ceph/src/client/ObjecterWriteback.h

   1 // -*- mode:C++; tab-width:8; c-basic-offset:2; indent-tabs-mode:t -*-
   2 // vim: ts=8 sw=2 smarttab
   3 #ifndef CEPH_OSDC_OBJECTERWRITEBACKHANDLER_H
   4 #define CEPH_OSDC_OBJECTERWRITEBACKHANDLER_H
   5
   6 #include "osdc/Objecter.h"
   7 #include "osdc/WritebackHandler.h"
   8
   9 class ObjecterWriteback : public WritebackHandler {
  10  public:
  11   ObjecterWriteback(Objecter *o, Finisher *fin, Mutex *lock)
  12     : m_objecter(o),
  13       m_finisher(fin),
  14       m_lock(lock) { }
  15   ~ObjecterWriteback() override {}
  16
  17   void read(const object_t& oid, uint64_t object_no,
  18                     const object_locator_t& oloc, uint64_t off, uint64_t len,
  19                     snapid_t snapid, bufferlist *pbl, uint64_t trunc_size,
  20                     __u32 trunc_seq, int op_flags, Context *onfinish) override {
  21     m_objecter->read_trunc(oid, oloc, off, len, snapid, pbl, 0,
  22                            trunc_size, trunc_seq,
  23                            new C_OnFinisher(new C_Lock(m_lock, onfinish),
  24                                             m_finisher));
  25   }
  26
  27   bool may_copy_on_write(const object_t& oid, uint64_t read_off,
  28                                  uint64_t read_len, snapid_t snapid) override {
  29     return false;
  30   }
  31
  32   ceph_tid_t write(const object_t& oid, const object_locator_t& oloc,
  33                            uint64_t off, uint64_t len,
  34                            const SnapContext& snapc, const bufferlist &bl,
  35                            ceph::real_time mtime, uint64_t trunc_size,
  36                            __u32 trunc_seq, ceph_tid_t journal_tid,
  37                            Context *oncommit) override {
  38     return m_objecter->write_trunc(oid, oloc, off, len, snapc, bl, mtime, 0,
  39                                    trunc_size, trunc_seq,
  40                                    new C_OnFinisher(new C_Lock(m_lock,
  41                                                                oncommit),
  42                                                     m_finisher));
  43   }
  44
  45   bool can_scattered_write() override { return true; }
  46   using WritebackHandler::write;
  47   ceph_tid_t write(const object_t& oid, const object_locator_t& oloc,
  48                            vector<pair<uint64_t, bufferlist> >& io_vec,
  49                            const SnapContext& snapc, ceph::real_time mtime,
  50                            uint64_t trunc_size, __u32 trunc_seq,
  51                            Context *oncommit) override {
  52     ObjectOperation op;
  53     for (vector<pair<uint64_t, bufferlist> >::iterator p = io_vec.begin();
  54          p != io_vec.end();
  55          ++p)
  56       op.write(p->first, p->second, trunc_size, trunc_seq);
  57
  58     return m_objecter->mutate(oid, oloc, op, snapc, mtime, 0,
  59                               new C_OnFinisher(new C_Lock(m_lock, oncommit),
  60                                                m_finisher));
  61   }
  62
  63  private:
  64   Objecter *m_objecter;
  65   Finisher *m_finisher;
  66   Mutex *m_lock;
  67 };
  68
  69 #endif