383 lines
17 KiB
C++
383 lines
17 KiB
C++
/*
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* TagPartitionedLogSystem.actor.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 2013-2018 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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#if defined(NO_INTELLISENSE) && !defined(FDBSERVER_TAGPARTITIONEDLOGSYSTEM_ACTOR_G_H)
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#define FDBSERVER_TAGPARTITIONEDLOGSYSTEM_ACTOR_G_H
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#include "fdbserver/TagPartitionedLogSystem.actor.g.h"
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#elif !defined(FDBSERVER_TAGPARTITIONEDLOGSYSTEM_ACTOR_H)
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#define FDBSERVER_TAGPARTITIONEDLOGSYSTEM_ACTOR_H
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#pragma once
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#include "fdbclient/SystemData.h"
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#include "fdbrpc/Replication.h"
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#include "fdbrpc/ReplicationUtils.h"
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#include "fdbrpc/simulator.h"
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#include "fdbserver/DBCoreState.h"
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#include "fdbserver/Knobs.h"
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#include "fdbserver/LogProtocolMessage.h"
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#include "fdbserver/LogSystem.h"
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#include "fdbserver/RecoveryState.h"
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#include "fdbserver/ServerDBInfo.h"
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#include "fdbserver/WaitFailure.h"
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#include "flow/ActorCollection.h"
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#include "flow/actorcompiler.h" // This must be the last #include.
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// TagPartitionedLogSystem info in old epoch
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struct OldLogData {
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std::vector<Reference<LogSet>> tLogs;
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int32_t logRouterTags;
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int32_t txsTags; // The number of txsTags, which may change across generations.
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Version epochBegin, epochEnd;
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std::set<int8_t> pseudoLocalities;
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LogEpoch epoch;
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OldLogData() : logRouterTags(0), txsTags(0), epochBegin(0), epochEnd(0), epoch(0) {}
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// Constructor for T of OldTLogConf and OldTLogCoreData
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template <class T>
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explicit OldLogData(const T& conf)
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: logRouterTags(conf.logRouterTags), txsTags(conf.txsTags), epochBegin(conf.epochBegin), epochEnd(conf.epochEnd),
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pseudoLocalities(conf.pseudoLocalities), epoch(conf.epoch) {
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tLogs.resize(conf.tLogs.size());
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for (int j = 0; j < conf.tLogs.size(); j++) {
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auto logSet = makeReference<LogSet>(conf.tLogs[j]);
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tLogs[j] = logSet;
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}
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}
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};
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struct LogLockInfo {
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Version epochEnd;
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bool isCurrent;
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Reference<LogSet> logSet;
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std::vector<Future<TLogLockResult>> replies;
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LogLockInfo() : epochEnd(std::numeric_limits<Version>::max()), isCurrent(false) {}
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};
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struct TagPartitionedLogSystem final : ILogSystem, ReferenceCounted<TagPartitionedLogSystem> {
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const UID dbgid;
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LogSystemType logSystemType;
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std::vector<Reference<LogSet>> tLogs; // LogSets in different locations: primary, satellite, or remote
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int expectedLogSets;
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int logRouterTags;
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int txsTags;
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UID recruitmentID;
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int repopulateRegionAntiQuorum;
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bool stopped;
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std::set<int8_t> pseudoLocalities; // Represent special localities that will be mapped to tagLocalityLogRouter
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const LogEpoch epoch;
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LogEpoch oldestBackupEpoch;
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// new members
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std::map<Tag, Version> pseudoLocalityPopVersion;
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Future<Void> rejoins;
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Future<Void> recoveryComplete;
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Future<Void> remoteRecovery;
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Future<Void> remoteRecoveryComplete;
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std::vector<LogLockInfo> lockResults;
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AsyncVar<bool> recoveryCompleteWrittenToCoreState;
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bool remoteLogsWrittenToCoreState;
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bool hasRemoteServers;
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AsyncTrigger backupWorkerChanged;
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std::set<UID> removedBackupWorkers; // Workers that are removed before setting them.
