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// -*- mode:C++; tab-width:8; c-basic-offset:2; indent-tabs-mode:t -*-
// vim: ts=8 sw=2 smarttab
/*
* Ceph - scalable distributed file system
*
* Copyright (C) 2004-2010 Sage Weil <sage@newdream.net>
*
* This is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License version 2.1, as published by the Free Software
* Foundation. See file COPYING.
*
* Client requests often need to get forwarded from some monitor
* to the leader. This class encapsulates the original message
* along with the client's caps so the leader can do proper permissions
* checking.
*/
#ifndef CEPH_MFORWARD_H
#define CEPH_MFORWARD_H
#include "msg/Message.h"
#include "mon/MonCaps.h"
#include "include/encoding.h"
struct MForward : public Message {
uint64_t tid;
PaxosServiceMessage *msg;
entity_inst_t client;
MonCaps client_caps;
MForward() : Message(MSG_FORWARD), tid(0), msg(NULL) {}
//the message needs to have caps filled in!
MForward(uint64_t t, PaxosServiceMessage *m) :
Message(MSG_FORWARD), tid(t), msg(m) {
client = m->get_source_inst();
client_caps = m->get_session()->caps;
}
MForward(uint64_t t, PaxosServiceMessage *m, MonCaps caps) :
Message(MSG_FORWARD), tid(t), msg(m), client_caps(caps) {
client = m->get_source_inst();
}
private:
~MForward() {
if (msg) msg->put();
}
public:
void encode_payload() {
::encode(tid, payload);
::encode(client, payload);
::encode(client_caps, payload);
encode_message(msg, payload);
}
void decode_payload() {
bufferlist::iterator p = payload.begin();
::decode(tid, p);
::decode(client, p);
::decode(client_caps, p);
msg = (PaxosServiceMessage *)decode_message(p);
}
const char *get_type_name() { return "forward"; }
void print(ostream& o) {
if (msg)
o << "forward(" << *msg << ") to leader";
else o << "forward(??? ) to leader";
}
};
#endif
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