66 lines
1.9 KiB
C++
66 lines
1.9 KiB
C++
/*
|
|
* StorageServerUtils.cpp
|
|
*
|
|
* This source file is part of the FoundationDB open source project
|
|
*
|
|
* Copyright 2013-2023 Apple Inc. and the FoundationDB project authors
|
|
*
|
|
* Licensed under the Apache License, Version 2.0 (the "License");
|
|
* you may not use this file except in compliance with the License.
|
|
* You may obtain a copy of the License at
|
|
*
|
|
* http://www.apache.org/licenses/LICENSE-2.0
|
|
*
|
|
* Unless required by applicable law or agreed to in writing, software
|
|
* distributed under the License is distributed on an "AS IS" BASIS,
|
|
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
|
|
* See the License for the specific language governing permissions and
|
|
* limitations under the License.
|
|
*/
|
|
|
|
#include "fdbserver/StorageServerUtils.h"
|
|
|
|
#define PERSIST_PREFIX "\xff\xff"
|
|
|
|
namespace {
|
|
const KeyRangeRef persistMoveInShardKeys =
|
|
KeyRangeRef(PERSIST_PREFIX "MoveInShards/"_sr, PERSIST_PREFIX "MoveInShards0"_sr);
|
|
const KeyRef persistMoveInUpdatesPrefix = PERSIST_PREFIX "MoveInShardUpdates/"_sr;
|
|
} // namespace
|
|
|
|
KeyRange persistMoveInShardsKeyRange() {
|
|
return persistMoveInShardKeys;
|
|
}
|
|
|
|
KeyRange persistUpdatesKeyRange(const UID& id) {
|
|
BinaryWriter wr(Unversioned());
|
|
wr.serializeBytes(persistMoveInUpdatesPrefix);
|
|
wr << id;
|
|
wr.serializeBytes("/"_sr);
|
|
return prefixRange(wr.toValue());
|
|
}
|
|
|
|
Key persistMoveInShardKey(const UID& id) {
|
|
BinaryWriter wr(Unversioned());
|
|
wr.serializeBytes(persistMoveInShardKeys.begin);
|
|
wr << id;
|
|
return wr.toValue();
|
|
}
|
|
|
|
UID decodeMoveInShardKey(const KeyRef& key) {
|
|
UID id;
|
|
BinaryReader rd(key.removePrefix(persistMoveInShardKeys.begin), Unversioned());
|
|
rd >> id;
|
|
return id;
|
|
}
|
|
|
|
Value moveInShardValue(const MoveInShardMetaData& meta) {
|
|
return ObjectWriter::toValue(meta, IncludeVersion());
|
|
}
|
|
|
|
MoveInShardMetaData decodeMoveInShardValue(const ValueRef& value) {
|
|
MoveInShardMetaData shard;
|
|
ObjectReader reader(value.begin(), IncludeVersion());
|
|
reader.deserialize(shard);
|
|
return shard;
|
|
} |