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Optional<Version> recoverAt;
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Optional<Version> recoveredAt;
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Version knownCommittedVersion;
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Version backupStartVersion = invalidVersion; // max(tLogs[0].startVersion, previous epochEnd).
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LocalityData locality;
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// For each currently running popFromLog actor, outstandingPops is
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// (logID, tag)->(max popped version, durableKnownCommittedVersion).
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// Why do we need durableKnownCommittedVersion? knownCommittedVersion gives the lower bound of what data
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// will need to be copied into the next generation to restore the replication factor.
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// Guess: It probably serves as a minimum version of what data should be on a TLog in the next generation and
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// sending a pop for anything less than durableKnownCommittedVersion for the TLog will be absurd.
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std::map<std::pair<UID, Tag>, std::pair<Version, Version>> outstandingPops;
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Optional<PromiseStream<Future<Void>>> addActor;
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ActorCollection popActors;
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std::vector<OldLogData> oldLogData; // each element has the log info. in one old epoch.
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AsyncTrigger logSystemConfigChanged;
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TagPartitionedLogSystem(UID dbgid,
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LocalityData locality,
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LogEpoch e,
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Optional<PromiseStream<Future<Void>>> addActor = Optional<PromiseStream<Future<Void>>>())
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: dbgid(dbgid), logSystemType(LogSystemType::empty), expectedLogSets(0), logRouterTags(0), txsTags(0),
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repopulateRegionAntiQuorum(0), stopped(false), epoch(e), oldestBackupEpoch(0),
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recoveryCompleteWrittenToCoreState(false), remoteLogsWrittenToCoreState(false), hasRemoteServers(false),
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locality(locality), addActor(addActor), popActors(false) {}
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void stopRejoins() final;
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void addref() final;
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void delref() final;
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std::string describe() const final;
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UID getDebugID() const final;
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void addPseudoLocality(int8_t locality);
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Tag getPseudoPopTag(Tag tag, ProcessClass::ClassType type) const final;
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bool hasPseudoLocality(int8_t locality) const final;
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// Return the min version of all pseudoLocalities, i.e., logRouter and backupTag
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Version popPseudoLocalityTag(Tag tag, Version upTo) final;
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static Future<Void> recoverAndEndEpoch(Reference<AsyncVar<Reference<ILogSystem>>> const& outLogSystem,
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UID const& dbgid,
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DBCoreState const& oldState,
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FutureStream<TLogRejoinRequest> const& rejoins,
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LocalityData const& locality,
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bool* forceRecovery);
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static Reference<ILogSystem> fromLogSystemConfig(UID const& dbgid,
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LocalityData const& locality,
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LogSystemConfig const& lsConf,
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bool excludeRemote,
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bool useRecoveredAt,
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Optional<PromiseStream<Future<Void>>> addActor);
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static Reference<ILogSystem> fromOldLogSystemConfig(UID const& dbgid,
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LocalityData const& locality,
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LogSystemConfig const& lsConf);
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// Convert TagPartitionedLogSystem to DBCoreState and override input newState as return value
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void toCoreState(DBCoreState& newState) final;
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bool remoteStorageRecovered() final;
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Future<Void> onCoreStateChanged() final;
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void coreStateWritten(DBCoreState const& newState) final;
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Future<Void> onError() final;
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ACTOR static Future<Void> onError_internal(TagPartitionedLogSystem* self);
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ACTOR static Future<Void> pushResetChecker(Reference<ConnectionResetInfo> self, NetworkAddress addr);
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ACTOR static Future<TLogCommitReply> recordPushMetrics(Reference<ConnectionResetInfo> self,
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Reference<Histogram> dist,
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NetworkAddress addr,
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Future<TLogCommitReply> in);
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Future<Version> push(Version prevVersion,
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Version version,
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Version knownCommittedVersion,
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Version minKnownCommittedVersion,
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LogPushData& data,
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SpanID const& spanContext,
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Optional<UID> debugID) final;
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Reference<IPeekCursor> peekAll(UID dbgid, Version begin, Version end, Tag tag, bool parallelGetMore);
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Reference<IPeekCursor> peekRemote(UID dbgid, Version begin, Optional<Version> end, Tag tag, bool parallelGetMore);
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Reference<IPeekCursor> peek(UID dbgid, Version begin, Optional<Version> end, Tag tag, bool parallelGetMore) final;
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Reference<IPeekCursor> peek(UID dbgid,
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Version begin,
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Optional<Version> end,
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std::vector<Tag> tags,
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bool parallelGetMore) final;
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Reference<IPeekCursor> peekLocal(UID dbgid,
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Tag tag,
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Version begin,
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Version end,
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bool useMergePeekCursors,
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int8_t peekLocality = tagLocalityInvalid);
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Reference<IPeekCursor> peekTxs(UID dbgid,
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Version begin,
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int8_t peekLocality,
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Version localEnd,
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bool canDiscardPopped) final;
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Reference<IPeekCursor> peekSingle(UID dbgid,
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Version begin,
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Tag tag,
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std::vector<std::pair<Version, Tag>> history) final;
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// LogRouter or BackupWorker use this function to obtain a cursor for peeking tlogs of a generation (i.e., epoch).
