ceph/src/messages/MOSDPGRemove.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
  16 #ifndef CEPH_MOSDPGREMOVE_H
  17 #define CEPH_MOSDPGREMOVE_H
  18
  19 #include "common/hobject.h"
  20 #include "msg/Message.h"
  21
  22
  23 class MOSDPGRemove : public Message {
  24
  25   static const int HEAD_VERSION = 3;
  26   static const int COMPAT_VERSION = 2;
  27
  28   epoch_t epoch = 0;
  29
  30  public:
  31   vector<spg_t> pg_list;
  32
  33   epoch_t get_epoch() const { return epoch; }
  34
  35   MOSDPGRemove() :
  36     Message(MSG_OSD_PG_REMOVE, HEAD_VERSION, COMPAT_VERSION) {}
  37   MOSDPGRemove(epoch_t e, vector<spg_t>& l) :
  38     Message(MSG_OSD_PG_REMOVE, HEAD_VERSION, COMPAT_VERSION) {
  39     this->epoch = e;
  40     pg_list.swap(l);
  41   }
  42 private:
  43   ~MOSDPGRemove() override {}
  44
  45 public:
  46   const char *get_type_name() const override { return "PGrm"; }
  47
  48   void encode_payload(uint64_t features) override {
  49     if (HAVE_FEATURE(features, SERVER_LUMINOUS)) {
  50       header.version = HEAD_VERSION;
  51     } else {
  52       // for jewel+kraken
  53       header.version = 2;
  54       ::encode(epoch, payload);
  55
  56       vector<pg_t> _pg_list;
  57       _pg_list.reserve(pg_list.size());
  58       vector<shard_id_t> _shard_list;
  59       _shard_list.reserve(pg_list.size());
  60       for (auto i = pg_list.begin(); i != pg_list.end(); ++i) {
  61         _pg_list.push_back(i->pgid);
  62         _shard_list.push_back(i->shard);
  63       }
  64       ::encode(_pg_list, payload);
  65       ::encode(_shard_list, payload);
  66       return;
  67     }
  68     ::encode(epoch, payload);
  69     ::encode(pg_list, payload);
  70   }
  71   void decode_payload() override {
  72     bufferlist::iterator p = payload.begin();
  73     if (header.version == 2) {
  74       // jewel/kraken
  75       ::decode(epoch, p);
  76       vector<pg_t> _pg_list;
  77       ::decode(_pg_list, p);
  78
  79       vector<shard_id_t> _shard_list(_pg_list.size(), shard_id_t::NO_SHARD);
  80       _shard_list.clear();
  81       ::decode(_shard_list, p);
  82       assert(_shard_list.size() == _pg_list.size());
  83       pg_list.reserve(_shard_list.size());
  84       for (unsigned i = 0; i < _shard_list.size(); ++i) {
  85         pg_list.push_back(spg_t(_pg_list[i], _shard_list[i]));
  86       }
  87       return;
  88     }
  89     ::decode(epoch, p);
  90     ::decode(pg_list, p);
  91   }
  92   void print(ostream& out) const override {
  93     out << "osd pg remove(" << "epoch " << epoch << "; ";
  94     for (vector<spg_t>::const_iterator i = pg_list.begin();
  95          i != pg_list.end();
  96          ++i) {
  97       out << "pg" << *i << "; ";
  98     }
  99     out << ")";
 100   }
 101 };
 102
 103 #endif