59 lines
1.8 KiB
C++
59 lines
1.8 KiB
C++
/*
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* PartitionMapMessage.h
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*
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* This source file is part of the FoundationDB open source project
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*
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* Copyright 2013-2026 Apple Inc. and the FoundationDB project authors
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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#ifndef FDBSERVER_PARTITIONMAPMESSAGE_H
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#define FDBSERVER_PARTITIONMAPMESSAGE_H
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#pragma once
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#include "fdbclient/CommitTransaction.h"
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#include "fdbserver/core/BackupPartitionMap.h"
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struct PartitionMapMessage {
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// Pushed into the transaction logs by the commit proxy to inform backup
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// workers of the per-tag key-range partitioning.
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// Identified by a reserved leading byte so it can be discriminated from
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// mutations on the same stream.
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PartitionMap partitionMap;
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PartitionMapMessage() = default;
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explicit PartitionMapMessage(PartitionMap pm) : partitionMap(std::move(pm)) {}
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std::string toString() const {
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return format("code: %d, num tags: %zu", MutationRef::Reserved_For_PartitionMapMessage, partitionMap.size());
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}
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template <class Ar>
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void serialize(Ar& ar) {
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uint8_t poly = MutationRef::Reserved_For_PartitionMapMessage;
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serializer(ar, poly, partitionMap);
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}
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static bool startsPartitionMapMessage(uint8_t byte) {
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return byte == MutationRef::Reserved_For_PartitionMapMessage;
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}
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template <class Ar>
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static bool isNextIn(Ar& ar) {
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return startsPartitionMapMessage(*(const uint8_t*)ar.peekBytes(1));
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}
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};
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#endif
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