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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.
*/
#pragma once
#include <string>
#include "mongo/db/namespace_string.h"
#include "mongo/s/catalog/type_chunk.h"
namespace mongo {
/**
* Creates and parses commit chunk migration command BSON objects.
*/
struct CommitChunkMigrationRequest {
CommitChunkMigrationRequest(const NamespaceString& nss, const ChunkType& chunk)
: _nss(nss), _migratedChunk(chunk) {}
/**
* Parses the input command and produces a request corresponding to its arguments.
*/
static StatusWith<CommitChunkMigrationRequest> createFromCommand(const NamespaceString& nss,
const BSONObj& obj);
/**
* Constructs a commitChunkMigration command with the specified parameters and writes it to
* the builder, without closing the builder. The builder must be empty, but callers are free
* to append more fields once the command has been constructed.
*/
static void appendAsCommand(BSONObjBuilder* builder,
const NamespaceString& nss,
const ShardId& fromShard,
const ShardId& toShard,
const ChunkType& migratedChunkType,
const ChunkVersion& fromShardChunkVersion,
const Timestamp& validAfter);
const NamespaceString& getNss() const {
return _nss;
}
const ShardId& getFromShard() const {
return _fromShard;
}
const ShardId& getToShard() const {
return _toShard;
}
const ChunkType& getMigratedChunk() const {
return _migratedChunk;
}
const OID& getCollectionEpoch() {
return _collectionEpoch;
}
const boost::optional<Timestamp>& getValidAfter() {
return _validAfter;
}
// The collection for which this request applies.
NamespaceString _nss;
// The source shard name.
ShardId _fromShard;
// The recipient shard name.
ShardId _toShard;
// The chunk being moved.
ChunkType _migratedChunk;
OID _collectionEpoch;
// The time of the move
boost::optional<Timestamp> _validAfter;
};
} // namespace mongo
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