public static Payload GetPayload(byte[] serverPayload)
{
/*string bin_strng = "1100110001";
* int number = 0;
*
* number = Convert.ToInt32(bin_strng, 2);
* Console.WriteLine("Number value of binary \"{0}\" is = {1}",
* bin_strng, number);
*
* bin_strng = "1111100000110001";
* number = Convert.ToInt32(bin_strng, 2);
* Console.WriteLine("Number value of binary \"{0}\" is = {1}",
* bin_strng, number);
*/
var payload = new Payload();
var bitArray = new BitArray(serverPayload);
payload.Maneuver = (Maneuver)Convert.ToInt32(FunctionHelpers.ToBitString(bitArray, 0, 3), 2);
payload.PlatoonGap = Convert.ToInt32(FunctionHelpers.ToBitString(bitArray, 3, 11), 2);
payload.PlatoonOverrideStatus = Convert.ToInt32(FunctionHelpers.ToBitString(bitArray, 11, 12), 2) != 0;
payload.VehicleRank = Convert.ToInt32(FunctionHelpers.ToBitString(bitArray, 12, 16), 2);
payload.BreakPedal = Convert.ToInt32(FunctionHelpers.ToBitString(bitArray, 16, 23), 2);
payload.PlatoonDissolveStatus = Convert.ToInt32(FunctionHelpers.ToBitString(bitArray, 23, 24), 2) != 0;
payload.StationId = Convert.ToInt32(FunctionHelpers.ToBitString(bitArray, 24, 56), 2);
payload.StreamingRequests = Convert.ToInt32(FunctionHelpers.ToBitString(bitArray, 56, 58), 2);
payload.V2HealthStatus = Convert.ToInt32(FunctionHelpers.ToBitString(bitArray, 58, 59), 2) != 0;
payload.TruckRoutingStaus = Convert.ToInt32(FunctionHelpers.ToBitString(bitArray, 59, 61), 2);
payload.RealPayload = Encoding.ASCII.GetString(serverPayload);
return(payload);
}
private static void MqttConsumer_DataReceived(object sender, byte[] e)
{
var bitarry = new BitArray(e);
Console.WriteLine("Data received ===>" + FunctionHelpers.ToBitString(bitarry, 0, bitarry.Length));
}
public async Task StartConsume()
{
try
{
await Server.StartAsync(OptionsBuilder);
}
catch (Exception ex)
{
StopConsume();
Console.WriteLine(ex.Message);
throw;
}
Server.StartedHandler = new MqttServerStartedHandlerDelegate(e =>
{
Console.WriteLine("Mqtt Broker start");
});
Server.StoppedHandler = new MqttServerStoppedHandlerDelegate(e =>
{
Console.WriteLine("Mqtt Broker stop");
});
Server.ClientSubscribedTopicHandler = new MqttServerClientSubscribedHandlerDelegate(e =>
{
var vehicleId = e.TopicFilter.Topic
.Replace("platooning/", "").Replace("/#", "");
Console.WriteLine("Client subscribed " + e.ClientId + " topic " + e.TopicFilter.Topic + "Vehicle Id " +
vehicleId);
using var context = new MqttBrokerDbContext();
try
{
var audit = new Audit
{
ClientId = e.ClientId,
Type = "Sub",
Topic = e.TopicFilter.Topic,
Payload = JsonConvert.SerializeObject(e.TopicFilter, Formatting.Indented)
};
context.Audit.AddAsync(audit);
var subs = context.Subscribe.AsQueryable()
.FirstOrDefault(s => s.Topic == e.TopicFilter.Topic &&
s.ClientId == e.ClientId &&
s.QoS == e.TopicFilter.QualityOfServiceLevel.ToString());
if (subs != null)
{
return;
}
var subClient = new Subscribe
{
Topic = e.TopicFilter.Topic,
Enable = true,
ClientId = e.ClientId,
QoS = e.TopicFilter.QualityOfServiceLevel.ToString()
};
context.Subscribe.AddAsync(subClient);
context.SaveChanges();
}
catch (Exception exception)
{
var log = new Log
{
Exception = exception.StackTrace
};
context.Log.AddAsync(log);
context.SaveChanges();
Console.WriteLine(exception);
}
});
Server.ClientUnsubscribedTopicHandler = new MqttServerClientUnsubscribedTopicHandlerDelegate(args =>
{
try
{
var clientId = args.ClientId;
var topicFilter = args.TopicFilter;
Console.WriteLine($"[{DateTime.Now}] Client '{clientId}' un-subscribed to {topicFilter}.");
using var context = new MqttBrokerDbContext();
try
{
var sub = context.Subscribe.AsQueryable()
.FirstOrDefault(a => a.Topic == args.TopicFilter && a.ClientId == clientId);
if (sub == null)
{
return;
}
context.Subscribe.Update(sub !);
context.SaveChanges();
sub.Enable = false;
}
catch (Exception exception)
{
var log = new Log
{
Exception = exception.StackTrace
};
context.Log.AddAsync(log);
context.SaveChanges();
Console.WriteLine(exception);
}
}
catch (Exception ex)
{
Console.WriteLine($"[{DateTime.Now}] Client get error " + ex.Message);
}
});
Server.ClientConnectedHandler = new MqttServerClientConnectedHandlerDelegate(e =>
{
