params

package
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 Go to latest Published: Feb 21, 2024 License: GPL-3.0 Imports: 19 Imported by: 9

Documentation

Overview

Package params defines important constants that are essential to Prysm services.

Index

Constants

View Source 
const (
	AltairE2EForkEpoch    = 6
	BellatrixE2EForkEpoch = 8
	CapellaE2EForkEpoch   = 10
	DenebE2EForkEpoch     = 12
)
View Source 
const (
	DevnetName          = "devnet"
	EndToEndName        = "end-to-end"
	EndToEndMainnetName = "end-to-end-mainnet"
	InteropName         = "interop"
	MainnetName         = "mainnet"
	MainnetTestName     = "mainnet-test"
	MinimalName         = "minimal"
	PraterName          = "prater"
	GoerliName          = "goerli"
	SepoliaName         = "sepolia"
	HoleskyName         = "holesky"
)

Variables

This section is empty.

Functions

func ConfigForkVersions 

func ConfigForkVersions(b *BeaconChainConfig) map[[fieldparams.VersionLength]byte]int

ConfigForkVersions returns a mapping between a fork version param and the version identifier from the runtime/version package.

func ConfigToYaml 

func ConfigToYaml(cfg *BeaconChainConfig) []byte

ConfigToYaml takes a provided config and outputs its contents in yaml. This allows prysm's custom configs to be read by other clients.

func DenebEnabled 

func DenebEnabled() bool

DenebEnabled centralizes the check to determine if code paths that are specific to deneb should be allowed to execute. This will make it easier to find call sites that do this kind of check and remove them post-deneb.

func FillTestVersions 

func FillTestVersions(c *BeaconChainConfig, b byte)

FillTestVersions replaces the fork schedule in the given BeaconChainConfig with test values, using the given byte argument as the high byte (common across forks).

func LoadChainConfigFile 

func LoadChainConfigFile(path string, conf *BeaconChainConfig) error

LoadChainConfigFile load, convert hex values into valid param yaml format, unmarshal , and apply beacon chain config file.

func MaxRequestBlock 

func MaxRequestBlock(e primitives.Epoch) uint64

MaxRequestBlock determines the maximum number of blocks that can be requested in a single request for a given epoch. If the epoch is at or beyond config's `DenebForkEpoch`, a special limit defined for Deneb is used.

func OverrideBeaconConfig 

func OverrideBeaconConfig(c *BeaconChainConfig)

OverrideBeaconConfig by replacing the config. The preferred pattern is to call BeaconConfig(), change the specific parameters, and then call OverrideBeaconConfig(c). Any subsequent calls to params.BeaconConfig() will return this new configuration.

func OverrideBeaconNetworkConfig 

func OverrideBeaconNetworkConfig(cfg *NetworkConfig)

OverrideBeaconNetworkConfig will override the network config with the added argument.

func ReplaceHexStringWithYAMLFormat 

func ReplaceHexStringWithYAMLFormat(line string) []string

ReplaceHexStringWithYAMLFormat will replace hex strings that the yaml parser will understand.

func SetActive 

func SetActive(c *BeaconChainConfig) error

SetActive sets the given config as active (the config that will be returned by GetActive). SetActive will always overwrite any config with the same ConfigName before setting the updated value to active.

func SetActiveTestCleanup 

func SetActiveTestCleanup(t *testing.T, cfg *BeaconChainConfig)

SetActiveTestCleanup sets an active config, and adds a test cleanup hook to revert to the default config after the test completes.

func SetActiveWithUndo 

func SetActiveWithUndo(c *BeaconChainConfig) (func() error, error)

SetActiveWithUndo attempts to set the active config, and if successful, returns a callback function that can be used to revert the configset back to its previous state.

func SetupTestConfigCleanup 

func SetupTestConfigCleanup(t testing.TB)

SetupTestConfigCleanup preserves configurations allowing to modify them within tests without any restrictions, everything is restored after the test.

func UseHoleskyNetworkConfig 

func UseHoleskyNetworkConfig()

UseHoleskyNetworkConfig uses the Holesky beacon chain specific network config.

func UsePraterNetworkConfig 

func UsePraterNetworkConfig()

UsePraterNetworkConfig uses the Prater specific network config.

func UseSepoliaNetworkConfig 

func UseSepoliaNetworkConfig()

UseSepoliaNetworkConfig uses the Sepolia beacon chain specific network config.

func WithinDAPeriod 

func WithinDAPeriod(block, current primitives.Epoch) bool

WithinDAPeriod checks if the block epoch is within MIN_EPOCHS_FOR_BLOB_SIDECARS_REQUESTS of the given current epoch.

Types

type BeaconChainConfig 

type BeaconChainConfig struct {
	// Constants (non-configurable)
	GenesisSlot              primitives.Slot  `yaml:"GENESIS_SLOT"`                // GenesisSlot represents the first canonical slot number of the beacon chain.
	GenesisEpoch             primitives.Epoch `yaml:"GENESIS_EPOCH"`               // GenesisEpoch represents the first canonical epoch number of the beacon chain.
	FarFutureEpoch           primitives.Epoch `yaml:"FAR_FUTURE_EPOCH"`            // FarFutureEpoch represents a epoch extremely far away in the future used as the default penalization epoch for validators.
	FarFutureSlot            primitives.Slot  `yaml:"FAR_FUTURE_SLOT"`             // FarFutureSlot represents a slot extremely far away in the future.
	BaseRewardsPerEpoch      uint64           `yaml:"BASE_REWARDS_PER_EPOCH"`      // BaseRewardsPerEpoch is used to calculate the per epoch rewards.
	DepositContractTreeDepth uint64           `yaml:"DEPOSIT_CONTRACT_TREE_DEPTH"` // DepositContractTreeDepth depth of the Merkle trie of deposits in the validator deposit contract on the PoW chain.
	JustificationBitsLength  uint64           `yaml:"JUSTIFICATION_BITS_LENGTH"`   // JustificationBitsLength defines number of epochs to track when implementing k-finality in Casper FFG.

