ethereum

package
v0.0.21 Latest Latest
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 Go to latest Published: Jul 26, 2023 License: MIT Imports: 50 Imported by: 0

Documentation

Index

Constants

View Source 
const (
	BlockCacheSize = 6000
	MaxContractGas = 80000
)
View Source 
const (
	PrefixBlockMeta    = `eth-blockmeta-`
	PrefixSignedTxItem = `signed-txitem-`
)

PrefixTxStorage declares prefix to use in leveldb to avoid conflicts

View Source 
const TxWaitBlocks = 150

Variables

This section is empty.

Functions

func IsETH 

func IsETH(token string) bool

IsETH return true if the token address equals to ethToken address

func LatestAggregatorContracts 

func LatestAggregatorContracts() []common.Address

Types

type BlockMetaAccessor 

type BlockMetaAccessor interface {
	GetBlockMetas() ([]*types.BlockMeta, error)
	GetBlockMeta(height int64) (*types.BlockMeta, error)
	SaveBlockMeta(height int64, block *types.BlockMeta) error
	PruneBlockMeta(height int64) error
	AddSignedTxItem(item SignedTxItem) error
	RemoveSignedTxItem(hash string) error
	GetSignedTxItems() ([]SignedTxItem, error)
}

BlockMetaAccessor define methods need to access block meta storage

type Client 

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

Client is a structure to sign and broadcast tx to Ethereum chain used by signer mostly

func NewClient 

func NewClient(thorKeys *digitalclient.Keys,
	cfg config.BifrostChainConfiguration,
	server *tssp.TssServer,
	bridge digitalclient.DigitaldollarBridge,
	m *metrics.Metrics,
	pubkeyMgr pubkeymanager.PubKeyValidator,
	poolMgr digitalclient.PoolManager,
) (*Client, error)

NewClient create new instance of Ethereum client

func (*Client) AddSignedTxItem 

func (c *Client) AddSignedTxItem(hash string, height int64, vaultPubKey string) error

AddSignedTxItem add the transaction to key value store

func (*Client) BroadcastTx 

func (c *Client) BroadcastTx(txOutItem stypes.TxOutItem, hexTx []byte) (string, error)

BroadcastTx decodes tx using rlp and broadcasts too Ethereum chain

func (*Client) ConfirmationCountReady 

func (c *Client) ConfirmationCountReady(txIn stypes.TxIn) bool

ConfirmationCountReady check whether the given txIn is ready to be send to DIGITALDollar

func (*Client) GetAccount 

func (c *Client) GetAccount(pk common.PubKey, height *big.Int) (common.Account, error)

GetAccount gets account by address in eth client

func (*Client) GetAccountByAddress 

func (c *Client) GetAccountByAddress(address string, height *big.Int) (common.Account, error)

GetAccountByAddress return account information

func (*Client) GetAddress 

func (c *Client) GetAddress(poolPubKey common.PubKey) string

GetAddress return current signer address, it will be bech32 encoded address

func (*Client) GetBalance 

func (c *Client) GetBalance(addr, token string, height *big.Int) (*big.Int, error)

GetBalance call smart contract to find out the balance of the given address and token

func (*Client) GetBalances 

func (c *Client) GetBalances(addr string, height *big.Int) (common.Coins, error)

GetBalances gets all the balances of the given address

func (*Client) GetChain 

func (c *Client) GetChain() common.Chain

GetChain get chain

func (*Client) GetConfig 

func (c *Client) GetConfig() config.BifrostChainConfiguration

GetConfig return the configurations used by ETH chain

func (*Client) GetConfirmationCount 

func (c *Client) GetConfirmationCount(txIn stypes.TxIn) int64

GetConfirmationCount decide the given txIn how many confirmation it requires

func (*Client) GetGasFee 

func (c *Client) GetGasFee(gas uint64) common.Gas

GetGasFee gets gas fee

func (*Client) GetGasPrice 

func (c *Client) GetGasPrice() *big.Int

GetGasPrice gets gas price from eth scanner

func (*Client) GetHeight 

func (c *Client) GetHeight() (int64, error)

