77 lines
3.1 KiB
C++
77 lines
3.1 KiB
C++
/*
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* TSSMappingUtil.actor.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 2013-2022 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 "fdbclient/SystemData.h"
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#include "fdbclient/KeyBackedTypes.h"
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#include "fdbserver/TSSMappingUtil.actor.h"
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#include "flow/actorcompiler.h" // This must be the last #include.
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ACTOR Future<Void> readTSSMappingRYW(Reference<ReadYourWritesTransaction> tr,
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std::map<UID, StorageServerInterface>* tssMapping) {
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KeyBackedMap<UID, UID> tssMapDB = KeyBackedMap<UID, UID>(tssMappingKeys.begin);
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state KeyBackedMap<UID, UID>::RangeResultType uidMapping =
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wait(tssMapDB.getRange(tr, UID(), Optional<UID>(), CLIENT_KNOBS->TOO_MANY));
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ASSERT(uidMapping.results.size() < CLIENT_KNOBS->TOO_MANY);
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state std::map<UID, StorageServerInterface> mapping;
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state std::vector<std::pair<UID, UID>>::iterator mapItr;
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for (mapItr = uidMapping.results.begin(); mapItr != uidMapping.results.end(); ++mapItr) {
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state UID ssId = mapItr->first;
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Optional<Value> v = wait(tr->get(serverListKeyFor(mapItr->second)));
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(*tssMapping)[ssId] = decodeServerListValue(v.get());
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}
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return Void();
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}
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ACTOR Future<Void> readTSSMapping(Transaction* tr, std::map<UID, StorageServerInterface>* tssMapping) {
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state RangeResult mappingList = wait(tr->getRange(tssMappingKeys, CLIENT_KNOBS->TOO_MANY));
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ASSERT(!mappingList.more && mappingList.size() < CLIENT_KNOBS->TOO_MANY);
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for (auto& it : mappingList) {
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state UID ssId = TupleCodec<UID>::unpack(it.key.removePrefix(tssMappingKeys.begin));
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UID tssId = TupleCodec<UID>::unpack(it.value);
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Optional<Value> v = wait(tr->get(serverListKeyFor(tssId)));
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(*tssMapping)[ssId] = decodeServerListValue(v.get());
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}
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return Void();
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}
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ACTOR Future<Void> removeTSSPairsFromCluster(Database cx, std::vector<std::pair<UID, UID>> pairsToRemove) {
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state Reference<ReadYourWritesTransaction> tr = makeReference<ReadYourWritesTransaction>(cx);
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state KeyBackedMap<UID, UID> tssMapDB = KeyBackedMap<UID, UID>(tssMappingKeys.begin);
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loop {
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try {
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tr->setOption(FDBTransactionOptions::PRIORITY_SYSTEM_IMMEDIATE);
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tr->setOption(FDBTransactionOptions::ACCESS_SYSTEM_KEYS);
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for (auto& tssPair : pairsToRemove) {
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// DO NOT remove server list key - that'll break a bunch of stuff. DD will eventually call
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// removeStorageServer
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tr->clear(serverTagKeyFor(tssPair.second));
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tssMapDB.erase(tr, tssPair.first);
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}
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wait(tr->commit());
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break;
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} catch (Error& e) {
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wait(tr->onError(e));
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}
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}
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return Void();
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}
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