	// Misc constants.
	PresetBase                     string `yaml:"PRESET_BASE" spec:"true"`                        // PresetBase represents the underlying spec preset this config is based on.
	ConfigName                     string `yaml:"CONFIG_NAME" spec:"true"`                        // ConfigName for allowing an easy human-readable way of knowing what chain is being used.
	TargetCommitteeSize            uint64 `yaml:"TARGET_COMMITTEE_SIZE" spec:"true"`              // TargetCommitteeSize is the number of validators in a committee when the chain is healthy.
	MaxValidatorsPerCommittee      uint64 `yaml:"MAX_VALIDATORS_PER_COMMITTEE" spec:"true"`       // MaxValidatorsPerCommittee defines the upper bound of the size of a committee.
	MaxCommitteesPerSlot           uint64 `yaml:"MAX_COMMITTEES_PER_SLOT" spec:"true"`            // MaxCommitteesPerSlot defines the max amount of committee in a single slot.
	MinPerEpochChurnLimit          uint64 `yaml:"MIN_PER_EPOCH_CHURN_LIMIT" spec:"true"`          // MinPerEpochChurnLimit is the minimum amount of churn allotted for validator rotations.
	ChurnLimitQuotient             uint64 `yaml:"CHURN_LIMIT_QUOTIENT" spec:"true"`               // ChurnLimitQuotient is used to determine the limit of how many validators can rotate per epoch.
	ShuffleRoundCount              uint64 `yaml:"SHUFFLE_ROUND_COUNT" spec:"true"`                // ShuffleRoundCount is used for retrieving the permuted index.
	MinGenesisActiveValidatorCount uint64 `yaml:"MIN_GENESIS_ACTIVE_VALIDATOR_COUNT" spec:"true"` // MinGenesisActiveValidatorCount defines how many validator deposits needed to kick off beacon chain.
	MinGenesisTime                 uint64 `yaml:"MIN_GENESIS_TIME" spec:"true"`                   // MinGenesisTime is the time that needed to pass before kicking off beacon chain.
	TargetAggregatorsPerCommittee  uint64 `yaml:"TARGET_AGGREGATORS_PER_COMMITTEE" spec:"true"`   // TargetAggregatorsPerCommittee defines the number of aggregators inside one committee.
	HysteresisQuotient             uint64 `yaml:"HYSTERESIS_QUOTIENT" spec:"true"`                // HysteresisQuotient defines the hysteresis quotient for effective balance calculations.
	HysteresisDownwardMultiplier   uint64 `yaml:"HYSTERESIS_DOWNWARD_MULTIPLIER" spec:"true"`     // HysteresisDownwardMultiplier defines the hysteresis downward multiplier for effective balance calculations.
	HysteresisUpwardMultiplier     uint64 `yaml:"HYSTERESIS_UPWARD_MULTIPLIER" spec:"true"`       // HysteresisUpwardMultiplier defines the hysteresis upward multiplier for effective balance calculations.

	// Gwei value constants.
	MinDepositAmount          uint64 `yaml:"MIN_DEPOSIT_AMOUNT" spec:"true"`          // MinDepositAmount is the minimum amount of Gwei a validator can send to the deposit contract at once (lower amounts will be reverted).
	MaxEffectiveBalance       uint64 `yaml:"MAX_EFFECTIVE_BALANCE" spec:"true"`       // MaxEffectiveBalance is the maximal amount of Gwei that is effective for staking.
	EjectionBalance           uint64 `yaml:"EJECTION_BALANCE" spec:"true"`            // EjectionBalance is the minimal GWei a validator needs to have before ejected.
	EffectiveBalanceIncrement uint64 `yaml:"EFFECTIVE_BALANCE_INCREMENT" spec:"true"` // EffectiveBalanceIncrement is used for converting the high balance into the low balance for validators.

	// Initial value constants.
	BLSWithdrawalPrefixByte         byte     `yaml:"BLS_WITHDRAWAL_PREFIX" spec:"true"`          // BLSWithdrawalPrefixByte is used for BLS withdrawal and it's the first byte.
	ETH1AddressWithdrawalPrefixByte byte     `yaml:"ETH1_ADDRESS_WITHDRAWAL_PREFIX" spec:"true"` // ETH1AddressWithdrawalPrefixByte is used for withdrawals and it's the first byte.
	ZeroHash                        [32]byte // ZeroHash is used to represent a zeroed out 32 byte array.

