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/**
* Copyright (C) 2022-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.
*/
#pragma once
#include "mongo/s/chunk_version_gen.h"
namespace mongo {
/**
* This class is used to represent the shard version of a collection.
*
* It contains the chunk placement information through the ChunkVersion. This class is used for
* network requests and the shard versioning protocol.
*
*/
class ShardVersion : public ChunkVersion {
public:
/**
* The name for the shard version information field, which shard-aware commands should include
* if they want to convey shard version.
*/
static constexpr StringData kShardVersionField = "shardVersion"_sd;
ShardVersion(ChunkVersion chunkVersion) : ChunkVersion(chunkVersion) {}
ShardVersion() : ShardVersion(ChunkVersion()) {}
static ShardVersion parse(const BSONElement& element) {
auto parsedVersion =
ChunkVersion60Format::parse(IDLParserContext("ShardVersion"), element.Obj());
auto version = parsedVersion.getVersion();
return ShardVersion(ChunkVersion({parsedVersion.getEpoch(), parsedVersion.getTimestamp()},
{version.getSecs(), version.getInc()}));
}
void serialize(StringData field, BSONObjBuilder* builder) const {
ChunkVersion60Format version;
version.setGeneration({_epoch, _timestamp});
version.setPlacement(Timestamp(majorVersion(), minorVersion()));
builder->append(field, version.toBSON());
}
};
} // namespace mongo
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