169 lines
4.6 KiB
Go
169 lines
4.6 KiB
Go
package zec
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import (
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"encoding/json"
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"github.com/golang/glog"
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"github.com/juju/errors"
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"github.com/trezor/blockbook/bchain"
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"github.com/trezor/blockbook/bchain/coins/btc"
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"github.com/trezor/blockbook/common"
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)
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// ZCashRPC is an interface to JSON-RPC bitcoind service
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type ZCashRPC struct {
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*btc.BitcoinRPC
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}
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type ResGetBlockChainInfo struct {
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Error *bchain.RPCError `json:"error"`
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Result struct {
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Chain string `json:"chain"`
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Blocks int `json:"blocks"`
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Headers int `json:"headers"`
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Bestblockhash string `json:"bestblockhash"`
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Difficulty common.JSONNumber `json:"difficulty"`
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Pruned bool `json:"pruned"`
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SizeOnDisk int64 `json:"size_on_disk"`
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Consensus struct {
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Chaintip string `json:"chaintip"`
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Nextblock string `json:"nextblock"`
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} `json:"consensus"`
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} `json:"result"`
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}
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// NewZCashRPC returns new ZCashRPC instance
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func NewZCashRPC(config json.RawMessage, pushHandler func(bchain.NotificationType)) (bchain.BlockChain, error) {
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b, err := btc.NewBitcoinRPC(config, pushHandler)
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if err != nil {
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return nil, err
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}
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z := &ZCashRPC{
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BitcoinRPC: b.(*btc.BitcoinRPC),
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}
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z.RPCMarshaler = btc.JSONMarshalerV1{}
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z.ChainConfig.SupportsEstimateSmartFee = false
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return z, nil
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}
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// Initialize initializes ZCashRPC instance
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func (z *ZCashRPC) Initialize() error {
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ci, err := z.GetChainInfo()
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if err != nil {
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return err
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}
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chainName := ci.Chain
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params := GetChainParams(chainName)
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z.Parser = NewZCashParser(params, z.ChainConfig)
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// parameters for getInfo request
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if params.Net == MainnetMagic {
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z.Testnet = false
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z.Network = "livenet"
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} else {
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z.Testnet = true
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z.Network = "testnet"
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}
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glog.Info("rpc: block chain ", params.Name)
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return nil
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}
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func (z *ZCashRPC) GetChainInfo() (*bchain.ChainInfo, error) {
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chainInfo := ResGetBlockChainInfo{}
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err := z.Call(&btc.CmdGetBlockChainInfo{Method: "getblockchaininfo"}, &chainInfo)
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if err != nil {
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return nil, err
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}
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if chainInfo.Error != nil {
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return nil, chainInfo.Error
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}
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networkInfo := btc.ResGetNetworkInfo{}
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err = z.Call(&btc.CmdGetNetworkInfo{Method: "getnetworkinfo"}, &networkInfo)
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if err != nil {
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return nil, err
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}
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if networkInfo.Error != nil {
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return nil, networkInfo.Error
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}
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return &bchain.ChainInfo{
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Bestblockhash: chainInfo.Result.Bestblockhash,
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Blocks: chainInfo.Result.Blocks,
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Chain: chainInfo.Result.Chain,
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Difficulty: string(chainInfo.Result.Difficulty),
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Headers: chainInfo.Result.Headers,
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SizeOnDisk: chainInfo.Result.SizeOnDisk,
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Version: string(networkInfo.Result.Version),
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Subversion: string(networkInfo.Result.Subversion),
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ProtocolVersion: string(networkInfo.Result.ProtocolVersion),
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Timeoffset: networkInfo.Result.Timeoffset,
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Consensus: chainInfo.Result.Consensus,
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Warnings: networkInfo.Result.Warnings,
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}, nil
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}
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// GetBlock returns block with given hash.
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func (z *ZCashRPC) GetBlock(hash string, height uint32) (*bchain.Block, error) {
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var err error
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if hash == "" && height > 0 {
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hash, err = z.GetBlockHash(height)
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if err != nil {
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return nil, err
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}
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}
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glog.V(1).Info("rpc: getblock (verbosity=1) ", hash)
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res := btc.ResGetBlockThin{}
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req := btc.CmdGetBlock{Method: "getblock"}
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req.Params.BlockHash = hash
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req.Params.Verbosity = 1
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err = z.Call(&req, &res)
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if err != nil {
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return nil, errors.Annotatef(err, "hash %v", hash)
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}
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if res.Error != nil {
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return nil, errors.Annotatef(res.Error, "hash %v", hash)
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}
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txs := make([]bchain.Tx, 0, len(res.Result.Txids))
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for _, txid := range res.Result.Txids {
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tx, err := z.GetTransaction(txid)
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if err != nil {
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if err == bchain.ErrTxNotFound {
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glog.Errorf("rpc: getblock: skipping transanction in block %s due error: %s", hash, err)
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continue
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}
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return nil, err
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}
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txs = append(txs, *tx)
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}
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block := &bchain.Block{
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BlockHeader: res.Result.BlockHeader,
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Txs: txs,
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}
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return block, nil
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}
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// GetTransactionForMempool returns a transaction by the transaction ID.
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// It could be optimized for mempool, i.e. without block time and confirmations
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func (z *ZCashRPC) GetTransactionForMempool(txid string) (*bchain.Tx, error) {
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return z.GetTransaction(txid)
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}
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// GetMempoolEntry returns mempool data for given transaction
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func (z *ZCashRPC) GetMempoolEntry(txid string) (*bchain.MempoolEntry, error) {
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return nil, errors.New("GetMempoolEntry: not implemented")
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}
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func isErrBlockNotFound(err *bchain.RPCError) bool {
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return err.Message == "Block not found" ||
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err.Message == "Block height out of range"
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}
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