Made AMQPPush for pushing the device limits to RabbitMQ and consume after 1 hour

backend/Api/AMQP/AMQPPush.cs

@@ -0,0 +1,88 @@
+using Api.DBAccess;
+using Api.Models;
+using RabbitMQ.Client;
+using RabbitMQ.Client.Events;
+using System.Text;
+using System.Text.Json;
+
+namespace Api.AMQP
+{
+    public class AMQPPush
+    {
+        private readonly IConfiguration _configuration;
+        private readonly DbAccess _dbAccess;
+
+        public AMQPPush(IConfiguration configuration, DbAccess dbAccess)
+        {
+            _dbAccess = dbAccess;
+            _configuration = configuration;
+        }
+
+        public async Task Handle_Push_Device_Limits()
+        {
+            var factory = new ConnectionFactory();
+            var queue = "temperature-limits";
+
+            factory.UserName = _configuration["AMQP:username"];
+            factory.Password = _configuration["AMQP:password"];
+            factory.HostName = _configuration["AMQP:host"];
+            factory.Port = Convert.ToInt32(_configuration["AMQP:port"]);
+
+            // Connecting to our rabbitmq and after that it create's a channel where you can connect to a queue
+            var conn = await factory.CreateConnectionAsync();
+            Console.WriteLine("AMQPClient connected");
+            var channel = await conn.CreateChannelAsync();
+
+            // Here we connect to the queue through the channel that got created earlier
+            await channel.QueueDeclareAsync(queue: queue, durable: false, exclusive: false, autoDelete: false);
+            Console.WriteLine($"{queue} connected");
+
+            while (true)
+            {
+
+                var devices = _dbAccess.ReadDevices();
+                foreach (var device in devices)
+                {
+                    var deviceLimit = new DeviceLimit();
+                    deviceLimit.ReferenceId = device.ReferenceId;
+                    deviceLimit.TempHigh = device.TempHigh;
+                    deviceLimit.TempLow = device.TempLow;
+                    string message = JsonSerializer.Serialize(deviceLimit);
+                    var body = Encoding.UTF8.GetBytes(message);
+                    await channel.BasicPublishAsync(exchange: string.Empty, routingKey: queue, body: body);
+                }
+
+                await Task.Delay(10000);
+
+                await channel.CloseAsync();
+                Console.WriteLine($"{queue} disconnected");
+                await conn.CloseAsync();
+                Console.WriteLine("AMQPClient disconnected");
+                await channel.DisposeAsync();
+                await conn.DisposeAsync();
+                await Task.Delay(3600000);
+
+                conn = await factory.CreateConnectionAsync();
+                Console.WriteLine("AMQPClient connected");
+                channel = await conn.CreateChannelAsync();
+
+                // Here we connect to the queue through the channel that got created earlier
+                await channel.QueueDeclareAsync(queue: queue, durable: false, exclusive: false, autoDelete: false);
+                Console.WriteLine($"{queue} connected");
+
+                // Everytime a message is recieved from the queue it goes into this consumer.ReceivedAsync
+                var consumer = new AsyncEventingBasicConsumer(channel);
+                consumer.ReceivedAsync += (model, ea) =>
+                {
+                    Console.WriteLine("Emptying queue");
+
+                    return Task.CompletedTask;
+                };
+
+                // Consumes the data in the queue
+                await channel.BasicConsumeAsync(queue, true, consumer);
+
+            }
+        }
+    }
+}

backend/Api/AMQP/AMQPReciever.cs

@@ -30,7 +30,7 @@ namespace Api.AMQPReciever
 
             // Connecting to our rabbitmq and after that it create's a channel where you can connect to a queue
             using var conn = await factory.CreateConnectionAsync();
-            Console.WriteLine("AMQPClien connected");
+            Console.WriteLine("AMQPClient connected");
             using var channel = await conn.CreateChannelAsync();
 
             // Here we connect to the queue through the channel that got created earlier
@@ -45,7 +45,7 @@ namespace Api.AMQPReciever
                 var body = ea.Body.ToArray();
                 var message = Encoding.UTF8.GetString(body);
 
-                var messageReceive = JsonSerializer.Deserialize<MQTTMessageReceive>(message);
+                var messageReceive = JsonSerializer.Deserialize<MessageReceive>(message);
 
                 // Checks if the message has the data we need
                 if (messageReceive == null || messageReceive.device_id == null || messageReceive.timestamp == 0)

backend/Api/DBAccess/DBAccess.cs

@@ -189,6 +189,12 @@ namespace Api.DBAccess
             return _context.Devices.FirstOrDefault(d => d.ReferenceId == refenreId);
         }
 
+        // Returns all devices
+        public List<Device> ReadDevices()
+        {
+            return _context.Devices.ToList();
+        }
+
         /// <summary>
         /// Updates a device in the database
         /// </summary>

backend/Api/MQTTReciever/MQTTReciever.cs

@@ -43,7 +43,7 @@ namespace Api.MQTTReciever
 
                     string sensorData = Encoding.UTF8.GetString(e.ApplicationMessage.Payload);
 
-                    var messageReceive = JsonSerializer.Deserialize<MQTTMessageReceive>(sensorData);
+                    var messageReceive = JsonSerializer.Deserialize<MessageReceive>(sensorData);
 
                     // Checks if the message has the data we need
                     if (messageReceive == null || messageReceive.device_id == null || messageReceive.timestamp == 0)

backend/Api/Models/DeviceLimit.cs

@@ -0,0 +1,11 @@
+namespace Api.Models
+{
+    public class DeviceLimit
+    {
+        public double TempHigh { get; set; }
+
+        public double TempLow { get; set; }
+
+        public string? ReferenceId { get; set; }
+    }
+}

backend/Api/Models/MessageReceive.cs

@@ -1,6 +1,6 @@
 namespace Api.Models
 {
-    public class MQTTMessageReceive
+    public class MessageReceive
     {
         public double temperature { get; set; }
 

backend/Api/Program.cs

@@ -1,4 +1,5 @@
 using Api;
+using Api.AMQP;
 using Api.AMQPReciever;
 using Api.DBAccess;
 using Api.MQTTReciever;
@@ -27,8 +28,10 @@ class Program
                 // Choose to either connect AMQP or MQTT
                 if (rabbitMQ == "AMQP")
                 {
-                    AMQPReciever amqp = new AMQPReciever(configuration, dbAccess);
+                    AMQPReciever amqpReciever = new AMQPReciever(configuration, dbAccess);
-                    amqp.Handle_Received_Application_Message().Wait();
+                    amqpReciever.Handle_Received_Application_Message().Wait();
+                    AMQPPush aMQPPush = new AMQPPush(configuration, dbAccess);
+                    aMQPPush.Handle_Push_Device_Limits().Wait();
                 }
                 else if (rabbitMQ == "MQTT")
                 {