Adding upstream version 1:10.11.6.upstream/1%10.11.6upstream

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 171 insertions, 0 deletions

diff --git a/wsrep-lib/include/wsrep/view.hpp b/wsrep-lib/include/wsrep/view.hpp
new file mode 100644
index 00000000..d17c27f1
--- /dev/null
+++ b/wsrep-lib/include/wsrep/view.hpp
@@ -0,0 +1,171 @@
+/*
+ * Copyright (C) 2018 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 view.hpp
+ *
+ *
+ */
+
+
+#ifndef WSREP_VIEW_HPP
+#define WSREP_VIEW_HPP
+
+#include "id.hpp"
+#include "seqno.hpp"
+#include "gtid.hpp"
+#include <vector>
+#include <iostream>
+
+namespace wsrep
+{
+    class view
+    {
+    public:
+        enum status
+        {
+            primary,
+            non_primary,
+            disconnected
+        };
+        class member
+        {
+        public:
+            member(const wsrep::id& id,
+                   const std::string& name,
+                   const std::string& incoming)
+                : id_(id)
+                , name_(name)
+                , incoming_(incoming)
+            {
+            }
+            const wsrep::id& id() const { return id_; }
+            const std::string& name() const { return name_; }
+            const std::string& incoming() const { return incoming_; }
+        private:
+            wsrep::id id_;
+            std::string name_;
+            std::string incoming_;
+        };
+
+        view()
+            : state_id_()
+            , view_seqno_()
+            , status_(disconnected)
+            , capabilities_()
+            , own_index_(-1)
+            , protocol_version_(0)
+            , members_()
+        { }
+        view(const wsrep::gtid& state_id,
+             wsrep::seqno view_seqno,
+             enum wsrep::view::status status,
+             int capabilities,
+             ssize_t own_index,
+             int protocol_version,
+             const std::vector<wsrep::view::member>& members)
+            : state_id_(state_id)
+            , view_seqno_(view_seqno)
+            , status_(status)
+            , capabilities_(capabilities)
+            , own_index_(own_index)
+            , protocol_version_(protocol_version)
+            , members_(members)
+        { }
+
+        wsrep::gtid state_id() const
+        { return state_id_; }
+
+        wsrep::seqno view_seqno() const
+        { return view_seqno_; }
+
+        wsrep::view::status status() const
+        { return status_; }
+
+        int capabilities() const
+        { return capabilities_; }
+
+        ssize_t own_index() const
+        { return own_index_; }
+
+        /**
+         * Return true if the two views have the same membership
+         */
+        bool equal_membership(const wsrep::view& other) const;
+
+        int protocol_version() const
+        { return protocol_version_; }
+
+        const std::vector<member>& members() const
+        { return members_; }
+
+        /**
+         * Return true if the view is final
+         */
+        bool final() const
+        {
+            return (members_.empty() && own_index_ == -1);
+        }
+
+        /**
+         * Return member index in the view.
+         *
+         * @return Member index if found, -1 if member is not present
+         *         in the view.
+         */
+        int member_index(const wsrep::id& member_id) const;
+
+        /**
+         * Return true if id is member of this view
+         */
+        bool is_member(const wsrep::id& id) const
+        {
+            return member_index(id) != -1;
+        }
+
+        void print(std::ostream& os) const;
+
+    private:
+        wsrep::gtid state_id_;
+        wsrep::seqno view_seqno_;
+        enum wsrep::view::status status_;
+        int capabilities_;
+        ssize_t own_index_;
+        int protocol_version_;
+        std::vector<wsrep::view::member> members_;
+    };
+
+    static inline
+    std::ostream& operator<<(std::ostream& os, const wsrep::view& v)
+    {
+        v.print(os); return os;
+    }
+
+    static inline const char* to_c_string(enum wsrep::view::status status)
+    {
+        switch(status)
+        {
+        case wsrep::view::primary:      return "primary";
+        case wsrep::view::non_primary:  return "non-primary";
+        case wsrep::view::disconnected: return "disconnected";
+        }
+        return "invalid status";
+    }
+}
+
+#endif // WSREP_VIEW