	// Time parameters constants.
	GenesisDelay                     uint64           `yaml:"GENESIS_DELAY" spec:"true"`                   // GenesisDelay is the minimum number of seconds to delay starting the Ethereum Beacon Chain genesis. Must be at least 1 second.
	MinAttestationInclusionDelay     primitives.Slot  `yaml:"MIN_ATTESTATION_INCLUSION_DELAY" spec:"true"` // MinAttestationInclusionDelay defines how many slots validator has to wait to include attestation for beacon block.
	SecondsPerSlot                   uint64           `yaml:"SECONDS_PER_SLOT" spec:"true"`                // SecondsPerSlot is how many seconds are in a single slot.
	SlotsPerEpoch                    primitives.Slot  `yaml:"SLOTS_PER_EPOCH" spec:"true"`                 // SlotsPerEpoch is the number of slots in an epoch.
	SqrRootSlotsPerEpoch             primitives.Slot  // SqrRootSlotsPerEpoch is a hard coded value where we take the square root of `SlotsPerEpoch` and round down.
	MinSeedLookahead                 primitives.Epoch `yaml:"MIN_SEED_LOOKAHEAD" spec:"true"`                  // MinSeedLookahead is the duration of randao look ahead seed.
	MaxSeedLookahead                 primitives.Epoch `yaml:"MAX_SEED_LOOKAHEAD" spec:"true"`                  // MaxSeedLookahead is the duration a validator has to wait for entry and exit in epoch.
	EpochsPerEth1VotingPeriod        primitives.Epoch `yaml:"EPOCHS_PER_ETH1_VOTING_PERIOD" spec:"true"`       // EpochsPerEth1VotingPeriod defines how often the merkle root of deposit receipts get updated in beacon node on per epoch basis.
	SlotsPerHistoricalRoot           primitives.Slot  `yaml:"SLOTS_PER_HISTORICAL_ROOT" spec:"true"`           // SlotsPerHistoricalRoot defines how often the historical root is saved.
	MinValidatorWithdrawabilityDelay primitives.Epoch `yaml:"MIN_VALIDATOR_WITHDRAWABILITY_DELAY" spec:"true"` // MinValidatorWithdrawabilityDelay is the shortest amount of time a validator has to wait to withdraw.
	ShardCommitteePeriod             primitives.Epoch `yaml:"SHARD_COMMITTEE_PERIOD" spec:"true"`              // ShardCommitteePeriod is the minimum amount of epochs a validator must participate before exiting.
	MinEpochsToInactivityPenalty     primitives.Epoch `yaml:"MIN_EPOCHS_TO_INACTIVITY_PENALTY" spec:"true"`    // MinEpochsToInactivityPenalty defines the minimum amount of epochs since finality to begin penalizing inactivity.
	Eth1FollowDistance               uint64           `yaml:"ETH1_FOLLOW_DISTANCE" spec:"true"`                // Eth1FollowDistance is the number of eth1.0 blocks to wait before considering a new deposit for voting. This only applies after the chain as been started.
	SecondsPerETH1Block              uint64           `yaml:"SECONDS_PER_ETH1_BLOCK" spec:"true"`              // SecondsPerETH1Block is the approximate time for a single eth1 block to be produced.

	// Fork choice algorithm constants.
	ProposerScoreBoost              uint64           `yaml:"PROPOSER_SCORE_BOOST" spec:"true"`                // ProposerScoreBoost defines a value that is a % of the committee weight for fork-choice boosting.
	ReorgWeightThreshold            uint64           `yaml:"REORG_WEIGHT_THRESHOLD" spec:"true"`              // ReorgWeightThreshold defines a value that is a % of the committee weight to consider a block weak and subject to being orphaned.
	ReorgParentWeightThreshold      uint64           `yaml:"REORG_PARENT_WEIGHT_THRESHOLD" spec:"true"`       // ReorgParentWeightThreshold defines a value that is a % of the committee weight to consider a parent block strong and subject its child to being orphaned.
	ReorgMaxEpochsSinceFinalization primitives.Epoch `yaml:"REORG_MAX_EPOCHS_SINCE_FINALIZATION" spec:"true"` // This defines a limit to consider safe to orphan a block if the network is finalizing
	IntervalsPerSlot                uint64           `yaml:"INTERVALS_PER_SLOT" spec:"true"`                  // IntervalsPerSlot defines the number of fork choice intervals in a slot defined in the fork choice spec.

	// Ethereum PoW parameters.
	DepositChainID         uint64 `yaml:"DEPOSIT_CHAIN_ID" spec:"true"`         // DepositChainID of the eth1 network. This used for replay protection.
	DepositNetworkID       uint64 `yaml:"DEPOSIT_NETWORK_ID" spec:"true"`       // DepositNetworkID of the eth1 network. This used for replay protection.
	DepositContractAddress string `yaml:"DEPOSIT_CONTRACT_ADDRESS" spec:"true"` // DepositContractAddress is the address of the deposit contract.

	// Validator parameters.
	RandomSubnetsPerValidator         uint64 `yaml:"RANDOM_SUBNETS_PER_VALIDATOR" spec:"true"`          // RandomSubnetsPerValidator specifies the amount of subnets a validator has to be subscribed to at one time.
	EpochsPerRandomSubnetSubscription uint64 `yaml:"EPOCHS_PER_RANDOM_SUBNET_SUBSCRIPTION" spec:"true"` // EpochsPerRandomSubnetSubscription specifies the minimum duration a validator is connected to their subnet.

	// State list lengths
	EpochsPerHistoricalVector primitives.Epoch `yaml:"EPOCHS_PER_HISTORICAL_VECTOR" spec:"true"` // EpochsPerHistoricalVector defines max length in epoch to store old historical stats in beacon state.
	EpochsPerSlashingsVector  primitives.Epoch `yaml:"EPOCHS_PER_SLASHINGS_VECTOR" spec:"true"`  // EpochsPerSlashingsVector defines max length in epoch to store old stats to recompute slashing witness.
	HistoricalRootsLimit      uint64           `yaml:"HISTORICAL_ROOTS_LIMIT" spec:"true"`       // HistoricalRootsLimit defines max historical roots that can be saved in state before roll over.
	ValidatorRegistryLimit    uint64           `yaml:"VALIDATOR_REGISTRY_LIMIT" spec:"true"`     // ValidatorRegistryLimit defines the upper bound of validators can participate in eth2.

