foundationdb/fdbserver/WorkerInterface.actor.h

/*
 * WorkerInterface.actor.h
 *
 * This source file is part of the FoundationDB open source project
 *
 * Copyright 2013-2018 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.
 */

#pragma once
#if defined(NO_INTELLISENSE) && !defined(FDBSERVER_WORKERINTERFACE_ACTOR_G_H)
	#define FDBSERVER_WORKERINTERFACE_ACTOR_G_H
	#include "fdbserver/WorkerInterface.actor.g.h"
#elif !defined(FDBSERVER_WORKERINTERFACE_ACTOR_H)
	#define FDBSERVER_WORKERINTERFACE_ACTOR_H

#include "fdbserver/BackupInterface.h"
#include "fdbserver/DataDistributorInterface.h"
#include "fdbserver/MasterInterface.h"
#include "fdbserver/TLogInterface.h"
#include "fdbserver/RatekeeperInterface.h"
#include "fdbserver/ResolverInterface.h"
#include "fdbclient/StorageServerInterface.h"
#include "fdbserver/TesterInterface.actor.h"
#include "fdbclient/FDBTypes.h"
#include "fdbserver/LogSystemConfig.h"
#include "fdbrpc/MultiInterface.h"
#include "fdbclient/ClientWorkerInterface.h"
#include "fdbserver/RecoveryState.h"
#include "flow/actorcompiler.h"

struct WorkerInterface {
	constexpr static FileIdentifier file_identifier = 14712718;
	ClientWorkerInterface clientInterface;
	LocalityData locality;
	RequestStream< struct InitializeTLogRequest > tLog;
	RequestStream< struct RecruitMasterRequest > master;
	RequestStream< struct InitializeMasterProxyRequest > masterProxy;
	RequestStream< struct InitializeGrvProxyRequest > grvProxy;
	RequestStream< struct InitializeDataDistributorRequest > dataDistributor;
	RequestStream< struct InitializeRatekeeperRequest > ratekeeper;
	RequestStream< struct InitializeResolverRequest > resolver;
	RequestStream< struct InitializeStorageRequest > storage;
	RequestStream< struct InitializeLogRouterRequest > logRouter;
	RequestStream< struct InitializeBackupRequest > backup;

	RequestStream< struct LoadedPingRequest > debugPing;
	RequestStream< struct CoordinationPingMessage > coordinationPing;
	RequestStream< ReplyPromise<Void> > waitFailure;
	RequestStream< struct SetMetricsLogRateRequest > setMetricsRate;
	RequestStream< struct EventLogRequest > eventLogRequest;
	RequestStream< struct TraceBatchDumpRequest > traceBatchDumpRequest;
	RequestStream< struct DiskStoreRequest > diskStoreRequest;
	RequestStream< struct ExecuteRequest> execReq;
	RequestStream< struct WorkerSnapRequest> workerSnapReq;
	RequestStream< struct UpdateServerDBInfoRequest > updateServerDBInfo;

	TesterInterface testerInterface;

	UID id() const { return tLog.getEndpoint().token; }
	NetworkAddress address() const { return tLog.getEndpoint().getPrimaryAddress(); }
	NetworkAddress stableAddress() const { return tLog.getEndpoint().getStableAddress(); }
	Optional<NetworkAddress> secondaryAddress() const { return tLog.getEndpoint().addresses.secondaryAddress; }
	NetworkAddressList addresses() const { return tLog.getEndpoint().addresses; }

	WorkerInterface() {}
	WorkerInterface( const LocalityData& locality ) : locality( locality ) {}

	void initEndpoints() {
		clientInterface.initEndpoints();
		tLog.getEndpoint( TaskPriority::Worker );
		master.getEndpoint( TaskPriority::Worker );
		masterProxy.getEndpoint( TaskPriority::Worker );
		grvProxy.getEndpoint( TaskPriority::Worker );
		resolver.getEndpoint( TaskPriority::Worker );
		logRouter.getEndpoint( TaskPriority::Worker );
		debugPing.getEndpoint( TaskPriority::Worker );
		coordinationPing.getEndpoint( TaskPriority::Worker );
		updateServerDBInfo.getEndpoint( TaskPriority::Worker );
		eventLogRequest.getEndpoint( TaskPriority::Worker );
	}

