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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::kStorage
#include "mongo/platform/basic.h"
#include "mongo/db/storage/wiredtiger/wiredtiger_parameters.h"
#include "mongo/logger/parse_log_component_settings.h"
#include "mongo/util/log.h"
#include "mongo/util/mongoutils/str.h"
namespace mongo {
using std::string;
WiredTigerEngineRuntimeConfigParameter::WiredTigerEngineRuntimeConfigParameter(
WiredTigerKVEngine* engine)
: ServerParameter(
ServerParameterSet::getGlobal(), "wiredTigerEngineRuntimeConfig", false, true),
_engine(engine) {}
void WiredTigerEngineRuntimeConfigParameter::append(OperationContext* opCtx,
BSONObjBuilder& b,
const std::string& name) {
b << name << _currentValue;
}
Status WiredTigerEngineRuntimeConfigParameter::set(const BSONElement& newValueElement) {
try {
return setFromString(newValueElement.String());
} catch (const AssertionException& msg) {
return Status(
ErrorCodes::BadValue,
mongoutils::str::stream()
<< "Invalid value for wiredTigerEngineRuntimeConfig via setParameter command: "
<< newValueElement
<< ", exception: "
<< msg.what());
}
}
Status WiredTigerEngineRuntimeConfigParameter::setFromString(const std::string& str) {
size_t pos = str.find('\0');
if (pos != std::string::npos) {
return Status(ErrorCodes::BadValue,
(str::stream()
<< "WiredTiger configuration strings cannot have embedded null characters. "
"Embedded null found at position "
<< pos));
}
log() << "Reconfiguring WiredTiger storage engine with config string: \"" << str << "\"";
int ret = _engine->reconfigure(str.c_str());
if (ret != 0) {
string result =
(mongoutils::str::stream() << "WiredTiger reconfiguration failed with error code ("
<< ret
<< "): "
<< wiredtiger_strerror(ret));
error() << result;
return Status(ErrorCodes::BadValue, result);
}
_currentValue = str;
return Status::OK();
}
}
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