public void Process(InvokeMethodArgs args)
{
Assert.ArgumentNotNull(args, nameof(args));
Assert.ArgumentNotNull(args.Device, nameof(args.Device));
Assert.ArgumentNotNull(args.Method, nameof(args.Method));
// No two way - call the method directly
if (!args.Method.TwoWay)
{
args.Response = InvokeMethod(args.Device, args.Method, args.Payload);
return;
}
// Two way - gets from cache
var resultFromCache = _methodCacheManager.GetResponseFromCache(args.Device, args.Method, args.Payload);
if (!string.IsNullOrEmpty(resultFromCache))
{
args.Response = DeserializeAndParse(args.Method, resultFromCache);
return;
}
// Or the method itself
args.Response = InvokeMethod(args.Device, args.Method, args.Payload);
// If taken from Itself then needs to save back to cache if TwoWay
if (args.Response != null && !string.IsNullOrEmpty(args.Response.RawMessage))
{
_methodCacheManager.SaveResponseToCache(args.Device, args.Method, args.Payload, args.Response.RawMessage);
}
}
public void Process(MessageReceivedArgs args)
{
Assert.ArgumentNotNull(args, nameof(args));
Assert.ArgumentNotNull(args.EventData, nameof(args.EventData));
Assert.ArgumentNotNull(args.Database, nameof(args.Database));
var eventData = args.EventData;
if (eventData?.Body.Array == null)
{
return;
}
var data = Encoding.UTF8.GetString(eventData.Body.Array);
Log.Info($"Message received on partition {args.Partition}: {data}", args.EventData);
// Find the key that brings the method reference - won't handle the message if this is not found
var methodKey = eventData.Properties.Keys.FirstOrDefault(p => p.ToLower() == MethodProperyName.ToLower());
if (string.IsNullOrEmpty(methodKey))
{
return;
}
var methodNameOrPath = eventData.Properties[methodKey].ToString();
var method = _hubRepository.GetMethodByName(methodNameOrPath, args.Database);
var device = _hubRepository.GetDeviceByName(methodNameOrPath, args.Database);
if (method == null || device == null)
{
return;
}
// Get payload from device (if any)
var payloadKey = eventData.Properties.Keys.FirstOrDefault(p => p.ToLower() == PayloadProperyName.ToLower());
var payload = string.IsNullOrEmpty(payloadKey) ? string.Empty : eventData.Properties[payloadKey].ToString();
// Store results on cache
_methodCacheManager.SaveResponseToCache(device, method, payload, data);
}
