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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.
*/
#include "mongo/platform/basic.h"
#include <string>
#include <vector>
#include "mongo/bson/bsonobjbuilder.h"
#include "mongo/client/connpool.h"
#include "mongo/client/dbclient_connection.h"
#include "mongo/client/global_conn_pool.h"
#include "mongo/db/auth/authorization_session.h"
#include "mongo/db/commands.h"
#include "mongo/db/repl/replication_coordinator.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/grid.h"
namespace mongo {
namespace {
class PoolStats final : public BasicCommand {
public:
PoolStats() : BasicCommand("connPoolStats") {}
std::string help() const override {
return "stats about connections between servers in a replica set or sharded cluster.";
}
AllowedOnSecondary secondaryAllowed(ServiceContext*) const override {
return AllowedOnSecondary::kAlways;
}
bool supportsWriteConcern(const BSONObj& cmd) const override {
return false;
}
Status checkAuthForOperation(OperationContext* opCtx,
const DatabaseName& dbName,
const BSONObj& cmdObj) const override {
auto* as = AuthorizationSession::get(opCtx->getClient());
if (!as->isAuthorizedForActionsOnResource(ResourcePattern::forClusterResource(),
ActionType::connPoolStats)) {
return {ErrorCodes::Unauthorized, "unauthorized"};
}
return Status::OK();
}
bool run(OperationContext* opCtx,
const DatabaseName&,
const mongo::BSONObj& cmdObj,
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 any
{
auto const replCoord = repl::ReplicationCoordinator::get(opCtx);
if (replCoord && replCoord->isReplEnabled()) {
replCoord->appendConnectionStats(&stats);
}
}
// Sharding connections, if we have any
{
auto const grid = Grid::get(opCtx);
if (grid->getExecutorPool()) {
grid->getExecutorPool()->appendConnectionStats(&stats);
}
auto const customConnPoolStatsFn = grid->getCustomConnectionPoolStatsFn();
if (customConnPoolStatsFn) {
customConnPoolStatsFn(&stats);
}
}
// Output to a BSON object.
stats.appendToBSON(result);
// Always report all replica sets being tracked.
ReplicaSetMonitorManager::get()->report(&result);
return true;
}
} poolStatsCmd;
} // namespace
} // namespace mongo
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