protected override void Create()
{
base.Create();
var db = this.TfDb;
_coreInputBus = new InMemoryBus("bus");
_coreQueue = new QueuedHandler(_coreInputBus, "ProjectionCoreQueue");
_readerInputBus = new InMemoryBus("Reader Input");
_projectionNode = new ProjectionWorkerNode(db, _coreQueue, Node.HttpService);
_projectionNode.SetupMessaging(_coreInputBus, _readerInputBus);
_forwarder = new RequestResponseQueueForwarder(inputQueue: _coreQueue, externalRequestQueue: Node.MainQueue);
// forwarded messages
_projectionNode.CoreOutput.Subscribe <ClientMessage.ReadEvent>(_forwarder);
_projectionNode.CoreOutput.Subscribe <ClientMessage.ReadEventsBackwards>(_forwarder);
_projectionNode.CoreOutput.Subscribe <ClientMessage.ReadEventsForward>(_forwarder);
_projectionNode.CoreOutput.Subscribe <ClientMessage.ReadEventsFromTF>(_forwarder);
_projectionNode.CoreOutput.Subscribe <ClientMessage.WriteEvents>(_forwarder);
_coreInputBus.Subscribe(new UnwrapEnvelopeHandler());
Node.Bus.Subscribe(Forwarder.Create <SystemMessage.BecomeShuttingDown>(_coreQueue));
Node.Bus.Subscribe(Forwarder.Create <SystemMessage.SystemInit>(_coreQueue));
Node.Bus.Subscribe(Forwarder.Create <SystemMessage.SystemStart>(_coreQueue));
_projectionNode.CoreOutput.Subscribe(Node.TimerService);
_coreInputBus.Subscribe <SystemMessage.SystemStart>(this);
}
private void SetupMessaging(
TFChunkDb db, QueuedHandler mainQueue, InMemoryBus mainBus, TimerService timerService,
HttpService httpService)
{
_coreQueues = new List <QueuedHandler>();
_managerInputBus = new InMemoryBus("manager input bus");
_managerInputQueue = new QueuedHandler(_managerInputBus, "ProjectionManager");
while (_coreQueues.Count < _projectionWorkerThreadCount)
{
var coreInputBus = new InMemoryBus("bus");
var coreQueue = new QueuedHandler(coreInputBus, "ProjectionCoreQueue #" + _coreQueues.Count);
var projectionNode = new ProjectionWorkerNode(db, coreQueue);
projectionNode.SetupMessaging(coreInputBus);
var forwarder = new RequestResponseQueueForwarder(
inputQueue: coreQueue, externalRequestQueue: mainQueue);
// forwarded messages
projectionNode.CoreOutput.Subscribe <ClientMessage.ReadEvent>(forwarder);
projectionNode.CoreOutput.Subscribe <ClientMessage.ReadStreamEventsBackward>(forwarder);
projectionNode.CoreOutput.Subscribe <ClientMessage.ReadStreamEventsForward>(forwarder);
projectionNode.CoreOutput.Subscribe <ClientMessage.ReadAllEventsForward>(forwarder);
projectionNode.CoreOutput.Subscribe <ClientMessage.WriteEvents>(forwarder);
projectionNode.CoreOutput.Subscribe(
Forwarder.Create <ProjectionMessage.Projections.Management.StateReport>(_managerInputQueue));
projectionNode.CoreOutput.Subscribe(
Forwarder.Create <ProjectionMessage.Projections.Management.StatisticsReport>(_managerInputQueue));
projectionNode.CoreOutput.Subscribe(
Forwarder.Create <ProjectionMessage.Projections.StatusReport.Started>(_managerInputQueue));
projectionNode.CoreOutput.Subscribe(
Forwarder.Create <ProjectionMessage.Projections.StatusReport.Stopped>(_managerInputQueue));
projectionNode.CoreOutput.Subscribe(
Forwarder.Create <ProjectionMessage.Projections.StatusReport.Faulted>(_managerInputQueue));
projectionNode.CoreOutput.Subscribe(timerService);
projectionNode.CoreOutput.Subscribe(Forwarder.Create <Message>(coreQueue)); // forward all
coreInputBus.Subscribe(new UnwrapEnvelopeHandler());
_coreQueues.Add(coreQueue);
}
_projectionManagerNode = ProjectionManagerNode.Create(
db, _managerInputQueue, httpService, _coreQueues.Cast <IPublisher>().ToArray());
_projectionManagerNode.SetupMessaging(_managerInputBus);
{
var forwarder = new RequestResponseQueueForwarder(
inputQueue: _managerInputQueue, externalRequestQueue: mainQueue);
_projectionManagerNode.Output.Subscribe <ClientMessage.ReadEvent>(forwarder);
_projectionManagerNode.Output.Subscribe <ClientMessage.ReadStreamEventsBackward>(forwarder);
_projectionManagerNode.Output.Subscribe <ClientMessage.ReadStreamEventsForward>(forwarder);
_projectionManagerNode.Output.Subscribe <ClientMessage.WriteEvents>(forwarder);
_projectionManagerNode.Output.Subscribe(Forwarder.Create <Message>(_managerInputQueue));
// self forward all
mainBus.Subscribe(Forwarder.Create <SystemMessage.SystemInit>(_managerInputQueue));
mainBus.Subscribe(Forwarder.Create <SystemMessage.SystemStart>(_managerInputQueue));
mainBus.Subscribe(Forwarder.Create <SystemMessage.StateChangeMessage>(_managerInputQueue));
_managerInputBus.Subscribe(new UnwrapEnvelopeHandler());
}
}
