Refactoring dbms simulator. Intermediate commit.

dbsim/db_simulator.hpp

@@ -0,0 +1,65 @@
+//
+// Copyright (C) 2018 Codership Oy <info@codership.com>
+//
+
+#ifndef WSREP_DB_SIMULATOR_HPP
+#define WSREP_DB_SIMULATOR_HPP
+
+#include <memory>
+#include <chrono>
+#include <unordered_set>
+
+#include "db_params.hpp"
+
+namespace db
+{
+    class server;
+
+    class simulator
+    {
+    public:
+        simulator(const params& params)
+            : mutex_()
+            , params_(params)
+            , servers_()
+            , clients_start_()
+            , clients_stop_()
+            , stats_()
+        { }
+
+        void start();
+        void stop();
+        void donate_sst(server&,
+                        const std::string& req, const wsrep::gtid& gtid, bool);
+        const simulator_params& params() const
+        { return params_; }
+        std::string stats() const;
+    private:
+        std::string server_port(size_t i) const
+        {
+            std::ostringstream os;
+            os << (10000 + (i + 1)*10);
+            return os.str();
+        }
+        std::string build_cluster_address() const;
+
+        wsrep::default_mutex mutex_;
+        const simulator_params& params_;
+        std::map<size_t, std::unique_ptr<server>> servers_;
+        std::chrono::time_point<std::chrono::steady_clock> clients_start_;
+        std::chrono::time_point<std::chrono::steady_clock> clients_stop_;
+    public:
+        struct stats
+        {
+            long long commits;
+            long long aborts;
+            long long replays;
+            stats()
+                : commits(0)
+                , aborts(0)
+                , replays(0)
+            { }
+        } stats_;
+    };
+}
+#endif // WSRE_DB_SIMULATOR_HPP