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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 "mongo/db/storage/storage_options.h"
#include "mongo/db/server_parameters.h"
#include "mongo/platform/compiler.h"
#include "mongo/util/mongoutils/str.h"
namespace mongo {
StorageGlobalParams::StorageGlobalParams() {
reset();
}
void StorageGlobalParams::reset() {
engine = "wiredTiger";
engineSetByUser = false;
dbpath = kDefaultDbPath;
upgrade = false;
repair = false;
// The intention here is to enable the journal by default if we are running on a 64 bit system.
dur = (sizeof(void*) == 8);
noTableScan.store(false);
directoryperdb = false;
syncdelay = 60.0;
readOnly = false;
groupCollections = false;
}
StorageGlobalParams storageGlobalParams;
/**
* The directory where the mongod instance stores its data.
*/
#ifdef _WIN32
const char* StorageGlobalParams::kDefaultDbPath = "\\data\\db\\";
const char* StorageGlobalParams::kDefaultConfigDbPath = "\\data\\configdb\\";
#else
const char* StorageGlobalParams::kDefaultDbPath = "/data/db";
const char* StorageGlobalParams::kDefaultConfigDbPath = "/data/configdb";
#endif
const int StorageGlobalParams::kMaxJournalCommitIntervalMs = 500;
const double StorageGlobalParams::kMaxSyncdelaySecs = 9.0 * 1000.0 * 1000.0;
namespace {
/**
* Specify whether all queries must use indexes.
* If 1, MongoDB will not execute queries that require a table scan and will return an error.
* NOT recommended for production use.
*/
ExportedServerParameter<bool, ServerParameterType::kStartupAndRuntime> NoTableScanSetting(
ServerParameterSet::getGlobal(), "notablescan", &storageGlobalParams.noTableScan);
/**
* Specify the interval in seconds between fsync operations where mongod flushes its
* working memory to disk. By default, mongod flushes memory to disk every 60 seconds.
* In almost every situation you should not set this value and use the default setting.
*/
MONGO_COMPILER_VARIABLE_UNUSED auto _exportedSyncdelay =
(new ExportedServerParameter<double, ServerParameterType::kStartupAndRuntime>(
ServerParameterSet::getGlobal(), "syncdelay", &storageGlobalParams.syncdelay))
-> withValidator([](const double& potentialNewValue) {
if (potentialNewValue < 0.0 ||
potentialNewValue > StorageGlobalParams::kMaxSyncdelaySecs) {
return Status(ErrorCodes::BadValue,
str::stream() << "syncdelay must be between 0 and "
<< StorageGlobalParams::kMaxSyncdelaySecs
<< ", but attempted to set to: "
<< potentialNewValue);
}
return Status::OK();
});
/**
* Specify an integer between 1 and kMaxJournalCommitInterval signifying the number of milliseconds
* (ms) between journal commits.
*/
MONGO_COMPILER_VARIABLE_UNUSED auto _exportedJournalCommitInterval =
(new ExportedServerParameter<int, ServerParameterType::kRuntimeOnly>(
ServerParameterSet::getGlobal(),
"journalCommitInterval",
&storageGlobalParams.journalCommitIntervalMs))
-> withValidator([](const int& potentialNewValue) {
if (potentialNewValue < 1 ||
potentialNewValue > StorageGlobalParams::kMaxJournalCommitIntervalMs) {
return Status(ErrorCodes::BadValue,
str::stream() << "journalCommitInterval must be between 1 and "
<< StorageGlobalParams::kMaxJournalCommitIntervalMs
<< ", but attempted to set to: "
<< potentialNewValue);
}
return Status::OK();
});
} // namespace
} // namespace mongo
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