	template <class Ar>
	void serialize(Ar& ar) {
		serializer(ar, clientInterface, locality, tLog, master, masterProxy, grvProxy, dataDistributor, ratekeeper, resolver, storage, logRouter, debugPing, coordinationPing, waitFailure, setMetricsRate, eventLogRequest, traceBatchDumpRequest, testerInterface, diskStoreRequest, execReq, workerSnapReq, backup, updateServerDBInfo);
	}
};

struct WorkerDetails {
	constexpr static FileIdentifier file_identifier = 9973980;
	WorkerInterface interf;
	ProcessClass processClass;
	bool degraded;

	WorkerDetails() : degraded(false) {}
	WorkerDetails(const WorkerInterface& interf, ProcessClass processClass, bool degraded) : interf(interf), processClass(processClass), degraded(degraded) {}

	template <class Ar>
	void serialize(Ar& ar) {
		serializer(ar, interf, processClass, degraded);
	}
};

// This interface and its serialization depend on slicing, since the client will deserialize only the first part of this structure
struct ClusterControllerFullInterface {
    constexpr static FileIdentifier file_identifier =
        ClusterControllerClientInterface::file_identifier;
	ClusterInterface clientInterface;
	RequestStream< struct RecruitFromConfigurationRequest > recruitFromConfiguration;
	RequestStream< struct RecruitRemoteFromConfigurationRequest > recruitRemoteFromConfiguration;
	RequestStream< struct RecruitStorageRequest > recruitStorage;
	RequestStream< struct RegisterWorkerRequest > registerWorker;
	RequestStream< struct GetWorkersRequest > getWorkers;
	RequestStream< struct RegisterMasterRequest > registerMaster;
	RequestStream< struct GetServerDBInfoRequest > getServerDBInfo; //only used by testers; the cluster controller will send the serverDBInfo to workers

	UID id() const { return clientInterface.id(); }
	bool operator == (ClusterControllerFullInterface const& r) const { return id() == r.id(); }
	bool operator != (ClusterControllerFullInterface const& r) const { return id() != r.id(); }

	bool hasMessage() {
		return clientInterface.hasMessage() ||
				recruitFromConfiguration.getFuture().isReady() ||
				recruitRemoteFromConfiguration.getFuture().isReady() ||
				recruitStorage.getFuture().isReady() ||
				registerWorker.getFuture().isReady() || 
				getWorkers.getFuture().isReady() || 
				registerMaster.getFuture().isReady() ||
				getServerDBInfo.getFuture().isReady();
	}

	void initEndpoints() {
		clientInterface.initEndpoints();
		recruitFromConfiguration.getEndpoint( TaskPriority::ClusterControllerRecruit );
		recruitRemoteFromConfiguration.getEndpoint( TaskPriority::ClusterControllerRecruit );
		recruitStorage.getEndpoint( TaskPriority::ClusterController );
		registerWorker.getEndpoint( TaskPriority::ClusterControllerWorker );
		getWorkers.getEndpoint( TaskPriority::ClusterController );
		registerMaster.getEndpoint( TaskPriority::ClusterControllerRegister );
		getServerDBInfo.getEndpoint( TaskPriority::ClusterController );
	}

	template <class Ar>
	void serialize(Ar& ar) {
		if constexpr (!is_fb_function<Ar>) {
			ASSERT(ar.protocolVersion().isValid());
		}
		serializer(ar, clientInterface, recruitFromConfiguration, recruitRemoteFromConfiguration, recruitStorage,
		           registerWorker, getWorkers, registerMaster, getServerDBInfo);
	}
};

struct RegisterWorkerReply {
	constexpr static FileIdentifier file_identifier = 16475696;
	ProcessClass processClass;
	ClusterControllerPriorityInfo priorityInfo;

