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foundationdb/fdbrpc/simulator.h

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/*
* simulator.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.
*/
#ifndef FLOW_SIMULATOR_H
#define FLOW_SIMULATOR_H
#include "flow/ProtocolVersion.h"
#include <string>
#pragma once
#include "flow/flow.h"
#include "flow/Histogram.h"
#include "fdbrpc/FailureMonitor.h"
#include "fdbrpc/Locality.h"
#include "fdbrpc/IAsyncFile.h"
#include "flow/TDMetric.actor.h"
#include <random>
#include "fdbrpc/ReplicationPolicy.h"
enum ClogMode { ClogDefault, ClogAll, ClogSend, ClogReceive };
class ISimulator : public INetwork {
public:
ISimulator()
: desiredCoordinators(1), physicalDatacenters(1), processesPerMachine(0), listenersPerProcess(1),
extraDB(nullptr), usableRegions(1), allowLogSetKills(true), tssMode(TSSMode::Disabled), isStopped(false),
lastConnectionFailure(0), connectionFailuresDisableDuration(0), speedUpSimulation(false),
backupAgents(BackupAgentType::WaitForType), drAgents(BackupAgentType::WaitForType), allSwapsDisabled(false) {}
// Order matters!
enum KillType {
KillInstantly,
InjectFaults,
FailDisk,
RebootAndDelete,
RebootProcessAndDelete,
Reboot,
RebootProcess,
None
};
// Order matters! all modes >= 2 are fault injection modes
enum TSSMode { Disabled, EnabledNormal, EnabledAddDelay, EnabledDropMutations };
enum class BackupAgentType { NoBackupAgents, WaitForType, BackupToFile, BackupToDB };
// Subclasses may subclass ProcessInfo as well
struct MachineInfo;
struct ProcessInfo : NonCopyable {
const char* name;
const char* coordinationFolder;
const char* dataFolder;
MachineInfo* machine;
NetworkAddressList addresses;
NetworkAddress address;
LocalityData locality;
ProcessClass startingClass;
TDMetricCollection tdmetrics;
ChaosMetrics chaosMetrics;
HistogramRegistry histograms;
std::map<NetworkAddress, Reference<IListener>> listenerMap;
std::map<NetworkAddress, Reference<IUDPSocket>> boundUDPSockets;
bool failed;
bool excluded;
bool cleared;
bool rebooting;
std::vector<flowGlobalType> globals;
INetworkConnections* network;
uint64_t fault_injection_r;
double fault_injection_p1, fault_injection_p2;
bool failedDisk;
UID uid;
ProtocolVersion protocolVersion;
ProcessInfo(const char* name,
LocalityData locality,
ProcessClass startingClass,
NetworkAddressList addresses,
INetworkConnections* net,
const char* dataFolder,
const char* coordinationFolder)
: name(name), coordinationFolder(coordinationFolder), dataFolder(dataFolder), machine(nullptr),
addresses(addresses), address(addresses.address), locality(locality), startingClass(startingClass),
failed(false), excluded(false), cleared(false), rebooting(false), network(net), fault_injection_r(0),
fault_injection_p1(0), fault_injection_p2(0), failedDisk(false) {
uid = deterministicRandom()->randomUniqueID();
}
Future<KillType> onShutdown() { return shutdownSignal.getFuture(); }
bool isReliable() const {
return !failed && fault_injection_p1 == 0 && fault_injection_p2 == 0 && !failedDisk &&
(!machine || (machine->machineProcess->fault_injection_p1 == 0 &&
machine->machineProcess->fault_injection_p2 == 0));
}
bool isAvailable() const { return !isExcluded() && isReliable(); }
bool isExcluded() const { return excluded; }
bool isCleared() const { return cleared; }
std::string getReliableInfo() const {
std::stringstream ss;
ss << "failed:" << failed << " fault_injection_p1:" << fault_injection_p1
<< " fault_injection_p2:" << fault_injection_p2;
return ss.str();
}
// Return true if the class type is suitable for stateful roles, such as tLog and StorageServer.
