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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_MOSDPGLOG_H
#define CEPH_MOSDPGLOG_H
#include "messages/MOSDPeeringOp.h"
class MOSDPGLog : public MessageInstance<MOSDPGLog, MOSDPeeringOp> {
public:
friend factory;
private:
static constexpr int HEAD_VERSION = 5;
static constexpr int COMPAT_VERSION = 5;
epoch_t epoch = 0;
/// query_epoch is the epoch of the query being responded to, or
/// the current epoch if this is not being sent in response to a
/// query. This allows the recipient to disregard responses to old
/// queries.
epoch_t query_epoch = 0;
public:
shard_id_t to;
shard_id_t from;
pg_info_t info;
pg_log_t log;
pg_missing_t missing;
PastIntervals past_intervals;
epoch_t get_epoch() const { return epoch; }
spg_t get_pgid() const { return spg_t(info.pgid.pgid, to); }
epoch_t get_query_epoch() const { return query_epoch; }
spg_t get_spg() const override {
return spg_t(info.pgid.pgid, to);
}
epoch_t get_map_epoch() const override {
return epoch;
}
epoch_t get_min_epoch() const override {
return query_epoch;
}
PGPeeringEvent *get_event() override {
return new PGPeeringEvent(
epoch, query_epoch,
MLogRec(pg_shard_t(get_source().num(), from),
this),
true,
new PGCreateInfo(
get_spg(),
query_epoch,
info.history,
past_intervals,
false));
}
MOSDPGLog() : MessageInstance(MSG_OSD_PG_LOG, HEAD_VERSION, COMPAT_VERSION) {
set_priority(CEPH_MSG_PRIO_HIGH);
}
MOSDPGLog(shard_id_t to, shard_id_t from,
version_t mv, pg_info_t& i, epoch_t query_epoch)
: MessageInstance(MSG_OSD_PG_LOG, HEAD_VERSION, COMPAT_VERSION),
epoch(mv), query_epoch(query_epoch),
to(to), from(from),
info(i) {
set_priority(CEPH_MSG_PRIO_HIGH);
}
private:
~MOSDPGLog() override {}
public:
std::string_view get_type_name() const override { return "PGlog"; }
void inner_print(ostream& out) const override {
// NOTE: log is not const, but operator<< doesn't touch fields
// swapped out by OSD code.
out << "log " << log
<< " pi " << past_intervals;
}
void encode_payload(uint64_t features) override {
using ceph::encode;
encode(epoch, payload);
encode(info, payload);
encode(log, payload);
encode(missing, payload);
if (!HAVE_FEATURE(features, SERVER_NAUTILUS)) {
// pre-nautilus OSDs do not set last_peering_reset properly
encode(epoch, payload);
} else {
encode(query_epoch, payload);
}
encode(past_intervals, payload);
encode(to, payload);
encode(from, payload);
}
void decode_payload() override {
auto p = payload.cbegin();
decode(epoch, p);
decode(info, p);
log.decode(p, info.pgid.pool());
missing.decode(p, info.pgid.pool());
decode(query_epoch, p);
decode(past_intervals, p);
decode(to, p);
decode(from, p);
}
};
#endif
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