public async Task InterceptApplicationMessagePublishAsync(MqttApplicationMessageInterceptorContext context)
{
context.AcceptPublish = true;
if (context.ApplicationMessage == null)
{
return;
}
var payload = context.ApplicationMessage.Payload == null
? null
: Encoding.UTF8.GetString(context.ApplicationMessage?.Payload);
if (context.ApplicationMessage.Retain)
{
if (context.ApplicationMessage.Topic.StartsWith("mcu/"))
{
return;
}
var msg = _repo.AddMessage(new MqttMessage
{
Created = DateTime.Now,
Message = payload,
Topic = context.ApplicationMessage.Topic,
ContentType = context.ApplicationMessage.ContentType
});
await _repo.SaveChangesAsync();
}
// _logger.LogInformation(
// $"Message: ClientId = {context.ClientId}, Topic = {context.ApplicationMessage?.Topic},"
// + $" Payload = {payload}, QoS = {context.ApplicationMessage?.QualityOfServiceLevel},"
// + $" Retain-Flag = {context.ApplicationMessage?.Retain}");
}
public async Task InterceptApplicationMessagePublishAsync(MqttApplicationMessageInterceptorContext context)
{
//context.AcceptPublish = true;
if (context.ApplicationMessage == null)
{
return;
}
var payload = context.ApplicationMessage.Payload == null
? null
: Encoding.ASCII.GetString(context.ApplicationMessage?.Payload, 0, context.ApplicationMessage.Payload.Count());
if (payload == null)
{
_logger.LogError(
$"Payload is null Message: ClientId = {context.ClientId}, Topic = {context.ApplicationMessage?.Topic},"
+ $" Payload = {payload}, QoS = {context.ApplicationMessage?.QualityOfServiceLevel},"
+ $" Retain-Flag = {context.ApplicationMessage?.Retain}");
return;
}
var afterPars = Functions.GetPayload(context.ApplicationMessage?.Payload);
if (context.ApplicationMessage.Retain)
{
var msg = _repo.AddMessage(new MqttMessage
{
Created = DateTime.Now,
Message = JsonConvert.SerializeObject(afterPars, Formatting.Indented),
Topic = context.ApplicationMessage.Topic,
ContentType = context.ApplicationMessage.ContentType
});
//var tree = context.ApplicationMessage.Topic.Split('/');
if (await _repo.SaveChangesAsync())
{
context.AcceptPublish = true;
}
}
_logger.LogInformation(
$"Message: ClientId = {context.ClientId}, Topic = {context.ApplicationMessage?.Topic},"
+ $" Payload = {payload}, QoS = {context.ApplicationMessage?.QualityOfServiceLevel},"
+ $" Retain-Flag = {context.ApplicationMessage?.Retain}");
}
private async Task LogMessage(MqttConnectionValidatorContext context, bool newConnection = false,
bool showPassword = false)
{
if (context == null)
{
return;
}
if (newConnection)
{
var connection = new Connection
{
ClientId = context.ClientId,
CleanSession = context.CleanSession,
Endpoint = context.Endpoint,
Password = context.Password,
Username = context.Username
};
_repo.AddConnection(connection);
await _repo.SaveChangesAsync();
}
if (showPassword)
{
_logger.LogInformation(
$"New connection: ClientId = {context.ClientId}, Endpoint = {context.Endpoint},"
+ $" Username = {context.Username}, Password = {context.Password},"
+ $" CleanSession = {context.CleanSession}");
}
else
{
_logger.LogInformation(
$"New connection: ClientId = {context.ClientId}, Endpoint = {context.Endpoint},"
+ $" Username = {context.Username}, CleanSession = {context.CleanSession}");
}
}
public async Task StartAsync(
CancellationToken cancellationToken)
{
_appLifetime.ApplicationStarted.Register(OnStarted);
_appLifetime.ApplicationStopping.Register(OnStopping);
_appLifetime.ApplicationStopped.Register(OnStopped);
using var scope = _serviceProvider.CreateScope();
var serverBuilder = scope.ServiceProvider.GetRequiredService <IServerBuilder>();
var options = serverBuilder.GetOptionsBuilder(_interceptor, _messageInterceptor);