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// Specifically, the epoch is determined by looking up "dbgid" in tlog sets of generations.
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// The returned cursor can peek data at the "tag" from the given "begin" version to that epoch's end version or
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// the recovery version for the latest old epoch. For the current epoch, the cursor has no end version.
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Reference<IPeekCursor> peekLogRouter(UID dbgid, Version begin, Tag tag) final;
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Version getKnownCommittedVersion() final;
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Future<Void> onKnownCommittedVersionChange() final;
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void popLogRouter(Version upTo, Tag tag, Version durableKnownCommittedVersion, int8_t popLocality);
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void popTxs(Version upTo, int8_t popLocality) final;
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// pop 'tag.locality' type data up to the 'upTo' version
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void pop(Version upTo, Tag tag, Version durableKnownCommittedVersion, int8_t popLocality) final;
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// pop tag from log up to the version defined in self->outstandingPops[].first
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ACTOR static Future<Void> popFromLog(TagPartitionedLogSystem* self,
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Reference<AsyncVar<OptionalInterface<TLogInterface>>> log,
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Tag tag,
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double time);
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ACTOR static Future<Version> getPoppedFromTLog(Reference<AsyncVar<OptionalInterface<TLogInterface>>> log, Tag tag);
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ACTOR static Future<Version> getPoppedTxs(TagPartitionedLogSystem* self);
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Future<Version> getTxsPoppedVersion() final;
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ACTOR static Future<Void> confirmEpochLive_internal(Reference<LogSet> logSet, Optional<UID> debugID);
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// Returns success after confirming that pushes in the current epoch are still possible
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Future<Void> confirmEpochLive(Optional<UID> debugID) final;
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Future<Void> endEpoch() final;
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// Call only after end_epoch() has successfully completed. Returns a new epoch immediately following this one.
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// The new epoch is only provisional until the caller updates the coordinated DBCoreState.
