Initial commit of source code

src/dBus/node.h

@@ -0,0 +1,57 @@
+#pragma once
+
+#include "Message.h"
+#include "defs.h"
+
+#include <mutex>
+#include <queue>
+
+namespace dBus
+{
+class Bus;
+//--------------------------------------------------------------
+class Node
+{
+  friend class Bus;
+
+  public:
+  Node() = delete;                                   // Default constructor
+  virtual ~Node();                                   // Default destructor
+  Node(const Node &obj)                = delete;     // Copy constructor
+  Node(Node &&obj) noexcept            = delete;     // Move constructor
+  Node &operator=(const Node &obj)     = delete;     // Copy assignment operator
+  Node &operator=(Node &&obj) noexcept = delete;     // Move assignment operator
+
+  explicit Node(Bus &bus);     // Constructor
+
+  // Event subscription management
+  void               subscribe(const HashID &eventType);              // Subscribe to a specific message type
+  void               unsubscribe(const HashID &eventType);            // Unsubscribe from a specific message type
+  void               unsubscribeAll();                                // Unsubscribe from all message types
+  [[nodiscard]] bool isSubscribed(const HashID &eventType) const;     // Check if is subscribed to a specific message type
+
+  void syncWaitForMessage();     // Wait for a message to be received
+
+  // Data transmission
+  void postMessage(const std::shared_ptr<Message> &message) const;     // Post a message to the bus
+
+  [[nodiscard]] std::chrono::microseconds getMessageMaxAge() const;     // Get the maximum age of messages in the queue
+  [[nodiscard]] size_t                    getMessageCount() const;      // Get the number of received messages
+  [[nodiscard]] std::shared_ptr<Message>  popNextMessage();             // Get the next message from the queue
+
+  protected:
+  virtual void receiveMessageFromBus(std::shared_ptr<Message> message);     // Receive a message from the bus (to be called by the bus when a message is posted)
+  void         notifyMessageQueue();                                        // Notify the node of a new message from the bus
+
+  Bus &m_bus;     // Reference to the bus this node is connected to
+
+  std::atomic_bool m_nodeWaitFlag = false;     // Flag to control the node thread loop
+
+  struct
+  {
+    mutable std::mutex                   mtx;              // Mutex for thread-safe access to the event queue
+    std::queue<std::shared_ptr<Message>> messageQueue;     // Queue of received events
+  } m_dBusMessages;
+};
+//--------------------------------------------------------------
+}     // namespace dBus