	// Reward and penalty quotients constants.
	BaseRewardFactor               uint64 `yaml:"BASE_REWARD_FACTOR" spec:"true"`               // BaseRewardFactor is used to calculate validator per-slot interest rate.
	WhistleBlowerRewardQuotient    uint64 `yaml:"WHISTLEBLOWER_REWARD_QUOTIENT" spec:"true"`    // WhistleBlowerRewardQuotient is used to calculate whistle blower reward.
	ProposerRewardQuotient         uint64 `yaml:"PROPOSER_REWARD_QUOTIENT" spec:"true"`         // ProposerRewardQuotient is used to calculate the reward for proposers.
	InactivityPenaltyQuotient      uint64 `yaml:"INACTIVITY_PENALTY_QUOTIENT" spec:"true"`      // InactivityPenaltyQuotient is used to calculate the penalty for a validator that is offline.
	MinSlashingPenaltyQuotient     uint64 `yaml:"MIN_SLASHING_PENALTY_QUOTIENT" spec:"true"`    // MinSlashingPenaltyQuotient is used to calculate the minimum penalty to prevent DoS attacks.
	ProportionalSlashingMultiplier uint64 `yaml:"PROPORTIONAL_SLASHING_MULTIPLIER" spec:"true"` // ProportionalSlashingMultiplier is used as a multiplier on slashed penalties.

	// Max operations per block constants.
	MaxProposerSlashings             uint64 `yaml:"MAX_PROPOSER_SLASHINGS" spec:"true"`               // MaxProposerSlashings defines the maximum number of slashings of proposers possible in a block.
	MaxAttesterSlashings             uint64 `yaml:"MAX_ATTESTER_SLASHINGS" spec:"true"`               // MaxAttesterSlashings defines the maximum number of casper FFG slashings possible in a block.
	MaxAttestations                  uint64 `yaml:"MAX_ATTESTATIONS" spec:"true"`                     // MaxAttestations defines the maximum allowed attestations in a beacon block.
	MaxDeposits                      uint64 `yaml:"MAX_DEPOSITS" spec:"true"`                         // MaxDeposits defines the maximum number of validator deposits in a block.
	MaxVoluntaryExits                uint64 `yaml:"MAX_VOLUNTARY_EXITS" spec:"true"`                  // MaxVoluntaryExits defines the maximum number of validator exits in a block.
	MaxWithdrawalsPerPayload         uint64 `yaml:"MAX_WITHDRAWALS_PER_PAYLOAD" spec:"true"`          // MaxWithdrawalsPerPayload defines the maximum number of withdrawals in a block.
	MaxBlsToExecutionChanges         uint64 `yaml:"MAX_BLS_TO_EXECUTION_CHANGES" spec:"true"`         // MaxBlsToExecutionChanges defines the maximum number of BLS-to-execution-change objects in a block.
	MaxValidatorsPerWithdrawalsSweep uint64 `yaml:"MAX_VALIDATORS_PER_WITHDRAWALS_SWEEP" spec:"true"` // MaxValidatorsPerWithdrawalsSweep bounds the size of the sweep searching for withdrawals per slot.

	// BLS domain values.
	DomainBeaconProposer              [4]byte `yaml:"DOMAIN_BEACON_PROPOSER" spec:"true"`                // DomainBeaconProposer defines the BLS signature domain for beacon proposal verification.
	DomainRandao                      [4]byte `yaml:"DOMAIN_RANDAO" spec:"true"`                         // DomainRandao defines the BLS signature domain for randao verification.
	DomainBeaconAttester              [4]byte `yaml:"DOMAIN_BEACON_ATTESTER" spec:"true"`                // DomainBeaconAttester defines the BLS signature domain for attestation verification.
	DomainDeposit                     [4]byte `yaml:"DOMAIN_DEPOSIT" spec:"true"`                        // DomainDeposit defines the BLS signature domain for deposit verification.
	DomainVoluntaryExit               [4]byte `yaml:"DOMAIN_VOLUNTARY_EXIT" spec:"true"`                 // DomainVoluntaryExit defines the BLS signature domain for exit verification.
	DomainSelectionProof              [4]byte `yaml:"DOMAIN_SELECTION_PROOF" spec:"true"`                // DomainSelectionProof defines the BLS signature domain for selection proof.
	DomainAggregateAndProof           [4]byte `yaml:"DOMAIN_AGGREGATE_AND_PROOF" spec:"true"`            // DomainAggregateAndProof defines the BLS signature domain for aggregate and proof.
	DomainSyncCommittee               [4]byte `yaml:"DOMAIN_SYNC_COMMITTEE" spec:"true"`                 // DomainVoluntaryExit defines the BLS signature domain for sync committee.
	DomainSyncCommitteeSelectionProof [4]byte `yaml:"DOMAIN_SYNC_COMMITTEE_SELECTION_PROOF" spec:"true"` // DomainSelectionProof defines the BLS signature domain for sync committee selection proof.
	DomainContributionAndProof        [4]byte `yaml:"DOMAIN_CONTRIBUTION_AND_PROOF" spec:"true"`         // DomainAggregateAndProof defines the BLS signature domain for contribution and proof.
	DomainApplicationMask             [4]byte `yaml:"DOMAIN_APPLICATION_MASK" spec:"true"`               // DomainApplicationMask defines the BLS signature domain for application mask.
	DomainApplicationBuilder          [4]byte `yaml:"DOMAIN_APPLICATION_BUILDER" spec:"true"`            // DomainApplicationBuilder defines the BLS signature domain for application builder.
	DomainBLSToExecutionChange        [4]byte `yaml:"DOMAIN_BLS_TO_EXECUTION_CHANGE" spec:"true"`        // DomainBLSToExecutionChange defines the BLS signature domain to change withdrawal addresses to ETH1 prefix
	DomainBlobSidecar                 [4]byte `yaml:"DOMAIN_BLOB_SIDECAR" spec:"true"`                   // DomainBlobSidecar defines the BLS signature domain for blob sidecar.

