bitcoin

package
v0.0.0-...-54f36b3 Latest Latest
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 Go to latest Published: Sep 30, 2020 License: Apache-2.0 Imports: 24 Imported by: 0

Documentation

Index

Constants

View Source 
const (
	// Blockchain is Bitcoin.
	Blockchain string = "Zen"

	// MainnetNetwork is the value of the network
	// in MainnetNetworkIdentifier.
	MainnetNetwork string = "main"

	// TestnetNetwork is the value of the network
	// in TestnetNetworkIdentifier.
	TestnetNetwork string = "test"

	// Decimals is the decimals value
	// used in Currency.
	Decimals = 8

	// SatoshisInBitcoin is the number of
	// Satoshis in 1 BTC (10^8).
	SatoshisInBitcoin = 100000000

	// InputOpType is used to describe
	// INPUT.
	InputOpType = "INPUT"

	// OutputOpType is used to describe
	// OUTPUT.
	OutputOpType = "OUTPUT"

	// CoinbaseOpType is used to describe
	// Coinbase.
	CoinbaseOpType = "COINBASE"

	// SuccessStatus is the status of all
	// Bitcoin operations because anything
	// on-chain is considered successful.
	SuccessStatus = "SUCCESS"

	// SkippedStatus is the status of all
	// operations that are skipped because
	// of BIP-30. You can read more about these
	// types of operations in BIP-30.
	SkippedStatus = "SKIPPED"

	// TransactionHashLength is the length
	// of any transaction hash in Bitcoin.
	TransactionHashLength = 64

	// NullData is returned by bitcoind
	// as the ScriptPubKey.Type for OP_RETURN
	// locking scripts.
	NullData = "nulldata"
)
View Source 
const (
	MinFeeRate            = float64(0.00001) // nolint:gomnd
	TransactionOverhead   = 12               // 4 version, 2 segwit flag, 1 vin, 1 vout, 4 lock time
	InputSize             = 68               // 4 prev index, 32 prev hash, 4 sequence, 1 script size, ~27 script witness
	OutputOverhead        = 9                // 8 value, 1 script size
	P2PKHScriptPubkeySize = 25               // P2PKH size
)

Fee estimate constants Source: https://bitcoinops.org/en/tools/calc-size/

Variables

View Source 
var (
	// ErrBlockNotFound is returned by when the requested block
	// cannot be found by the node
	ErrBlockNotFound = errors.New("unable to find block")

	// ErrJSONRPCError is returned when receiving an error from a JSON-RPC response
	ErrJSONRPCError = errors.New("JSON-RPC error")
)
View Source 
var (
	// MainnetGenesisBlockIdentifier is the genesis block for mainnet.
	MainnetGenesisBlockIdentifier = &types.BlockIdentifier{
		Hash: "0007104ccda289427919efc39dc9e4d499804b7bebc22df55f8b834301260602",
	}

	// MainnetParams are the params for mainnet.
	MainnetParams = &chaincfg.MainNetParams

	// MainnetCurrency is the *types.Currency for mainnet.
	MainnetCurrency = &types.Currency{
		Symbol:   "ZEN",
		Decimals: Decimals,
	}

	// TestnetGenesisBlockIdentifier is the genesis block for testnet.
	TestnetGenesisBlockIdentifier = &types.BlockIdentifier{
		Hash: "03e1c4bb705c871bf9bfda3e74b7f8f86bff267993c215a89d5795e3708e5e1f",
	}

	// TestnetParams are the params for testnet.
	TestnetParams = &chaincfg.TestNet3Params

	// TestnetCurrency is the *types.Currency for testnet.
	TestnetCurrency = &types.Currency{
		Symbol:   "ZNT",
		Decimals: Decimals,
	}

	// OperationTypes are all supported operation.Types.
	OperationTypes = []string{
		InputOpType,
		OutputOpType,
		CoinbaseOpType,
	}

	// OperationStatuses are all supported operation.Status.
	OperationStatuses = []*types.OperationStatus{
		{
			Status:     SuccessStatus,
			Successful: true,
		},
		{
			Status:     SkippedStatus,
			Successful: false,
		},
	}
)

Functions

func CoinIdentifier 

func CoinIdentifier(hash string, vout int64) string

CoinIdentifier converts a tx hash and vout into the canonical CoinIdentifier.Identifier used in rosetta-bitcoin.

