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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) 2004-2006 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.
*
*/
#ifndef CEPH_MRECOVERY_H
#define CEPH_MRECOVERY_H
#include "msg/Message.h"
#include "messages/MOSDPeeringOp.h"
class MRecoveryReserve : public MessageInstance<MRecoveryReserve, MOSDPeeringOp> {
public:
friend factory;
private:
static constexpr int HEAD_VERSION = 3;
static constexpr int COMPAT_VERSION = 2;
public:
spg_t pgid;
epoch_t query_epoch;
enum {
REQUEST = 0, // primary->replica: please reserve slot
GRANT = 1, // replica->primary: ok, i reserved it
RELEASE = 2, // primary->replica: release the slot i reserved before
REVOKE = 3, // replica->primary: i'm taking back the slot i gave you
};
uint32_t type;
uint32_t priority = 0;
spg_t get_spg() const {
return pgid;
}
epoch_t get_map_epoch() const {
return query_epoch;
}
epoch_t get_min_epoch() const {
return query_epoch;
}
PGPeeringEvent *get_event() override {
switch (type) {
case REQUEST:
return new PGPeeringEvent(
query_epoch,
query_epoch,
RequestRecoveryPrio(priority));
case GRANT:
return new PGPeeringEvent(
query_epoch,
query_epoch,
RemoteRecoveryReserved());
case RELEASE:
return new PGPeeringEvent(
query_epoch,
query_epoch,
RecoveryDone());
case REVOKE:
return new PGPeeringEvent(
query_epoch,
query_epoch,
DeferRecovery(0.0));
default:
ceph_abort();
}
}
MRecoveryReserve()
: MessageInstance(MSG_OSD_RECOVERY_RESERVE, HEAD_VERSION, COMPAT_VERSION),
query_epoch(0), type(-1) {}
MRecoveryReserve(int type,
spg_t pgid,
epoch_t query_epoch,
unsigned prio = 0)
: MessageInstance(MSG_OSD_RECOVERY_RESERVE, HEAD_VERSION, COMPAT_VERSION),
pgid(pgid), query_epoch(query_epoch),
type(type), priority(prio) {}
std::string_view get_type_name() const override {
return "MRecoveryReserve";
}
void inner_print(ostream& out) const override {
switch (type) {
case REQUEST:
out << "REQUEST";
break;
case GRANT:
out << "GRANT";
break;
case RELEASE:
out << "RELEASE";
break;
case REVOKE:
out << "REVOKE";
break;
}
if (type == REQUEST) out << " prio: " << priority;
}
void decode_payload() override {
auto p = payload.cbegin();
decode(pgid.pgid, p);
decode(query_epoch, p);
decode(type, p);
decode(pgid.shard, p);
if (header.version >= 3) {
decode(priority, p);
}
}
void encode_payload(uint64_t features) override {
using ceph::encode;
encode(pgid.pgid, payload);
encode(query_epoch, payload);
encode(type, payload);
encode(pgid.shard, payload);
encode(priority, payload);
}
};
#endif
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