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,
  21                     const ZTracer::Trace &parent_trace,
  22                     Context *onfinish) override {
  23     m_objecter->read_trunc(oid, oloc, off, len, snapid, pbl, 0,
  24                            trunc_size, trunc_seq,
  25                            new C_OnFinisher(new C_Lock(m_lock, onfinish),
  26                                             m_finisher));
  27   }
  28
  29   bool may_copy_on_write(const object_t& oid, uint64_t read_off,
  30                                  uint64_t read_len, snapid_t snapid) override {
  31     return false;
  32   }
  33
  34   ceph_tid_t write(const object_t& oid, const object_locator_t& oloc,
  35                            uint64_t off, uint64_t len,
  36                            const SnapContext& snapc, const bufferlist &bl,
  37                            ceph::real_time mtime, uint64_t trunc_size,
  38                            __u32 trunc_seq, ceph_tid_t journal_tid,
  39                            const ZTracer::Trace &parent_trace,
  40                            Context *oncommit) override {
  41     return m_objecter->write_trunc(oid, oloc, off, len, snapc, bl, mtime, 0,
  42                                    trunc_size, trunc_seq,
  43                                    new C_OnFinisher(new C_Lock(m_lock,
  44                                                                oncommit),
  45                                                     m_finisher));
  46   }
  47
  48   bool can_scattered_write() override { return true; }
  49   using WritebackHandler::write;
  50   ceph_tid_t write(const object_t& oid, const object_locator_t& oloc,
  51                            vector<pair<uint64_t, bufferlist> >& io_vec,
  52                            const SnapContext& snapc, ceph::real_time mtime,
  53                            uint64_t trunc_size, __u32 trunc_seq,
  54                            Context *oncommit) override {
  55     ObjectOperation op;
  56     for (vector<pair<uint64_t, bufferlist> >::iterator p = io_vec.begin();
  57          p != io_vec.end();
  58          ++p)
  59       op.write(p->first, p->second, trunc_size, trunc_seq);
  60
  61     return m_objecter->mutate(oid, oloc, op, snapc, mtime, 0,
  62                               new C_OnFinisher(new C_Lock(m_lock, oncommit),
  63                                                m_finisher));
  64   }
  65
  66  private:
  67   Objecter *m_objecter;
  68   Finisher *m_finisher;
  69   Mutex *m_lock;
  70 };
  71
  72 #endif