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/*
* Copyright (C) 2014 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 "mongo/db/storage/mmap_v1/mmap_v1_options.h"
#include "mongo/bson/util/builder.h"
#include "mongo/db/server_parameters.h"
namespace mongo {
MMAPV1Options mmapv1GlobalOptions;
/**
* Specify an integer between 1 and 500 signifying the number of milliseconds (ms)
* between journal commits.
*/
class JournalCommitIntervalSetting : public ServerParameter {
public:
JournalCommitIntervalSetting()
: ServerParameter(ServerParameterSet::getGlobal(),
"journalCommitInterval",
false, // allowedToChangeAtStartup
true // allowedToChangeAtRuntime
) {}
virtual void append(OperationContext* txn, BSONObjBuilder& b, const std::string& name) {
b << name << mmapv1GlobalOptions.journalCommitInterval;
}
virtual Status set(const BSONElement& newValueElement) {
long long newValue;
if (!newValueElement.isNumber()) {
StringBuilder sb;
sb << "Expected number type for journalCommitInterval via setParameter command: "
<< newValueElement;
return Status(ErrorCodes::BadValue, sb.str());
}
if (newValueElement.type() == NumberDouble &&
(newValueElement.numberDouble() - newValueElement.numberLong()) > 0) {
StringBuilder sb;
sb << "journalCommitInterval must be a whole number: " << newValueElement;
return Status(ErrorCodes::BadValue, sb.str());
}
newValue = newValueElement.numberLong();
if (newValue <= 1 || newValue >= 500) {
StringBuilder sb;
sb << "journalCommitInterval must be between 1 and 500, but attempted to set to: "
<< newValue;
return Status(ErrorCodes::BadValue, sb.str());
}
mmapv1GlobalOptions.journalCommitInterval = static_cast<unsigned>(newValue);
return Status::OK();
}
virtual Status setFromString(const std::string& str) {
unsigned newValue;
Status status = parseNumberFromString(str, &newValue);
if (!status.isOK()) {
return status;
}
if (newValue <= 1 || newValue >= 500) {
StringBuilder sb;
sb << "journalCommitInterval must be between 1 and 500, but attempted to set to: "
<< newValue;
return Status(ErrorCodes::BadValue, sb.str());
}
mmapv1GlobalOptions.journalCommitInterval = newValue;
return Status::OK();
}
} journalCommitIntervalSetting;
} // namespace mongo
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