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// Copyright Yahoo. Licensed under the terms of the Apache 2.0 license. See LICENSE in the project root.
#include "multi_threaded_stripe_access_guard.h"
#include "distributor_stripe.h"
#include "distributor_stripe_pool.h"
#include "distributor_stripe_thread.h"
namespace storage::distributor {
MultiThreadedStripeAccessGuard::MultiThreadedStripeAccessGuard(
MultiThreadedStripeAccessor& accessor,
DistributorStripePool& stripe_pool)
: _accessor(accessor),
_stripe_pool(stripe_pool)
{
assert(_stripe_pool.stripe_count() > 0);
_stripe_pool.park_all_threads();
}
MultiThreadedStripeAccessGuard::~MultiThreadedStripeAccessGuard() {
_stripe_pool.unpark_all_threads();
_accessor.mark_guard_released();
}
void MultiThreadedStripeAccessGuard::flush_and_close() {
for_each_stripe([](TickableStripe& stripe) {
stripe.flush_and_close();
});
}
void MultiThreadedStripeAccessGuard::update_total_distributor_config(std::shared_ptr<const DistributorConfiguration> config) {
for_each_stripe([&](TickableStripe& stripe) {
stripe.update_total_distributor_config(config);
});
}
void MultiThreadedStripeAccessGuard::update_distribution_config(const BucketSpaceDistributionConfigs& new_configs) {
for_each_stripe([&](TickableStripe& stripe) {
stripe.update_distribution_config(new_configs);
});
}
void MultiThreadedStripeAccessGuard::set_pending_cluster_state_bundle(const lib::ClusterStateBundle& pending_state) {
for_each_stripe([&](TickableStripe& stripe) {
stripe.set_pending_cluster_state_bundle(pending_state);
});
}
void MultiThreadedStripeAccessGuard::clear_pending_cluster_state_bundle() {
for_each_stripe([](TickableStripe& stripe) {
stripe.clear_pending_cluster_state_bundle();
});
}
void MultiThreadedStripeAccessGuard::enable_cluster_state_bundle(const lib::ClusterStateBundle& new_state,
bool has_bucket_ownership_change)
{
for_each_stripe([&](TickableStripe& stripe) {
stripe.enable_cluster_state_bundle(new_state, has_bucket_ownership_change);
});
}
void MultiThreadedStripeAccessGuard::notify_distribution_change_enabled() {
for_each_stripe([](TickableStripe& stripe) {
stripe.notify_distribution_change_enabled();
});
}
PotentialDataLossReport
MultiThreadedStripeAccessGuard::remove_superfluous_buckets(document::BucketSpace bucket_space,
const lib::ClusterState& new_state,
bool is_distribution_change)
{
PotentialDataLossReport report;
for_each_stripe([&](TickableStripe& stripe) {
report.merge(stripe.remove_superfluous_buckets(bucket_space, new_state, is_distribution_change));
});
return report;
}
void
MultiThreadedStripeAccessGuard::merge_entries_into_db(document::BucketSpace bucket_space,
api::Timestamp gathered_at_timestamp,
const lib::Distribution& distribution,
const lib::ClusterState& new_state,
const char* storage_up_states,
const OutdatedNodes & outdated_nodes,
const std::vector<dbtransition::Entry>& entries)
{
if (entries.empty()) {
return;
}
std::vector<dbtransition::Entry> stripe_entries;
stripe_entries.reserve(entries.size() / _stripe_pool.stripe_count());
auto* curr_stripe = &_stripe_pool.stripe_of_key(entries[0].bucket_key);
stripe_entries.push_back(entries[0]);
for (size_t i = 1; i < entries.size(); ++i) {
const auto& entry = entries[i];
auto* next_stripe = &_stripe_pool.stripe_of_key(entry.bucket_key);
if (curr_stripe != next_stripe) {
curr_stripe->merge_entries_into_db(bucket_space, gathered_at_timestamp, distribution,
new_state, storage_up_states, outdated_nodes, stripe_entries);
stripe_entries.clear();
}
curr_stripe = next_stripe;
stripe_entries.push_back(entry);
}
curr_stripe->merge_entries_into_db(bucket_space, gathered_at_timestamp, distribution,
new_state, storage_up_states, outdated_nodes, stripe_entries);
}
void MultiThreadedStripeAccessGuard::update_read_snapshot_before_db_pruning() {
for_each_stripe([](TickableStripe& stripe) {
stripe.update_read_snapshot_before_db_pruning();
});
}
void MultiThreadedStripeAccessGuard::update_read_snapshot_after_db_pruning(const lib::ClusterStateBundle& new_state) {
for_each_stripe([&](TickableStripe& stripe) {
stripe.update_read_snapshot_after_db_pruning(new_state);
});
}
void MultiThreadedStripeAccessGuard::update_read_snapshot_after_activation(const lib::ClusterStateBundle& activated_state) {
for_each_stripe([&](TickableStripe& stripe) {
stripe.update_read_snapshot_after_activation(activated_state);
});
}
void MultiThreadedStripeAccessGuard::clear_read_only_bucket_repo_databases() {
for_each_stripe([](TickableStripe& stripe) {
stripe.clear_read_only_bucket_repo_databases();
});
}
void MultiThreadedStripeAccessGuard::update_node_supported_features_repo(
std::shared_ptr<const NodeSupportedFeaturesRepo> features_repo)
{
for_each_stripe([&](TickableStripe& stripe) {
stripe.update_node_supported_features_repo(features_repo);
});
}
void MultiThreadedStripeAccessGuard::report_bucket_db_status(document::BucketSpace bucket_space, std::ostream& out) const {
for_each_stripe([&](TickableStripe& stripe) {
stripe.report_bucket_db_status(bucket_space, out);
});
}
StripeAccessGuard::PendingOperationStats
MultiThreadedStripeAccessGuard::pending_operation_stats() const {
StripeAccessGuard::PendingOperationStats stats(0, 0);
for_each_stripe([&](const TickableStripe& stripe) {
stats.merge(stripe.pending_operation_stats());
});
return stats;
}
void MultiThreadedStripeAccessGuard::report_single_bucket_requests(vespalib::xml::XmlOutputStream& xos) const {
for_each_stripe([&](TickableStripe& stripe) {
stripe.report_single_bucket_requests(xos);
});
}
void MultiThreadedStripeAccessGuard::report_delayed_single_bucket_requests(vespalib::xml::XmlOutputStream& xos) const {
for_each_stripe([&](TickableStripe& stripe) {
stripe.report_delayed_single_bucket_requests(xos);
});
}
template <typename Func>
void MultiThreadedStripeAccessGuard::for_each_stripe(Func&& f) {
for (auto& stripe_thread : _stripe_pool) {
f(stripe_thread->stripe());
}
}
template <typename Func>
void MultiThreadedStripeAccessGuard::for_each_stripe(Func&& f) const {
for (const auto& stripe_thread : _stripe_pool) {
f(stripe_thread->stripe());
}
}
std::unique_ptr<StripeAccessGuard> MultiThreadedStripeAccessor::rendezvous_and_hold_all() {
// For sanity checking of invariant of only one guard being allowed at any given time.
assert(!_guard_held);
_guard_held = true;
return std::make_unique<MultiThreadedStripeAccessGuard>(*this, _stripe_pool);
}
void MultiThreadedStripeAccessor::mark_guard_released() {
assert(_guard_held);
_guard_held = false;
}
}
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