func LocalhostURL 

func LocalhostURL(rpcPort int) string

LocalhostURL returns the URL to use for a client that is running at localhost.

func ParseCoinIdentifier 

func ParseCoinIdentifier(coinIdentifier *types.CoinIdentifier) (*chainhash.Hash, uint32, error)

ParseCoinIdentifier returns the corresponding hash and index associated with a *types.CoinIdentifier.

func ParseSingleAddress 

func ParseSingleAddress(
	chainParams *chaincfg.Params,
	script []byte,
) (txscript.ScriptClass, btcutil.Address, error)

ParseSingleAddress extracts a single address from a pkscript or throws an error.

func StartBitcoind 

func StartBitcoind(ctx context.Context, configPath string, g *errgroup.Group) error

StartBitcoind starts a bitcoind daemon in another goroutine and logs the results to the console.

func TransactionHash 

func TransactionHash(identifier string) string

TransactionHash extracts the transaction hash from a CoinIdentifier.Identifier.

Types

type Block 

type Block struct {
	Hash              string  `json:"hash"`
	Height            int64   `json:"height"`
	PreviousBlockHash string  `json:"previousblockhash"`
	Time              int64   `json:"time"`
	MedianTime        int64   `json:"mediantime"`
	Nonce             int64   `json:"nonce"`
	MerkleRoot        string  `json:"merkleroot"`
	Version           int32   `json:"version"`
	Size              int64   `json:"size"`
	Weight            int64   `json:"weight"`
	Bits              string  `json:"bits"`
	Difficulty        float64 `json:"difficulty"`

	Txs []*Transaction `json:"tx"`
}

Block is a raw Bitcoin block (with verbosity == 2).

func (Block) Metadata 

func (b Block) Metadata() (map[string]interface{}, error)

Metadata returns the metadata for a block.

type BlockMetadata 

type BlockMetadata struct {
	Nonce      int64   `json:"nonce,omitempty"`
	MerkleRoot string  `json:"merkleroot,omitempty"`
	Version    int32   `json:"version,omitempty"`
	Size       int64   `json:"size,omitempty"`
	Weight     int64   `json:"weight,omitempty"`
	MedianTime int64   `json:"mediantime,omitempty"`
	Bits       string  `json:"bits,omitempty"`
	Difficulty float64 `json:"difficulty,omitempty"`
}

BlockMetadata is a collection of useful metadata in a block.

type BlockchainInfo 

type BlockchainInfo struct {
	Chain         string `json:"chain"`
	Blocks        int64  `json:"blocks"`
	BestBlockHash string `json:"bestblockhash"`
}

BlockchainInfo is information about the Bitcoin network. This struct only contains the information necessary for this implementation.

type Client 

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

Client is used to fetch blocks from bitcoind and to parse Bitcoin block data into Rosetta types.

We opted not to use existing Bitcoin RPC libraries because they don't allow providing context in each request.

func NewClient 

func NewClient(
	baseURL string,
	genesisBlockIdentifier *types.BlockIdentifier,
	currency *types.Currency,
) *Client

NewClient creates a new Bitcoin client.

func (*Client) GetPeers 

func (b *Client) GetPeers(ctx context.Context) ([]*types.Peer, error)

GetPeers fetches the list of peer nodes

func (*Client) GetRawBlock 

func (b *Client) GetRawBlock(
	ctx context.Context,
	identifier *types.PartialBlockIdentifier,
) (*Block, []string, error)

GetRawBlock fetches a block (block) by *types.PartialBlockIdentifier.

func (*Client) NetworkStatus 

func (b *Client) NetworkStatus(ctx context.Context) (*types.NetworkStatusResponse, error)

NetworkStatus returns the *types.NetworkStatusResponse for bitcoind.

func (*Client) ParseBlock 

func (b *Client) ParseBlock(
	ctx context.Context,
	block *Block,
	coins map[string]*storage.AccountCoin,
) (*types.Block, error)

ParseBlock returns a parsed bitcoin block given a raw bitcoin block and a map of transactions containing inputs.

func (*Client) PruneBlockchain 

func (b *Client) PruneBlockchain(
	ctx context.Context,
	height int64,
) (int64, error)

PruneBlockchain prunes up to the provided height. https://bitcoincore.org/en/doc/0.20.0/rpc/blockchain/pruneblockchain

func (*Client) RawMempool 

func (b *Client) RawMempool(
	ctx context.Context,
) ([]string, error)

