github.com/trezor/blockbook@v0.4.1-0.20240328132726-e9a08582ee2c/bchain/coins/dash/dashrpc.go (about)

     1  package dash
     2  
     3  import (
     4  	"encoding/json"
     5  
     6  	"github.com/golang/glog"
     7  	"github.com/juju/errors"
     8  	"github.com/trezor/blockbook/bchain"
     9  	"github.com/trezor/blockbook/bchain/coins/btc"
    10  )
    11  
    12  const firstBlockWithSpecialTransactions = 1028160
    13  
    14  // DashRPC is an interface to JSON-RPC bitcoind service
    15  type DashRPC struct {
    16  	*btc.BitcoinRPC
    17  }
    18  
    19  // NewDashRPC returns new DashRPC instance
    20  func NewDashRPC(config json.RawMessage, pushHandler func(bchain.NotificationType)) (bchain.BlockChain, error) {
    21  	b, err := btc.NewBitcoinRPC(config, pushHandler)
    22  	if err != nil {
    23  		return nil, err
    24  	}
    25  
    26  	s := &DashRPC{
    27  		b.(*btc.BitcoinRPC),
    28  	}
    29  	s.RPCMarshaler = btc.JSONMarshalerV1{}
    30  
    31  	return s, nil
    32  }
    33  
    34  // Initialize initializes DashRPC instance.
    35  func (b *DashRPC) Initialize() error {
    36  	ci, err := b.GetChainInfo()
    37  	if err != nil {
    38  		return err
    39  	}
    40  	chainName := ci.Chain
    41  
    42  	params := GetChainParams(chainName)
    43  
    44  	// always create parser
    45  	b.Parser = NewDashParser(params, b.ChainConfig)
    46  
    47  	// parameters for getInfo request
    48  	if params.Net == MainnetMagic {
    49  		b.Testnet = false
    50  		b.Network = "livenet"
    51  	} else {
    52  		b.Testnet = true
    53  		b.Network = "testnet"
    54  	}
    55  
    56  	glog.Info("rpc: block chain ", params.Name)
    57  
    58  	return nil
    59  }
    60  
    61  // GetBlock returns block with given hash
    62  func (b *DashRPC) GetBlock(hash string, height uint32) (*bchain.Block, error) {
    63  	if hash == "" && height < firstBlockWithSpecialTransactions {
    64  		return b.BitcoinRPC.GetBlock(hash, height)
    65  	}
    66  
    67  	var err error
    68  	if hash == "" && height > 0 {
    69  		hash, err = b.GetBlockHash(height)
    70  		if err != nil {
    71  			return nil, err
    72  		}
    73  	}
    74  
    75  	glog.V(1).Info("rpc: getblock (verbosity=1) ", hash)
    76  
    77  	res := btc.ResGetBlockThin{}
    78  	req := btc.CmdGetBlock{Method: "getblock"}
    79  	req.Params.BlockHash = hash
    80  	req.Params.Verbosity = 1
    81  	err = b.Call(&req, &res)
    82  
    83  	if err != nil {
    84  		return nil, errors.Annotatef(err, "hash %v", hash)
    85  	}
    86  	if res.Error != nil {
    87  		return nil, errors.Annotatef(res.Error, "hash %v", hash)
    88  	}
    89  
    90  	txs := make([]bchain.Tx, 0, len(res.Result.Txids))
    91  	for _, txid := range res.Result.Txids {
    92  		tx, err := b.GetTransaction(txid)
    93  		if err != nil {
    94  			if err == bchain.ErrTxNotFound {
    95  				glog.Errorf("rpc: getblock: skipping transanction in block %s due error: %s", hash, err)
    96  				continue
    97  			}
    98  			return nil, err
    99  		}
   100  		txs = append(txs, *tx)
   101  	}
   102  	block := &bchain.Block{
   103  		BlockHeader: res.Result.BlockHeader,
   104  		Txs:         txs,
   105  	}
   106  	return block, nil
   107  }
   108  
   109  // GetTransactionForMempool returns a transaction by the transaction ID.
   110  // It could be optimized for mempool, i.e. without block time and confirmations
   111  func (b *DashRPC) GetTransactionForMempool(txid string) (*bchain.Tx, error) {
   112  	return b.GetTransaction(txid)
   113  }