GetHeight gets height from eth scanner

func (*Client) GetNonce 

func (c *Client) GetNonce(addr string) (uint64, error)

GetNonce gets nonce

func (*Client) IsBlockScannerHealthy 

func (c *Client) IsBlockScannerHealthy() bool

func (*Client) OnObservedTxIn 

func (c *Client) OnObservedTxIn(txIn stypes.TxInItem, blockHeight int64)

OnObservedTxIn gets called from observer when we have a valid observation

func (*Client) ReportSolvency 

func (c *Client) ReportSolvency(ethBlockHeight int64) error

func (*Client) ShouldReportSolvency 

func (c *Client) ShouldReportSolvency(height int64) bool

ShouldReportSolvency with given block height , should chain client report Solvency to DDNode?

func (*Client) SignTx 

func (c *Client) SignTx(tx stypes.TxOutItem, height int64) ([]byte, []byte, *stypes.TxInItem, error)

SignTx sign the the given TxArrayItem

func (*Client) Start 

func (c *Client) Start(globalTxsQueue chan stypes.TxIn, globalErrataQueue chan stypes.ErrataBlock, globalSolvencyQueue chan stypes.Solvency)

Start to monitor Ethereum block chain

func (*Client) Stop 

func (c *Client) Stop()

Stop ETH client

type DIGITALDollarRouterTransferOutAndCall added in v0.0.19 

type DIGITALDollarRouterTransferOutAndCall struct {
	Vault        ecommon.Address
	Target       ecommon.Address
	Amount       *big.Int
	FinalAsset   ecommon.Address
	To           ecommon.Address
	AmountOutMin *big.Int
	Memo         string
}

DIGITALDollarRouterTransferOutAndCall represents a TransferOutAndCall event raised by the DIGITALDollarRouter contract.

type ETHScanner 

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

ETHScanner is a scanner that understand how to interact with ETH chain ,and scan block , parse smart contract etc

func NewETHScanner 

func NewETHScanner(cfg config.BifrostBlockScannerConfiguration,
	storage blockscanner.ScannerStorage,
	chainID *big.Int,
	client *ethclient.Client,
	bridge digitalclient.DigitaldollarBridge,
	m *metrics.Metrics,
	pubkeyMgr pubkeymanager.PubKeyValidator,
	solvencyReporter SolvencyReporter,
	signerCacheManager *signercache.CacheManager,
) (*ETHScanner, error)

NewETHScanner create a new instance of ETHScanner

func (*ETHScanner) FetchMemPool 

func (e *ETHScanner) FetchMemPool(_ int64) (stypes.TxIn, error)

FetchMemPool get tx from mempool

func (*ETHScanner) FetchTxs 

func (e *ETHScanner) FetchTxs(height, chainHeight int64) (stypes.TxIn, error)

FetchTxs query the ETH chain to get txs in the given block height

func (*ETHScanner) GetGasPrice 

func (e *ETHScanner) GetGasPrice() *big.Int

GetGasPrice returns current gas price

func (*ETHScanner) GetHeight 

func (e *ETHScanner) GetHeight() (int64, error)

GetHeight return latest block height

func (*ETHScanner) GetTokens 

func (e *ETHScanner) GetTokens() ([]*types.TokenMeta, error)

GetTokens return all the token meta data

type LevelDBBlockMetaAccessor 

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

LevelDBBlockMetaAccessor struct

func NewLevelDBBlockMetaAccessor 

func NewLevelDBBlockMetaAccessor(db *leveldb.DB) (*LevelDBBlockMetaAccessor, error)

NewLevelDBBlockMetaAccessor creates a new level db backed BlockMeta accessor

func (*LevelDBBlockMetaAccessor) AddSignedTxItem 

func (t *LevelDBBlockMetaAccessor) AddSignedTxItem(item SignedTxItem) error

AddSignedTxItem add a signed tx item to key value store

func (*LevelDBBlockMetaAccessor) GetBlockMeta 

func (t *LevelDBBlockMetaAccessor) GetBlockMeta(height int64) (*types.BlockMeta, error)

