code.vegaprotocol.io/vega@v0.79.0/core/datasource/spec/adaptors/json.go (about)

     1  // Copyright (C) 2023 Gobalsky Labs Limited
     2  //
     3  // This program is free software: you can redistribute it and/or modify
     4  // it under the terms of the GNU Affero General Public License as
     5  // published by the Free Software Foundation, either version 3 of the
     6  // License, or (at your option) any later version.
     7  //
     8  // This program is distributed in the hope that it will be useful,
     9  // but WITHOUT ANY WARRANTY; without even the implied warranty of
    10  // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
    11  // GNU Affero General Public License for more details.
    12  //
    13  // You should have received a copy of the GNU Affero General Public License
    14  // along with this program.  If not, see <http://www.gnu.org/licenses/>.
    15  
    16  package adaptors
    17  
    18  import (
    19  	"encoding/json"
    20  	"fmt"
    21  
    22  	"code.vegaprotocol.io/vega/core/datasource/common"
    23  	"code.vegaprotocol.io/vega/libs/crypto"
    24  )
    25  
    26  // JSONAdaptor is a Adaptor for simple data broadcasting.
    27  // Link: https://compound.finance/docs/prices
    28  type JSONAdaptor struct{}
    29  
    30  // NewJSONAdaptor creates a new JSONAdaptor.
    31  func NewJSONAdaptor() *JSONAdaptor {
    32  	return &JSONAdaptor{}
    33  }
    34  
    35  // Normalise normalises a JSON payload into an common.Data.
    36  func (a *JSONAdaptor) Normalise(txPubKey crypto.PublicKey, data []byte) (*common.Data, error) {
    37  	kvs := map[string]string{}
    38  	err := json.Unmarshal(data, &kvs)
    39  	if err != nil {
    40  		return nil, fmt.Errorf("couldn't unmarshal JSON data: %w", err)
    41  	}
    42  
    43  	return &common.Data{
    44  		Signers: []*common.Signer{
    45  			common.CreateSignerFromString(txPubKey.Hex(), common.SignerTypePubKey),
    46  		},
    47  		Data: kvs,
    48  	}, nil
    49  }