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#include "crimson/osd/object_context_loader.h"
#include "osd/osd_types_fmt.h"
SET_SUBSYS(osd);
namespace crimson::osd {
using crimson::common::local_conf;
template<RWState::State State>
ObjectContextLoader::load_obc_iertr::future<>
ObjectContextLoader::with_head_obc(ObjectContextRef obc,
bool existed,
with_obc_func_t&& func)
{
LOG_PREFIX(ObjectContextLoader::with_head_obc);
DEBUGDPP("object {}", dpp, obc->get_oid());
assert(obc->is_head());
obc->append_to(obc_set_accessing);
return obc->with_lock<State, IOInterruptCondition>(
[existed=existed, obc=obc, func=std::move(func), this] {
return get_or_load_obc<State>(obc, existed)
.safe_then_interruptible(
[func = std::move(func)](auto obc) {
return std::move(func)(std::move(obc));
});
}).finally([FNAME, this, obc=std::move(obc)] {
DEBUGDPP("released object {}", dpp, obc->get_oid());
obc->remove_from(obc_set_accessing);
});
}
template<RWState::State State>
ObjectContextLoader::load_obc_iertr::future<>
ObjectContextLoader::with_clone_obc(hobject_t oid,
with_obc_func_t&& func)
{
LOG_PREFIX(ObjectContextLoader::with_clone_obc);
assert(!oid.is_head());
return with_obc<RWState::RWREAD>(
oid.get_head(),
[FNAME, oid, func=std::move(func), this](auto head) mutable
-> load_obc_iertr::future<> {
if (!head->obs.exists) {
ERRORDPP("head doesn't exist for object {}", dpp, head->obs.oi.soid);
return load_obc_iertr::future<>{
crimson::ct_error::enoent::make()
};
}
return this->with_clone_obc_only<State>(std::move(head),
oid,
std::move(func));
});
}
template<RWState::State State>
ObjectContextLoader::load_obc_iertr::future<>
ObjectContextLoader::with_clone_obc_only(ObjectContextRef head,
hobject_t oid,
with_obc_func_t&& func)
{
LOG_PREFIX(ObjectContextLoader::with_clone_obc_only);
auto coid = resolve_oid(head->get_head_ss(), oid);
if (!coid) {
ERRORDPP("clone {} not found", dpp, oid);
return load_obc_iertr::future<>{
crimson::ct_error::enoent::make()
};
}
auto [clone, existed] = obc_registry.get_cached_obc(*coid);
return clone->template with_lock<State, IOInterruptCondition>(
[existed=existed, clone=std::move(clone),
func=std::move(func), head=std::move(head), this]()
-> load_obc_iertr::future<> {
auto loaded = get_or_load_obc<State>(clone, existed);
return loaded.safe_then_interruptible(
[func = std::move(func)](auto clone) {
return std::move(func)(std::move(clone));
});
});
}
template<RWState::State State>
ObjectContextLoader::load_obc_iertr::future<>
ObjectContextLoader::with_clone_obc_direct(
hobject_t oid,
with_both_obc_func_t&& func)
{
LOG_PREFIX(ObjectContextLoader::with_clone_obc_direct);
assert(!oid.is_head());
return with_obc<RWState::RWREAD>(
oid.get_head(),
[FNAME, oid, func=std::move(func), this](auto head) mutable
-> load_obc_iertr::future<> {
if (!head->obs.exists) {
ERRORDPP("head doesn't exist for object {}", dpp, head->obs.oi.soid);
return load_obc_iertr::future<>{
crimson::ct_error::enoent::make()
};
}
#ifndef NDEBUG
auto &ss = head->get_head_ss();
auto cit = std::find(
std::begin(ss.clones), std::end(ss.clones), oid.snap);
assert(cit != std::end(ss.clones));
#endif
auto [clone, existed] = obc_registry.get_cached_obc(oid);
return clone->template with_lock<State, IOInterruptCondition>(
[existed=existed, clone=std::move(clone),
func=std::move(func), head=std::move(head), this]()
-> load_obc_iertr::future<> {
auto loaded = get_or_load_obc<State>(clone, existed);
return loaded.safe_then_interruptible(
[func = std::move(func), head=std::move(head)](auto clone) {
