bitcoin

package
v0.15.0 Latest Latest
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 Go to latest Published: Sep 22, 2020 License: MIT Imports: 38 Imported by: 0

Documentation

Index

Constants

View Source 
const (
	TransactionFeeKey = "transactionfee-"
	PrefixBlocMeta    = `blockmeta-`
)

PrefixUTXOStorage declares prefix to use in leveldb to avoid conflicts

View Source 
const (
	// SatsPervBytes it should be enough , this one will only be used if signer can't find any previous UTXO , and fee info from local storage.
	SatsPervBytes = 25
	// MinUTXOConfirmation UTXO that has less confirmation then this will not be spent , unless it is yggdrasil
	MinUTXOConfirmation = 10
)
View Source 
const BlockCacheSize = 100

BlockCacheSize the number of block meta that get store in storage.

Variables

This section is empty.

Functions

func GetBech32AccountPubKey 

func GetBech32AccountPubKey(key *btcec.PrivateKey) (common.PubKey, error)

GetBech32AccountPubKey convert the given private key to

Types

type BlockMeta 

type BlockMeta struct {
	PreviousHash              string                     `json:"previous_hash"`
	Height                    int64                      `json:"height"`
	BlockHash                 string                     `json:"block_hash"`
	UnspentTransactionOutputs []UnspentTransactionOutput `json:"utxos"`
}

BlockMeta is a structure to store the blocks bifrost scanned

func NewBlockMeta 

func NewBlockMeta(previousHash string, height int64, blockHash string) *BlockMeta

NewBlockMeta create a new instance of BlockMeta

func (*BlockMeta) AddUTXO 

func (b *BlockMeta) AddUTXO(utxo UnspentTransactionOutput)

AddUTXO add the given utxo to blockmeta

func (*BlockMeta) GetUTXOs 

func (b *BlockMeta) GetUTXOs(pubKey common.PubKey) []UnspentTransactionOutput

GetUTXOs that match the given pubkey and are unspent

func (*BlockMeta) RemoveUTXO 

func (b *BlockMeta) RemoveUTXO(key string)

RemoveUTXO - remove a given UTXO from the storage ,because we already spent it

func (*BlockMeta) SpendUTXO 

func (b *BlockMeta) SpendUTXO(key string)

SpendUTXO mark a utxo as spent

func (*BlockMeta) UnspendUTXO 

func (b *BlockMeta) UnspendUTXO(key string)

UnspendUTXO mark utxo as unspent

type BlockMetaAccessor 

type BlockMetaAccessor interface {
	GetBlockMetas() ([]*BlockMeta, error)
	GetBlockMeta(height int64) (*BlockMeta, error)
	SaveBlockMeta(height int64, blockMeta *BlockMeta) error
	PruneBlockMeta(height int64) error
	UpsertTransactionFee(fee float64, vSize int32) error
	GetTransactionFee() (float64, int32, error)
}

BlockMetaAccessor define methods need to access block meta storage

type Client 

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

Client observes bitcoin chain and allows to sign and broadcast tx

func NewClient 

func NewClient(thorKeys *thorclient.Keys, cfg config.ChainConfiguration, server *tssp.TssServer, bridge *thorclient.ThorchainBridge, m *metrics.Metrics, keySignPartyMgr *thorclient.KeySignPartyMgr) (*Client, error)

NewClient generates a new Client

func (*Client) BroadcastTx 

func (c *Client) BroadcastTx(txOut stypes.TxOutItem, payload []byte) error

BroadcastTx will broadcast the given payload to BTC chain

func (*Client) FetchTxs 

func (c *Client) FetchTxs(height int64) (types.TxIn, error)

FetchTxs retrieves txs for a block height

func (*Client) GetAccount 

func (c *Client) GetAccount(pkey common.PubKey) (common.Account, error)

GetAccount returns account with balance for an address

func (*Client) GetAccountByAddress 

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

func (*Client) GetAddress 

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

GetAddress returns address from pubkey

func (*Client) GetChain 

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

GetChain returns BTC Chain

func (*Client) GetConfig 

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

GetConfig - get the chain configuration

func (*Client) GetHeight 

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

GetHeight returns current block height

func (*Client) OnObservedTxIn 

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

OnObservedTxIn gets called from observer when we have a valid observation For bitcoin chain client we want to save the utxo we can spend later to sign

func (*Client) SignTx 

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

SignTx is going to generate the outbound transaction, and also sign it

func (*Client) Start 

func (c *Client) Start(globalTxsQueue chan types.TxIn, globalErrataQueue chan types.ErrataBlock)

Start starts the block scanner

func (*Client) Stop 

func (c *Client) Stop()

Stop stops the block scanner

type KeySignWrapper 

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

KeySignWrapper is a wrap of private key and also tss instance it also implement the txscript.Signable interface, and will decide which method to use based on the pubkey

func NewKeySignWrapper 

func NewKeySignWrapper(privateKey *btcec.PrivateKey, bridge *thorclient.ThorchainBridge, tssKeyManager tss.ThorchainKeyManager, keySignPartyMgr *thorclient.KeySignPartyMgr) (*KeySignWrapper, error)

NewKeysignWrapper create a new instance of Keysign Wrapper

func (*KeySignWrapper) GetSignable 

func (w *KeySignWrapper) GetSignable(poolPubKey common.PubKey) txscript.Signable

GetSignable based on the given poolPubKey

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) GetBlockMeta 

func (t *LevelDBBlockMetaAccessor) GetBlockMeta(height int64) (*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() ([]*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) GetTransactionFee 

func (t *LevelDBBlockMetaAccessor) GetTransactionFee() (float64, int32, error)

GetTransactionFee from db

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) SaveBlockMeta 

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

SaveBlockMeta persistent the given BlockMeta into storage

func (*LevelDBBlockMetaAccessor) UpsertTransactionFee 

func (t *LevelDBBlockMetaAccessor) UpsertTransactionFee(fee float64, vSize int32) error

UpsertTransactionFee update the transaction fee in storage

type TransactionFee 

type TransactionFee struct {
	Fee   float64 `json:"fee"`
	VSize int32   `json:"v_size"`
}

TransactionFee on bitcoin

type TssSignable 

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

TssSignable is a signable implementation backed by tss

func NewTssSignable 

func NewTssSignable(pubKey common.PubKey, manager tss.ThorchainKeyManager, keySignPartyMgr *thorclient.KeySignPartyMgr) (*TssSignable, error)

NewTssSignable create a new instance of TssSignable

func (*TssSignable) GetPubKey 

func (ts *TssSignable) GetPubKey() *btcec.PublicKey

func (*TssSignable) Sign 

func (ts *TssSignable) Sign(payload []byte) (*btcec.Signature, error)

Sign the given payload

type UnspentTransactionOutput 

type UnspentTransactionOutput struct {
	TxID        chainhash.Hash `json:"tx_id"`
	N           uint32         `json:"n"`
	Value       float64        `json:"value"`
	BlockHeight int64          `json:"block_height"`
	VaultPubKey common.PubKey  `json:"vault_pub_key"`
	Spent       bool           `json:"spent"`
}

UnspentTransactionOutput struct

func NewUnspentTransactionOutput 

func NewUnspentTransactionOutput(txID chainhash.Hash, n uint32, value float64, blockHeight int64, vaultPubKey common.PubKey) UnspentTransactionOutput

NewUnspentTransactionOutput create a new instance of UnspentTransactionOutput

func (UnspentTransactionOutput) GetKey 

func (t UnspentTransactionOutput) GetKey() string

GetKey return a key

Source Files

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