ethconfig

Documentation

Overview

Package ethconfig contains the configuration of the ETH and LES protocols.

Index

• Variables
• func CreateConsensusEngine(config *params.ChainConfig, db ethdb.Database) (consensus.Engine, error)
• type Config
  • func (c Config) MarshalTOML() (interface{}, error)
  • func (c *Config) UnmarshalTOML(unmarshal func(interface{}) error) error

Variables

var Defaults = Config{
	SyncMode:           downloader.SnapSync,
	NetworkId:          0,
	TxLookupLimit:      2350000,
	TransactionHistory: 2350000,
	StateHistory:       params.FullImmutabilityThreshold,
	LightPeers:         100,
	DatabaseCache:      512,
	TrieCleanCache:     154,
	TrieDirtyCache:     256,
	TrieTimeout:        60 * time.Minute,
	SnapshotCache:      102,
	FilterLogCacheSize: 32,
	Miner:              miner.DefaultConfig,
	TxPool:             legacypool.DefaultConfig,
	BlobPool:           blobpool.DefaultConfig,
	RPCGasCap:          50000000,
	RPCEVMTimeout:      5 * time.Second,
	GPO:                FullNodeGPO,
	RPCTxFeeCap:        1,
}

Defaults contains default settings for use on the Ethereum main net.

var FullNodeGPO = gasprice.Config{
	Blocks:           20,
	Percentile:       60,
	MaxHeaderHistory: 1024,
	MaxBlockHistory:  1024,
	MaxPrice:         gasprice.DefaultMaxPrice,
	IgnorePrice:      gasprice.DefaultIgnorePrice,
}

FullNodeGPO contains default gasprice oracle settings for full node.

Functions

func CreateConsensusEngine

func CreateConsensusEngine(config *params.ChainConfig, db ethdb.Database) (consensus.Engine, error)

CreateConsensusEngine creates a consensus engine for the given chain config. Clique is allowed for now to live standalone, but ethash is forbidden and can only exist on already merged networks.

Types

type Config

type Config struct {
	// The genesis block, which is inserted if the database is empty.
	// If nil, the Ethereum main net block is used.
	Genesis *core.Genesis `toml:",omitempty"`

	// Network ID separates blockchains on the peer-to-peer networking level. When left
	// zero, the chain ID is used as network ID.
	NetworkId uint64
	SyncMode  downloader.SyncMode

	// This can be set to list of enrtree:// URLs which will be queried for
	// nodes to connect to.
	EthDiscoveryURLs  []string
	SnapDiscoveryURLs []string

	NoPruning  bool // Whether to disable pruning and flush everything to disk
	NoPrefetch bool // Whether to disable prefetching and only load state on demand

	// Deprecated, use 'TransactionHistory' instead.
	TxLookupLimit      uint64 `toml:",omitempty"` // The maximum number of blocks from head whose tx indices are reserved.
	TransactionHistory uint64 `toml:",omitempty"` // The maximum number of blocks from head whose tx indices are reserved.
	StateHistory       uint64 `toml:",omitempty"` // The maximum number of blocks from head whose state histories are reserved.

	// State scheme represents the scheme used to store ethereum states and trie
	// nodes on top. It can be 'hash', 'path', or none which means use the scheme
	// consistent with persistent state.
	StateScheme string `toml:",omitempty"`

	// RequiredBlocks is a set of block number -> hash mappings which must be in the
	// canonical chain of all remote peers. Setting the option makes geth verify the
	// presence of these blocks for every new peer connection.
	RequiredBlocks map[uint64]common.Hash `toml:"-"`

	// Light client options
	LightServ        int  `toml:",omitempty"` // Maximum percentage of time allowed for serving LES requests
	LightIngress     int  `toml:",omitempty"` // Incoming bandwidth limit for light servers
	LightEgress      int  `toml:",omitempty"` // Outgoing bandwidth limit for light servers
	LightPeers       int  `toml:",omitempty"` // Maximum number of LES client peers
	LightNoPrune     bool `toml:",omitempty"` // Whether to disable light chain pruning
	LightNoSyncServe bool `toml:",omitempty"` // Whether to serve light clients before syncing

	// Database options
	SkipBcVersionCheck bool `toml:"-"`
	DatabaseHandles    int  `toml:"-"`
	DatabaseCache      int
	DatabaseFreezer    string

	TrieCleanCache int
	TrieDirtyCache int
	TrieTimeout    time.Duration
	SnapshotCache  int
	Preimages      bool

	// This is the number of blocks for which logs will be cached in the filter system.
	FilterLogCacheSize int

	// Mining options
	Miner miner.Config

	// Transaction pool options
	TxPool   legacypool.Config
	BlobPool blobpool.Config

	// Gas Price Oracle options
	GPO gasprice.Config

	// Enables tracking of SHA3 preimages in the VM
	EnablePreimageRecording bool

	// Enables prefetching trie nodes for read operations too
	EnableWitnessCollection bool `toml:"-"`

	// Enables VM tracing
	VMTrace           string
	VMTraceJsonConfig string

	// Miscellaneous options
	DocRoot string `toml:"-"`

	// RPCGasCap is the global gas cap for eth-call variants.
	RPCGasCap uint64

	// RPCEVMTimeout is the global timeout for eth-call.
	RPCEVMTimeout time.Duration

	// RPCTxFeeCap is the global transaction fee(price * gaslimit) cap for
	// send-transaction variants. The unit is ether.
	RPCTxFeeCap float64

	// OverrideCancun (TODO: remove after the fork)
	OverrideCancun *uint64 `toml:",omitempty"`

	// OverrideVerkle (TODO: remove after the fork)
	OverrideVerkle *uint64 `toml:",omitempty"`
}

Config contains configuration options for ETH and LES protocols.

func (Config) MarshalTOML

func (c Config) MarshalTOML() (interface{}, error)

MarshalTOML marshals as TOML.

func (*Config) UnmarshalTOML

func (c *Config) UnmarshalTOML(unmarshal func(interface{}) error) error

UnmarshalTOML unmarshals from TOML.