RawMempool returns an array of all transaction hashes currently in the mempool.

func (*Client) SendRawTransaction 

func (b *Client) SendRawTransaction(
	ctx context.Context,
	serializedTx string,
) (string, error)

SendRawTransaction submits a serialized transaction to bitcoind.

func (*Client) SuggestedFeeRate 

func (b *Client) SuggestedFeeRate(
	ctx context.Context,
	confTarget int64,
) (float64, error)

SuggestedFeeRate estimates the approximate fee per vKB needed to get a transaction in a block within conf_target.

type Input 

type Input struct {
	TxHash      string     `json:"txid"`
	Vout        int64      `json:"vout"`
	ScriptSig   *ScriptSig `json:"scriptSig"`
	Sequence    int64      `json:"sequence"`
	TxInWitness []string   `json:"txinwitness"`

	// Relevant when the input is the coinbase input
	Coinbase string `json:"coinbase"`
}

Input is a raw input in a Bitcoin transaction.

func (Input) Metadata 

func (i Input) Metadata() (map[string]interface{}, error)

Metadata returns the metadata for an input.

type OperationMetadata 

type OperationMetadata struct {
	// Coinbase Metadata
	Coinbase string `json:"coinbase,omitempty"`

	// Input Metadata
	ScriptSig   *ScriptSig `json:"scriptsig,omitempty"`
	Sequence    int64      `json:"sequence,omitempty"`
	TxInWitness []string   `json:"txinwitness,omitempty"`

	// Output Metadata
	ScriptPubKey *ScriptPubKey `json:"scriptPubKey,omitempty"`
}

OperationMetadata is a collection of useful metadata from Bitcoin inputs and outputs.

type Output 

type Output struct {
	Value        float64       `json:"value"`
	Index        int64         `json:"n"`
	ScriptPubKey *ScriptPubKey `json:"scriptPubKey"`
}

Output is a raw output in a Bitcoin transaction.

func (Output) Metadata 

func (o Output) Metadata() (map[string]interface{}, error)

Metadata returns the metadata for an output.

type PeerInfo 

type PeerInfo struct {
	Addr           string `json:"addr"`
	Version        int64  `json:"version"`
	SubVer         string `json:"subver"`
	StartingHeight int64  `json:"startingheight"`
	RelayTxes      bool   `json:"relaytxes"`
	LastSend       int64  `json:"lastsend"`
	LastRecv       int64  `json:"lastrecv"`
	BanScore       int64  `json:"banscore"`
	SyncedBlocks   int64  `json:"synced_blocks"`
	SyncedHeaders  int64  `json:"synced_headers"`
}

PeerInfo is a collection of relevant info about a particular peer.

type ScriptPubKey 

type ScriptPubKey struct {
	ASM          string   `json:"asm"`
	Hex          string   `json:"hex"`
	RequiredSigs int64    `json:"reqSigs,omitempty"`
	Type         string   `json:"type"`
	Addresses    []string `json:"addresses,omitempty"`
}

ScriptPubKey is a script placed on the output operations of a Bitcoin transaction that must be satisfied to spend the output.

type ScriptSig 

type ScriptSig struct {
	ASM string `json:"asm"`
	Hex string `json:"hex"`
}

ScriptSig is a script on the input operations of a Bitcoin transaction that satisfies the ScriptPubKey on an output being spent.

type Transaction 

type Transaction struct {
	Hex      string `json:"hex"`
	Hash     string `json:"txid"`
	Size     int64  `json:"size"`
	Vsize    int64  `json:"vsize"`
	Version  int32  `json:"version"`
	Locktime int64  `json:"locktime"`
	Weight   int64  `json:"weight"`

	Inputs  []*Input  `json:"vin"`
	Outputs []*Output `json:"vout"`
}

Transaction is a raw Bitcoin transaction.

func (Transaction) Metadata 

func (t Transaction) Metadata() (map[string]interface{}, error)

Metadata returns the metadata for a transaction.

type TransactionMetadata 

type TransactionMetadata struct {
	Size     int64 `json:"size,omitempty"`
	Vsize    int64 `json:"vsize,omitempty"`
	Version  int32 `json:"version,omitempty"`
	Locktime int64 `json:"locktime,omitempty"`
	Weight   int64 `json:"weight,omitempty"`
}

TransactionMetadata is a collection of useful metadata in a transaction.

Source Files

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