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GetTransaction from zcashd instead of store

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This commit is contained in:
Aditya Kulkarni
2019-09-25 12:10:32 -07:00
parent 2f6dbd414d
commit 3eaabea547
1 changed files with 62 additions and 16 deletions
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78
frontend/service.go
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@@ -182,33 +182,79 @@ func (s *SqlStreamer) GetBlockRange(span *walletrpc.BlockRange, resp walletrpc.C
func (s *SqlStreamer) GetTransaction(ctx context.Context, txf *walletrpc.TxFilter) (*walletrpc.RawTransaction, error) {
var txBytes []byte
var txHeight int
var err error
var txHeight float64
if txf.Hash != nil {
leHashString := hex.EncodeToString(txf.Hash)
txBytes, txHeight, err = storage.GetTxByHash(ctx, s.db, leHashString)
txid := txf.Hash
for left, right := 0, len(txid)-1; left < right; left, right = left+1, right-1 {
txid[left], txid[right] = txid[right], txid[left]
}
leHashString := hex.EncodeToString(txid)
// First call to get the raw transaction bytes
params := make([]json.RawMessage, 1)
params[0] = json.RawMessage("\"" + leHashString + "\"")
result, rpcErr := s.client.RawRequest("getrawtransaction", params)
var err error
var errCode int64
// For some reason, the error responses are not JSON
if rpcErr != nil {
s.log.Errorf("Got error: %s", rpcErr.Error())
errParts := strings.SplitN(rpcErr.Error(), ":", 2)
errCode, err = strconv.ParseInt(errParts[0], 10, 32)
//Check to see if we are requesting a height the zcashd doesn't have yet
if err == nil && errCode == -8 {
return nil, err
}
return nil, err
}
var txhex string
err = json.Unmarshal(result, &txhex)
if err != nil {
return nil, err
}
return &walletrpc.RawTransaction{Data: txBytes, Height: uint64(txHeight)}, nil
txBytes, err = hex.DecodeString(txhex)
if err != nil {
return nil, err
}
// Second call to get height
params = make([]json.RawMessage, 2)
params[0] = json.RawMessage("\"" + leHashString + "\"")
params[1] = json.RawMessage("1")
result, rpcErr = s.client.RawRequest("getrawtransaction", params)
// For some reason, the error responses are not JSON
if rpcErr != nil {
s.log.Errorf("Got error: %s", rpcErr.Error())
errParts := strings.SplitN(rpcErr.Error(), ":", 2)
errCode, err = strconv.ParseInt(errParts[0], 10, 32)
//Check to see if we are requesting a height the zcashd doesn't have yet
if err == nil && errCode == -8 {
return nil, err
}
return nil, err
}
var txinfo interface{}
err = json.Unmarshal(result, &txinfo)
if err != nil {
return nil, err
}
txHeight = txinfo.(map[string]interface{})["height"].(float64)
return &walletrpc.RawTransaction{Data: txBytes, Height: uint64(txHeight)}, nil
}
if txf.Block.Hash != nil {
leHashString := hex.EncodeToString(txf.Hash)
txBytes, txHeight, err = storage.GetTxByHashAndIndex(ctx, s.db, leHashString, int(txf.Index))
if err != nil {
return nil, err
}
return &walletrpc.RawTransaction{Data: txBytes, Height: uint64(txHeight)}, nil
s.log.Error("Can't GetTransaction with a blockhash+num. Please call GetTransaction with txid")
return nil, errors.New("Can't GetTransaction with a blockhash+num. Please call GetTransaction with txid")
}
// A totally unset protobuf will attempt to fetch the genesis coinbase tx.
txBytes, txHeight, err = storage.GetTxByHeightAndIndex(ctx, s.db, int(txf.Block.Height), int(txf.Index))
if err != nil {
return nil, err
}
return &walletrpc.RawTransaction{Data: txBytes, Height: uint64(txHeight)}, nil
}