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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::kFTDC
#include "mongo/platform/basic.h"
#include "mongo/db/ftdc/ftdc_mongos.h"
#include <boost/filesystem.hpp>
#include "mongo/client/connpool.h"
#include "mongo/client/dbclient_connection.h"
#include "mongo/client/global_conn_pool.h"
#include "mongo/db/ftdc/controller.h"
#include "mongo/db/ftdc/ftdc_server.h"
#include "mongo/db/repl/replication_coordinator.h"
#include "mongo/executor/connection_pool_stats.h"
#include "mongo/executor/task_executor_pool.h"
#include "mongo/s/grid.h"
#include "mongo/stdx/thread.h"
#include "mongo/util/log.h"
#include "mongo/util/synchronized_value.h"
namespace mongo {
class ConnPoolStatsCollector : public FTDCCollectorInterface {
public:
void collect(OperationContext* opCtx, BSONObjBuilder& builder) override {
executor::ConnectionPoolStats stats{};
// Global connection pool connections.
globalConnPool.appendConnectionStats(&stats);
// Sharding connections.
{
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.
builder.appendNumber("numClientConnections", DBClientConnection::getNumConnections());
builder.appendNumber("numAScopedConnections", AScopedConnection::getNumConnections());
stats.appendToBSON(builder, true /* forFTDC */);
// All replica sets being tracked.
globalRSMonitorManager.report(&builder, true /* forFTDC */);
}
std::string name() const override {
return "connPoolStats";
}
};
void registerMongoSCollectors(FTDCController* controller) {
// PoolStats
controller->addPeriodicCollector(std::make_unique<ConnPoolStatsCollector>());
}
void startMongoSFTDC() {
// Get the path to use for FTDC:
// 1. Check if the user set one.
// 2. If not, check if the user has a logpath and derive one.
// 3. Otherwise, tell the user FTDC cannot run.
// Only attempt to enable FTDC if we have a path to log files to.
FTDCStartMode startMode = FTDCStartMode::kStart;
auto directory = getFTDCDirectoryPathParameter();
if (directory.empty()) {
if (serverGlobalParams.logpath.empty()) {
warning() << "FTDC is disabled because neither '--logpath' nor set parameter "
"'diagnosticDataCollectionDirectoryPath' are specified.";
startMode = FTDCStartMode::kSkipStart;
} else {
directory = boost::filesystem::absolute(
FTDCUtil::getMongoSPath(serverGlobalParams.logpath), serverGlobalParams.cwd);
// Note: If the computed FTDC directory conflicts with an existing file, then FTDC will
// warn about the conflict, and not startup. It will not terminate MongoS in this
// situation.
}
}
startFTDC(directory, startMode, registerMongoSCollectors);
}
void stopMongoSFTDC() {
stopFTDC();
}
} // namespace mongo
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