Server = serverBuilder.GetServer();
await Server.StartAsync(options.Build());
Server.StartedHandler = new MqttServerStartedHandlerDelegate(e =>
{
Console.WriteLine("Mqtt Broker start " + e);
});
Server.StoppedHandler = new MqttServerStoppedHandlerDelegate(e =>
{
Console.WriteLine("Mqtt Broker stop " + e);
});
Server.ClientSubscribedTopicHandler = new MqttServerClientSubscribedHandlerDelegate(e =>
{
var vehicleId = e.TopicFilter.Topic
.Replace("platooning/", "").Replace("/#", "");
_logger.LogInformation("Client subscribed " + e.ClientId + " topic " + e.TopicFilter.Topic + "Vehicle Id " +
vehicleId);
try
{
var audit = new Audit
{
ClientId = e.ClientId,
Type = "Sub",
Topic = e.TopicFilter.Topic,
Payload = JsonConvert.SerializeObject(e.TopicFilter, Formatting.Indented)
};
_repo.AddAudit(audit);
var sub = _repo.GetSubscribeByTopic(e.ClientId, e.TopicFilter.Topic,
e.TopicFilter.QualityOfServiceLevel.ToString());
if (sub != null)
{
_logger.LogInformation($"There is a subcribe like ClientID {e.ClientId}.");
return;
}
var subClient = new Subscribe
{
Topic = e.TopicFilter.Topic,
Enable = true,
ClientId = e.ClientId,
QoS = e.TopicFilter.QualityOfServiceLevel.ToString()
};
_repo.AddSubscribe(subClient);
}
catch (Exception exception)
{
var log = new Log
{
Exception = exception.StackTrace
};
_repo.AddLogAsync(log);
_logger.LogError("Error = MqttServerClientSubscribedHandlerDelegate ", exception.StackTrace);
}
finally
{
_repo.SaveChangesAsync(cancellationToken);
}
});
Server.ClientUnsubscribedTopicHandler = new MqttServerClientUnsubscribedTopicHandlerDelegate(e =>
{
try
{
var clientId = e.ClientId;
var topicFilter = e.TopicFilter;
_logger.LogInformation($"[{DateTime.Now}] Client '{clientId}' un-subscribed to {topicFilter}.");
try
{
var sub = _repo.GetSubscribeById(e.ClientId).Where(s => s.Topic == topicFilter);
var subscribes = sub as List <Subscribe> ?? sub.ToList();
if (subscribes.All(a => a.Topic != topicFilter))
{
return;
}
subscribes
.ForEach(a => a.Enable = false);
}
catch (Exception exception)
{
var log = new Log
{
Exception = exception.StackTrace
};
_repo.AddLogAsync(log);
_logger.LogError("Error = MqttServerClientSubscribedHandlerDelegate ", exception.StackTrace);
Console.WriteLine(exception);
}
}
catch (Exception ex)
{
Console.WriteLine($"[{DateTime.Now}] Client get error " + ex.Message);
}
finally
{
_repo.SaveChangesAsync(cancellationToken);
}
});
Server.ApplicationMessageReceivedHandler = new MqttApplicationMessageReceivedHandlerDelegate(e =>
{
try
{
var payload = Functions.GetPayload(e.ApplicationMessage.Payload);
var payloadser = JsonConvert.SerializeObject(payload, Formatting.Indented);
var tree = e.ApplicationMessage.Topic.Split('/');
var audit = new Audit
{
ClientId = e.ClientId,
Type = "Pub",
Topic = e.ApplicationMessage.Topic,
Payload = payloadser
};
_repo.AddAudit(audit);
if (e.ClientId == null)
{
var log = new Log
{
Exception = new string("Broker publish message itself " +
payloadser + " " +
e.ClientId)
};
_repo.AddLogAsync(log);
//_repo.SaveChangesAsync(cancellationToken);
return;
}
if (!tree.First().Contains("platooning"))
{
var log = new Log
{
Exception = new string("Mqtt broker just only response with starting \"platoon\" " +
payloadser + " " +
e.ClientId)
};
_repo.AddLogAsync(log);
//_repo.SaveChangesAsync(cancellationToken);
return;
}
if (payload.PlatoonDissolveStatus)
{
if (_repo.GetPlatoon().Any(a => a.ClientId == e.ClientId && a.IsLead))
{
Console.WriteLine(
$"[{DateTime.Now}] This is lead Vehicle PlatoonDissolveStatus is true all platoon infor must be deleted" +
" Client Id " + e.ClientId + " payload " +
payload);