	RegisterWorkerReply() : priorityInfo(ProcessClass::UnsetFit, false, ClusterControllerPriorityInfo::FitnessUnknown) {}
	RegisterWorkerReply(ProcessClass processClass, ClusterControllerPriorityInfo priorityInfo) : processClass(processClass), priorityInfo(priorityInfo) {}

	template <class Ar>
	void serialize( Ar& ar ) {
		serializer(ar, processClass, priorityInfo);
	}
};

struct RegisterMasterRequest {
	constexpr static FileIdentifier file_identifier = 10773445;
	UID id;
	LocalityData mi;
	LogSystemConfig logSystemConfig;
	std::vector<MasterProxyInterface> masterProxies;
	std::vector<GrvProxyInterface> grvProxies;
	std::vector<ResolverInterface> resolvers;
	DBRecoveryCount recoveryCount;
	int64_t registrationCount;
	Optional<DatabaseConfiguration> configuration;
	std::vector<UID> priorCommittedLogServers;
	RecoveryState recoveryState;
	bool recoveryStalled;

	ReplyPromise<Void> reply;

	RegisterMasterRequest() : logSystemConfig(0) {}

	template <class Ar>
	void serialize(Ar& ar) {
		if constexpr (!is_fb_function<Ar>) {
			ASSERT(ar.protocolVersion().isValid());
		}
		serializer(ar, id, mi, logSystemConfig, masterProxies, grvProxies, resolvers, recoveryCount, registrationCount,
		           configuration, priorCommittedLogServers, recoveryState, recoveryStalled, reply);
	}
};

struct RecruitFromConfigurationReply {
	constexpr static FileIdentifier file_identifier = 2224085;
	std::vector<WorkerInterface> backupWorkers;
	std::vector<WorkerInterface> tLogs;
	std::vector<WorkerInterface> satelliteTLogs;
	std::vector<WorkerInterface> masterProxies;
	std::vector<WorkerInterface> grvProxies;
	std::vector<WorkerInterface> resolvers;
	std::vector<WorkerInterface> storageServers;
	std::vector<WorkerInterface> oldLogRouters;
	Optional<Key> dcId;
	bool satelliteFallback;

	RecruitFromConfigurationReply() : satelliteFallback(false) {}

	template <class Ar>
	void serialize(Ar& ar) {
		serializer(ar, tLogs, satelliteTLogs, masterProxies, grvProxies, resolvers, storageServers, oldLogRouters, dcId,
		           satelliteFallback, backupWorkers);
	}
};

struct RecruitFromConfigurationRequest {
	constexpr static FileIdentifier file_identifier = 2023046;
	DatabaseConfiguration configuration;
	bool recruitSeedServers;
	int maxOldLogRouters;
	ReplyPromise< RecruitFromConfigurationReply > reply;

	RecruitFromConfigurationRequest() {}
	explicit RecruitFromConfigurationRequest(DatabaseConfiguration const& configuration, bool recruitSeedServers, int maxOldLogRouters)
		: configuration(configuration), recruitSeedServers(recruitSeedServers), maxOldLogRouters(maxOldLogRouters) {}

	template <class Ar>
	void serialize( Ar& ar ) {
		serializer(ar, configuration, recruitSeedServers, maxOldLogRouters, reply);
	}
};

struct RecruitRemoteFromConfigurationReply {
	constexpr static FileIdentifier file_identifier = 9091392;
	std::vector<WorkerInterface> remoteTLogs;
	std::vector<WorkerInterface> logRouters;

	template <class Ar>
	void serialize( Ar& ar ) {
		serializer(ar, remoteTLogs, logRouters);
	}
};

struct RecruitRemoteFromConfigurationRequest {
	constexpr static FileIdentifier file_identifier = 3235995;
	DatabaseConfiguration configuration;
	Optional<Key> dcId;
	int logRouterCount;
	std::vector<UID> exclusionWorkerIds;
	ReplyPromise< RecruitRemoteFromConfigurationReply > reply;

