ceph/src/mds/SnapClient.h

   1 // -*- mode:C++; tab-width:8; c-basic-offset:2; indent-tabs-mode:t -*-
   2 // vim: ts=8 sw=2 smarttab
   3 /*
   4  * Ceph - scalable distributed file system
   5  *
   6  * Copyright (C) 2004-2006 Sage Weil <sage@newdream.net>
   7  *
   8  * This is free software; you can redistribute it and/or
   9  * modify it under the terms of the GNU Lesser General Public
  10  * License version 2.1, as published by the Free Software
  11  * Foundation.  See file COPYING.
  12  *
  13  */
  14
  15 #ifndef CEPH_SNAPCLIENT_H
  16 #define CEPH_SNAPCLIENT_H
  17
  18 #include <boost/utility/string_view.hpp>
  19
  20 #include "MDSTableClient.h"
  21 #include "snap.h"
  22
  23 class MDSInternalContextBase;
  24 class MDSRank;
  25 class LogSegment;
  26
  27 class SnapClient : public MDSTableClient {
  28 public:
  29   explicit SnapClient(MDSRank *m) : MDSTableClient(m, TABLE_SNAP) {}
  30
  31   void resend_queries() override {}
  32   void handle_query_result(MMDSTableRequest *m) override {}
  33
  34   void prepare_create(inodeno_t dirino, boost::string_view name, utime_t stamp,
  35                       version_t *pstid, bufferlist *pbl, MDSInternalContextBase *onfinish) {
  36     bufferlist bl;
  37     __u32 op = TABLE_OP_CREATE;
  38     ::encode(op, bl);
  39     ::encode(dirino, bl);
  40     ::encode(name, bl);
  41     ::encode(stamp, bl);
  42     _prepare(bl, pstid, pbl, onfinish);
  43   }
  44
  45   void prepare_create_realm(inodeno_t ino, version_t *pstid, bufferlist *pbl, MDSInternalContextBase *onfinish) {
  46     bufferlist bl;
  47     __u32 op = TABLE_OP_CREATE;
  48     ::encode(op, bl);
  49     ::encode(ino, bl);
  50     _prepare(bl, pstid, pbl, onfinish);
  51   }
  52
  53   void prepare_destroy(inodeno_t ino, snapid_t snapid, version_t *pstid, bufferlist *pbl, MDSInternalContextBase *onfinish) {
  54     bufferlist bl;
  55     __u32 op = TABLE_OP_DESTROY;
  56     ::encode(op, bl);
  57     ::encode(ino, bl);
  58     ::encode(snapid, bl);
  59     _prepare(bl, pstid, pbl, onfinish);
  60   }
  61
  62   void prepare_update(inodeno_t ino, snapid_t snapid, boost::string_view name, utime_t stamp,
  63                       version_t *pstid, bufferlist *pbl, MDSInternalContextBase *onfinish) {
  64     bufferlist bl;
  65     __u32 op = TABLE_OP_UPDATE;
  66     ::encode(op, bl);
  67     ::encode(ino, bl);
  68     ::encode(snapid, bl);
  69     ::encode(name, bl);
  70     ::encode(stamp, bl);
  71     _prepare(bl, pstid, pbl, onfinish);
  72   }
  73 };
  74
  75 #endif