var platoonlist = _repo.GetPlatoon().Where(a => a.IsFollower);
var platoonlistArray = platoonlist as Platoon[] ?? platoonlist.ToArray();
foreach (var platoon in platoonlistArray)
{
Server.UnsubscribeAsync(platoon.ClientId, "platooning/broadcast/" + platoon.PlatoonRealId);
Server.UnsubscribeAsync(platoon.ClientId, "platooning/" + platoon.ClientId);
}
_repo.DeletePlatoonRange(platoonlistArray);
}
else
{
Console.WriteLine(
$"[{DateTime.Now}] This is following Vehicle PlatoonDissolveStatus is true all platoon infor must be deleted" +
" Client Id " + e.ClientId + " payload " +
payload);
var followingVehicle = _repo.GetPlatoon().FirstOrDefault(a => a.IsFollower && a.ClientId == e.ClientId);
Server.UnsubscribeAsync(followingVehicle.ClientId, "platooning/" + followingVehicle.ClientId);
_repo.DeletePlatoon(followingVehicle);
}
}
if (payload.Maneuver == Maneuver.CreatePlatoon)
{
if (tree.Length != 4)
{
var log = new Log
{
Exception = new string("For creating platoon, topic must 4 length 1. \"platooning\" " +
" 2. \"message\" " +
" 3. \"leadvehicleID\" " +
" 4. \"platoonID\" " +
" payload " +
payloadser + " " +
" client ID " + e.ClientId +
" topic " + e.ApplicationMessage.Topic)
};
_repo.AddLogAsync(log);
//_repo.SaveChangesAsync(cancellationToken);
return;
}
var platoonId = tree[3];
var platoonList = _repo.GetPlatoon().ToList();
var leadVehicleId = tree[2];
var leadVehicle = _repo.GetSubscribeById(leadVehicleId);
var pla = platoonList
.FirstOrDefault(f => f.Enable && f.PlatoonRealId == platoonId);
if (leadVehicle != null && pla == null)
{
var platoon = new Platoon()
{
Enable = true,
ClientId = e.ClientId,
IsLead = true,
VechicleId = tree[2],
PlatoonRealId = tree[3]
};
_repo.AddPlatoon(platoon);
Console.WriteLine($"[{DateTime.Now}] Creating new Platoon Client Id " + e.ClientId +
" platooning Id" + platoon.PlatoonRealId + " payload " + payloadser);
}
else
{
Console.WriteLine($"[{DateTime.Now}] Platoon is already created Client Id " + e.ClientId +
" platooning Id" + platoonId + " payload " + payloadser);
}
}
else if (payload.Maneuver == Maneuver.JoinRequest)
{
if (tree.Length != 3)
{
var log = new Log
{
Exception = new string("For joining platoon, topic must 3 length 1. \"platooning\" " +
" 2. \"message\" " +
" 3. \"followingVehicleId\" " +
" 4. \"#\" " +
" payload " +
payloadser + " " +
" client ID " + e.ClientId +
" topic " + e.ApplicationMessage.Topic)
};
_repo.AddLogAsync(log);
//_repo.SaveChangesAsync();
return;
}
var isFollowing = _repo.GetPlatoon()
.FirstOrDefault(f => f.IsFollower && f.VechicleId == tree[2] && f.Enable);
if (isFollowing != null)
{
return;
}
var platoonLead = _repo.GetPlatoon().FirstOrDefault(f => f.IsLead && f.Enable);
if (platoonLead != null)
{
var platoon = new Platoon()
{
Enable = false,
ClientId = e.ClientId,
IsLead = false,
IsFollower = true,
VechicleId = tree[2],
PlatoonRealId = platoonLead.PlatoonRealId
};
_repo.AddPlatoon(platoon);
Console.WriteLine($"[{DateTime.Now}] Join Platoon Client Id " + e.ClientId +
" platooning Id" + platoon.PlatoonRealId + " payload " + payloadser);
var message = new BitArray(_dataLenght);
message.Set(0, false);
message.Set(1, false);
message.Set(2, true);
Server.PublishAsync("platooning/" + platoonLead.ClientId + "/" + tree[2],
Encoding.ASCII.GetString(Functions.BitArrayToByteArray(message)));
}
}
else if (payload.Maneuver == Maneuver.JoinAccepted)
{
Console.WriteLine($"[{DateTime.Now}] Join accepted Client Id " + e.ClientId + " payload " +
payloadser);
var followvehicleId = tree[1];
var leadVehicle = tree[2];
var plattonId = tree[3];
var allplatoon = _repo.GetPlatoon();
if (allplatoon != null)
{
var enumerable = allplatoon as Platoon[] ?? allplatoon.ToArray();
