" : "message = " + message));
// if message is 'null' just send pending requests
if (!ReferenceEquals (message, null))
service.AddRequest (message);
// remove all expired workers!
Purge ();
// if there are requests pending and workers are waiting dispatch the requests
// as long as there are workers and requests
while (service.CanDispatchRequests ())
{
var worker = service.GetNextWorker ();
if (service.PendingRequests.Count > 0)
{
var request = service.GetNextRequest ();
DebugLog (string.Format ("Service Dispatch -> pending request {0} to {1}", request, worker.Id));
WorkerSend (worker, MDPCommand.Request, request);
}
else
// no more requests -> we're done
break;
}
}
public void GetNextWorker_SomeWaitingWorker_ShouldReturnOldestWorkerFirst()
{
Worker oldestWorker = null;
var service = new Service("service");
for (var i = 0; i < 10; i++)
{
var id = $"W0{i:N3}";
var worker = new Worker(id, new NetMQFrame(id), service);
if (i == 0)
oldestWorker = worker;
service.AddWaitingWorker(worker);
}
Assert.That(service.GetNextWorker(), Is.EqualTo(oldestWorker));
Assert.That(service.WaitingWorkers.Count(), Is.EqualTo(9));
}
public void GetNextWorker_GetAllWaitingWorkers_ShouldReturnEmptyWaitingAndLeaveKnownUnchanged()
{
var service = new Service("service");
for (var i = 0; i < 10; i++)
{
var id = $"W0{i:N3}";
var worker = new Worker(id, new NetMQFrame(id), service);
service.AddWaitingWorker(worker);
service.GetNextWorker();
}
Assert.That(service.WaitingWorkers, Is.Empty);
Assert.That(service.DoWorkersExist(), Is.True);
}