agent

package
v3.0.0 Latest Latest
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 Go to latest Published: Jan 19, 2021 License: Apache-2.0, MIT Imports: 36 Imported by: 0

Documentation

Index

Constants

This section is empty.

Variables

View Source 
var DisbursedAmount = big.Mul(big.NewInt(41e6), big.NewInt(1e18))

Functions

func BlockstoreCopy 

func BlockstoreCopy(from, to cbor.IpldBlockstore, root cid.Cid) (blocks uint64, copySize uint64, err error)

func PopRandom 

func PopRandom(list []uint64, rnd *rand.Rand) (uint64, []uint64)

this panics if list is empty.

func WinCount 

func WinCount(minerPower abi.StoragePower, totalPower abi.StoragePower, random float64) uint64

This is the Filecoin algorithm for winning a ticket within a block with the tickets replaced with random numbers. It lets miners win according to a Poisson distribution with rate proportional to the miner's fraction of network power.

Types

type Agent 

type Agent interface {
	Tick(v SimState) ([]message, error)
}

type DealClientAgent 

type DealClientAgent struct {
	DealCount int
	// contains filtered or unexported fields
}

func AddDealClientsForAccounts 

func AddDealClientsForAccounts(s SimState, accounts []address.Address, seed int64, config DealClientConfig) []*DealClientAgent

func NewDealClientAgent 

func NewDealClientAgent(account address.Address, seed int64, config DealClientConfig) *DealClientAgent

func (*DealClientAgent) Tick 

func (dca *DealClientAgent) Tick(s SimState) ([]message, error)

type DealClientConfig 

type DealClientConfig struct {
	DealRate         float64         // deals made per epoch
	MinPieceSize     uint64          // minimum piece size (actual piece size be rounded up to power of 2)
	MaxPieceSize     uint64          // maximum piece size
	MinStoragePrice  abi.TokenAmount // minimum price per epoch a client will pay for storage (may be zero)
	MaxStoragePrice  abi.TokenAmount // maximum price per epoch a client will pay for storage
	MinMarketBalance abi.TokenAmount // balance below which client will top up funds in market actor
	MaxMarketBalance abi.TokenAmount // balance to which client will top up funds in market actor
}

type DealProvider 

type DealProvider interface {
	Address() address.Address
	DealRange(currentEpoch abi.ChainEpoch) (start abi.ChainEpoch, end abi.ChainEpoch)
	CreateDeal(proposal market.ClientDealProposal)
	AvailableCollateral() abi.TokenAmount
}

type MinerAgent 

type MinerAgent struct {
	Config        MinerAgentConfig // parameters used to define miner prior to creation
	Owner         address.Address
	Worker        address.Address
	IDAddress     address.Address
	RobustAddress address.Address

	// Stats
	UpgradedSectors uint64
	// contains filtered or unexported fields
}

func NewMinerAgent 

func NewMinerAgent(owner address.Address, worker address.Address, idAddress address.Address, robustAddress address.Address,
	rndSeed int64, config MinerAgentConfig,
) *MinerAgent

func (*MinerAgent) Address 

func (ma *MinerAgent) Address() address.Address

func (*MinerAgent) AvailableCollateral 

func (ma *MinerAgent) AvailableCollateral() abi.TokenAmount

func (*MinerAgent) CreateDeal 

func (ma *MinerAgent) CreateDeal(proposal market.ClientDealProposal)

func (*MinerAgent) DealRange 

func (ma *MinerAgent) DealRange(currentEpoch abi.ChainEpoch) (abi.ChainEpoch, abi.ChainEpoch)

func (*MinerAgent) Tick 

func (ma *MinerAgent) Tick(s SimState) ([]message, error)

type MinerAgentConfig 

type MinerAgentConfig struct {
	PrecommitRate    float64                 // average number of PreCommits per epoch
	ProofType        abi.RegisteredSealProof // seal proof type for this miner
	StartingBalance  abi.TokenAmount         // initial actor balance for miner actor
	FaultRate        float64                 // rate at which committed sectors go faulty (faults per committed sector per epoch)
	RecoveryRate     float64                 // rate at which faults are recovered (recoveries per fault per epoch)
	MinMarketBalance abi.TokenAmount         // balance below which miner will top up funds in market actor
	MaxMarketBalance abi.TokenAmount         // balance to which miner will top up funds in market actor
	UpgradeSectors   bool                    // if true, miner will replace sectors without deals with sectors that do
}

type MinerGenerator 

type MinerGenerator struct {
	// contains filtered or unexported fields
}

MinerGenerator adds miner agents to the simulation at a configured rate. When triggered to add a new miner, it: * Selects the next owner address from the accounts it has been given. * Sends a createMiner message from that account * Handles the response by creating a MinerAgent with MinerAgentConfig and registering it in the sim.