	// Prysm constants.
	GweiPerEth                     uint64          // GweiPerEth is the amount of gwei corresponding to 1 eth.
	BLSSecretKeyLength             int             // BLSSecretKeyLength defines the expected length of BLS secret keys in bytes.
	BLSPubkeyLength                int             // BLSPubkeyLength defines the expected length of BLS public keys in bytes.
	DefaultBufferSize              int             // DefaultBufferSize for channels across the Prysm repository.
	ValidatorPrivkeyFileName       string          // ValidatorPrivKeyFileName specifies the string name of a validator private key file.
	WithdrawalPrivkeyFileName      string          // WithdrawalPrivKeyFileName specifies the string name of a withdrawal private key file.
	RPCSyncCheck                   time.Duration   // Number of seconds to query the sync service, to find out if the node is synced or not.
	EmptySignature                 [96]byte        // EmptySignature is used to represent a zeroed out BLS Signature.
	DefaultPageSize                int             // DefaultPageSize defines the default page size for RPC server request.
	MaxPeersToSync                 int             // MaxPeersToSync describes the limit for number of peers in round robin sync.
	SlotsPerArchivedPoint          primitives.Slot // SlotsPerArchivedPoint defines the number of slots per one archived point.
	GenesisCountdownInterval       time.Duration   // How often to log the countdown until the genesis time is reached.
	BeaconStateFieldCount          int             // BeaconStateFieldCount defines how many fields are in the Phase0 beacon state.
	BeaconStateAltairFieldCount    int             // BeaconStateAltairFieldCount defines how many fields are in the beacon state post upgrade to Altair.
	BeaconStateBellatrixFieldCount int             // BeaconStateBellatrixFieldCount defines how many fields are in beacon state post upgrade to Bellatrix.
	BeaconStateCapellaFieldCount   int             // BeaconStateCapellaFieldCount defines how many fields are in beacon state post upgrade to Capella.
	BeaconStateDenebFieldCount     int             // BeaconStateDenebFieldCount defines how many fields are in beacon state post upgrade to Deneb.

	// Slasher constants.
	WeakSubjectivityPeriod    primitives.Epoch // WeakSubjectivityPeriod defines the time period expressed in number of epochs were proof of stake network should validate block headers and attestations for slashable events.
	PruneSlasherStoragePeriod primitives.Epoch // PruneSlasherStoragePeriod defines the time period expressed in number of epochs were proof of stake network should prune attestation and block header store.

	// Slashing protection constants.
	SlashingProtectionPruningEpochs primitives.Epoch // SlashingProtectionPruningEpochs defines a period after which all prior epochs are pruned in the validator database.

	// Fork-related values.
	GenesisForkVersion   []byte           `yaml:"GENESIS_FORK_VERSION" spec:"true"`   // GenesisForkVersion is used to track fork version between state transitions.
	AltairForkVersion    []byte           `yaml:"ALTAIR_FORK_VERSION" spec:"true"`    // AltairForkVersion is used to represent the fork version for altair.
	AltairForkEpoch      primitives.Epoch `yaml:"ALTAIR_FORK_EPOCH" spec:"true"`      // AltairForkEpoch is used to represent the assigned fork epoch for altair.
	BellatrixForkVersion []byte           `yaml:"BELLATRIX_FORK_VERSION" spec:"true"` // BellatrixForkVersion is used to represent the fork version for bellatrix.
	BellatrixForkEpoch   primitives.Epoch `yaml:"BELLATRIX_FORK_EPOCH" spec:"true"`   // BellatrixForkEpoch is used to represent the assigned fork epoch for bellatrix.
	CapellaForkVersion   []byte           `yaml:"CAPELLA_FORK_VERSION" spec:"true"`   // CapellaForkVersion is used to represent the fork version for capella.
	CapellaForkEpoch     primitives.Epoch `yaml:"CAPELLA_FORK_EPOCH" spec:"true"`     // CapellaForkEpoch is used to represent the assigned fork epoch for capella.
	DenebForkVersion     []byte           `yaml:"DENEB_FORK_VERSION" spec:"true"`     // DenebForkVersion is used to represent the fork version for deneb.
	DenebForkEpoch       primitives.Epoch `yaml:"DENEB_FORK_EPOCH" spec:"true"`       // DenebForkEpoch is used to represent the assigned fork epoch for deneb.

	ForkVersionSchedule map[[fieldparams.VersionLength]byte]primitives.Epoch // Schedule of fork epochs by version.
	ForkVersionNames    map[[fieldparams.VersionLength]byte]string           // Human-readable names of fork versions.

	// Weak subjectivity values.
	SafetyDecay uint64 // SafetyDecay is defined as the loss in the 1/3 consensus safety margin of the casper FFG mechanism.

	// New values introduced in Altair hard fork 1.
	// Participation flag indices.
	TimelySourceFlagIndex uint8 `yaml:"TIMELY_SOURCE_FLAG_INDEX" spec:"true"` // TimelySourceFlagIndex is the source flag position of the participation bits.
	TimelyTargetFlagIndex uint8 `yaml:"TIMELY_TARGET_FLAG_INDEX" spec:"true"` // TimelyTargetFlagIndex is the target flag position of the participation bits.
	TimelyHeadFlagIndex   uint8 `yaml:"TIMELY_HEAD_FLAG_INDEX" spec:"true"`   // TimelyHeadFlagIndex is the head flag position of the participation bits.