	RecruitRemoteFromConfigurationRequest() {}
	RecruitRemoteFromConfigurationRequest(DatabaseConfiguration const& configuration, Optional<Key> const& dcId, int logRouterCount, const std::vector<UID> &exclusionWorkerIds) : configuration(configuration), dcId(dcId), logRouterCount(logRouterCount), exclusionWorkerIds(exclusionWorkerIds){}

	template <class Ar>
	void serialize( Ar& ar ) {
		serializer(ar, configuration, dcId, logRouterCount, exclusionWorkerIds, reply);
	}
};

struct RecruitStorageReply {
	constexpr static FileIdentifier file_identifier = 15877089;
	WorkerInterface worker;
	ProcessClass processClass;

	template <class Ar>
	void serialize( Ar& ar ) {
		serializer(ar, worker, processClass);
	}
};

struct RecruitStorageRequest {
	constexpr static FileIdentifier file_identifier = 905920;
	std::vector<Optional<Standalone<StringRef>>> excludeMachines;	//< Don't recruit any of these machines
	std::vector<AddressExclusion> excludeAddresses;		//< Don't recruit any of these addresses
	std::vector<Optional<Standalone<StringRef>>> includeDCs;
	bool criticalRecruitment;							//< True if machine classes are to be ignored
	ReplyPromise< RecruitStorageReply > reply;

	template <class Ar>
	void serialize( Ar& ar ) {
		serializer(ar, excludeMachines, excludeAddresses, includeDCs, criticalRecruitment, reply);
	}
};

struct RegisterWorkerRequest {
	constexpr static FileIdentifier file_identifier = 14332605;
	WorkerInterface wi;
	ProcessClass initialClass;
	ProcessClass processClass;
	ClusterControllerPriorityInfo priorityInfo;
	Generation generation;
	Optional<DataDistributorInterface> distributorInterf;
	Optional<RatekeeperInterface> ratekeeperInterf;
	Standalone<VectorRef<StringRef>> issues;
	std::vector<NetworkAddress> incompatiblePeers;
	ReplyPromise<RegisterWorkerReply> reply;
	bool degraded;

	RegisterWorkerRequest() : priorityInfo(ProcessClass::UnsetFit, false, ClusterControllerPriorityInfo::FitnessUnknown), degraded(false) {}
	RegisterWorkerRequest(WorkerInterface wi, ProcessClass initialClass, ProcessClass processClass, ClusterControllerPriorityInfo priorityInfo, Generation generation, Optional<DataDistributorInterface> ddInterf, Optional<RatekeeperInterface> rkInterf, bool degraded) :
	wi(wi), initialClass(initialClass), processClass(processClass), priorityInfo(priorityInfo), generation(generation), distributorInterf(ddInterf), ratekeeperInterf(rkInterf), degraded(degraded) {}

	template <class Ar>
	void serialize( Ar& ar ) {
		serializer(ar, wi, initialClass, processClass, priorityInfo, generation, distributorInterf, ratekeeperInterf, issues, incompatiblePeers, reply, degraded);
	}
};

struct GetWorkersRequest {
	constexpr static FileIdentifier file_identifier = 1254174;
	enum { TESTER_CLASS_ONLY = 0x1, NON_EXCLUDED_PROCESSES_ONLY = 0x2 };

	int flags;
	ReplyPromise<vector<WorkerDetails>> reply;

	GetWorkersRequest() : flags(0) {}
	explicit GetWorkersRequest(int fl) : flags(fl) {}

	template <class Ar>
	void serialize(Ar& ar) {
		serializer(ar, flags, reply);
	}
};

struct InitializeTLogRequest {
	constexpr static FileIdentifier file_identifier = 15604392;
	UID recruitmentID;
	LogSystemConfig recoverFrom;
	Version recoverAt;
	Version knownCommittedVersion;
	LogEpoch epoch;
	std::vector<Tag> recoverTags;
	std::vector<Tag> allTags;
	TLogVersion logVersion;
	KeyValueStoreType storeType;
	TLogSpillType spillType;
	Tag remoteTag;
	int8_t locality;
	bool isPrimary;
	Version startVersion;
	int logRouterTags;
	int txsTags;

	ReplyPromise< struct TLogInterface > reply;

	InitializeTLogRequest() : recoverFrom(0) {}

	template <class Ar>
	void serialize( Ar& ar ) {
		serializer(ar, recruitmentID, recoverFrom, recoverAt, knownCommittedVersion, epoch, recoverTags, allTags, storeType, remoteTag, locality, isPrimary, startVersion, logRouterTags, reply, logVersion, spillType, txsTags);
	}
};

struct InitializeLogRouterRequest {
	constexpr static FileIdentifier file_identifier = 2976228;
	uint64_t recoveryCount;
	Tag routerTag;
	Version startVersion;
	std::vector<LocalityData> tLogLocalities;
	Reference<IReplicationPolicy> tLogPolicy;
	int8_t locality;
	ReplyPromise<struct TLogInterface> reply;

	template <class Ar>
	void serialize(Ar& ar) {
		serializer(ar, recoveryCount, routerTag, startVersion, tLogLocalities, tLogPolicy, locality, reply);
	}
};

struct InitializeBackupReply {
	constexpr static FileIdentifier file_identifier = 13511909;
	struct BackupInterface interf;
	LogEpoch backupEpoch;

