44 lines
1.8 KiB
C++
44 lines
1.8 KiB
C++
/*
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* Locality.cpp
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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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#include "fdbrpc/Locality.h"
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const UID LocalityData::UNSET_ID = UID(0x0ccb4e0feddb5583, 0x010f6b77d9d10ece);
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alignas(8) const StringRef LocalityData::keyProcessId = "processid"_sr;
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alignas(8) const StringRef LocalityData::keyZoneId = "zoneid"_sr;
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alignas(8) const StringRef LocalityData::keyDcId = "dcid"_sr;
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alignas(8) const StringRef LocalityData::keyMachineId = "machineid"_sr;
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alignas(8) const StringRef LocalityData::keyDataHallId = "data_hall"_sr;
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alignas(8) const StringRef LocalityData::ExcludeLocalityPrefix = "locality_"_sr;
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LBDistance::Type loadBalanceDistance(LocalityData const& loc1, LocalityData const& loc2, NetworkAddress const& addr2) {
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if (FLOW_KNOBS->LOAD_BALANCE_ZONE_ID_LOCALITY_ENABLED && loc1.zoneId().present() &&
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loc1.zoneId() == loc2.zoneId()) {
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return LBDistance::SAME_MACHINE;
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}
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// FIXME: add this back in when load balancing works with local requests
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// if ( g_network->isAddressOnThisHost( addr2 ) )
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// return LBDistance::SAME_MACHINE;
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if (FLOW_KNOBS->LOAD_BALANCE_DC_ID_LOCALITY_ENABLED && loc1.dcId().present() && loc1.dcId() == loc2.dcId()) {
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return LBDistance::SAME_DC;
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}
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return LBDistance::DISTANT;
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}
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