public static async Task PublishMQTTMessageAsync(DeviceConfig deviceConfig, string payload, string alerter)
{
var topic = deviceConfig.FeedbackTopic + "/" + alerter;
var message = new MqttApplicationMessageBuilder()
.WithTopic(topic)
.WithPayload(payload)
.WithExactlyOnceQoS()
.WithRetainFlag()
.Build();
if (MqttClient == null | !MqttClient.IsConnected)
{
MqttClient = await ConnectAsync("IoTEdgeModule");
}
await MqttClient.PublishAsync(message);
Console.WriteLine($"Message '{payload}' sent to {topic}");
}
private static async Task MessageReceivedAsync(object sender, MqttApplicationMessageReceivedEventArgs eventArgs)
{
var info = $"Timestamp: {DateTime.Now:O} | Topic: {eventArgs.ApplicationMessage.Topic} | Payload: {Encoding.UTF8.GetString(eventArgs.ApplicationMessage.Payload)} | QoS: {eventArgs.ApplicationMessage.QualityOfServiceLevel}";
Console.WriteLine($"Message: {info}");
var payload = Encoding.UTF8.GetString(eventArgs.ApplicationMessage.Payload);
try
{
string topic = eventArgs.ApplicationMessage.Topic;
DeviceConfig deviceConfig = Devices.Find(d => d.DataTopic.Equals(topic));
string dataBuffer = "Unkown format";
if (deviceConfig.Schema.Equals("DefaultEngine"))
{
var messageBody = JsonConvert.DeserializeObject <MessageBody>(payload);
if (messageBody.Machine.Temperature >= Temp_Threshold)
{
Console.WriteLine("Alert: over Temp_Threshold");
await PublishMQTTMessageAsync(deviceConfig, messageBody.TimeCreated.ToLongTimeString(), "MQTTClient");
}
dataBuffer = JsonConvert.SerializeObject(messageBody);
}
var message = new Microsoft.Azure.Devices.Client.Message(Encoding.UTF8.GetBytes(dataBuffer));
//TODO: package sous forme de propriété
// MqttTransportSettings mqttSetting = new MqttTransportSettings(TransportType.Mqtt_Tcp_Only);
// ITransportSettings[] settings = { mqttSetting };
// ioTHubModuleClient = await ModuleClient.CreateFromEnvironmentAsync(settings);
// await ioTHubModuleClient.OpenAsync();
await ioTHubModuleClient.SendEventAsync("output1", message);
}
catch (Exception ex)
{
Console.WriteLine(ex.Message);
}
}
public static async Task <MethodResponse> AlertAsync(MethodRequest methodRequest, object moduleClient)
{
try
{
Console.WriteLine("In AlertAsync");
var data = Encoding.UTF8.GetString(methodRequest.Data);
Console.WriteLine("Received data: " + data.ToString());
var messageBody = new MessageBody();
DeviceConfig deviceConfig = Devices.Find(d => d.ID.Equals("Dev367"));
await PublishMQTTMessageAsync(deviceConfig, messageBody.TimeCreated.ToLongTimeString(), "AlertingCloud");
var methodResponse = new MethodResponse(Encoding.UTF8.GetBytes("{\"status\": \"ok\"}"), 200);
return(await Task.FromResult(methodResponse));
}
catch (Exception ex)
{
Console.WriteLine(ex.Message);
Console.WriteLine(ex.StackTrace);
return(await Task.FromResult(new MethodResponse(500)));
}
}
static async Task <MessageResponse> ManageASAAlertsAsync(Microsoft.Azure.Devices.Client.Message message, object userContext)
{
ModuleClient moduleClient = (ModuleClient)userContext;
byte[] messageBytes = message.GetBytes();
string messageString = Encoding.UTF8.GetString(messageBytes);
Console.WriteLine($"Alert from ASA received: [{messageString}]");
try
{
var messageBody = JsonConvert.DeserializeObject <ASAAlert>(messageString);
var deviceId = messageBody.DeviceId;
DeviceConfig deviceConfig = Devices.Find(d => d.ID.Equals(deviceId));
await PublishMQTTMessageAsync(deviceConfig, messageBody.Command.ToString(), "AlertingASA");
return(MessageResponse.Completed);
}
catch (AggregateException ex)
{
foreach (Exception exception in ex.InnerExceptions)
{
Console.WriteLine();
Console.WriteLine("Error in sample: {0}", exception);
}
// Indicate that the message treatment is not completed.
