ERROR_DECODING_BYTESTRING Error When Deploying Contract On Hedera - go

Question

I am trying to deploy a contract on Hedera; the file is 9766 bytes, so I created a file and appended the contract to it, but now I get the error "exceptional receipt status: ERROR_DECODING_BYTESTRING: error retrieving contract creation record". I believe I did something wrong in my code. Any help will be appreciated.
package blockchain
import (
"encoding/json"
"fmt"
"io/ioutil"
"github.com/.../scanner/env"
"github.com/hashgraph/hedera-sdk-go/v2"
)
type contract struct {
Abi string `json:"abi"`
Bin string `json:"bin"`
}
type contracts struct {
Contracts map[string]contract `json:"contracts"`
Version string `json:"version"`
}
func DeployContract() {
var client *hedera.Client
var err error
// Retrieving network type from environment variable HEDERA_NETWORK
client, err = hedera.ClientForName(env.GetEnv["HEDERA_NETWORK"])
if err != nil {
println(err.Error(), ": error creating client")
return
}
// Retrieving operator ID from environment variable OPERATOR_ID
operatorAccountID, err := hedera.AccountIDFromString(env.GetEnv["OPERATOR_ID"])
if err != nil {
println(err.Error(), ": error converting string to AccountID")
return
}
// Retrieving operator key from environment variable OPERATOR_KEY
operatorKey, err := hedera.PrivateKeyFromString(env.GetEnv["OPERATOR_KEY"])
if err != nil {
println(err.Error(), ": error converting string to PrivateKey")
return
}
// Setting the client operator ID and key
client.SetOperator(operatorAccountID, operatorKey)
// Make sure to close client after running
defer func() {
err = client.Close()
if err != nil {
println(err.Error(), ": error closing client")
return
}
}()
// Read in the compiled contract from contract.json
rawSmartContract, err := ioutil.ReadFile("./contract/contract.json")
if err != nil {
println(err.Error(), ": error reading contract.json")
return
}
// Initialize contracts
var smartContract contracts = contracts{}
// Parse the rawSmartContract into smartContract
err = json.Unmarshal([]byte(rawSmartContract), &smartContract)
if err != nil {
println(err.Error(), ": error unmarshaling")
return
}
// Retrieve the bytecode from the parsed smart contract
smartContractByteCode := smartContract.Contracts["contract.sol:ScanInput"].Bin
//output contract bytecode size
fmt.Printf("Contract bytecode size: %v bytes\n", len(smartContractByteCode))
// Create a new file
newFileResponse, err := hedera.NewFileCreateTransaction().
// Accepts both Key and []Key
// All keys at the top level of a key list must sign to create or modify the file. Any one of
// the keys at the top level key list can sign to delete the file.
SetKeys(client.GetOperatorPublicKey()).
// Basic starting file content
SetContents([]byte("Initializing file.")).
SetMemo("go file append test").
// Set max fee if we don't want to get overcharged
SetMaxTransactionFee(hedera.NewHbar(2)).
Execute(client)
if err != nil {
println(err.Error(), ": error creating file")
return
}
// Get receipt to make sure the transaction worked
receipt, err := newFileResponse.GetReceipt(client)
if err != nil {
println(err.Error(), ": error retrieving file creation receipt")
return
}
// Retrieve file ID from the receipt
fileID := *receipt.FileID
// File append
fileResponse, err := hedera.NewFileAppendTransaction().
// Make sure the node is the same as the new file, as we don't have to wait for propagation
SetNodeAccountIDs([]hedera.AccountID{newFileResponse.NodeID}).
// File ID to append to
SetFileID(fileID).
// Contents that will be appended to the end of the file
SetContents([]byte(smartContractByteCode)).
// Set max transaction when you are not sure how much it will cost.
SetMaxTransactionFee(hedera.NewHbar(5)).
Execute(client)
if err != nil {
println(err.Error(), ": error executing file append transaction")
return
}
// Checking if transaction went through
receipt, err = fileResponse.GetReceipt(client)
if err != nil {
println(err.Error(), ": error retrieving file append transaction receipt")
return
}
// Checking if append succeeded
println(receipt.Status.String())
info, err := hedera.NewFileInfoQuery().
// Once again same node account ID
SetNodeAccountIDs([]hedera.AccountID{fileResponse.NodeID}).
// Only the file ID is required for this
SetFileID(fileID).
Execute(client)
if err != nil {
println(err.Error(), ": error executing file info query")
return
}
println("File size according to `FileInfoQuery`:", info.Size)
println("File memo according to `FileInfoQuery`:", info.FileMemo)
// Retrieve the receipt to make sure the transaction went through and to get bytecode file ID
byteCodeTransactionReceipt, err := newFileResponse.GetReceipt(client)
if err != nil {
println(err.Error(), ": error getting file create transaction receipt")
return
}
// Retrieve bytecode file ID from the receipt
byteCodeFileID := *byteCodeTransactionReceipt.FileID
fmt.Printf("contract bytecode file: %v\n", byteCodeFileID)
// Instantiate the contract instance
contractTransactionID, err := hedera.NewContractCreateTransaction().
// Set gas to create the contract
// Failing to set this to a sufficient amount will result in "INSUFFICIENT_GAS" status
SetGas(100000).
// The contract bytecode must be set to the file ID containing the contract bytecode
SetBytecodeFileID(byteCodeFileID).
// Set the admin key on the contract in case the contract should be deleted or
// updated in the future
SetAdminKey(client.GetOperatorPublicKey()).
Execute(client)
if err != nil {
println(err.Error(), ": error creating contract")
return
}
// Get the new contract record to make sure the transaction ran successfully
contractRecord, err := contractTransactionID.GetRecord(client)
if err != nil {
println(err.Error(), ": error retrieving contract creation record")
return
}
// Get the contract create result from the record
contractCreateResult, err := contractRecord.GetContractCreateResult()
if err != nil {
println(err.Error(), ": error retrieving contract creation result")
return
}
// Get the new contract ID from the receipt contained in the record
newContractID := *contractRecord.Receipt.ContractID
fmt.Printf("Contract create gas used: %v\n", contractCreateResult.GasUsed)
fmt.Printf("Contract create transaction fee: %v\n", contractRecord.TransactionFee)
fmt.Printf("contract: %v\n", newContractID)
}
Solidity Contract: https://drive.google.com/file/d/1YQ5B9Z2CL4i3R_4eSS3OQSEAbzSooehr/view?usp=sharing

Answer 1

I think I responded to this in Discord, but here goes for completion. I think the issue is that your code looks for Bin in the Json when it's bin.
Switch
smartContractByteCode := smartContract.Contracts["contract.sol:ScanInput"].Bin
for
smartContractByteCode := smartContract.Contracts["contract.sol:ScanInput"].bin