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/*
* Copyright (C) 2015 MongoDB Inc.
*
* This program is free software: you can redistribute it and/or modify
* it under the terms of the GNU Affero General Public License, version 3,
* as published by the Free Software Foundation.
*
* 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
* GNU Affero General Public License for more details.
*
* You should have received a copy of the GNU Affero General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*
* 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 GNU Affero General 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/platform/basic.h"
#include <string>
#include <vector>
#include "mongo/bson/bsonobjbuilder.h"
#include "mongo/client/connpool.h"
#include "mongo/client/global_conn_pool.h"
#include "mongo/db/commands.h"
#include "mongo/db/repl/replication_coordinator.h"
#include "mongo/db/repl/replication_coordinator_global.h"
#include "mongo/db/s/sharding_state.h"
#include "mongo/db/server_options.h"
#include "mongo/executor/connection_pool_stats.h"
#include "mongo/executor/network_interface_factory.h"
#include "mongo/executor/task_executor_pool.h"
#include "mongo/s/catalog/sharding_catalog_manager.h"
#include "mongo/s/client/shard_registry.h"
#include "mongo/s/grid.h"
namespace mongo {
class PoolStats final : public Command {
public:
PoolStats() : Command("connPoolStats") {}
void help(std::stringstream& help) const override {
help << "stats about connections between servers in a replica set or sharded cluster.";
}
virtual bool supportsWriteConcern(const BSONObj& cmd) const override {
return false;
}
void addRequiredPrivileges(const std::string& dbname,
const BSONObj& cmdObj,
std::vector<Privilege>* out) override {
ActionSet actions;
actions.addAction(ActionType::connPoolStats);
out->push_back(Privilege(ResourcePattern::forClusterResource(), actions));
}
bool run(OperationContext* txn,
const std::string&,
mongo::BSONObj&,
int,
std::string&,
mongo::BSONObjBuilder& result) override {
executor::ConnectionPoolStats stats{};
// Global connection pool connections.
globalConnPool.appendConnectionStats(&stats);
result.appendNumber("numClientConnections", DBClientConnection::getNumConnections());
result.appendNumber("numAScopedConnections", AScopedConnection::getNumConnections());
// Replication connections, if we have them.
auto replCoord = repl::ReplicationCoordinator::get(txn);
if (replCoord && replCoord->isReplEnabled()) {
replCoord->appendConnectionStats(&stats);
}
// Sharding connections, if we have any.
auto grid = Grid::get(txn);
if (grid->shardRegistry()) {
grid->getExecutorPool()->appendConnectionStats(&stats);
if (serverGlobalParams.clusterRole == ClusterRole::ConfigServer) {
grid->catalogManager()->appendConnectionStats(&stats);
}
}
// Output to a BSON object.
stats.appendToBSON(result);
// Always report all replica sets being tracked.
BSONObjBuilder setStats(result.subobjStart("replicaSets"));
globalRSMonitorManager.report(&setStats);
setStats.doneFast();
return true;
}
bool slaveOk() const override {
return true;
}
} poolStatsCmd;
} // namespace mongo
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