	InitializeBackupReply() = default;
	InitializeBackupReply(BackupInterface interface, LogEpoch e) : interf(interface), backupEpoch(e) {}

	template <class Ar>
	void serialize(Ar& ar) {
		serializer(ar, interf, backupEpoch);
	}
};

struct InitializeBackupRequest {
	constexpr static FileIdentifier file_identifier = 1245415;
	UID reqId;
	LogEpoch recruitedEpoch; // The epoch the worker is recruited.
	LogEpoch backupEpoch; // The epoch the worker should work on. If different from the recruitedEpoch, then it refers
	                      // to some previous epoch with unfinished work.
	Tag routerTag;
	int totalTags;
	Version startVersion;
	Optional<Version> endVersion;
	ReplyPromise<struct InitializeBackupReply> reply;

	InitializeBackupRequest() = default;
	explicit InitializeBackupRequest(UID id) : reqId(id) {}

	template <class Ar>
	void serialize(Ar& ar) {
		serializer(ar, reqId, recruitedEpoch, backupEpoch, routerTag, totalTags, startVersion, endVersion, reply);
	}
};

// FIXME: Rename to InitializeMasterRequest, etc
struct RecruitMasterRequest {
	constexpr static FileIdentifier file_identifier = 12684574;
	Arena arena;
	LifetimeToken lifetime;
	bool forceRecovery;
	ReplyPromise< struct MasterInterface> reply;

	template <class Ar>
	void serialize(Ar& ar) {
		if constexpr (!is_fb_function<Ar>) {
			ASSERT(ar.protocolVersion().isValid());
		}
		serializer(ar, lifetime, forceRecovery, reply, arena);
	}
};

struct InitializeMasterProxyRequest {
	constexpr static FileIdentifier file_identifier = 10344153;
	MasterInterface master;
	uint64_t recoveryCount;
	Version recoveryTransactionVersion;
	bool firstProxy;
	ReplyPromise<MasterProxyInterface> reply;

	template <class Ar>
	void serialize(Ar& ar) {
		serializer(ar, master, recoveryCount, recoveryTransactionVersion, firstProxy, reply);
	}
};

struct InitializeGrvProxyRequest {
	constexpr static FileIdentifier file_identifier = 8265613;
	MasterInterface master;
	uint64_t recoveryCount;
	ReplyPromise<GrvProxyInterface> reply;

	template <class Ar>
	void serialize(Ar& ar) {
		serializer(ar, master, recoveryCount, reply);
	}
};

struct InitializeDataDistributorRequest {
	constexpr static FileIdentifier file_identifier = 8858952;
	UID reqId;
	ReplyPromise<DataDistributorInterface> reply;

	InitializeDataDistributorRequest() {}
	explicit InitializeDataDistributorRequest(UID uid) : reqId(uid) {}
	template <class Ar>
	void serialize( Ar& ar ) {
		serializer(ar, reqId, reply);
	}
};

struct InitializeRatekeeperRequest {
	constexpr static FileIdentifier file_identifier = 6416816;
	UID reqId;
	ReplyPromise<RatekeeperInterface> reply;