	// Incentivization weights.
	TimelySourceWeight uint64 `yaml:"TIMELY_SOURCE_WEIGHT" spec:"true"` // TimelySourceWeight is the factor of how much source rewards receives.
	TimelyTargetWeight uint64 `yaml:"TIMELY_TARGET_WEIGHT" spec:"true"` // TimelyTargetWeight is the factor of how much target rewards receives.
	TimelyHeadWeight   uint64 `yaml:"TIMELY_HEAD_WEIGHT" spec:"true"`   // TimelyHeadWeight is the factor of how much head rewards receives.
	SyncRewardWeight   uint64 `yaml:"SYNC_REWARD_WEIGHT" spec:"true"`   // SyncRewardWeight is the factor of how much sync committee rewards receives.
	WeightDenominator  uint64 `yaml:"WEIGHT_DENOMINATOR" spec:"true"`   // WeightDenominator accounts for total rewards denomination.
	ProposerWeight     uint64 `yaml:"PROPOSER_WEIGHT" spec:"true"`      // ProposerWeight is the factor of how much proposer rewards receives.

	// Validator related.
	TargetAggregatorsPerSyncSubcommittee uint64 `yaml:"TARGET_AGGREGATORS_PER_SYNC_SUBCOMMITTEE" spec:"true"` // TargetAggregatorsPerSyncSubcommittee for aggregating in sync committee.
	SyncCommitteeSubnetCount             uint64 `yaml:"SYNC_COMMITTEE_SUBNET_COUNT" spec:"true"`              // SyncCommitteeSubnetCount for sync committee subnet count.

	// Misc.
	SyncCommitteeSize            uint64           `yaml:"SYNC_COMMITTEE_SIZE" spec:"true"`              // SyncCommitteeSize for light client sync committee size.
	InactivityScoreBias          uint64           `yaml:"INACTIVITY_SCORE_BIAS" spec:"true"`            // InactivityScoreBias for calculating score bias penalties during inactivity
	InactivityScoreRecoveryRate  uint64           `yaml:"INACTIVITY_SCORE_RECOVERY_RATE" spec:"true"`   // InactivityScoreRecoveryRate for recovering score bias penalties during inactivity.
	EpochsPerSyncCommitteePeriod primitives.Epoch `yaml:"EPOCHS_PER_SYNC_COMMITTEE_PERIOD" spec:"true"` // EpochsPerSyncCommitteePeriod defines how many epochs per sync committee period.

	// Updated penalty values. This moves penalty parameters toward their final, maximum security values.
	// Note: We do not override previous configuration values but instead creates new values and replaces usage throughout.
	InactivityPenaltyQuotientAltair         uint64 `yaml:"INACTIVITY_PENALTY_QUOTIENT_ALTAIR" spec:"true"`         // InactivityPenaltyQuotientAltair for penalties during inactivity post Altair hard fork.
	MinSlashingPenaltyQuotientAltair        uint64 `yaml:"MIN_SLASHING_PENALTY_QUOTIENT_ALTAIR" spec:"true"`       // MinSlashingPenaltyQuotientAltair for slashing penalties post Altair hard fork.
	ProportionalSlashingMultiplierAltair    uint64 `yaml:"PROPORTIONAL_SLASHING_MULTIPLIER_ALTAIR" spec:"true"`    // ProportionalSlashingMultiplierAltair for slashing penalties' multiplier post Alair hard fork.
	MinSlashingPenaltyQuotientBellatrix     uint64 `yaml:"MIN_SLASHING_PENALTY_QUOTIENT_BELLATRIX" spec:"true"`    // MinSlashingPenaltyQuotientBellatrix for slashing penalties post Bellatrix hard fork.
	ProportionalSlashingMultiplierBellatrix uint64 `yaml:"PROPORTIONAL_SLASHING_MULTIPLIER_BELLATRIX" spec:"true"` // ProportionalSlashingMultiplierBellatrix for slashing penalties' multiplier post Bellatrix hard fork.
	InactivityPenaltyQuotientBellatrix      uint64 `yaml:"INACTIVITY_PENALTY_QUOTIENT_BELLATRIX" spec:"true"`      // InactivityPenaltyQuotientBellatrix for penalties during inactivity post Bellatrix hard fork.

	// Light client
	MinSyncCommitteeParticipants uint64 `yaml:"MIN_SYNC_COMMITTEE_PARTICIPANTS" spec:"true"`  // MinSyncCommitteeParticipants defines the minimum amount of sync committee participants for which the light client acknowledges the signature.
	MaxRequestLightClientUpdates uint64 `yaml:"MAX_REQUEST_LIGHT_CLIENT_UPDATES" spec:"true"` // MaxRequestLightClientUpdates defines the maximum amount of light client updates that can be requested in a single request.

	// Bellatrix
	TerminalBlockHash                common.Hash      `yaml:"TERMINAL_BLOCK_HASH" spec:"true"`                  // TerminalBlockHash of beacon chain.
	TerminalBlockHashActivationEpoch primitives.Epoch `yaml:"TERMINAL_BLOCK_HASH_ACTIVATION_EPOCH" spec:"true"` // TerminalBlockHashActivationEpoch of beacon chain.
	TerminalTotalDifficulty          string           `yaml:"TERMINAL_TOTAL_DIFFICULTY" spec:"true"`            // TerminalTotalDifficulty is part of the experimental Bellatrix spec. This value is type is currently TBD.
	DefaultFeeRecipient              common.Address   // DefaultFeeRecipient where the transaction fee goes to.
	EthBurnAddressHex                string           // EthBurnAddressHex is the constant eth address written in hex format to burn fees in that network. the default is 0x0
	DefaultBuilderGasLimit           uint64           // DefaultBuilderGasLimit is the default used to set the gaslimit for the Builder APIs, typically at around 30M wei.

