github.com/bchainhub/blockbook@v0.3.2/bchain/coins/grs/grsrpc.go (about)

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