1 files changed, 154 insertions, 0 deletions
diff --git a/src/mds/OpenFileTable.h b/src/mds/OpenFileTable.h
new file mode 100644
index 000000000..1f91c2020
--- /dev/null
+++ b/src/mds/OpenFileTable.h
@@ -0,0 +1,154 @@
+// -*- 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) 2018 Red Hat
+ *
+ * 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 OPEN_FILE_TABLE_H
+#define OPEN_FILE_TABLE_H
+
+#include "mdstypes.h"
+#include "Anchor.h"
+
+#include "MDSContext.h"
+
+class CDir;
+class CInode;
+class MDSRank;
+
+struct ObjectOperation;
+
+class OpenFileTable
+{
+public:
+  explicit OpenFileTable(MDSRank *m);
+  ~OpenFileTable();
+
+  void add_inode(CInode *in);
+  void remove_inode(CInode *in);
+  void add_dirfrag(CDir *dir);
+  void remove_dirfrag(CDir *dir);
+  void notify_link(CInode *in);
+  void notify_unlink(CInode *in);
+  bool is_any_dirty() const { return !dirty_items.empty(); }
+
+  void commit(MDSContext *c, uint64_t log_seq, int op_prio);
+  uint64_t get_committed_log_seq() const { return committed_log_seq; }
+  bool is_any_committing() const { return num_pending_commit > 0; }
+
+  void load(MDSContext *c);
+  bool is_loaded() const { return load_done; }
+  void wait_for_load(MDSContext *c) {
+    ceph_assert(!load_done);
+    waiting_for_load.push_back(c);
+  }
+
+  bool prefetch_inodes();
+  bool is_prefetched() const { return prefetch_state == DONE; }
+  void wait_for_prefetch(MDSContext *c) {
+    ceph_assert(!is_prefetched());
+    waiting_for_prefetch.push_back(c);
+  }
+
+  bool should_log_open(CInode *in);
+
+  void note_destroyed_inos(uint64_t seq, const std::vector<inodeno_t>& inos);
+  void trim_destroyed_inos(uint64_t seq);
+
+protected:
+  friend class C_IO_OFT_Recover;
+  friend class C_IO_OFT_Load;
+  friend class C_IO_OFT_Save;
+  friend class C_IO_OFT_Journal;
+  friend class C_OFT_OpenInoFinish;
+
+  uint64_t MAX_ITEMS_PER_OBJ = g_conf().get_val<uint64_t>("osd_deep_scrub_large_omap_object_key_threshold");
+  static const unsigned MAX_OBJECTS = 1024; // (1024 * osd_deep_scrub_large_omap_object_key_threshold) items at most
+
+  static const int DIRTY_NEW	= -1;
+  static const int DIRTY_UNDEF	= -2;
+
+  unsigned num_pending_commit = 0;
+  void _encode_header(bufferlist& bl, int j_state);
+  void _commit_finish(int r, uint64_t log_seq, MDSContext *fin);
+  void _journal_finish(int r, uint64_t log_seq, MDSContext *fin,
+		       std::map<unsigned, std::vector<ObjectOperation> >& ops);
+
+  void get_ref(CInode *in, frag_t fg=-1U);
+  void put_ref(CInode *in, frag_t fg=-1U);
+
+  object_t get_object_name(unsigned idx) const;
+
+  void _reset_states() {
+    omap_num_objs = 0;
+    omap_num_items.resize(0);
+    journal_state = JOURNAL_NONE;
+    loaded_journals.clear();
+    loaded_anchor_map.clear();
+  }
+  void _read_omap_values(const std::string& key, unsigned idx, bool first);
+  void _load_finish(int op_r, int header_r, int values_r,
+		    unsigned idx, bool first, bool more,
+                    bufferlist &header_bl,
+		    std::map<std::string, bufferlist> &values);
+  void _recover_finish(int r);
+
+  void _open_ino_finish(inodeno_t ino, int r);
+  void _prefetch_inodes();
+  void _prefetch_dirfrags();
+
+  void _get_ancestors(const Anchor& parent,
+		      std::vector<inode_backpointer_t>& ancestors,
+		      mds_rank_t& auth_hint);
+
+  MDSRank *mds;
+
+  version_t omap_version = 0;
+
+  unsigned omap_num_objs = 0;
+  std::vector<unsigned> omap_num_items;
+
+  std::map<inodeno_t, OpenedAnchor> anchor_map;
+
+  std::map<inodeno_t, int> dirty_items; // ino -> dirty state
+
+  uint64_t committed_log_seq = 0;
+  uint64_t committing_log_seq = 0;
+
+  enum {
+    JOURNAL_NONE = 0,
+    JOURNAL_START = 1,
+    JOURNAL_FINISH = 2,
+  };
+  int journal_state = 0;
+
+  std::vector<std::map<std::string, bufferlist> > loaded_journals;
+  std::map<inodeno_t, RecoveredAnchor> loaded_anchor_map;
+  MDSContext::vec waiting_for_load;
+  bool load_done = false;
+
+  enum {
+    DIR_INODES = 1,
+    DIRFRAGS = 2,
+    FILE_INODES = 3,
+    DONE = 4,
+  };
+  unsigned prefetch_state = 0;
+  unsigned num_opening_inodes = 0;
+  MDSContext::vec waiting_for_prefetch;
+
+  std::map<uint64_t, std::vector<inodeno_t> > logseg_destroyed_inos;
+  std::set<inodeno_t> destroyed_inos_set;
+
+  std::unique_ptr<PerfCounters> logger;
+};
+
+#endif