From ca992f4f76d09965e4e62c805daa02b23266a224 Mon Sep 17 00:00:00 2001
From: Felix Morgner <felix.morgner@gmail.com>
Date: Thu, 29 Nov 2018 18:29:34 +0100
Subject: control: begin control interface implementation

---
 src/control_connection.hpp | 76 ++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 76 insertions(+)
 create mode 100644 src/control_connection.hpp

(limited to 'src/control_connection.hpp')

diff --git a/src/control_connection.hpp b/src/control_connection.hpp
new file mode 100644
index 0000000..e868f99
--- /dev/null
+++ b/src/control_connection.hpp
@@ -0,0 +1,76 @@
+#ifndef WANDA_CONTROL_CONNECTION_HPP
+#define WANDA_CONTROL_CONNECTION_HPP
+
+#include "keyed.hpp"
+
+#include <boost/asio.hpp>
+
+#include <memory>
+#include <set>
+#include <string>
+
+namespace wanda
+{
+
+struct control_connection : keyed<control_connection>, std::enable_shared_from_this<control_connection>
+{
+    using protocol = boost::asio::local::stream_protocol;
+    using pointer = std::shared_ptr<control_connection>;
+
+    struct listener
+    {
+        virtual void on_close(pointer connection) {}
+        virtual void on_received(pointer connection, std::string message) {}
+        virtual void on_error(pointer connection, boost::system::error_code) {}
+    };
+
+    /**
+     * @internal
+     * @brief Construct a new control connection object
+     * 
+     * @param socket The socket connected to the remote control endpoint
+     */
+    control_connection(key, protocol::socket socket);
+
+    /**
+     * @brief Add the given listener to this control connection's listener set
+     * 
+     * @returns <code>true</code> iff. the listener was not already in the listener set
+     */
+    bool add(std::shared_ptr<listener> listener);
+
+    /**
+     * @brief Remove the given listener from this control connection's listener set
+     * 
+     * @return <code>true</code> iff. the listener was previously registered with this control connection
+     */
+    bool remove(std::shared_ptr<listener> listener);
+
+    /**
+     * @brief Start I/O processing for this control connection
+     */
+    void start();
+
+    /**
+     * @brief Close this control connection
+     */
+    void close();
+
+  private:
+    friend pointer make_control_connection(protocol::socket &&socket);
+
+    void perform_read();
+
+    protocol::socket m_socket;
+    boost::asio::streambuf m_in{};
+    boost::asio::streambuf m_out{};
+    std::istream m_input{&m_in};
+    std::set<std::shared_ptr<listener>> m_listeners{};
+    bool m_running{};
+};
+
+control_connection::pointer make_control_connection(control_connection::protocol::socket &&socket);
+
+} // namespace wanda
+
+#endif
\ No newline at end of file
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