MDEV-26851 : Add interface to monitor connections in Galera

2025-07-28 20:02:00 +03:00 · 2024-08-08 10:46:55 +03:00
parent 2d7b357e60
commit b8e0540e7a
8 changed files with 309 additions and 4 deletions
--- a/include/wsrep/connection_monitor_service.hpp
+++ b/include/wsrep/connection_monitor_service.hpp
@ -0,0 +1,71 @@
+/*
+ * Copyright (C) 2024-2025 Codership Oy <info@codership.com>
+ *
+ * This file is part of wsrep-lib.
+ *
+ * Wsrep-lib is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * Wsrep-lib is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with wsrep-lib.  If not, see <https://www.gnu.org/licenses/>.
+ */
+
+
+/** @file connection_monitor_service.hpp
+ *
+ * Service interface for interacting with DBMS provided
+ * connection monitor callback.
+ */
+
+#ifndef WSREP_CONNECTION_MONITOR_SERVICE_HPP
+#define WSREP_CONNECTION_MONITOR_SERVICE_HPP
+
+#include "compiler.hpp"
+#include "wsrep/buffer.hpp"
+
+/* Type tag for connection key. */
+typedef const void* wsrep_connection_key_t;
+
+namespace wsrep
+{
+    class connection_monitor_service
+    {
+    public:
+
+        virtual ~connection_monitor_service() { }
+
+        /**
+         * Connection monitor connect callback.
+         */
+        virtual bool connection_monitor_connect_cb(
+                                                   wsrep_connection_key_t id,
+                                                   const wsrep::const_buffer& scheme,
+                                                   const wsrep::const_buffer& local_addr,
+                                                   const wsrep::const_buffer& remote_addr
+                                                  ) WSREP_NOEXCEPT = 0;
+        /**
+         * Connection monitor disconnect callback.
+         */
+        virtual bool connection_monitor_disconnect_cb(wsrep_connection_key_t id
+                                                     ) WSREP_NOEXCEPT=0;
+
+        /**
+         * Connection monitor SSL/TLS info callback.
+         */
+        virtual bool connection_monitor_ssl_info_cb(wsrep_connection_key_t id,
+                                                    const wsrep::const_buffer& ciper,
+                                                    const wsrep::const_buffer& subject,
+                                                    const wsrep::const_buffer& issuer,
+                                                    const wsrep::const_buffer& version
+                                                   ) WSREP_NOEXCEPT = 0;
+    };
+}
+
+#endif // WSREP_CONNECTION_MONITOR_SERVICE_HPP