	// Mev-boost circuit breaker
	MaxBuilderConsecutiveMissedSlots primitives.Slot // MaxBuilderConsecutiveMissedSlots defines the number of consecutive skip slot to fallback from using relay/builder to local execution engine for block construction.
	MaxBuilderEpochMissedSlots       primitives.Slot // MaxBuilderEpochMissedSlots is defining the number of total skip slot (per epoch rolling windows) to fallback from using relay/builder to local execution engine for block construction.
	LocalBlockValueBoost             uint64          // LocalBlockValueBoost is the value boost for local block construction. This is used to prioritize local block construction over relay/builder block construction.

	// Execution engine timeout value
	ExecutionEngineTimeoutValue uint64 // ExecutionEngineTimeoutValue defines the seconds to wait before timing out engine endpoints with execution payload execution semantics (newPayload, forkchoiceUpdated).

	// Subnet value
	BlobsidecarSubnetCount uint64 `yaml:"BLOB_SIDECAR_SUBNET_COUNT"` // BlobsidecarSubnetCount is the number of blobsidecar subnets used in the gossipsub protocol.

	// Values introduced in Deneb hard fork
	MaxPerEpochActivationChurnLimit  uint64           `yaml:"MAX_PER_EPOCH_ACTIVATION_CHURN_LIMIT" spec:"true"`  // MaxPerEpochActivationChurnLimit is the maximum amount of churn allotted for validator activation.
	MinEpochsForBlobsSidecarsRequest primitives.Epoch `yaml:"MIN_EPOCHS_FOR_BLOB_SIDECARS_REQUESTS" spec:"true"` // MinEpochsForBlobsSidecarsRequest is the minimum number of epochs the node will keep the blobs for.
	MaxRequestBlobSidecars           uint64           `yaml:"MAX_REQUEST_BLOB_SIDECARS" spec:"true"`             // MaxRequestBlobSidecars is the maximum number of blobs to request in a single request.
	MaxRequestBlocksDeneb            uint64           `yaml:"MAX_REQUEST_BLOCKS_DENEB" spec:"true"`              // MaxRequestBlocksDeneb is the maximum number of blocks in a single request after the deneb epoch.

	// Networking Specific Parameters
	GossipMaxSize                   uint64          `yaml:"GOSSIP_MAX_SIZE" spec:"true"`                    // GossipMaxSize is the maximum allowed size of uncompressed gossip messages.
	MaxChunkSize                    uint64          `yaml:"MAX_CHUNK_SIZE" spec:"true"`                     // MaxChunkSize is the maximum allowed size of uncompressed req/resp chunked responses.
	AttestationSubnetCount          uint64          `yaml:"ATTESTATION_SUBNET_COUNT" spec:"true"`           // AttestationSubnetCount is the number of attestation subnets used in the gossipsub protocol.
	AttestationPropagationSlotRange primitives.Slot `yaml:"ATTESTATION_PROPAGATION_SLOT_RANGE" spec:"true"` // AttestationPropagationSlotRange is the maximum number of slots during which an attestation can be propagated.
	MaxRequestBlocks                uint64          `yaml:"MAX_REQUEST_BLOCKS" spec:"true"`                 // MaxRequestBlocks is the maximum number of blocks in a single request.
	TtfbTimeout                     uint64          `yaml:"TTFB_TIMEOUT" spec:"true"`                       // TtfbTimeout is the maximum time to wait for first byte of request response (time-to-first-byte).
	RespTimeout                     uint64          `yaml:"RESP_TIMEOUT" spec:"true"`                       // RespTimeout is the maximum time for complete response transfer.
	MaximumGossipClockDisparity     uint64          `yaml:"MAXIMUM_GOSSIP_CLOCK_DISPARITY" spec:"true"`     // MaximumGossipClockDisparity is the maximum milliseconds of clock disparity assumed between honest nodes.
	MessageDomainInvalidSnappy      [4]byte         `yaml:"MESSAGE_DOMAIN_INVALID_SNAPPY" spec:"true"`      // MessageDomainInvalidSnappy is the 4-byte domain for gossip message-id isolation of invalid snappy messages.
	MessageDomainValidSnappy        [4]byte         `yaml:"MESSAGE_DOMAIN_VALID_SNAPPY" spec:"true"`        // MessageDomainValidSnappy is the 4-byte domain for gossip message-id isolation of valid snappy messages.
	MinEpochsForBlockRequests       uint64          `yaml:"MIN_EPOCHS_FOR_BLOCK_REQUESTS" spec:"true"`      // MinEpochsForBlockRequests represents the minimum number of epochs for which we can serve block requests.
	EpochsPerSubnetSubscription     uint64          `yaml:"EPOCHS_PER_SUBNET_SUBSCRIPTION" spec:"true"`     // EpochsPerSubnetSubscription specifies the minimum duration a validator is connected to their subnet.
	AttestationSubnetExtraBits      uint64          `yaml:"ATTESTATION_SUBNET_EXTRA_BITS" spec:"true"`      // AttestationSubnetExtraBits is the number of extra bits of a NodeId to use when mapping to a subscribed subnet.
	AttestationSubnetPrefixBits     uint64          `yaml:"ATTESTATION_SUBNET_PREFIX_BITS" spec:"true"`     // AttestationSubnetPrefixBits is defined as (ceillog2(ATTESTATION_SUBNET_COUNT) + ATTESTATION_SUBNET_EXTRA_BITS).
	SubnetsPerNode                  uint64          `yaml:"SUBNETS_PER_NODE" spec:"true"`                   // SubnetsPerNode is the number of long-lived subnets a beacon node should be subscribed to.
	NodeIdBits                      uint64          `yaml:"NODE_ID_BITS" spec:"true"`                       // NodeIdBits defines the bit length of a node id.
}

BeaconChainConfig contains constant configs for node to participate in beacon chain.

func All 

func All() []*BeaconChainConfig

All returns a slice of every BeaconChainConfig contained in the configset.

func BeaconConfig 

func BeaconConfig() *BeaconChainConfig

BeaconConfig retrieves beacon chain config.

func ByName 

func ByName(name string) (*BeaconChainConfig, error)

ByName returns the BeaconChainConfig with the matching `ConfigName` field. The runtime ensures that each config name uniquely refers to a single BeaconChainConfig.

func ByVersion 

func ByVersion(version [fieldparams.VersionLength]byte) (*BeaconChainConfig, error)

ByVersion returns the BeaconChainConfig that has the given version in its ForkVersionSchedule. The configset ensures that each fork version schedule entry uniquely points to a single BeaconChainConfig.

func E2EMainnetTestConfig 

func E2EMainnetTestConfig() *BeaconChainConfig

func E2ETestConfig 

func E2ETestConfig() *BeaconChainConfig

E2ETestConfig retrieves the configurations made specifically for E2E testing.