Console.WriteLine("Client Connected " + e.ClientId);
});
Server.ApplicationMessageReceivedHandler = new MqttApplicationMessageReceivedHandlerDelegate(e =>
{
using var context = new MqttBrokerDbContext();
try
{
var payload = FunctionHelpers.GetPayload(e.ApplicationMessage.Payload);
var audit = new Audit
{
ClientId = e.ClientId,
Type = "Pub",
Topic = e.ApplicationMessage.Topic,
Payload = JsonConvert.SerializeObject(payload, Formatting.Indented)
};
context.Audit.AddAsync(audit);
if (e.ClientId == null)
{
var log = new Log
{
Exception = new string("Broker publish message itself " +
JsonConvert.SerializeObject(payload, Formatting.Indented) + " " +
e.ClientId)
};
context.Log.AddAsync(log);
context.SaveChanges();
return;
}
if (payload.Maneuver == Maneuver.CreatePlatoon)
{
var vehPla = e.ApplicationMessage.Topic.Replace("platooning/message/", "");
var platoonId = vehPla.Split("/").Last();
var pla = context.Platoon.AsQueryable()
.FirstOrDefault(f => f.Enable && f.PlatoonRealId == platoonId);
if (pla == null)
{
var platoon = new Platoon()
{
Enable = true,
ClientId = e.ClientId,
IsLead = true,
VechicleId = vehPla.Split("/").First(),
PlatoonRealId = vehPla.Split("/").Last()
};
context.Platoon.AddAsync(platoon);
Console.WriteLine($"[{DateTime.Now}] Creating new Platoon Client Id " + e.ClientId +
" platooning Id" + platoon.PlatoonRealId + " payload " + audit.Payload);
}
else
{
Console.WriteLine($"[{DateTime.Now}] Platoon is already created Client Id " + e.ClientId +
" platooning Id" + platoonId + " payload " + audit.Payload);
}
}
else if (payload.Maneuver == Maneuver.JoinRequest)
{
var followingVec = e.ApplicationMessage.Topic.Replace("platooning/message/", "");
var isFollowing = context.Platoon.FirstOrDefault(f => f.IsFollower && f.VechicleId == followingVec && f.Enable);
if (isFollowing != null)
{
return;
}
var platoonLead = context.Platoon.AsQueryable().FirstOrDefault(f => f.IsLead && f.Enable);
if (platoonLead != null)
{
var platoon = new Platoon()
{
Enable = false,
ClientId = e.ClientId,
IsLead = false,
IsFollower = true,
VechicleId = followingVec,
PlatoonRealId = platoonLead.PlatoonRealId
};
context.Platoon.AddAsync(platoon);
Console.WriteLine($"[{DateTime.Now}] Join Platoon Client Id " + e.ClientId +
" platooning Id" + platoon.PlatoonRealId + " payload " + audit.Payload);
var message = new BitArray(_dataLenght);
message.Set(0, false);
message.Set(1, false);
message.Set(2, true);
Server.PublishAsync("platooning/" + platoonLead.ClientId + "/" + followingVec,
Encoding.ASCII.GetString(FunctionHelpers.BitArrayToByteArray(message)));
}
}
else if (payload.Maneuver == Maneuver.JoinAccepted)
{
Console.WriteLine($"[{DateTime.Now}] Join accepted Client Id " + e.ClientId + " payload " +
audit.Payload);
var splitTopic = e.ApplicationMessage.Topic.Split("/");
var followvehicleId = splitTopic[1];
var leadVehicle = splitTopic[2];
var plattonId = splitTopic[3];
var platoonfollow = context.Platoon.AsQueryable()
.FirstOrDefault(f => f.IsFollower && f.ClientId == followvehicleId);
if (platoonfollow != null)
{
platoonfollow.Enable = true;
platoonfollow.PlatoonRealId = plattonId;
context.Platoon.Update(platoonfollow);
}
else
{
var platoonlead = context.Platoon.AsQueryable()
.FirstOrDefault(f => f.IsLead && f.Enable && f.ClientId == leadVehicle);
if (platoonlead != null)
{
var platoon = new Platoon()
{
Enable = true,
ClientId = e.ClientId,
IsLead = false,
IsFollower = true,
VechicleId = followvehicleId,
PlatoonRealId = platoonlead.PlatoonRealId
};
context.Platoon.AddAsync(platoon);
}
}
}
else
{
var log = new Log
{
Exception = new string("Unknown Maneuver " +
JsonConvert.SerializeObject(payload, Formatting.Indented) + " " +
e.ClientId)
};
context.Log.AddAsync(log);
}
}
catch (Exception exception)
{
Console.WriteLine(exception);
var log = new Log
{
Exception = exception.StackTrace
};
context.Log.AddAsync(log);
context.SaveChanges();
}
context.SaveChanges();
OnDataReceived(e.ApplicationMessage.Payload);
//Console.WriteLine("Message Received");
//Console.WriteLine(e.ClientId + " " + e.ApplicationMessage.Topic);
//Console.WriteLine(e.ClientId + " " + e.ApplicationMessage.ConvertPayloadToString());
});
}