protected async override Task OnActivateAsync()
{
try
{
// Initialize States
await StateManager.TryAddStateAsync(QueueState, new Queue<Payload>());
var result = await StateManager.TryGetStateAsync<Device>(MetadataState);
if (!result.HasValue)
{
// The device id is a string with the following format: device<number>
var deviceIdAsString = Id.ToString();
long deviceId;
long.TryParse(deviceIdAsString.Substring(6), out deviceId);
var metadata = new Device
{
DeviceId = deviceId,
Name = deviceIdAsString,
MinThreshold = MinThresholdDefault,
MaxThreshold = MaxThresholdDefault,
Model = Unknown,
Type = Unknown,
Manufacturer = Unknown,
City = Unknown,
Country = Unknown
};
await StateManager.TryAddStateAsync(MetadataState, metadata);
}
// Create EventHubClient
CreateEventHubClient();
}
catch (Exception ex)
{
// Trace exception as ETW event
ActorEventSource.Current.Error(ex);
// Trace exception using Application Insights
Program.TelemetryClient.TrackException(ex, new Dictionary<string, string>
{
{ "ActorType", "DeviceActor"},
{ "ActorId", Id.ToString()},
{ "ServiceName", ActorService.Context.ServiceName.ToString()},
{ "Partition", ActorService.Context.PartitionId.ToString()},
{ "Node", ActorService.Context.NodeContext.NodeName}
});
}
}
public async Task<Device> GetData()
{
// Retrieve Metadata from the Actor state
Device metadata;
var metadataResult = await StateManager.TryGetStateAsync<Device>(MetadataState);
if (metadataResult.HasValue)
{
metadata = metadataResult.Value;
}
else
{
// The device id is a string with the following format: device<number>
var deviceIdAsString = Id.ToString();
long deviceId;
long.TryParse(deviceIdAsString.Substring(6), out deviceId);
metadata = new Device
{
DeviceId = deviceId,
Name = deviceIdAsString,
MinThreshold = MinThresholdDefault,
MaxThreshold = MaxThresholdDefault,
Model = Unknown,
Type = Unknown,
Manufacturer = Unknown,
City = Unknown,
Country = Unknown
};
}
return metadata;
}
public async Task SetData(Device data)
{
// Validate parameter
if (data == null)
{
return;
}
// Save metadata to Actor state
await StateManager.SetStateAsync(MetadataState, data);
// Trace ETW event
ActorEventSource.Current.Metadata(data);
// Track Application Insights event
Program.TelemetryClient.TrackEvent(new EventTelemetry
{
Name = "Metadata",
Properties =
{
{"DeviceId", data.DeviceId.ToString(CultureInfo.InvariantCulture)},
{"Name", data.Name},
{"City", data.City},
{"Country", data.Country},
{"Manufacturer", data.Manufacturer},
{"Model", data.Model},
{"Type", data.Type},
{"MinThreshold", data.MinThreshold.ToString(CultureInfo.InvariantCulture)},
{"MaxThreshold", data.MaxThreshold.ToString(CultureInfo.InvariantCulture)},
{"ActorType", "DeviceActor"},
{"ActorId", Id.ToString()},
{"ServiceName", ActorService.Context.ServiceName.ToString()},
{"Partition", ActorService.Context.PartitionId.ToString()},
{"Node", ActorService.Context.NodeContext.NodeName}
}
});
}
public async Task SetDevice(Device device)
{
try
{
var proxy = GetActorProxy(device.DeviceId);
if (proxy != null)
{
await proxy.SetData(device);
}
}
catch (AggregateException ex)
{
if (ex.InnerExceptions?.Count > 0)
{
foreach (var exception in ex.InnerExceptions)
{
ServiceEventSource.Current.Message(exception.Message);
}
}
}
catch (Exception ex)
{
ServiceEventSource.Current.Message(ex.Message);
}
}
public void Metadata(Device device)
{
if (device != null && IsEnabled())
{
Metadata(device.DeviceId,
device.Name,
device.City,
device.Country,
device.Manufacturer,
device.Model,
device.Type,
device.MinThreshold,
device.MaxThreshold);
}
}
public void Alert(Device device, Payload payload)
{
if (device != null && payload != null && IsEnabled())
{
Alert(device.DeviceId,
device.Name,
device.City,
device.Country,
device.Manufacturer,
device.Model,
device.Type,
device.MinThreshold,
device.MaxThreshold,
payload.Value,
payload.Status,
payload.Timestamp);
}
}