WARNING: This config is only for testing, it is not meant for use outside of E2E.

func HoleskyConfig 

func HoleskyConfig() *BeaconChainConfig

HoleskyConfig defines the config for the Holesky beacon chain testnet.

func InteropConfig 

func InteropConfig() *BeaconChainConfig

InteropConfig provides a generic config suitable for interop testing.

func MainnetConfig 

func MainnetConfig() *BeaconChainConfig

MainnetConfig returns the configuration to be used in the main network.

func MainnetTestConfig 

func MainnetTestConfig() *BeaconChainConfig

MainnetTestConfig provides a version of the mainnet config that has a different name and a different fork choice schedule. This can be used in cases where we want to use config values that are consistent with mainnet, but won't conflict or cause the hard-coded genesis to be loaded.

func MinimalSpecConfig 

func MinimalSpecConfig() *BeaconChainConfig

MinimalSpecConfig retrieves the minimal config used in spec tests.

func PraterConfig 

func PraterConfig() *BeaconChainConfig

PraterConfig defines the config for the Prater testnet.

func SepoliaConfig 

func SepoliaConfig() *BeaconChainConfig

SepoliaConfig defines the config for the Sepolia beacon chain testnet.

func UnmarshalConfig 

func UnmarshalConfig(yamlFile []byte, conf *BeaconChainConfig) (*BeaconChainConfig, error)

func UnmarshalConfigFile 

func UnmarshalConfigFile(path string, conf *BeaconChainConfig) (*BeaconChainConfig, error)

func (*BeaconChainConfig) Copy 

func (b *BeaconChainConfig) Copy() *BeaconChainConfig

Copy returns a copy of the config object.

func (*BeaconChainConfig) CurrentEpochAttestationsLength 

func (b *BeaconChainConfig) CurrentEpochAttestationsLength() uint64

CurrentEpochAttestationsLength returns the maximum length of the pending attestation list for the current epoch, computed from the parameters in BeaconChainConfig.

func (*BeaconChainConfig) Eth1DataVotesLength 

func (b *BeaconChainConfig) Eth1DataVotesLength() uint64

Eth1DataVotesLength returns the maximum length of the votes on the Eth1 data, computed from the parameters in BeaconChainConfig.

func (*BeaconChainConfig) InitializeForkSchedule 

func (b *BeaconChainConfig) InitializeForkSchedule()

InitializeForkSchedule initializes the schedules forks baked into the config.

func (*BeaconChainConfig) MaximumGossipClockDisparityDuration 

func (b *BeaconChainConfig) MaximumGossipClockDisparityDuration() time.Duration

MaximumGossipClockDisparityDuration returns the time duration of the clock disparity.

func (*BeaconChainConfig) PreviousEpochAttestationsLength 

func (b *BeaconChainConfig) PreviousEpochAttestationsLength() uint64

PreviousEpochAttestationsLength returns the maximum length of the pending attestation list for the previous epoch, computed from the parameters in BeaconChainConfig.

func (*BeaconChainConfig) RespTimeoutDuration 

func (b *BeaconChainConfig) RespTimeoutDuration() time.Duration

RespTimeoutDuration returns the time duration of the timeout.

func (*BeaconChainConfig) TtfbTimeoutDuration 

func (b *BeaconChainConfig) TtfbTimeoutDuration() time.Duration

TtfbTimeoutDuration returns the time duration of the timeout.

type IoConfig 

type IoConfig struct {
	ReadWritePermissions        os.FileMode
	ReadWriteExecutePermissions os.FileMode
	BoltTimeout                 time.Duration
}

IoConfig defines the shared io parameters.

func BeaconIoConfig 

func BeaconIoConfig() *IoConfig

BeaconIoConfig returns the current io config for the beacon chain.

type NetworkConfig 

type NetworkConfig struct {
	// DiscoveryV5 Config
	ETH2Key                    string // ETH2Key is the ENR key of the Ethereum consensus object in an enr.
	AttSubnetKey               string // AttSubnetKey is the ENR key of the subnet bitfield in the enr.
	SyncCommsSubnetKey         string // SyncCommsSubnetKey is the ENR key of the sync committee subnet bitfield in the enr.
	MinimumPeersInSubnetSearch uint64 // PeersInSubnetSearch is the required amount of peers that we need to be able to lookup in a subnet search.

	// Chain Network Config
	ContractDeploymentBlock uint64   // ContractDeploymentBlock is the eth1 block in which the deposit contract is deployed.
	BootstrapNodes          []string // BootstrapNodes are the addresses of the bootnodes.
}

NetworkConfig defines the spec based network parameters.

func BeaconNetworkConfig 

func BeaconNetworkConfig() *NetworkConfig

BeaconNetworkConfig returns the current network config for the beacon chain.

func (*NetworkConfig) Copy 

func (c *NetworkConfig) Copy() *NetworkConfig

Copy returns Copy of the config object.

Source Files

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