return std::move(func)(std::move(head), std::move(clone));
});
});
});
}
template<RWState::State State>
ObjectContextLoader::load_obc_iertr::future<>
ObjectContextLoader::with_obc(hobject_t oid,
with_obc_func_t&& func)
{
if (oid.is_head()) {
auto [obc, existed] =
obc_registry.get_cached_obc(std::move(oid));
return with_head_obc<State>(std::move(obc),
existed,
std::move(func));
} else {
return with_clone_obc<State>(oid, std::move(func));
}
}
ObjectContextLoader::load_obc_iertr::future<ObjectContextRef>
ObjectContextLoader::load_obc(ObjectContextRef obc)
{
LOG_PREFIX(ObjectContextLoader::load_obc);
return backend.load_metadata(obc->get_oid())
.safe_then_interruptible(
[FNAME, this, obc=std::move(obc)](auto md)
-> load_obc_ertr::future<ObjectContextRef> {
const hobject_t& oid = md->os.oi.soid;
DEBUGDPP("loaded obs {} for {}", dpp, md->os.oi, oid);
if (oid.is_head()) {
if (!md->ssc) {
ERRORDPP("oid {} missing snapsetcontext", dpp, oid);
return crimson::ct_error::object_corrupted::make();
}
obc->set_head_state(std::move(md->os),
std::move(md->ssc));
} else {
obc->set_clone_state(std::move(md->os));
}
DEBUGDPP("returning obc {} for {}", dpp, obc->obs.oi, obc->obs.oi.soid);
return load_obc_ertr::make_ready_future<ObjectContextRef>(obc);
});
}
template<RWState::State State>
ObjectContextLoader::load_obc_iertr::future<ObjectContextRef>
ObjectContextLoader::get_or_load_obc(ObjectContextRef obc,
bool existed)
{
LOG_PREFIX(ObjectContextLoader::get_or_load_obc);
auto loaded =
load_obc_iertr::make_ready_future<ObjectContextRef>(obc);
if (existed) {
DEBUGDPP("cache hit on {}", dpp, obc->get_oid());
} else {
DEBUGDPP("cache miss on {}", dpp, obc->get_oid());
loaded =
obc->template with_promoted_lock<State, IOInterruptCondition>(
[obc, this] {
return load_obc(obc);
});
}
return loaded;
}
ObjectContextLoader::load_obc_iertr::future<>
ObjectContextLoader::reload_obc(ObjectContext& obc) const
{
LOG_PREFIX(ObjectContextLoader::reload_obc);
assert(obc.is_head());
return backend.load_metadata(obc.get_oid())
.safe_then_interruptible<false>(
[FNAME, this, &obc](auto md)-> load_obc_ertr::future<> {
DEBUGDPP("reloaded obs {} for {}", dpp, md->os.oi, obc.get_oid());
if (!md->ssc) {
ERRORDPP("oid {} missing snapsetcontext", dpp, obc.get_oid());
return crimson::ct_error::object_corrupted::make();
}
obc.set_head_state(std::move(md->os), std::move(md->ssc));
return load_obc_ertr::now();
});
}
void ObjectContextLoader::notify_on_change(bool is_primary)
{
LOG_PREFIX(ObjectContextLoader::notify_on_change);
DEBUGDPP("is_primary: {}", dpp, is_primary);
for (auto& obc : obc_set_accessing) {
DEBUGDPP("interrupting obc: {}", dpp, obc.get_oid());
obc.interrupt(::crimson::common::actingset_changed(is_primary));
}
}
// explicitly instantiate the used instantiations
template ObjectContextLoader::load_obc_iertr::future<>
ObjectContextLoader::with_obc<RWState::RWNONE>(hobject_t,
with_obc_func_t&&);
template ObjectContextLoader::load_obc_iertr::future<>
ObjectContextLoader::with_obc<RWState::RWREAD>(hobject_t,
with_obc_func_t&&);
template ObjectContextLoader::load_obc_iertr::future<>
ObjectContextLoader::with_obc<RWState::RWWRITE>(hobject_t,
with_obc_func_t&&);
template ObjectContextLoader::load_obc_iertr::future<>
ObjectContextLoader::with_obc<RWState::RWEXCL>(hobject_t,
with_obc_func_t&&);
template ObjectContextLoader::load_obc_iertr::future<>
ObjectContextLoader::with_clone_obc_direct<RWState::RWWRITE>(
hobject_t,
with_both_obc_func_t&&);
}
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