	InitializeRatekeeperRequest() {}
	explicit InitializeRatekeeperRequest(UID uid) : reqId(uid) {}
	template <class Ar>
	void serialize(Ar& ar) {
		serializer(ar, reqId, reply);
	}
};

struct InitializeResolverRequest {
	constexpr static FileIdentifier file_identifier = 7413317;
	uint64_t recoveryCount;
	int proxyCount;
	int resolverCount;
	ReplyPromise<ResolverInterface> reply;

	template <class Ar>
	void serialize(Ar& ar) {
		serializer(ar, recoveryCount, proxyCount, resolverCount, reply);
	}
};

struct InitializeStorageReply {
	constexpr static FileIdentifier file_identifier = 10390645;
	StorageServerInterface interf;
	Version addedVersion;

	template <class Ar>
	void serialize(Ar& ar) {
		serializer(ar, interf, addedVersion);
	}
};

struct InitializeStorageRequest {
	constexpr static FileIdentifier file_identifier = 16665642;
	Tag seedTag;									//< If this server will be passed to seedShardServers, this will be a tag, otherwise it is invalidTag
	UID reqId;
	UID interfaceId;
	KeyValueStoreType storeType;
	ReplyPromise< InitializeStorageReply > reply;

	template <class Ar>
	void serialize( Ar& ar ) {
		serializer(ar, seedTag, reqId, interfaceId, storeType, reply);
	}
};

struct TraceBatchDumpRequest {
	constexpr static FileIdentifier file_identifier = 8184121;
	ReplyPromise<Void> reply;

	template <class Ar>
	void serialize( Ar& ar ) {
		serializer(ar, reply);
	}
};

struct ExecuteRequest {
	constexpr static FileIdentifier file_identifier = 8184128;
	ReplyPromise<Void> reply;

	Arena arena;
	StringRef execPayload;

	ExecuteRequest(StringRef execPayload) : execPayload(execPayload) {}

	ExecuteRequest() : execPayload() {}

	template <class Ar>
	void serialize(Ar& ar) {
		serializer(ar, reply, execPayload, arena);
	}
};

struct WorkerSnapRequest {
	constexpr static FileIdentifier file_identifier = 8194122;
	ReplyPromise<Void> reply;
	Arena arena;
	StringRef snapPayload;
	UID snapUID;
	StringRef role;

	WorkerSnapRequest(StringRef snapPayload, UID snapUID, StringRef role) : snapPayload(snapPayload), snapUID(snapUID), role(role) {}
	WorkerSnapRequest() = default;

	template <class Ar>
	void serialize(Ar& ar) {
		serializer(ar, reply, snapPayload, snapUID, role, arena);
	}
};

struct LoadedReply {
	constexpr static FileIdentifier file_identifier = 9956350;
	Standalone<StringRef> payload;
	UID id;

	template <class Ar>
	void serialize(Ar& ar) {
		serializer(ar, payload, id);
	}
};

struct LoadedPingRequest {
	constexpr static FileIdentifier file_identifier = 4590979;
	UID id;
	bool loadReply;
	Standalone<StringRef> payload;
	ReplyPromise<LoadedReply> reply;

	template <class Ar>
	void serialize(Ar& ar) {
		serializer(ar, id, loadReply, payload, reply);
	}
};

struct CoordinationPingMessage {
	constexpr static FileIdentifier file_identifier = 9982747;
	UID clusterControllerId;
	int64_t timeStep;

	CoordinationPingMessage() : timeStep(0) {}
	CoordinationPingMessage(UID ccId, uint64_t step) : clusterControllerId( ccId ), timeStep( step ) {}

	template <class Ar>
	void serialize(Ar& ar) {
		serializer(ar, clusterControllerId, timeStep);
	}
};

struct SetMetricsLogRateRequest {
	constexpr static FileIdentifier file_identifier = 4245995;
	uint32_t metricsLogsPerSecond;

	SetMetricsLogRateRequest() : metricsLogsPerSecond( 1 ) {}
	explicit SetMetricsLogRateRequest(uint32_t logsPerSecond) : metricsLogsPerSecond( logsPerSecond ) {}

	template <class Ar>
	void serialize(Ar& ar) {
		serializer(ar, metricsLogsPerSecond);
	}
};

struct EventLogRequest {
	constexpr static FileIdentifier file_identifier = 122319;
	bool getLastError;
	Standalone<StringRef> eventName;
	ReplyPromise< TraceEventFields > reply;

