ceph/src/messages/MMDSTableRequest.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_MMDSTABLEREQUEST_H
  17 #define CEPH_MMDSTABLEREQUEST_H
  18
  19 #include "mds/mds_table_types.h"
  20 #include "messages/MMDSOp.h"
  21
  22 class MMDSTableRequest final : public MMDSOp {
  23 public:
  24   __u16 table = 0;
  25   __s16 op = 0;
  26   uint64_t reqid = 0;
  27   ceph::buffer::list bl;
  28
  29 protected:
  30   MMDSTableRequest() : MMDSOp{MSG_MDS_TABLE_REQUEST} {}
  31   MMDSTableRequest(int tab, int o, uint64_t r, version_t v=0) :
  32     MMDSOp{MSG_MDS_TABLE_REQUEST},
  33     table(tab), op(o), reqid(r) {
  34     set_tid(v);
  35   }
  36   ~MMDSTableRequest() final {}
  37
  38 public:
  39   std::string_view get_type_name() const override { return "mds_table_request"; }
  40   void print(std::ostream& o) const override {
  41     o << "mds_table_request(" << get_mdstable_name(table)
  42       << " " << get_mdstableserver_opname(op);
  43     if (reqid) o << " " << reqid;
  44     if (get_tid()) o << " tid " << get_tid();
  45     if (bl.length()) o << " " << bl.length() << " bytes";
  46     o << ")";
  47   }
  48
  49   void decode_payload() override {
  50     using ceph::decode;
  51     auto p = payload.cbegin();
  52     decode(table, p);
  53     decode(op, p);
  54     decode(reqid, p);
  55     decode(bl, p);
  56   }
  57
  58   void encode_payload(uint64_t features) override {
  59     using ceph::encode;
  60     encode(table, payload);
  61     encode(op, payload);
  62     encode(reqid, payload);
  63     encode(bl, payload);
  64   }
  65 private:
  66   template<class T, typename... Args>
  67   friend boost::intrusive_ptr<T> ceph::make_message(Args&&... args);
  68   template<class T, typename... Args>
  69   friend MURef<T> crimson::make_message(Args&&... args);
  70 };
  71
  72 #endif