bool isAvailableClass() const {
switch (startingClass._class) {
case ProcessClass::UnsetClass:
return true;
case ProcessClass::StorageClass:
return true;
case ProcessClass::TransactionClass:
return true;
case ProcessClass::ResolutionClass:
return false;
case ProcessClass::CommitProxyClass:
return false;
case ProcessClass::GrvProxyClass:
return false;
case ProcessClass::MasterClass:
return false;
case ProcessClass::TesterClass:
return false;
case ProcessClass::StatelessClass:
return false;
case ProcessClass::LogClass:
return true;
case ProcessClass::LogRouterClass:
return false;
case ProcessClass::ClusterControllerClass:
return false;
case ProcessClass::DataDistributorClass:
return false;
case ProcessClass::RatekeeperClass:
return false;
case ProcessClass::BlobManagerClass:
return false;
case ProcessClass::StorageCacheClass:
return false;
case ProcessClass::BackupClass:
return false;
case ProcessClass::EncryptKeyProxyClass:
return false;
default:
return false;
}
}
Reference<IListener> getListener(const NetworkAddress& addr) const {
auto listener = listenerMap.find(addr);
ASSERT(listener != listenerMap.end());
return listener->second;
}
inline flowGlobalType global(int id) const { return (globals.size() > id) ? globals[id] : nullptr; };
inline void setGlobal(size_t id, flowGlobalType v) {
globals.resize(std::max(globals.size(), id + 1));
globals[id] = v;
};
std::string toString() const {
return format(
"name: %s address: %s zone: %s datahall: %s class: %s excluded: %d cleared: %d",
name,
formatIpPort(addresses.address.ip, addresses.address.port).c_str(),
(locality.zoneId().present() ? locality.zoneId().get().printable().c_str() : "[unset]"),
(locality.dataHallId().present() ? locality.dataHallId().get().printable().c_str() : "[unset]"),
startingClass.toString().c_str(),
excluded,
cleared);
}
// Members not for external use
Promise<KillType> shutdownSignal;
};
// A set of data associated with a simulated machine
struct MachineInfo {
ProcessInfo* machineProcess;
std::vector<ProcessInfo*> processes;
// A map from filename to file handle for all open files on a machine
std::map<std::string, UnsafeWeakFutureReference<IAsyncFile>> openFiles;
std::set<std::string> deletingFiles;
std::set<std::string> closingFiles;
Optional<Standalone<StringRef>> machineId;
MachineInfo() : machineProcess(nullptr) {}
};
ProcessInfo* getProcess(Endpoint const& endpoint) { return getProcessByAddress(endpoint.getPrimaryAddress()); }
ProcessInfo* getCurrentProcess() { return currentProcess; }
ProcessInfo const* getCurrentProcess() const { return currentProcess; }
// onProcess: wait for the process to be scheduled by the runloop; a task will be created for the process.
virtual Future<Void> onProcess(ISimulator::ProcessInfo* process, TaskPriority taskID = TaskPriority::Zero) = 0;
virtual Future<Void> onMachine(ISimulator::ProcessInfo* process, TaskPriority taskID = TaskPriority::Zero) = 0;
virtual ProcessInfo* newProcess(const char* name,
IPAddress ip,
uint16_t port,
bool sslEnabled,
uint16_t listenPerProcess,
LocalityData locality,
ProcessClass startingClass,
const char* dataFolder,
const char* coordinationFolder,
ProtocolVersion protocol) = 0;
virtual void killProcess(ProcessInfo* machine, KillType) = 0;
virtual void rebootProcess(Optional<Standalone<StringRef>> zoneId, bool allProcesses) = 0;
virtual void rebootProcess(ProcessInfo* process, KillType kt) = 0;
virtual void killInterface(NetworkAddress address, KillType) = 0;
virtual bool killMachine(Optional<Standalone<StringRef>> machineId,
KillType kt,
bool forceKill = false,
KillType* ktFinal = nullptr) = 0;
virtual bool killZone(Optional<Standalone<StringRef>> zoneId,
KillType kt,
bool forceKill = false,
KillType* ktFinal = nullptr) = 0;
virtual bool killDataCenter(Optional<Standalone<StringRef>> dcId,
KillType kt,
bool forceKill = false,
KillType* ktFinal = nullptr) = 0;
// virtual KillType getMachineKillState( UID zoneID ) = 0;
virtual bool canKillProcesses(std::vector<ProcessInfo*> const& availableProcesses,
std::vector<ProcessInfo*> const& deadProcesses,
KillType kt,
KillType* newKillType) const = 0;
virtual bool isAvailable() const = 0;
virtual bool datacenterDead(Optional<Standalone<StringRef>> dcId) const = 0;
virtual void displayWorkers() const;
ProtocolVersion protocolVersion() const override = 0;
