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/**
* Copyright (C) 2017 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/logical_time.h"
#include "mongo/base/data_type_endian.h"
#include "mongo/base/data_view.h"
#include "mongo/bson/bsonobj.h"
#include "mongo/bson/bsonobjbuilder.h"
namespace mongo {
namespace {
constexpr auto kOperationTime = "operationTime"_sd;
} // namespace
const LogicalTime LogicalTime::kUninitialized = LogicalTime();
LogicalTime::LogicalTime(Timestamp ts) : _time(ts.asULL()) {}
LogicalTime LogicalTime::fromOperationTime(const BSONObj& obj) {
const auto opTimeElem(obj[kOperationTime]);
uassert(ErrorCodes::FailedToParse, "No operationTime found", !opTimeElem.eoo());
uassert(ErrorCodes::BadValue,
"Operation time is of the wrong value",
opTimeElem.type() == bsonTimestamp);
return LogicalTime(opTimeElem.timestamp());
}
void LogicalTime::appendAsOperationTime(BSONObjBuilder* builder) const {
builder->append(kOperationTime, asTimestamp());
}
void LogicalTime::addTicks(uint64_t ticks) {
_time += ticks;
}
LogicalTime LogicalTime::addTicks(uint64_t ticks) const {
return LogicalTime(Timestamp(_time + ticks));
}
std::string LogicalTime::toString() const {
return toBSON().toString();
}
std::array<unsigned char, sizeof(uint64_t)> LogicalTime::toUnsignedArray() const {
std::array<unsigned char, sizeof(uint64_t)> output;
DataView(reinterpret_cast<char*>(output.data())).write(LittleEndian<uint64_t>{_time});
return output;
}
BSONObj LogicalTime::toBSON() const {
BSONObjBuilder bldr;
bldr.append("ts", asTimestamp());
return bldr.obj();
}
} // namespace mongo
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