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

     1  package snowgem
     2  
     3  import (
     4  	"encoding/json"
     5  
     6  	"github.com/trezor/blockbook/bchain"
     7  	"github.com/trezor/blockbook/bchain/coins/btc"
     8  
     9  	"github.com/golang/glog"
    10  	"github.com/juju/errors"
    11  )
    12  
    13  // SnowGemRPC is an interface to JSON-RPC bitcoind service
    14  type SnowGemRPC struct {
    15  	*btc.BitcoinRPC
    16  }
    17  
    18  // NewSnowGemRPC returns new SnowGemRPC instance
    19  func NewSnowGemRPC(config json.RawMessage, pushHandler func(bchain.NotificationType)) (bchain.BlockChain, error) {
    20  	b, err := btc.NewBitcoinRPC(config, pushHandler)
    21  	if err != nil {
    22  		return nil, err
    23  	}
    24  	z := &SnowGemRPC{
    25  		BitcoinRPC: b.(*btc.BitcoinRPC),
    26  	}
    27  	z.RPCMarshaler = btc.JSONMarshalerV1{}
    28  	z.ChainConfig.SupportsEstimateSmartFee = false
    29  	return z, nil
    30  }
    31  
    32  // Initialize initializes SnowGemRPC instance
    33  func (z *SnowGemRPC) Initialize() error {
    34  	ci, err := z.GetChainInfo()
    35  	if err != nil {
    36  		return err
    37  	}
    38  	chainName := ci.Chain
    39  
    40  	params := GetChainParams(chainName)
    41  
    42  	z.Parser = NewSnowGemParser(params, z.ChainConfig)
    43  
    44  	// parameters for getInfo request
    45  	if params.Net == MainnetMagic {
    46  		z.Testnet = false
    47  		z.Network = "livenet"
    48  	} else {
    49  		z.Testnet = true
    50  		z.Network = "testnet"
    51  	}
    52  
    53  	glog.Info("rpc: block chain ", params.Name)
    54  
    55  	return nil
    56  }
    57  
    58  // GetBlock returns block with given hash.
    59  func (z *SnowGemRPC) GetBlock(hash string, height uint32) (*bchain.Block, error) {
    60  	var err error
    61  	if hash == "" && height > 0 {
    62  		hash, err = z.GetBlockHash(height)
    63  		if err != nil {
    64  			return nil, err
    65  		}
    66  	}
    67  
    68  	glog.V(1).Info("rpc: getblock (verbosity=1) ", hash)
    69  
    70  	res := btc.ResGetBlockThin{}
    71  	req := btc.CmdGetBlock{Method: "getblock"}
    72  	req.Params.BlockHash = hash
    73  	req.Params.Verbosity = 1
    74  	err = z.Call(&req, &res)
    75  
    76  	if err != nil {
    77  		return nil, errors.Annotatef(err, "hash %v", hash)
    78  	}
    79  	if res.Error != nil {
    80  		return nil, errors.Annotatef(res.Error, "hash %v", hash)
    81  	}
    82  
    83  	txs := make([]bchain.Tx, 0, len(res.Result.Txids))
    84  	for _, txid := range res.Result.Txids {
    85  		tx, err := z.GetTransaction(txid)
    86  		if err != nil {
    87  			if err == bchain.ErrTxNotFound {
    88  				glog.Errorf("rpc: getblock: skipping transanction in block %s due error: %s", hash, err)
    89  				continue
    90  			}
    91  			return nil, err
    92  		}
    93  		txs = append(txs, *tx)
    94  	}
    95  	block := &bchain.Block{
    96  		BlockHeader: res.Result.BlockHeader,
    97  		Txs:         txs,
    98  	}
    99  	return block, nil
   100  }
   101  
   102  // GetTransactionForMempool returns a transaction by the transaction ID.
   103  // It could be optimized for mempool, i.e. without block time and confirmations
   104  func (z *SnowGemRPC) GetTransactionForMempool(txid string) (*bchain.Tx, error) {
   105  	return z.GetTransaction(txid)
   106  }
   107  
   108  // GetMempoolEntry returns mempool data for given transaction
   109  func (z *SnowGemRPC) GetMempoolEntry(txid string) (*bchain.MempoolEntry, error) {
   110  	return nil, errors.New("GetMempoolEntry: not implemented")
   111  }
   112  
   113  func isErrBlockNotFound(err *bchain.RPCError) bool {
   114  	return err.Message == "Block not found" ||
   115  		err.Message == "Block height out of range"
   116  }