ceph/src/messages/MClientRequestForward.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_MCLIENTREQUESTFORWARD_H
  17 #define CEPH_MCLIENTREQUESTFORWARD_H
  18
  19 #include "msg/Message.h"
  20
  21 class MClientRequestForward : public Message {
  22   int32_t dest_mds;
  23   int32_t num_fwd;
  24   bool client_must_resend;
  25
  26  public:
  27   MClientRequestForward()
  28     : Message(CEPH_MSG_CLIENT_REQUEST_FORWARD),
  29       dest_mds(-1), num_fwd(-1), client_must_resend(false) {}
  30   MClientRequestForward(ceph_tid_t t, int dm, int nf, bool cmr) :
  31     Message(CEPH_MSG_CLIENT_REQUEST_FORWARD),
  32     dest_mds(dm), num_fwd(nf), client_must_resend(cmr) {
  33     assert(client_must_resend);
  34     header.tid = t;
  35   }
  36 private:
  37   ~MClientRequestForward() override {}
  38
  39 public:
  40   int get_dest_mds() { return dest_mds; }
  41   int get_num_fwd() { return num_fwd; }
  42   bool must_resend() { return client_must_resend; }
  43
  44   const char *get_type_name() const override { return "client_request_forward"; }
  45   void print(ostream& o) const override {
  46     o << "client_request_forward(" << get_tid()
  47       << " to mds." << dest_mds
  48       << " num_fwd=" << num_fwd
  49       << (client_must_resend ? " client_must_resend":"")
  50       << ")";
  51   }
  52
  53   void encode_payload(uint64_t features) override {
  54     ::encode(dest_mds, payload);
  55     ::encode(num_fwd, payload);
  56     ::encode(client_must_resend, payload);
  57   }
  58
  59   void decode_payload() override {
  60     bufferlist::iterator p = payload.begin();
  61     ::decode(dest_mds, p);
  62     ::decode(num_fwd, p);
  63     ::decode(client_must_resend, p);
  64   }
  65 };
  66
  67 #endif