func NewMinerGenerator 

func NewMinerGenerator(accounts []address.Address, config MinerAgentConfig, createMinerRate float64, rndSeed int64) *MinerGenerator

func (*MinerGenerator) Tick 

func (mg *MinerGenerator) Tick(_ SimState) ([]message, error)

type RateIterator 

type RateIterator struct {
	// contains filtered or unexported fields
}

RateIterator can be used to model poisson process (a process with discreet events occurring at arbitrary times with a specified average rate). It's Tick function must be called at regular intervals with a function that will be called zero or more times to produce the event distribution at the correct rate.

func NewRateIterator 

func NewRateIterator(rate float64, seed int64) *RateIterator

func (*RateIterator) Tick 

func (ri *RateIterator) Tick(f func() error) error

simulate random occurrences by calling the given function once for each event that would land in this epoch. The function will be called `rate` times on average, but may be called zero or many times in any Tick.

func (*RateIterator) TickWithRate 

func (ri *RateIterator) TickWithRate(rate float64, f func() error) error

TickWithRate permits a variable rate. If the rate has changed, it will compute a new next occurrence before running tick. This prevents having to wait a long time to recognize a change from a very slow rate to a higher one.

type Sim 

type Sim struct {
	Config        SimConfig
	Agents        []Agent
	DealProviders []DealProvider
	WinCount      uint64
	MessageCount  uint64
	// contains filtered or unexported fields
}

Sim is a simulation framework to exercise actor code in a network-like environment. It's goal is to simulate realistic call sequences and interactions to perform invariant analysis and test performance assumptions prior to shipping actor code out to implementations. The model is that the simulation will "Tick" once per epoch. Within this tick: * It will first compute winning tickets from previous state for miners to simulate block mining. * It will create any agents it is configured to create and generate messages to create their associated actors. * It will call tick on all it agents. This call will return messages that will get added to the simulated "tipset". * Messages will be shuffled to simulate network entropy. * Messages will be applied and an new VM will be created from the resulting state tree for the next tick.

func NewSim 

func NewSim(ctx context.Context, t testing.TB, blockstoreFactory func() ipldcbor.IpldBlockstore, config SimConfig) *Sim

func (*Sim) AddAgent 

func (s *Sim) AddAgent(a Agent)

func (*Sim) AddDealProvider 

func (s *Sim) AddDealProvider(d DealProvider)

func (*Sim) ChooseDealProvider 

func (s *Sim) ChooseDealProvider() DealProvider

func (*Sim) GetCallStats 

func (s *Sim) GetCallStats() map[vm.MethodKey]*vm.CallStats

func (*Sim) GetEpoch 

func (s *Sim) GetEpoch() abi.ChainEpoch

func (*Sim) GetState 

func (s *Sim) GetState(addr address.Address, out cbor.Unmarshaler) error

func (*Sim) GetVM 

func (s *Sim) GetVM() *vm.VM

func (*Sim) NetworkCirculatingSupply 

func (s *Sim) NetworkCirculatingSupply() abi.TokenAmount

func (*Sim) Store 

func (s *Sim) Store() adt.Store

func (*Sim) Tick 

func (s *Sim) Tick() error

type SimConfig 

type SimConfig struct {
	AccountCount           int
	AccountInitialBalance  abi.TokenAmount
	Seed                   int64
	CreateMinerProbability float32
	CheckpointEpochs       uint64
}

type SimState 

type SimState interface {
	GetEpoch() abi.ChainEpoch
	GetState(addr address.Address, out cbor.Unmarshaler) error
	Store() adt.Store
	AddAgent(a Agent)
	AddDealProvider(d DealProvider)
	NetworkCirculatingSupply() abi.TokenAmount

	// randomly select an agent capable of making deals.
	// Returns nil if no providers exist.
	ChooseDealProvider() DealProvider
}

Source Files

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