113 lines
2.9 KiB
Go
113 lines
2.9 KiB
Go
package litecoin
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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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)
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// LitecoinRPC is an interface to JSON-RPC bitcoind service.
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type LitecoinRPC struct {
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*btc.BitcoinRPC
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}
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// NewLitecoinRPC returns new LitecoinRPC instance.
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func NewLitecoinRPC(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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s := &LitecoinRPC{
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b.(*btc.BitcoinRPC),
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}
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s.RPCMarshaler = btc.JSONMarshalerV2{}
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s.ChainConfig.SupportsEstimateFee = false
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return s, nil
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}
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// Initialize initializes LitecoinRPC instance.
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func (b *LitecoinRPC) Initialize() error {
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ci, err := b.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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glog.Info("Chain name ", chainName)
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params := GetChainParams(chainName)
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// always create parser
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b.Parser = NewLitecoinParser(params, b.ChainConfig)
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// parameters for getInfo request
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if params.Net == MainnetMagic {
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b.Testnet = false
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b.Network = "livenet"
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} else {
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b.Testnet = true
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b.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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// GetBlock returns block with given hash.
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// Litecoin cannot use optimized BitcoinRPC.GetBlock since v 0.21.2,
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// which introduced MWEB fields to the transaction data and made the serialized block incompatible with Bitcoin wire protocol
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func (b *LitecoinRPC) 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 = b.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 = b.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 := b.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 transaction 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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// Litecoin cannot use optimized BitcoinRPC.GetTransactionForMempool since v 0.21.2,
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// which introduced MWEB fields to the transaction data and made the serialized transaction incompatible with Bitcoin wire protocol
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func (b *LitecoinRPC) GetTransactionForMempool(txid string) (*bchain.Tx, error) {
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return b.GetTransaction(txid)
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}
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