internal void InitNewThread(NetworkStream subNetworkStream, Guid connectionID)
{
try {
SendConnectionConfirmation();
while (IsBrokerAlive)
{
MessagePacket packet = JsonConvert.DeserializeObject <MessagePacket>(subNetworkStream.ReadAllDataAsString());
if (packet.PacketType == PacketTypes.Disconnect)
{
Console.WriteLine($"Connection with client of ID '{connectionID}' has dropped.");
TopicManagerInstance.UnsubscibeFromAll(subNetworkStream);
return;
}
else if (packet.PacketType == PacketTypes.ListTopics)
{
SendTopicList();
}
else if (packet.PacketType == PacketTypes.SubToTopic)
{
HandleSubToTopic(packet);
}
else if (packet.PacketType == PacketTypes.UnsubFromTopic)
{
HandleUnsubFromTopic(packet);
}
}
SendBrokerShutdownMessage();
TopicManagerInstance.UnsubscibeFromAll(subNetworkStream);
}
catch (Exception e) { HandleConnectionException(e, connectionID); }
}
private void HandleUnsubFromTopic(MessagePacket packet)
{
string topicName = packet.Data[0];
if (TopicManagerInstance.UnsubscribeFromTopic(topicName, HandlerNetworkStream))
{
SendMessage(new MessagePacket(PacketTypes.PrintData, new string[] {
$"You have successfully unsubscribed from the topic '{topicName}'"
}));
Console.WriteLine($"Subscriber '{ConnectionID}' has unsubscribed from the topic '{topicName}'");
}
else
{
SendMessage(new MessagePacket(PacketTypes.PrintData, new string[] {
$"You have failed to unsubscribed from the topic '{topicName}'. This is because the topic doesn't exist."
}));
Console.WriteLine($"Subscriber '{ConnectionID}' tried to unsubscribed from the topic '{topicName}', but it didn't exist.");
}
}
private void HandleDeleteTopic(MessagePacket packet)
{
string topicName = packet.Data[0];
if (TopicManagerInstance.RemoveTopic(ConnectionID, topicName))
{
SendMessage(new MessagePacket(PacketTypes.PrintData, new string[] {
$"Topic of name '{topicName}' has been successfully deleted."
}));
Console.WriteLine($"Publisher '{ConnectionID}' has deleted the topic '{topicName}'");
}
else
{
SendMessage(new MessagePacket(PacketTypes.PrintData, new string[] {
$"Topic of name '{topicName}' could not be deleted. Either it doesn't exist or you do not own the topic."
}));
Console.WriteLine($"Publisher '{ConnectionID}' tried to delete the topic '{topicName}'. Either it doesn't exist or they do not own the topic.");
}
}
private void HandleCreateTopic(MessagePacket packet)
{
string topicName = packet.Data[0];
if (TopicManagerInstance.CreateTopic(ConnectionID, topicName))
{
SendMessage(new MessagePacket(PacketTypes.PrintData, new string[] {
$"Topic of name '{topicName}' has been successfully created."
}));
Console.WriteLine($"Publisher '{ConnectionID}' has created the topic '{topicName}'");
}
else
{
SendMessage(new MessagePacket(PacketTypes.PrintData, new string[] {
$"Topic of name '{topicName}' has failed to be created by the broker. Make sure that the topic doesn't already exist."
}));
Console.WriteLine($"Publisher '{ConnectionID}' has tried to create the topic '{topicName}' but the broker has failed.");
}
}
private void HandleTopicMessage(MessagePacket packet)
{
string topicName = packet.Data[0];
string topicMessage = packet.Data[1];
if (TopicManagerInstance.SendMessage(ConnectionID, topicName, topicMessage))
{
SendMessage(new MessagePacket(PacketTypes.PrintData, new string[] {
$"You have published the message '{topicMessage}' to the topic '{topicName}'"
}));
Console.WriteLine($"Publisher '{ConnectionID}' has sent the message '{topicMessage}' to the topic '{topicName}'");
}
else
{
SendMessage(new MessagePacket(PacketTypes.PrintData, new string[] {
$"Could not send a message to the topic '{topicName}'. Either it doesn't exist or you do not own the topic."
}));
Console.WriteLine($"Publisher '{ConnectionID}' tried to send a message to '{topicName}', but it failed");
}
}
internal void InitNewThread(NetworkStream pubNetworkStream, Guid connectionID)
{
HandlerNetworkStream = pubNetworkStream;
ConnectionID = connectionID;
try {
SendConnectionConfirmation();
while (IsBrokerAlive)
{
MessagePacket packet = JsonConvert.DeserializeObject <MessagePacket>(pubNetworkStream.ReadAllDataAsString());
if (packet.PacketType == PacketTypes.Disconnect)
{
Console.WriteLine($"Connection with client of ID '{connectionID}' has been closed by the client.");
TopicManagerInstance.RemoveAllTopicsFromPublisher(connectionID);
return;
}
else if (packet.PacketType == PacketTypes.ListTopics)
{
SendTopicList();
}
else if (packet.PacketType == PacketTypes.CreateTopic)
{
HandleCreateTopic(packet);
}
else if (packet.PacketType == PacketTypes.DeleteTopic)
{
HandleDeleteTopic(packet);
}
else if (packet.PacketType == PacketTypes.TopicMessage)
{
HandleTopicMessage(packet);
}
}
SendBrokerShutdownMessage();
TopicManagerInstance.RemoveAllTopicsFromPublisher(connectionID);
}
catch (Exception e) { HandleConnectionException(e, connectionID); }
}
