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// -*- mode:C++; tab-width:8; c-basic-offset:2; indent-tabs-mode:t -*-
// vim: ts=8 sw=2 smarttab
#pragma once
#include <boost/statechart/event_base.hpp>
#include "crimson/net/Connection.h"
#include "crimson/osd/osd_operation.h"
#include "crimson/common/type_helpers.h"
#include "messages/MOSDOp.h"
namespace crimson::osd {
class PG;
class ShardServices;
class BackgroundRecovery : public OperationT<BackgroundRecovery> {
public:
static constexpr OperationTypeCode type = OperationTypeCode::background_recovery;
BackgroundRecovery(
Ref<PG> pg,
ShardServices &ss,
epoch_t epoch_started,
crimson::osd::scheduler::scheduler_class_t scheduler_class);
virtual void print(std::ostream &) const;
seastar::future<> start();
protected:
Ref<PG> pg;
const epoch_t epoch_started;
private:
virtual void dump_detail(Formatter *f) const;
crimson::osd::scheduler::params_t get_scheduler_params() const {
return {
1, // cost
0, // owner
scheduler_class
};
}
virtual seastar::future<bool> do_recovery() = 0;
ShardServices &ss;
const crimson::osd::scheduler::scheduler_class_t scheduler_class;
};
/// represent a recovery initiated for serving a client request
///
/// unlike @c PglogBasedRecovery and @c BackfillRecovery,
/// @c UrgentRecovery is not throttled by the scheduler. and it
/// utilizes @c RecoveryBackend directly to recover the unreadable
/// object.
class UrgentRecovery final : public BackgroundRecovery {
public:
UrgentRecovery(
const hobject_t& soid,
const eversion_t& need,
Ref<PG> pg,
ShardServices& ss,
epoch_t epoch_started)
: BackgroundRecovery{pg, ss, epoch_started,
crimson::osd::scheduler::scheduler_class_t::immediate},
soid{soid}, need(need) {}
void print(std::ostream&) const final;
private:
void dump_detail(Formatter* f) const final;
seastar::future<bool> do_recovery() override;
const hobject_t soid;
const eversion_t need;
};
class PglogBasedRecovery final : public BackgroundRecovery {
public:
PglogBasedRecovery(
Ref<PG> pg,
ShardServices &ss,
epoch_t epoch_started);
private:
seastar::future<bool> do_recovery() override;
};
class BackfillRecovery final : public BackgroundRecovery {
public:
class BackfillRecoveryPipeline {
OrderedPipelinePhase process = {
"BackfillRecovery::PGPipeline::process"
};
friend class BackfillRecovery;
friend class PeeringEvent;
};
template <class EventT>
BackfillRecovery(
Ref<PG> pg,
ShardServices &ss,
epoch_t epoch_started,
const EventT& evt);
static BackfillRecoveryPipeline &bp(PG &pg);
private:
boost::intrusive_ptr<const boost::statechart::event_base> evt;
OrderedPipelinePhase::Handle handle;
seastar::future<bool> do_recovery() override;
};
template <class EventT>
BackfillRecovery::BackfillRecovery(
Ref<PG> pg,
ShardServices &ss,
const epoch_t epoch_started,
const EventT& evt)
: BackgroundRecovery(
std::move(pg),
ss,
epoch_started,
crimson::osd::scheduler::scheduler_class_t::background_best_effort),
evt(evt.intrusive_from_this())
{}
}
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