Adding upstream version 18.2.2.upstream/18.2.2

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

1 files changed, 91 insertions, 0 deletions

diff --git a/src/mds/MDSTable.h b/src/mds/MDSTable.h
new file mode 100644
index 000000000..daa745ce8
--- /dev/null
+++ b/src/mds/MDSTable.h
@@ -0,0 +1,91 @@
+// -*- mode:C++; tab-width:8; c-basic-offset:2; indent-tabs-mode:t -*- 
+// vim: ts=8 sw=2 smarttab
+/*
+ * Ceph - scalable distributed file system
+ *
+ * Copyright (C) 2004-2006 Sage Weil <sage@newdream.net>
+ *
+ * This is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License version 2.1, as published by the Free Software 
+ * Foundation.  See file COPYING.
+ * 
+ */
+
+#ifndef CEPH_MDSTABLE_H
+#define CEPH_MDSTABLE_H
+
+#include "mdstypes.h"
+#include "mds_table_types.h"
+#include "include/buffer_fwd.h"
+
+#include "MDSContext.h"
+
+class MDSRank;
+
+class MDSTable {
+public:
+  friend class C_IO_MT_Load;
+  friend class C_IO_MT_Save;
+
+  MDSTable(MDSRank *m, std::string_view n, bool is_per_mds) :
+    mds(m), table_name(n), per_mds(is_per_mds) {}
+  virtual ~MDSTable() {}
+
+  void set_rank(mds_rank_t r)
+  {
+    rank = r;
+  }
+
+  version_t get_version() const { return version; }
+  version_t get_committed_version() const { return committed_version; }
+  version_t get_committing_version() const { return committing_version; }
+  version_t get_projected_version() const { return projected_version; }
+  
+  void force_replay_version(version_t v) {
+    version = projected_version = v;
+  }
+
+  //version_t project_version() { return ++projected_version; }
+  //version_t inc_version() { return ++version; }
+
+  // load/save from disk (hack)
+  bool is_undef() const { return state == STATE_UNDEF; }
+  bool is_active() const { return state == STATE_ACTIVE; }
+  bool is_opening() const { return state == STATE_OPENING; }
+
+  void reset();
+  void save(MDSContext *onfinish=0, version_t need=0);
+  void save_2(int r, version_t v);
+
+  void shutdown() {
+    if (is_active()) save(0);
+  }
+
+  object_t get_object_name() const;
+  void load(MDSContext *onfinish);
+  void load_2(int, bufferlist&, Context *onfinish);
+
+  // child must overload these
+  virtual void reset_state() = 0;
+  virtual void decode_state(bufferlist::const_iterator& p) = 0;
+  virtual void encode_state(bufferlist& bl) const = 0;
+
+  MDSRank *mds;
+protected:
+  static const int STATE_UNDEF   = 0;
+  static const int STATE_OPENING = 1;
+  static const int STATE_ACTIVE  = 2;
+  //static const int STATE_COMMITTING = 3;
+
+  std::string table_name;
+  bool per_mds;
+  mds_rank_t rank = MDS_RANK_NONE;
+
+  int state = STATE_UNDEF;
+
+  version_t version = 0, committing_version = 0, committed_version = 0, projected_version = 0;
+
+  std::map<version_t, MDSContext::vec > waitfor_save;
+};
+#endif