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);
}
/// <summary>
/// Parameters accepts string separated by ','
/// Position 0 = Sitecore ID, Sitecore Path or dot separated string Eg: "HubName.DeviceName.MethodName"
/// Position 1 = PropertyName
/// Position 2 = Payload
/// </summary>
/// <param name="strParameters"></param>
/// <returns></returns>
public object GetValue(string strParameters)
{
if (string.IsNullOrEmpty(strParameters) || !strParameters.Contains(","))
{
return(string.Empty);
}
var parameters = strParameters.Split(',');
if (parameters.Length < 2)
{
return(string.Empty);
}
var methodPart = parameters[0].Trim();
var propertyPart = parameters[1].Trim();
var payloadPart = parameters.Length > 2 ? parameters[2].Trim() : string.Empty;
if (string.IsNullOrEmpty(methodPart) || string.IsNullOrEmpty(propertyPart))
{
return(string.Empty);
}
// Get method and device
var device = _hubRepository.GetDeviceByName(methodPart);
var method = _hubRepository.GetMethodByName(methodPart);
if (method == null || device == null)
{
return(string.Empty);
}
// Invoke method and get result
var result = method.Invoke(device, payloadPart);
var propertyValue = result.GetValue(propertyPart);
return(propertyValue);
//return propertyValue==null ? string.Empty : propertyValue.ToString();
}
public SmartDisplayController(IIoTHubRepository ioTHubRepository)
{
_method = ioTHubRepository.GetMethodByName(MethodPath);
_device = ioTHubRepository.GetDeviceByName(MethodPath);
}
