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/**
* Copyright (C) 2018-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.
*/
#define MONGO_LOG_DEFAULT_COMPONENT ::mongo::logger::LogComponent::kSharding
#include "mongo/platform/basic.h"
#include "mongo/s/grid.h"
#include "mongo/db/operation_context.h"
#include "mongo/db/server_options.h"
#include "mongo/executor/task_executor.h"
#include "mongo/executor/task_executor_pool.h"
#include "mongo/logv2/log.h"
#include "mongo/s/balancer_configuration.h"
#include "mongo/s/catalog_cache.h"
#include "mongo/s/client/shard_factory.h"
#include "mongo/s/query/cluster_cursor_manager.h"
namespace mongo {
namespace {
const auto grid = ServiceContext::declareDecoration<Grid>();
} // namespace
Grid::Grid() = default;
Grid::~Grid() = default;
Grid* Grid::get(ServiceContext* serviceContext) {
return &grid(serviceContext);
}
Grid* Grid::get(OperationContext* operationContext) {
return get(operationContext->getServiceContext());
}
void Grid::init(std::unique_ptr<ShardingCatalogClient> catalogClient,
std::unique_ptr<CatalogCache> catalogCache,
std::unique_ptr<ShardRegistry> shardRegistry,
std::unique_ptr<ClusterCursorManager> cursorManager,
std::unique_ptr<BalancerConfiguration> balancerConfig,
std::unique_ptr<executor::TaskExecutorPool> executorPool,
executor::NetworkInterface* network) {
invariant(!_catalogClient);
invariant(!_catalogCache);
invariant(!_shardRegistry);
invariant(!_cursorManager);
invariant(!_balancerConfig);
invariant(!_executorPool);
invariant(!_network);
_catalogClient = std::move(catalogClient);
_catalogCache = std::move(catalogCache);
_shardRegistry = std::move(shardRegistry);
_cursorManager = std::move(cursorManager);
_balancerConfig = std::move(balancerConfig);
_executorPool = std::move(executorPool);
_network = network;
_shardRegistry->init();
}
bool Grid::isShardingInitialized() const {
return _shardingInitialized.load();
}
void Grid::setShardingInitialized() {
invariant(!_shardingInitialized.load());
_shardingInitialized.store(true);
}
Grid::CustomConnectionPoolStatsFn Grid::getCustomConnectionPoolStatsFn() const {
stdx::lock_guard<Latch> lk(_mutex);
return _customConnectionPoolStatsFn;
}
void Grid::setCustomConnectionPoolStatsFn(CustomConnectionPoolStatsFn statsFn) {
stdx::lock_guard<Latch> lk(_mutex);
invariant(!_customConnectionPoolStatsFn || !statsFn);
_customConnectionPoolStatsFn = std::move(statsFn);
}
bool Grid::allowLocalHost() const {
return _allowLocalShard;
}
void Grid::setAllowLocalHost(bool allow) {
_allowLocalShard = allow;
}
repl::OpTime Grid::configOpTime() const {
invariant(serverGlobalParams.clusterRole != ClusterRole::ConfigServer);
stdx::lock_guard<Latch> lk(_mutex);
return _configOpTime;
}
boost::optional<repl::OpTime> Grid::advanceConfigOpTime(OperationContext* opCtx,
repl::OpTime opTime,
StringData what) {
const auto prevOpTime = _advanceConfigOpTime(opTime);
if (prevOpTime && prevOpTime->getTerm() != opTime.getTerm()) {
std::string clientAddr = "(unknown)";
if (opCtx && opCtx->getClient()) {
clientAddr = opCtx->getClient()->clientAddress(true);
}
LOGV2(22792,
"Received {reason} {clientAddress} indicating config server"
" term has increased, previous opTime {prevOpTime}, now {opTime}",
"Term advanced for config server",
"opTime"_attr = opTime,
"prevOpTime"_attr = prevOpTime,
"reason"_attr = what,
"clientAddress"_attr = clientAddr);
}
return prevOpTime;
}
boost::optional<repl::OpTime> Grid::_advanceConfigOpTime(const repl::OpTime& opTime) {
invariant(serverGlobalParams.clusterRole != ClusterRole::ConfigServer);
stdx::lock_guard<Latch> lk(_mutex);
if (_configOpTime < opTime) {
repl::OpTime prev = _configOpTime;
_configOpTime = opTime;
return prev;
}
return boost::none;
}
void Grid::clearForUnitTests() {
_catalogClient.reset();
_catalogCache.reset();
_shardRegistry.reset();
_cursorManager.reset();
_balancerConfig.reset();
_executorPool.reset();
_network = nullptr;
_configOpTime = repl::OpTime();
}
} // namespace mongo
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