protected override void Handle(SensorLifetimeRequest request)
{
RegistryResponse regResponse = LocalRegistry
.getSensorRecord(request.NewEvent.SensorName);
if (request.NewEvent.lifeStage == LifetimeStages.Startup)
{
if (regResponse.status == RegistryStatus.noSuchRecord)
{
LocalRegistry.addSensorRecord(request.NewEvent.SensorName,
request.NewEvent.IpAddress,
request.NewEvent.ListeningPort,
request.NewEvent.LastReadIndex);
}
else
{
logger.LogMessage("Startup event for ALREADY registered sensor ... ");
}
}
else
{
// shutdown event received
if (regResponse.status == RegistryStatus.ok)
{
LocalRegistry.removeSensorRecord(request.NewEvent.SensorName);
}
else
{
logger.LogMessage("Shutdown event for NOT registered sensor ... ");
}
}
}
protected override async Task Handle(
SensorUpdateRequest request,
CancellationToken cancellationToken)
{
RegistryResponse regResponse = LocalRegistry
.getSensorRecord(request.NewEvent.SensorName);
if (regResponse.status == RegistryStatus.ok)
{
LocalRegistry.updateSensorRecord(
request.NewEvent.SensorName,
request.NewEvent.IpAddress,
request.NewEvent.ListeningPort,
request.NewEvent.LastReadIndex);
}
else if (regResponse.status == RegistryStatus.noSuchRecord)
{
// we received event from sensor that is still not registered
// this request will check if that sensor is still alive
// and return it's info if it is alive
var result = await mediator.Send(new CheckSensorInfoRequest(
request.NewEvent.SensorName,
request.NewEvent.IpAddress,
request.NewEvent.ListeningPort));
if (result != null)
{
LocalRegistry.addSensorRecord(
result.SensorName,
result.IpAddress,
result.ListeningPort,
result.LastReadIndex);
}
}
return;
}