decoder

ABI-DECODER

Go library for decoding data params and events from etherem transactions. Inspired by abi-decoder

Example

var myContractAbi = `
[
   {
   	"anonymous": false,
   	"inputs": [
   		{
   			"indexed": true,
   			"internalType": "string",
   			"name": "name",
   			"type": "string"
   		},
   		{
   			"indexed": false,
   			"internalType": "uint256",
   			"name": "age",
   			"type": "uint256"
   		},
   		{
   			"indexed": false,
   			"internalType": "address",
   			"name": "_addr",
   			"type": "address"
   		}
   	],
   	"name": "StudentAdded",
   	"type": "event"
   },
   {
   	"inputs": [],
   	"name": "addr",
   	"outputs": [
   		{
   			"internalType": "address",
   			"name": "",
   			"type": "address"
   		}
   	],
   	"stateMutability": "view",
   	"type": "function"
   },
   {
   	"inputs": [],
   	"name": "age",
   	"outputs": [
   		{
   			"internalType": "uint256",
   			"name": "",
   			"type": "uint256"
   		}
   	],
   	"stateMutability": "view",
   	"type": "function"
   },
   {
   	"inputs": [],
   	"name": "name",
   	"outputs": [
   		{
   			"internalType": "string",
   			"name": "",
   			"type": "string"
   		}
   	],
   	"stateMutability": "view",
   	"type": "function"
   },
   {
   	"inputs": [
   		{
   			"internalType": "string",
   			"name": "_name",
   			"type": "string"
   		},
   		{
   			"internalType": "uint256",
   			"name": "_age",
   			"type": "uint256"
   		},
   		{
   			"internalType": "address",
   			"name": "_addr",
   			"type": "address"
   		}
   	],
   	"name": "save",
   	"outputs": [],
   	"stateMutability": "nonpayable",
   	"type": "function"
   }
]
`

func main() {
   txData := "0x19e7a9660000000000000000000000000000000000000000000000000000000000000060000000000000000000000000000000005a4728ca063b522c0b728f8000000000000000000000000000000000839c6f5a014cbfa319e8fdfa01aac186638945a80000000000000000000000000000000000000000000000000000000000000006e5b08fe6988e0000000000000000000000000000000000000000000000000000"

   txDataDecoder := decoder.NewABIDecoder()
   txDataDecoder.SetABI(myContractAbi)
   method, err := txDataDecoder.DecodeMethod(txData)
   if err != nil {
   	log.Fatal(err)
   }
   fmt.Println(method.Name)
   for _, param := range method.Params {
   	fmt.Println(param)
   	fmt.Println(reflect.TypeOf(param.Value))
   }

   client, err := ethclient.Dial("rinkeby-rpc-url")
   if err != nil {
   	log.Fatal(err)
   }

   txHash := common.HexToHash("0x38687ffd5526c125c0c4074e9c39855fad31cbcd1c77b52650bebfa11b365bc0")
   r, err := client.TransactionReceipt(context.Background(), txHash)
   if err != nil {
       log.Fatal(err)
   }
   decodedLogs, err := txDataDecoder.DecodeLogs(r.Logs)
   if err != nil {
   	log.Fatal(err)
   }

   fmt.Println(decodedLogs)
}

Contribution

• Fork this repository
• Clone your repository
• Install dependencies
• Checkout a feature branch
• Feel free to add your features
• Make sure your features are fully tested
• Open a pull request, and enjoy (:

LICENSE

Package abi-decoder is licensed under the MIT License.