void addRole(NetworkAddress const& address, std::string const& role) {
roleAddresses[address][role]++;
TraceEvent("RoleAdd")
.detail("Address", address)
.detail("Role", role)
.detail("NumRoles", roleAddresses[address].size())
.detail("Value", roleAddresses[address][role]);
}
void removeRole(NetworkAddress const& address, std::string const& role) {
auto addressIt = roleAddresses.find(address);
if (addressIt != roleAddresses.end()) {
auto rolesIt = addressIt->second.find(role);
if (rolesIt != addressIt->second.end()) {
if (rolesIt->second > 1) {
rolesIt->second--;
TraceEvent("RoleRemove")
.detail("Address", address)
.detail("Role", role)
.detail("NumRoles", addressIt->second.size())
.detail("Value", rolesIt->second)
.detail("Result", "Decremented Role");
} else {
addressIt->second.erase(rolesIt);
if (addressIt->second.size()) {
TraceEvent("RoleRemove")
.detail("Address", address)
.detail("Role", role)
.detail("NumRoles", addressIt->second.size())
.detail("Value", 0)
.detail("Result", "Removed Role");
} else {
roleAddresses.erase(addressIt);
TraceEvent("RoleRemove")
.detail("Address", address)
.detail("Role", role)
.detail("NumRoles", 0)
.detail("Value", 0)
.detail("Result", "Removed Address");
}
}
} else {
TraceEvent(SevWarn, "RoleRemove")
.detail("Address", address)
.detail("Role", role)
.detail("Result", "Role Missing");
}
} else {
TraceEvent(SevWarn, "RoleRemove")
.detail("Address", address)
.detail("Role", role)
.detail("Result", "Address Missing");
}
}
std::string getRoles(NetworkAddress const& address, bool skipWorkers = true) const {
auto addressIt = roleAddresses.find(address);
std::string roleText;
if (addressIt != roleAddresses.end()) {
for (auto& roleIt : addressIt->second) {
if ((!skipWorkers) || (roleIt.first != "Worker"))
roleText += roleIt.first + ((roleIt.second > 1) ? format("-%d ", roleIt.second) : " ");
}
}
if (roleText.empty())
roleText = "[unset]";
return roleText;
}
void clearAddress(NetworkAddress const& address) {
clearedAddresses[address]++;
TraceEvent("ClearAddress").detail("Address", address).detail("Value", clearedAddresses[address]);
}
bool isCleared(NetworkAddress const& address) const {
return clearedAddresses.find(address) != clearedAddresses.end();
}
void excludeAddress(NetworkAddress const& address) {
excludedAddresses[address]++;
TraceEvent("ExcludeAddress").detail("Address", address).detail("Value", excludedAddresses[address]);
}
void includeAddress(NetworkAddress const& address) {
auto addressIt = excludedAddresses.find(address);
if (addressIt != excludedAddresses.end()) {
if (addressIt->second > 1) {
addressIt->second--;
TraceEvent("IncludeAddress")
.detail("Address", address)
.detail("Value", addressIt->second)
.detail("Result", "Decremented");
} else {
excludedAddresses.erase(addressIt);
TraceEvent("IncludeAddress").detail("Address", address).detail("Value", 0).detail("Result", "Removed");
}
} else {
TraceEvent(SevWarn, "IncludeAddress").detail("Address", address).detail("Result", "Missing");
}
}
void includeAllAddresses() {
TraceEvent("IncludeAddressAll").detail("AddressTotal", excludedAddresses.size());
excludedAddresses.clear();
}
bool isExcluded(NetworkAddress const& address) const {
return excludedAddresses.find(address) != excludedAddresses.end();
}
void disableSwapToMachine(Optional<Standalone<StringRef>> zoneId) { swapsDisabled.insert(zoneId); }
void enableSwapToMachine(Optional<Standalone<StringRef>> zoneId) {
swapsDisabled.erase(zoneId);
allSwapsDisabled = false;
}
bool canSwapToMachine(Optional<Standalone<StringRef>> zoneId) const {
return swapsDisabled.count(zoneId) == 0 && !allSwapsDisabled && !extraDB;
}
void enableSwapsToAll() {
swapsDisabled.clear();
allSwapsDisabled = false;
}
void disableSwapsToAll() {
swapsDisabled.clear();
allSwapsDisabled = true;
}
virtual void clogInterface(const IPAddress& ip, double seconds, ClogMode mode = ClogDefault) = 0;
virtual void clogPair(const IPAddress& from, const IPAddress& to, double seconds) = 0;
virtual std::vector<ProcessInfo*> getAllProcesses() const = 0;
virtual ProcessInfo* getProcessByAddress(NetworkAddress const& address) = 0;
virtual MachineInfo* getMachineByNetworkAddress(NetworkAddress const& address) = 0;
virtual MachineInfo* getMachineById(Optional<Standalone<StringRef>> const& machineId) = 0;