var platoonfollow = enumerable.FirstOrDefault(f => f.IsFollower && f.ClientId == followvehicleId);
if (platoonfollow != null)
{
platoonfollow.Enable = true;
platoonfollow.PlatoonRealId = plattonId;
_repo.UpdatePlatoon(platoonfollow);
}
else
{
var platoonlead = enumerable
.FirstOrDefault(f => f.IsLead && f.Enable && f.ClientId == leadVehicle);
if (platoonlead != null)
{
var platoon = new Platoon()
{
Enable = true,
ClientId = e.ClientId,
IsLead = false,
IsFollower = true,
VechicleId = followvehicleId,
PlatoonRealId = platoonlead.PlatoonRealId
};
_repo.AddPlatoon(platoon);
}
}
}
}
else if (payload.Maneuver == Maneuver.JoinRejected)
{
Console.WriteLine($"[{DateTime.Now}] Join rejected Client Id " + e.ClientId + " payload " +
payloadser);
var platoonfollow = _repo.GetPlatoon()
.FirstOrDefault(f => f.IsFollower && f.ClientId == tree[1]);
if (platoonfollow != null)
{
_repo.DeletePlatoon(platoonfollow);
}
}
else
{
var log = new Log
{
Exception = new string("Unknown Maneuver " +
payloadser + " " +
e.ClientId)
};
_repo.AddLogAsync(log);
}
}
catch (Exception exception)
{
Console.WriteLine(exception);
var log = new Log
{
Exception = exception.StackTrace
};
_repo.AddLogAsync(log);
}
finally
{
_repo.SaveChangesAsync(cancellationToken);
}
OnDataReceived(e.ApplicationMessage.Payload);
});
}
private async void InsertValues(
object state)
{
if (_running)
{
_logger.LogInformation(4444, $"Job is already running");
return;
}
_running = true;
var lastTimestamp = _repository.LastTimestamp();
var currentTimestamp = lastTimestamp.AddMinutes(1);
while (currentTimestamp < DateTime.Now.CutSeconds())
{
_ = _repository.AddTimestamp(currentTimestamp.CutSeconds());
currentTimestamp = currentTimestamp.AddMinutes(1);
}
_ = await _repository.SaveChangesAsync();
var targets = new List <MeasureValue>();
var delete = new List <MqttMessage>();
// Filter relevant messages
var messages =
await _repository
.GetMessagesAsQueryable()
.Where(msg => !msg.Topic.EndsWith("neo7m"))
.OrderBy(msg => msg.Created)
.ToListAsync();
foreach (var message in messages)
{
if (!double.TryParse(message.Message, out var v))
{
delete.Add(message);
continue;
}
var fields = message.Topic.Split('/');
if (fields.Length != 4)
{
delete.Add(message);
continue;
}
var tmpTimestamp = message.Created.CutSeconds();
var timestamp = _repository.GetTimestamp(tmpTimestamp);
if (timestamp == null)
{
_logger.LogInformation($"Timestamp {tmpTimestamp.ToString()} not exist");
continue;
}
var room = _repository.GetRoom(fields[1]);
var measureType = _repository.GetMeasureType(fields[2]);
var sensorType = _repository.GetSensorType(fields[3]);
if (room == null && measureType == null && sensorType == null)
{
_logger.LogError(6666, $"Error with types");
continue;
}
var value = new MeasureValue
{
MeasureTimeTimestamp = timestamp.Timestamp,
SensorTypeName = sensorType.Name,
RoomName = room?.Name,
MeasureTypeName = measureType?.Name,
Value = v
};
if (targets.FirstOrDefault(
msg =>
msg.RoomName == value.RoomName &&
msg.SensorTypeName == value.SensorTypeName &&
msg.MeasureTypeName == value.MeasureTypeName &&
msg.MeasureTimeTimestamp == value.MeasureTimeTimestamp) != null)
{
_logger.LogError(4444, $"Value are duplicate in MqttMessages");
delete.Add(message);
continue;
}
targets.Add(value);
delete.Add(message);
}
foreach (var target in targets)
{
if (!_repository.MeasureExists(
target.RoomName,
target.MeasureTypeName,
target.SensorTypeName,
target.MeasureTimeTimestamp))
{
_repository.AddMeasureValue(target);
}
}
foreach (var dMessage in delete)
{
_repository.DeleteMessage(dMessage);
}
_ = await _repository.SaveChangesAsync();
_running = false;
}