	EventLogRequest() : getLastError(true) {}
	explicit EventLogRequest( Standalone<StringRef> eventName ) : eventName( eventName ), getLastError( false ) {}

	template <class Ar>
	void serialize(Ar& ar) {
		serializer(ar, getLastError, eventName, reply);
	}
};

struct DebugEntryRef {
	double time;
	NetworkAddress address;
	StringRef context;
	Version version;
	MutationRef mutation;
	DebugEntryRef() {}
	DebugEntryRef(const char* c, Version v, MutationRef const& m)
	  : context((const uint8_t*)c, strlen(c)), version(v), mutation(m), time(now()),
	    address(g_network->getLocalAddress()) {}
	DebugEntryRef(Arena& a, DebugEntryRef const& d)
	  : time(d.time), address(d.address), context(d.context), version(d.version), mutation(a, d.mutation) {}

	size_t expectedSize() const { return context.expectedSize() + mutation.expectedSize(); }

	template <class Ar>
	void serialize(Ar& ar) {
		serializer(ar, time, address, context, version, mutation);
	}
};

struct DiskStoreRequest {
	constexpr static FileIdentifier file_identifier = 1986262;
	bool includePartialStores;
	ReplyPromise<Standalone<VectorRef<UID>>> reply;

	DiskStoreRequest(bool includePartialStores=false) : includePartialStores(includePartialStores) {}

	template <class Ar>
	void serialize(Ar& ar) {
		serializer(ar, includePartialStores, reply);
	}
};

struct Role {
	static const Role WORKER;
	static const Role STORAGE_SERVER;
	static const Role TRANSACTION_LOG;
	static const Role SHARED_TRANSACTION_LOG;
	static const Role MASTER_PROXY;
	static const Role GRV_PROXY;
	static const Role MASTER;
	static const Role RESOLVER;
	static const Role CLUSTER_CONTROLLER;
	static const Role TESTER;
	static const Role LOG_ROUTER;
	static const Role DATA_DISTRIBUTOR;
	static const Role RATEKEEPER;
	static const Role STORAGE_CACHE;
	static const Role COORDINATOR;
	static const Role BACKUP;

	std::string roleName;
	std::string abbreviation;
	bool includeInTraceRoles;

	bool operator==(const Role &r) const {
		return roleName == r.roleName;
	}
	bool operator!=(const Role &r) const {
		return !(*this == r);
	}

private:
	Role(std::string roleName, std::string abbreviation, bool includeInTraceRoles=true) : roleName(roleName), abbreviation(abbreviation), includeInTraceRoles(includeInTraceRoles) {
		ASSERT(abbreviation.size() == 2); // Having a fixed size makes log queries more straightforward
	}
};

void startRole(const Role &role, UID roleId, UID workerId, const std::map<std::string, std::string> &details = std::map<std::string, std::string>(), const std::string &origination = "Recruited");
void endRole(const Role &role, UID id, std::string reason, bool ok = true, Error e = Error());
ACTOR Future<Void> traceRole(Role role, UID roleId);

struct ServerDBInfo;

class Database openDBOnServer( Reference<AsyncVar<ServerDBInfo>> const& db, TaskPriority taskID = TaskPriority::DefaultEndpoint, bool enableLocalityLoadBalance = true, bool lockAware = false );
ACTOR Future<Void> extractClusterInterface(Reference<AsyncVar<Optional<struct ClusterControllerFullInterface>>> a,
                                           Reference<AsyncVar<Optional<struct ClusterInterface>>> b);

ACTOR Future<Void> fdbd(Reference<ClusterConnectionFile> ccf, LocalityData localities, ProcessClass processClass,
                        std::string dataFolder, std::string coordFolder, int64_t memoryLimit,
                        std::string metricsConnFile, std::string metricsPrefix, int64_t memoryProfilingThreshold,
                        std::string whitelistBinPaths);

ACTOR Future<Void> clusterController(Reference<ClusterConnectionFile> ccf,
                                     Reference<AsyncVar<Optional<ClusterControllerFullInterface>>> currentCC,
                                     Reference<AsyncVar<ClusterControllerPriorityInfo>> asyncPriorityInfo,
                                     Future<Void> recoveredDiskFiles, LocalityData locality);