GetBlockMeta at given block height , when the requested block meta doesn't exist , it will return nil , thus caller need to double check it

func (*LevelDBBlockMetaAccessor) GetBlockMetas 

func (t *LevelDBBlockMetaAccessor) GetBlockMetas() ([]*types.BlockMeta, error)

GetBlockMetas returns all the block metas in storage The chain client will Prune block metas every time it finished scan a block , so at maximum it will keep BlockCacheSize blocks thus it should not grow out of control

func (*LevelDBBlockMetaAccessor) GetSignedTxItems 

func (t *LevelDBBlockMetaAccessor) GetSignedTxItems() ([]SignedTxItem, error)

GetSignedTxItems get all the signed tx items that in the key value store

func (*LevelDBBlockMetaAccessor) PruneBlockMeta 

func (t *LevelDBBlockMetaAccessor) PruneBlockMeta(height int64) error

PruneBlockMeta remove all block meta that is older than the given block height with exception, if there are unspent transaction output in it , then the block meta will not be removed

func (*LevelDBBlockMetaAccessor) RemoveSignedTxItem 

func (t *LevelDBBlockMetaAccessor) RemoveSignedTxItem(hash string) error

RemoveSignedTxItem remove a signed item from key value store

func (*LevelDBBlockMetaAccessor) SaveBlockMeta 

func (t *LevelDBBlockMetaAccessor) SaveBlockMeta(height int64, blockMeta *types.BlockMeta) error

SaveBlockMeta persistent the given BlockMeta into storage

type LevelDBTokenMeta 

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

LevelDBTokenMeta struct

func NewLevelDBTokenMeta 

func NewLevelDBTokenMeta(db *leveldb.DB) (*LevelDBTokenMeta, error)

NewLevelDBTokenMeta creates a new level db backed TokenMeta

func (*LevelDBTokenMeta) GetTokenMeta 

func (t *LevelDBTokenMeta) GetTokenMeta(address string) (types.TokenMeta, error)

GetTokenMeta for given token address

func (*LevelDBTokenMeta) GetTokens 

func (t *LevelDBTokenMeta) GetTokens() ([]*types.TokenMeta, error)

GetTokens returns all the token metas in storage

func (*LevelDBTokenMeta) SaveTokenMeta 

func (t *LevelDBTokenMeta) SaveTokenMeta(symbol, address string, decimals uint64) error

SaveTokenMeta persistent the given TokenMeta into storage

type RouterCoin 

type RouterCoin struct {
	Asset  ecommon.Address
	Amount *big.Int
}

RouterCoin represent the coins transfer between vault

type SignedTxItem 

type SignedTxItem struct {
	Hash        string `json:"hash,omitempty"`
	Height      int64  `json:"height,omitempty"`
	VaultPubKey string `json:"vault_pub_key,omitempty"`
}

func (SignedTxItem) String 

func (st SignedTxItem) String() string

String implement fmt.Stringer

type SmartContractLogParser 

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

func NewSmartContractLogParser 

func NewSmartContractLogParser(validator contractAddressValidator,
	resolver assetResolver,
	decimalResolver tokenDecimalResolver,
	amtConverter amountConverter,
	vaultABI *abi.ABI,
) SmartContractLogParser

func (*SmartContractLogParser) ParseTransferOutAndCall 

func (scp *SmartContractLogParser) ParseTransferOutAndCall(log etypes.Log) (*DIGITALDollarRouterTransferOutAndCall, error)

ParseTransferOutAndCall is a log parse operation binding the contract event 0xbda904e26adea40cc083dc36e80fde1641dfdd8b9a035c44022a43e713f73d36.

type SolvencyReporter 

type SolvencyReporter func(int64) error

SolvencyReporter is to report solvency info to DDNode

Source Files

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