public async Task <ActionResult> GetCommand(string modelid)
{
List <COMMAND_DATA> commandData = new List <COMMAND_DATA>();
try
{
DTDLModelResolver resolver = new DTDLModelResolver(_modelRepoUrl, _gitToken, _logger);
var modelData = await resolver.ParseModelAsync(modelid);
var interfaces = modelData.Where(r => r.Value.EntityKind == DTEntityKind.Command).ToList();
foreach (var dt in interfaces)
{
COMMAND_DATA data = new COMMAND_DATA();
DTCommandInfo commandInfo = dt.Value as DTCommandInfo;
if (commandInfo.DisplayName.Count > 0)
{
data.CommandDisplayName = commandInfo.DisplayName["en"];
}
if (commandInfo.Description.Count > 0)
{
data.CommandDescription = commandInfo.Description["en"];
}
data.CommandName = commandInfo.Name;
if (commandInfo.Request != null)
{
if (data.request == null)
{
data.request = new List <COMMAND_REQUEST>();
}
COMMAND_REQUEST request = new COMMAND_REQUEST();
request.requestName = commandInfo.Request.Name;
request.requestKind = commandInfo.Request.Schema.EntityKind.ToString();
request.requestDescription = commandInfo.Request.Description["en"];
request.requestisplayName = commandInfo.Request.DisplayName["en"];
data.request.Add(request);
}
commandData.Add(data);
}
}
catch (Exception ex)
{
_logger.LogError($"Error {ex}");
}
return(Json(commandData));
}
private static async Task ProcessDeviceConnected(JObject deviceEventData, ILogger log)
{
log.LogInformation(">> DeviceConnected Event");
// Process Device Connected Event.
// https://docs.microsoft.com/en-us/azure/iot-hub/iot-hub-event-grid#device-connected-schema
// Example of sending a direct method (command)
try
{
// Get Device Id
string deviceId = deviceEventData["deviceId"].ToString();
// Get Device Instance from IoT Hub
// https://docs.microsoft.com/en-us/dotnet/api/microsoft.azure.devices.registrymanager.getdeviceasync?view=azure-dotnet
Device device = await _registryManager.GetDeviceAsync(deviceId);
if (device.ConnectionState != DeviceConnectionState.Connected)
{
log.LogWarning($"Device {deviceId} is not connected");
return;
}
// Get DTDL Model ID from Device Twin
// https://docs.microsoft.com/en-us/dotnet/api/microsoft.azure.devices.registrymanager.gettwinasync?view=azure-dotnet
var twin = await _registryManager.GetTwinAsync(deviceId);
if (!string.IsNullOrEmpty(twin.ModelId))
{
IReadOnlyDictionary <Dtmi, DTEntityInfo> parsedModel = null;
string commandName = string.Empty;
log.LogInformation($"Model ID : {twin.ModelId}");
// Parse DTDL Model
parsedModel = await DeviceModelResolveAndParse(twin.ModelId);
if (twin.ModelId.Contains("impinj"))
{
commandName = "Presets";
}
else if (twin.ModelId.Contains("wioterminal_aziot_example"))
{
commandName = "ringBuzzer";
}
// We are interested in only commands
DTCommandInfo command = parsedModel.Where(r => r.Value.EntityKind == DTEntityKind.Command).Select(x => x.Value as DTCommandInfo).Where(x => x.Name == commandName).FirstOrDefault();
if (command != null)
{
string componentName = string.Empty;
commandName = string.Empty;
// If no match, this interface must be from Component
if (!twin.ModelId.Equals(command.DefinedIn.AbsoluteUri))
{
var component = parsedModel.Where(r => r.Value.EntityKind == DTEntityKind.Component).Select(x => x.Value as DTComponentInfo).Where(x => x.Schema.Id.ToString() == command.ChildOf.AbsoluteUri).FirstOrDefault();
if (component != null)
{
componentName = component.Name;
}
}
if (!string.IsNullOrEmpty(componentName))
{
// Add component name
// https://docs.microsoft.com/en-us/azure/iot-pnp/concepts-convention#commands
commandName = $"{componentName}*{command.Name}";
}
else
{
commandName = $"{command.Name}";
}
log.LogInformation($"Sending command {commandName} / Description : {command.Description}");
var cmd = new CloudToDeviceMethod(commandName)
{
ResponseTimeout = TimeSpan.FromSeconds(30)
};
if (commandName.Equals("ringBuzzer"))
{
cmd.SetPayloadJson("500");
}
var response = await _serviceClient.InvokeDeviceMethodAsync(deviceId, cmd);
log.LogInformation($"Response status: {response.Status}, payload: {response.GetPayloadAsJson()}");
}
}
}
catch (Exception ex)
{
log.LogWarning($"Failed to process Device Connected Event : Exception '{ex.Message}'");
}
log.LogInformation("<< DeviceConnected Event");
}