github.com/cryptohub-digital/blockbook-fork@v0.0.0-20230713133354-673c927af7f1/bchain/coins/ravencoin/ravencoinrpc.go (about)

     1  package ravencoin
     2  
     3  import (
     4  	"encoding/json"
     5  
     6  	"github.com/cryptohub-digital/blockbook-fork/bchain"
     7  	"github.com/cryptohub-digital/blockbook-fork/bchain/coins/btc"
     8  	"github.com/golang/glog"
     9  	"github.com/juju/errors"
    10  )
    11  
    12  // RavencoinRPC is an interface to JSON-RPC bitcoind service.
    13  type RavencoinRPC struct {
    14  	*btc.BitcoinRPC
    15  }
    16  
    17  // NewRavencoinRPC returns new RavencoinRPC instance.
    18  func NewRavencoinRPC(config json.RawMessage, pushHandler func(bchain.NotificationType)) (bchain.BlockChain, error) {
    19  	b, err := btc.NewBitcoinRPC(config, pushHandler)
    20  	if err != nil {
    21  		return nil, err
    22  	}
    23  
    24  	s := &RavencoinRPC{
    25  		b.(*btc.BitcoinRPC),
    26  	}
    27  	s.RPCMarshaler = btc.JSONMarshalerV2{}
    28  	s.ChainConfig.SupportsEstimateFee = false
    29  
    30  	return s, nil
    31  }
    32  
    33  // Initialize initializes RavencoinRPC instance.
    34  func (b *RavencoinRPC) Initialize() error {
    35  	ci, err := b.GetChainInfo()
    36  	if err != nil {
    37  		return err
    38  	}
    39  	chainName := ci.Chain
    40  	params := GetChainParams(chainName)
    41  
    42  	// always create parser
    43  	b.Parser = NewRavencoinParser(params, b.ChainConfig)
    44  
    45  	// parameters for getInfo request
    46  	if params.Net == MainnetMagic {
    47  		b.Testnet = false
    48  		b.Network = "livenet"
    49  	} else {
    50  		b.Testnet = true
    51  		b.Network = "testnet"
    52  	}
    53  
    54  	glog.Info("rpc: block chain ", params.Name)
    55  
    56  	return nil
    57  }
    58  
    59  // GetBlock returns block with given hash.
    60  func (b *RavencoinRPC) GetBlock(hash string, height uint32) (*bchain.Block, error) {
    61  	var err error
    62  	if hash == "" && height > 0 {
    63  		hash, err = b.GetBlockHash(height)
    64  		if err != nil {
    65  			return nil, err
    66  		}
    67  	}
    68  
    69  	glog.V(1).Info("rpc: getblock (verbosity=1) ", hash)
    70  
    71  	res := btc.ResGetBlockThin{}
    72  	req := btc.CmdGetBlock{Method: "getblock"}
    73  	req.Params.BlockHash = hash
    74  	req.Params.Verbosity = 1
    75  	err = b.Call(&req, &res)
    76  
    77  	if err != nil {
    78  		return nil, errors.Annotatef(err, "hash %v", hash)
    79  	}
    80  	if res.Error != nil {
    81  		return nil, errors.Annotatef(res.Error, "hash %v", hash)
    82  	}
    83  
    84  	txs := make([]bchain.Tx, 0, len(res.Result.Txids))
    85  	for _, txid := range res.Result.Txids {
    86  		tx, err := b.GetTransaction(txid)
    87  		if err != nil {
    88  			if err == bchain.ErrTxNotFound {
    89  				glog.Errorf("rpc: getblock: skipping transaction in block %s due to error: %s", hash, err)
    90  				continue
    91  			}
    92  			return nil, err
    93  		}
    94  		txs = append(txs, *tx)
    95  	}
    96  	block := &bchain.Block{
    97  		BlockHeader: res.Result.BlockHeader,
    98  		Txs:         txs,
    99  	}
   100  	return block, nil
   101  }
   102  
   103  // GetTransactionForMempool returns a transaction by the transaction ID.
   104  // It could be optimized for mempool, i.e. without block time and confirmations
   105  func (b *RavencoinRPC) GetTransactionForMempool(txid string) (*bchain.Tx, error) {
   106  	return b.GetTransaction(txid)
   107  }