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/**
* Copyright (C) 2020-present MongoDB, Inc.
*
* This program is free software: you can redistribute it and/or modify
* it under the terms of the Server Side Public License, version 1,
* as published by MongoDB, Inc.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* Server Side Public License for more details.
*
* You should have received a copy of the Server Side Public License
* along with this program. If not, see
* <http://www.mongodb.com/licensing/server-side-public-license>.
*
* As a special exception, the copyright holders give permission to link the
* code of portions of this program with the OpenSSL library under certain
* conditions as described in each individual source file and distribute
* linked combinations including the program with the OpenSSL library. You
* must comply with the Server Side Public License in all respects for
* all of the code used other than as permitted herein. If you modify file(s)
* with this exception, you may extend this exception to your version of the
* file(s), but you are not obligated to do so. If you do not wish to do so,
* delete this exception statement from your version. If you delete this
* exception statement from all source files in the program, then also delete
* it in the license file.
*/
#include "mongo/logv2/log.h"
#include "mongo/platform/basic.h"
#include "mongo/db/repl/repl_server_parameters_gen.h"
#include "mongo/db/repl/replica_set_aware_service.h"
#define MONGO_LOGV2_DEFAULT_COMPONENT ::mongo::logv2::LogComponent::kDefault
namespace mongo {
namespace {
auto registryDecoration = ServiceContext::declareDecoration<ReplicaSetAwareServiceRegistry>();
} // namespace
ReplicaSetAwareServiceRegistry::~ReplicaSetAwareServiceRegistry() {
invariant(_services.empty());
}
ReplicaSetAwareServiceRegistry& ReplicaSetAwareServiceRegistry::get(
ServiceContext* serviceContext) {
return registryDecoration(serviceContext);
}
void ReplicaSetAwareServiceRegistry::onStartup(OperationContext* opCtx) {
std::for_each(_services.begin(), _services.end(), [&](ReplicaSetAwareInterface* service) {
service->onStartup(opCtx);
});
}
void ReplicaSetAwareServiceRegistry::onSetCurrentConfig(OperationContext* opCtx) {
std::for_each(_services.begin(), _services.end(), [&](ReplicaSetAwareInterface* service) {
service->onSetCurrentConfig(opCtx);
});
}
void ReplicaSetAwareServiceRegistry::onInitialDataAvailable(OperationContext* opCtx,
bool isMajorityDataAvailable) {
std::for_each(_services.begin(), _services.end(), [&](ReplicaSetAwareInterface* service) {
service->onInitialDataAvailable(opCtx, isMajorityDataAvailable);
});
}
void ReplicaSetAwareServiceRegistry::onShutdown() {
std::for_each(_services.begin(), _services.end(), [&](ReplicaSetAwareInterface* service) {
service->onShutdown();
});
}
void ReplicaSetAwareServiceRegistry::onStepUpBegin(OperationContext* opCtx, long long term) {
// Since this method is run during drain mode and can block state transition, generate a warning
// if we are spending too long here.
Timer totalTime{};
ON_BLOCK_EXIT([&] {
auto timeSpent = totalTime.millis();
auto threshold = repl::slowTotalOnStepUpBeginThresholdMS.load();
if (timeSpent > threshold) {
LOGV2(
6699600,
"Duration spent in ReplicaSetAwareServiceRegistry::onStepUpBegin for all services "
"exceeded slowTotalOnStepUpBeginThresholdMS",
"thresholdMillis"_attr = threshold,
"durationMillis"_attr = timeSpent);
}
});
std::for_each(_services.begin(), _services.end(), [&](ReplicaSetAwareInterface* service) {
// Additionally, generate a warning if any individual service is taking too long.
Timer t{};
ON_BLOCK_EXIT([&] {
auto timeSpent = t.millis();
auto threshold = repl::slowServiceOnStepUpBeginThresholdMS.load();
if (timeSpent > threshold) {
LOGV2(6699601,
"Duration spent in ReplicaSetAwareServiceRegistry::onStepUpBegin "
"for service exceeded slowServiceOnStepUpBeginThresholdMS",
"thresholdMillis"_attr = threshold,
"durationMillis"_attr = timeSpent,
"serviceName"_attr = service->getServiceName());
}
});
service->onStepUpBegin(opCtx, term);
});
}
void ReplicaSetAwareServiceRegistry::onStepUpComplete(OperationContext* opCtx, long long term) {
// Since this method is called before we mark the node writable in
// ReplicationCoordinatorImpl::signalDrainComplete and therefore can block the new primary from
// starting to receive writes, generate a warning if we are spending too long here.
Timer totalTime{};
ON_BLOCK_EXIT([&] {
auto timeSpent = totalTime.millis();
auto threshold = repl::slowTotalOnStepUpCompleteThresholdMS.load();
if (timeSpent > threshold) {
LOGV2(6699602,
"Duration spent in ReplicaSetAwareServiceRegistry::onStepUpComplete "
"for all services exceeded slowTotalOnStepUpCompleteThresholdMS",
"thresholdMills"_attr = threshold,
"durationMillis"_attr = timeSpent);
}
});
std::for_each(_services.begin(), _services.end(), [&](ReplicaSetAwareInterface* service) {
// Additionally, generate a warning if any individual service is taking too long.
Timer t{};
ON_BLOCK_EXIT([&] {
auto timeSpent = t.millis();
auto threshold = repl::slowServiceOnStepUpCompleteThresholdMS.load();
if (timeSpent > threshold) {
LOGV2(6699603,
"Duration spent in ReplicaSetAwareServiceRegistry::onStepUpComplete "
"for service exceeded slowServiceOnStepUpCompleteThresholdMS",
"thresholdMills"_attr = threshold,
"durationMillis"_attr = timeSpent,
"serviceName"_attr = service->getServiceName());
}
});
service->onStepUpComplete(opCtx, term);
});
}
void ReplicaSetAwareServiceRegistry::onStepDown() {
std::for_each(_services.begin(), _services.end(), [](ReplicaSetAwareInterface* service) {
service->onStepDown();
});
}
void ReplicaSetAwareServiceRegistry::onBecomeArbiter() {
std::for_each(_services.begin(), _services.end(), [](ReplicaSetAwareInterface* service) {
service->onBecomeArbiter();
});
}
void ReplicaSetAwareServiceRegistry::_registerService(ReplicaSetAwareInterface* service) {
_services.push_back(service);
}
void ReplicaSetAwareServiceRegistry::_unregisterService(ReplicaSetAwareInterface* service) {
auto it = std::find(_services.begin(), _services.end(), service);
invariant(it != _services.end());
_services.erase(it);
}
} // namespace mongo
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