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// -*- mode:C++; tab-width:8; c-basic-offset:2; indent-tabs-mode:t -*-
// vim: ts=8 sw=2 smarttab
#include <seastar/core/future.hh>
#include <seastar/core/sleep.hh>
#include "messages/MOSDPGLog.h"
#include "common/Formatter.h"
#include "crimson/osd/pg.h"
#include "crimson/osd/osd.h"
#include "crimson/osd/osd_operation_external_tracking.h"
#include "crimson/osd/osd_operations/peering_event.h"
#include "crimson/osd/osd_connection_priv.h"
namespace {
seastar::logger& logger() {
return crimson::get_logger(ceph_subsys_osd);
}
}
SET_SUBSYS(osd);
namespace crimson::osd {
template <class T>
void PeeringEvent<T>::print(std::ostream &lhs) const
{
lhs << "PeeringEvent("
<< "from=" << from
<< " pgid=" << pgid
<< " sent=" << evt.get_epoch_sent()
<< " requested=" << evt.get_epoch_requested()
<< " evt=" << evt.get_desc()
<< ")";
}
template <class T>
void PeeringEvent<T>::dump_detail(Formatter *f) const
{
f->open_object_section("PeeringEvent");
f->dump_stream("from") << from;
f->dump_stream("pgid") << pgid;
f->dump_int("sent", evt.get_epoch_sent());
f->dump_int("requested", evt.get_epoch_requested());
f->dump_string("evt", evt.get_desc());
f->open_array_section("events");
{
std::apply([f](auto&... events) {
(..., events.dump(f));
}, static_cast<const T*>(this)->tracking_events);
}
f->close_section();
f->close_section();
}
template <class T>
PGPeeringPipeline &PeeringEvent<T>::peering_pp(PG &pg)
{
return pg.peering_request_pg_pipeline;
}
template <class T>
seastar::future<> PeeringEvent<T>::with_pg(
ShardServices &shard_services, Ref<PG> pg)
{
using interruptor = typename T::interruptor;
LOG_PREFIX(PeeringEvent<T>::with_pg);
if (!pg) {
WARNI("{}: pg absent, did not create", *this);
on_pg_absent(shard_services);
that()->get_handle().exit();
return complete_rctx_no_pg(shard_services);
}
DEBUGI("start");
return interruptor::with_interruption([this, pg, &shard_services] {
LOG_PREFIX(PeeringEvent<T>::with_pg);
DEBUGI("{} {}: pg present", interruptor::get_interrupt_cond(), *this);
return this->template enter_stage<interruptor>(peering_pp(*pg).await_map
).then_interruptible([this, pg] {
return this->template with_blocking_event<
PG_OSDMapGate::OSDMapBlocker::BlockingEvent
>([this, pg](auto &&trigger) {
return pg->osdmap_gate.wait_for_map(
std::move(trigger), evt.get_epoch_sent());
});
}).then_interruptible([this, pg](auto) {
return this->template enter_stage<interruptor>(peering_pp(*pg).process);
}).then_interruptible([this, pg, &shard_services] {
/* The DeleteSome event invokes PeeringListener::do_delete_work, which
* needs to return (without a future) the object to start with on the next
* call. As a consequence, crimson's do_delete_work implementation needs
* to use get() for the object listing. To support that, we wrap
* PG::do_peering_event with interruptor::async here.
*
* Otherwise, it's not ok to yield during peering event handler. Doing so
* allows other continuations to observe PeeringState in the middle
* of, for instance, a map advance. The interface *does not* support such
* usage. DeleteSome happens not to trigger that problem so it's ok for
* now, but we'll want to remove that as well.
* https://tracker.ceph.com/issues/66708
*/
return interruptor::async([this, pg, &shard_services] {
pg->do_peering_event(evt, ctx);
complete_rctx(shard_services, pg).get();
}).then_interruptible([this] {
return that()->get_handle().complete();
});
});
}, [this](std::exception_ptr ep) {
LOG_PREFIX(PeeringEvent<T>::with_pg);
DEBUGI("{}: interrupted with {}", *this, ep);
}, pg, evt.get_epoch_sent()).finally([this] {
logger().debug("{}: exit", *this);
that()->get_handle().exit();
});
}
template <class T>
void PeeringEvent<T>::on_pg_absent(ShardServices &)
{
using interruptor = typename T::interruptor;
LOG_PREFIX(PeeringEvent<T>::on_pg_absent);
DEBUGI("{}: pg absent, dropping", *this);
}
template <class T>
typename PeeringEvent<T>::template interruptible_future<>
PeeringEvent<T>::complete_rctx(ShardServices &shard_services, Ref<PG> pg)
{
using interruptor = typename T::interruptor;
LOG_PREFIX(PeeringEvent<T>::complete_rctx);
DEBUGI("{}: submitting ctx", *this);
return pg->complete_rctx(std::move(ctx));
}
ConnectionPipeline &RemotePeeringEvent::get_connection_pipeline()
{
return get_osd_priv(&get_local_connection()
).peering_request_conn_pipeline;
}
PerShardPipeline &RemotePeeringEvent::get_pershard_pipeline(
ShardServices &shard_services)
{
return shard_services.get_peering_request_pipeline();
}
void RemotePeeringEvent::on_pg_absent(ShardServices &shard_services)
{
if (auto& e = get_event().get_event();
e.dynamic_type() == MQuery::static_type()) {
const auto map_epoch =
shard_services.get_map()->get_epoch();
const auto& q = static_cast<const MQuery&>(e);
const pg_info_t empty{spg_t{pgid.pgid, q.query.to}};
if (q.query.type == q.query.LOG ||
q.query.type == q.query.FULLLOG) {
auto m = crimson::make_message<MOSDPGLog>(q.query.from, q.query.to,
map_epoch, empty,
q.query.epoch_sent);
ctx.send_osd_message(q.from.osd, std::move(m));
} else {
ctx.send_notify(q.from.osd, {q.query.from, q.query.to,
q.query.epoch_sent,
map_epoch, empty,
PastIntervals{},
PG_FEATURE_CRIMSON_ALL});
}
}
}
RemotePeeringEvent::interruptible_future<> RemotePeeringEvent::complete_rctx(
ShardServices &shard_services,
Ref<PG> pg)
{
if (pg) {
return PeeringEvent::complete_rctx(shard_services, pg);
} else {
return shard_services.dispatch_context_messages(std::move(ctx));
}
}
seastar::future<> RemotePeeringEvent::complete_rctx_no_pg(
ShardServices &shard_services)
{
return shard_services.dispatch_context_messages(std::move(ctx));
}
seastar::future<> LocalPeeringEvent::start()
{
LOG_PREFIX(LocalPeeringEvent::start);
DEBUGI("{}: start", *this);
IRef ref = this;
auto maybe_delay = seastar::now();
if (delay) {
maybe_delay = seastar::sleep(
std::chrono::milliseconds(std::lround(delay * 1000)));
}
return maybe_delay.then([this] {
return with_pg(pg->get_shard_services(), pg);
}).finally([ref=std::move(ref)] {
LOG_PREFIX(LocalPeeringEvent::start);
DEBUGI("{}: complete", *ref);
});
}
LocalPeeringEvent::~LocalPeeringEvent() {}
template class PeeringEvent<RemotePeeringEvent>;
template class PeeringEvent<LocalPeeringEvent>;
}
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