void run() override {}
virtual void destroyProcess(ProcessInfo* p) = 0;
virtual void destroyMachine(Optional<Standalone<StringRef>> const& machineId) = 0;
int desiredCoordinators;
int physicalDatacenters;
int processesPerMachine;
int listenersPerProcess;
std::set<NetworkAddress> protectedAddresses;
std::map<NetworkAddress, ProcessInfo*> currentlyRebootingProcesses;
class ClusterConnectionString* extraDB;
Reference<IReplicationPolicy> storagePolicy;
Reference<IReplicationPolicy> tLogPolicy;
int32_t tLogWriteAntiQuorum;
Optional<Standalone<StringRef>> primaryDcId;
Reference<IReplicationPolicy> remoteTLogPolicy;
int32_t usableRegions;
std::string disablePrimary;
std::string disableRemote;
std::string originalRegions;
std::string startingDisabledConfiguration;
bool allowLogSetKills;
Optional<Standalone<StringRef>> remoteDcId;
bool hasSatelliteReplication;
Reference<IReplicationPolicy> satelliteTLogPolicy;
Reference<IReplicationPolicy> satelliteTLogPolicyFallback;
int32_t satelliteTLogWriteAntiQuorum;
int32_t satelliteTLogWriteAntiQuorumFallback;
std::vector<Optional<Standalone<StringRef>>> primarySatelliteDcIds;
std::vector<Optional<Standalone<StringRef>>> remoteSatelliteDcIds;
TSSMode tssMode;
std::map<NetworkAddress, bool> corruptWorkerMap;
ConfigDBType configDBType;
// Used by workloads that perform reconfigurations
int testerCount;
std::string connectionString;
bool isStopped;
double lastConnectionFailure;
double connectionFailuresDisableDuration;
bool speedUpSimulation;
BackupAgentType backupAgents;
BackupAgentType drAgents;
bool restarted = false;
bool hasDiffProtocolProcess; // true if simulator is testing a process with a different version
bool setDiffProtocol; // true if a process with a different protocol version has been started
bool allowStorageMigrationTypeChange = false;
flowGlobalType global(int id) const final { return getCurrentProcess()->global(id); };
void setGlobal(size_t id, flowGlobalType v) final { getCurrentProcess()->setGlobal(id, v); };
void disableFor(const std::string& desc, double time) { disabledMap[desc] = time; }
double checkDisabled(const std::string& desc) const {
auto iter = disabledMap.find(desc);
if (iter != disabledMap.end()) {
return iter->second;
}
return 0;
}
static thread_local ProcessInfo* currentProcess;
bool checkInjectedCorruption() {
auto iter = corruptWorkerMap.find(currentProcess->address);
if (iter != corruptWorkerMap.end())
return iter->second;
return false;
}
protected:
Mutex mutex;
private:
std::set<Optional<Standalone<StringRef>>> swapsDisabled;
std::map<NetworkAddress, int> excludedAddresses;
std::map<NetworkAddress, int> clearedAddresses;
std::map<NetworkAddress, std::map<std::string, int>> roleAddresses;
std::map<std::string, double> disabledMap;
bool allSwapsDisabled;
};
// Quickly make existing code work that expects g_simulator to be of class type (not a pointer)
extern ISimulator* g_pSimulator;
#define g_simulator (*g_pSimulator)
void startNewSimulator(bool printSimTime);
// Parameters used to simulate disk performance
struct DiskParameters : ReferenceCounted<DiskParameters> {
double nextOperation;
int64_t iops;
int64_t bandwidth;
DiskParameters(int64_t iops, int64_t bandwidth) : nextOperation(0), iops(iops), bandwidth(bandwidth) {}
};
// Simulates delays for performing operations on disk
extern Future<Void> waitUntilDiskReady(Reference<DiskParameters> parameters, int64_t size, bool sync = false);
class Sim2FileSystem : public IAsyncFileSystem {
public:
// Opens a file for asynchronous I/O
Future<Reference<class IAsyncFile>> open(const std::string& filename, int64_t flags, int64_t mode) override;
// Deletes the given file. If mustBeDurable, returns only when the file is guaranteed to be deleted even after a
// power failure.
Future<Void> deleteFile(const std::string& filename, bool mustBeDurable) override;
Future<std::time_t> lastWriteTime(const std::string& filename) override;
#ifdef ENABLE_SAMPLING
ActorLineageSet& getActorLineageSet() override;
#endif
Future<Void> renameFile(std::string const& from, std::string const& to) override;
Sim2FileSystem() {}
~Sim2FileSystem() override {}
static void newFileSystem();
#ifdef ENABLE_SAMPLING
ActorLineageSet actorLineageSet;
#endif
};
#endif
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