return(MessageResponse.Abandoned);
}
catch (Exception ex)
{
Console.WriteLine();
Console.WriteLine("Error in sample: {0}", ex.Message);
// Indicate that the message treatment is not completed.
return(MessageResponse.Abandoned);
}
}
static Task OnDesiredPropertiesUpdate(TwinCollection desiredProperties, object userContext)
{
try
{
Console.WriteLine($"{DateTime.Now.ToString()} - Desired property change:");
Console.WriteLine(JsonConvert.SerializeObject(desiredProperties));
if (desiredProperties.Contains("Temp_Threshold") && desiredProperties["Temp_Threshold"] != null)
{
if (int.TryParse(desiredProperties["Temp_Threshold"].ToString(), out int ts))
{
Temp_Threshold = ts;
Console.WriteLine($"value updated for Property 'Temp_Threshold': {Temp_Threshold}");
}
else
{
Console.WriteLine($"Check the property Temp_Threshold ({desiredProperties["Temp_Threshold"]}) in the Module Twin. It must be an int");
}
}
if (desiredProperties.Contains("MQTT_BROKER_ADDRESS") && desiredProperties["MQTT_BROKER_ADDRESS"] != null)
{
MQTT_BROKER_ADDRESS = desiredProperties["MQTT_BROKER_ADDRESS"];
Console.WriteLine($"value updated for Property 'MQTT_BROKER_ADDRESS': {MQTT_BROKER_ADDRESS}");
}
if (desiredProperties.Contains("MQTT_BROKER_PORT") && desiredProperties["MQTT_BROKER_PORT"] != null)
{
if (int.TryParse(desiredProperties["MQTT_BROKER_PORT"].ToString(), out int port))
{
MQTT_BROKER_PORT = port;
Console.WriteLine($"value updated for Property 'MQTT_BROKER_PORT': {MQTT_BROKER_PORT}");
}
else
{
Console.WriteLine($"Check the property MQTT_BROKER_PORT ({desiredProperties["MQTT_BROKER_PORT"]}) in the Module Twin. It must be an int");
}
}
if (desiredProperties.Contains("NBDevices") && desiredProperties["NBDevices"] != null)
{
if (int.TryParse(desiredProperties["NBDevices"].ToString(), out int nb))
{
NBDevices = nb;
Console.WriteLine($"value updated for Property 'NBDevices': {NBDevices}");
}
else
{
Console.WriteLine($"Check the property NBDevices ({desiredProperties["NBDevices"]}) in the Module Twin. It must be an int");
}
}
Devices = new List <DeviceConfig>();
for (int i = 1; i <= NBDevices; i++)
{
string deviceIdKey = $"Device{i}_ID";
string deviceSchemaKey = $"Device{i}_Schema";
string deviceDataTopicKey = $"Device{i}_DataTopic";
string deviceFeedbackTopicKey = $"Device{i}_FeedbackTopic";
DeviceConfig deviceConfig = new DeviceConfig();
if (desiredProperties.Contains(deviceIdKey) && desiredProperties[deviceIdKey] != null)
{
deviceConfig.ID = desiredProperties[deviceIdKey];
}
if (desiredProperties.Contains(deviceSchemaKey) && desiredProperties[deviceSchemaKey] != null)
{
deviceConfig.Schema = desiredProperties[deviceSchemaKey];
}
if (desiredProperties.Contains(deviceDataTopicKey) && desiredProperties[deviceDataTopicKey] != null)
{
deviceConfig.DataTopic = desiredProperties[deviceDataTopicKey];
}
if (desiredProperties.Contains(deviceFeedbackTopicKey) && desiredProperties[deviceFeedbackTopicKey] != null)
{
deviceConfig.FeedbackTopic = desiredProperties[deviceFeedbackTopicKey];
}
Devices.Add(deviceConfig);
Console.WriteLine($"Device added: {deviceConfig.ID}");
}
Console.WriteLine("Subscribing to Topics");
Task.Run(SubscribeMQTTTopicsAsync).Wait();
}
catch (AggregateException ex)
{
foreach (Exception exception in ex.InnerExceptions)
{
Console.WriteLine();
Console.WriteLine("Error when receiving desired property: {0}", exception);
}
}
catch (Exception ex)
{
Console.WriteLine();
Console.WriteLine("Error when receiving desired property: {0}", ex.Message);
}
return(Task.CompletedTask);
}