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Future<Reference<ILogSystem>> newEpoch(RecruitFromConfigurationReply const& recr,
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Future<RecruitRemoteFromConfigurationReply> const& fRemoteWorkers,
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DatabaseConfiguration const& config,
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LogEpoch recoveryCount,
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int8_t primaryLocality,
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int8_t remoteLocality,
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std::vector<Tag> const& allTags,
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Reference<AsyncVar<bool>> const& recruitmentStalled) final;
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LogSystemConfig getLogSystemConfig() const final;
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Standalone<StringRef> getLogsValue() const final;
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Future<Void> onLogSystemConfigChange() final;
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Version getEnd() const final;
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Version getPeekEnd() const;
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void getPushLocations(VectorRef<Tag> tags, std::vector<int>& locations, bool allLocations) const final;
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bool hasRemoteLogs() const final;
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Tag getRandomRouterTag() const final;
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Tag getRandomTxsTag() const final;
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TLogVersion getTLogVersion() const final;
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int getLogRouterTags() const final;
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Version getBackupStartVersion() const final;
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std::map<LogEpoch, ILogSystem::EpochTagsVersionsInfo> getOldEpochTagsVersionsInfo() const final;
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inline Reference<LogSet> getEpochLogSet(LogEpoch epoch) const;
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void setBackupWorkers(const std::vector<InitializeBackupReply>& replies) final;
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bool removeBackupWorker(const BackupWorkerDoneRequest& req) final;
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LogEpoch getOldestBackupEpoch() const final;
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void setOldestBackupEpoch(LogEpoch epoch) final;
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ACTOR static Future<Void> monitorLog(Reference<AsyncVar<OptionalInterface<TLogInterface>>> logServer,
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Reference<AsyncVar<bool>> failed);
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Optional<std::pair<Version, Version>> static getDurableVersion(
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UID dbgid,
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LogLockInfo lockInfo,
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std::vector<Reference<AsyncVar<bool>>> failed = std::vector<Reference<AsyncVar<bool>>>(),
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Optional<Version> lastEnd = Optional<Version>());
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ACTOR static Future<Void> getDurableVersionChanged(
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LogLockInfo lockInfo,
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std::vector<Reference<AsyncVar<bool>>> failed = std::vector<Reference<AsyncVar<bool>>>());
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ACTOR static Future<Void> epochEnd(Reference<AsyncVar<Reference<ILogSystem>>> outLogSystem,
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UID dbgid,
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DBCoreState prevState,
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FutureStream<TLogRejoinRequest> rejoinRequests,
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LocalityData locality,
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bool* forceRecovery);
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ACTOR static Future<Void> recruitOldLogRouters(TagPartitionedLogSystem* self,
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std::vector<WorkerInterface> workers,
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LogEpoch recoveryCount,
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int8_t locality,
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Version startVersion,
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std::vector<LocalityData> tLogLocalities,
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Reference<IReplicationPolicy> tLogPolicy,
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bool forRemote);
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static Version getMaxLocalStartVersion(const std::vector<Reference<LogSet>>& tLogs);
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static std::vector<Tag> getLocalTags(int8_t locality, const std::vector<Tag>& allTags);
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ACTOR static Future<Void> newRemoteEpoch(TagPartitionedLogSystem* self,
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Reference<TagPartitionedLogSystem> oldLogSystem,
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Future<RecruitRemoteFromConfigurationReply> fRemoteWorkers,
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DatabaseConfiguration configuration,
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LogEpoch recoveryCount,
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int8_t remoteLocality,
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std::vector<Tag> allTags);
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ACTOR static Future<Reference<ILogSystem>> newEpoch(Reference<TagPartitionedLogSystem> oldLogSystem,
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RecruitFromConfigurationReply recr,
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Future<RecruitRemoteFromConfigurationReply> fRemoteWorkers,
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DatabaseConfiguration configuration,
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LogEpoch recoveryCount,
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int8_t primaryLocality,
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int8_t remoteLocality,
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std::vector<Tag> allTags,
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Reference<AsyncVar<bool>> recruitmentStalled);
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ACTOR static Future<Void> trackRejoins(
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UID dbgid,
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std::vector<std::pair<Reference<AsyncVar<OptionalInterface<TLogInterface>>>, Reference<IReplicationPolicy>>>
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logServers,
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FutureStream<struct TLogRejoinRequest> rejoinRequests);
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ACTOR static Future<TLogLockResult> lockTLog(UID myID, Reference<AsyncVar<OptionalInterface<TLogInterface>>> tlog);
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template <class T>
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static std::vector<T> getReadyNonError(std::vector<Future<T>> const& futures);
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};
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template <class T>
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std::vector<T> TagPartitionedLogSystem::getReadyNonError(std::vector<Future<T>> const& futures) {
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// Return the values of those futures which have (non-error) values ready
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std::vector<T> result;
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for (auto& f : futures)
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if (f.isReady() && !f.isError())
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result.push_back(f.get());
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return result;
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}
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#include "flow/unactorcompiler.h"
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#endif // FDBSERVER_TAGPARTITIONEDLOGSYSTEM_ACTOR_H
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