// These servers are started by workerServer
class IKeyValueStore;
class ServerCoordinators;
class IDiskQueue;
ACTOR Future<Void> storageServer(IKeyValueStore* persistentData, StorageServerInterface ssi, Tag seedTag,
                                 ReplyPromise<InitializeStorageReply> recruitReply,
                                 Reference<AsyncVar<ServerDBInfo>> db, std::string folder);
ACTOR Future<Void> storageServer(IKeyValueStore* persistentData, StorageServerInterface ssi,
                                 Reference<AsyncVar<ServerDBInfo>> db, std::string folder,
                                 Promise<Void> recovered,
                                 Reference<ClusterConnectionFile> connFile );  // changes pssi->id() to be the recovered ID); // changes pssi->id() to be the recovered ID
ACTOR Future<Void> masterServer(MasterInterface mi, Reference<AsyncVar<ServerDBInfo>> db,
                                ServerCoordinators serverCoordinators, LifetimeToken lifetime, bool forceRecovery);
ACTOR Future<Void> masterProxyServer(MasterProxyInterface proxy, InitializeMasterProxyRequest req,
                                     Reference<AsyncVar<ServerDBInfo>> db, std::string whitelistBinPaths);
ACTOR Future<Void> grvProxyServer(GrvProxyInterface proxy, InitializeGrvProxyRequest req, Reference<AsyncVar<ServerDBInfo>> db);
ACTOR Future<Void> tLog(IKeyValueStore* persistentData, IDiskQueue* persistentQueue,
                        Reference<AsyncVar<ServerDBInfo>> db, LocalityData locality,
                        PromiseStream<InitializeTLogRequest> tlogRequests, UID tlogId, UID workerID, 
                        bool restoreFromDisk, Promise<Void> oldLog, Promise<Void> recovered, std::string folder,
                        Reference<AsyncVar<bool>> degraded, Reference<AsyncVar<UID>> activeSharedTLog);
ACTOR Future<Void> resolver(ResolverInterface resolver, InitializeResolverRequest initReq,
                            Reference<AsyncVar<ServerDBInfo>> db);
ACTOR Future<Void> logRouter(TLogInterface interf, InitializeLogRouterRequest req,
                             Reference<AsyncVar<ServerDBInfo>> db);
ACTOR Future<Void> dataDistributor(DataDistributorInterface ddi, Reference<AsyncVar<ServerDBInfo>> db);
ACTOR Future<Void> ratekeeper(RatekeeperInterface rki, Reference<AsyncVar<ServerDBInfo>> db);
ACTOR Future<Void> storageCacheServer(StorageServerInterface interf, uint16_t id, Reference<AsyncVar<ServerDBInfo>> db);
ACTOR Future<Void> backupWorker(BackupInterface bi, InitializeBackupRequest req, Reference<AsyncVar<ServerDBInfo>> db);

void registerThreadForProfiling();
void updateCpuProfiler(ProfilerRequest req);

namespace oldTLog_4_6 {
ACTOR Future<Void> tLog(IKeyValueStore* persistentData, IDiskQueue* persistentQueue,
                        Reference<AsyncVar<ServerDBInfo>> db, LocalityData locality, UID tlogId, UID workerID);
}
namespace oldTLog_6_0 {
ACTOR Future<Void> tLog(IKeyValueStore* persistentData, IDiskQueue* persistentQueue,
                        Reference<AsyncVar<ServerDBInfo>> db, LocalityData locality,
                        PromiseStream<InitializeTLogRequest> tlogRequests, UID tlogId, UID workerID, 
                        bool restoreFromDisk, Promise<Void> oldLog, Promise<Void> recovered, std::string folder,
                        Reference<AsyncVar<bool>> degraded, Reference<AsyncVar<UID>> activeSharedTLog);
}
namespace oldTLog_6_2 {
ACTOR Future<Void> tLog(IKeyValueStore* persistentData, IDiskQueue* persistentQueue,
                        Reference<AsyncVar<ServerDBInfo>> db, LocalityData locality,
                        PromiseStream<InitializeTLogRequest> tlogRequests, UID tlogId, UID workerID,
						bool restoreFromDisk, Promise<Void> oldLog, Promise<Void> recovered, std::string folder,
                        Reference<AsyncVar<bool>> degraded, Reference<AsyncVar<UID>> activeSharedTLog);
}

typedef decltype(&tLog) TLogFn;

#include "fdbserver/ServerDBInfo.h"
#include "flow/unactorcompiler.h"
#endif