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Merge pull request #511 from nspcc-dev/contract-deployment

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Contract deployment
This commit is contained in:
Vsevolod 2019-11-21 11:46:43 +03:00 committed by GitHub
commit 080b236275
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GPG key ID: 4AEE18F83AFDEB23
14 changed files with 351 additions and 87 deletions
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137
cli/smartcontract/smart_contract.go
View file

@ -11,9 +11,13 @@ import (
"os"
"path/filepath"
"github.com/CityOfZion/neo-go/pkg/crypto/hash"
"github.com/CityOfZion/neo-go/pkg/crypto/keys"
"github.com/CityOfZion/neo-go/pkg/rpc"
"github.com/CityOfZion/neo-go/pkg/util"
"github.com/CityOfZion/neo-go/pkg/vm"
"github.com/CityOfZion/neo-go/pkg/vm/compiler"
"github.com/go-yaml/yaml"
"github.com/pkg/errors"
"github.com/urfave/cli"
)
@ -21,6 +25,8 @@ import (
var (
errNoEndpoint = errors.New("no RPC endpoint specified, use option '--endpoint' or '-e'")
errNoInput = errors.New("no input file was found, specify an input file with the '--in or -i' flag")
errNoConfFile = errors.New("no config file was found, specify a config file with the '--config' or '-c' flag")
errNoWIF = errors.New("no WIF parameter found, specify it with the '--wif or -w' flag")
errNoSmartContractName = errors.New("no name was provided, specify the '--name or -n' flag")
errFileExist = errors.New("A file with given smart-contract name already exists")
)
@ -62,6 +68,33 @@ func NewCommands() []cli.Command {
},
},
},
{
Name: "deploy",
Usage: "deploy a smart contract (.avm with description)",
Action: contractDeploy,
Flags: []cli.Flag{
cli.StringFlag{
Name: "in, i",
Usage: "Input file for the smart contract (*.avm)",
},
cli.StringFlag{
Name: "config, c",
Usage: "configuration input file (*.yml)",
},
cli.StringFlag{
Name: "endpoint, e",
Usage: "RPC endpoint address (like 'http://seed4.ngd.network:20332')",
},
cli.StringFlag{
Name: "wif, w",
Usage: "key to sign deployed transaction (in wif format)",
},
cli.IntFlag{
Name: "gas, g",
Usage: "gas to pay for contract deployment",
},
},
},
{
Name: "testinvoke",
Usage: "Test an invocation of a smart contract on the blockchain",
@ -135,7 +168,17 @@ func initSmartContract(ctx *cli.Context) error {
// TODO: Fix the missing neo-go.yml file with the `init` command when the package manager is in place.
if !ctx.Bool("skip-details") {
details := parseContractDetails()
if err := ioutil.WriteFile(filepath.Join(basePath, "neo-go.yml"), details.toStormFile(), 0644); err != nil {
details.ReturnType = rpc.ByteArray
details.Parameters = make([]rpc.StackParamType, 2)
details.Parameters[0] = rpc.String
details.Parameters[1] = rpc.Array
project := &ProjectConfig{Contract: details}
b, err := yaml.Marshal(project)
if err != nil {
return cli.NewExitError(err, 1)
}
if err := ioutil.WriteFile(filepath.Join(basePath, "neo-go.yml"), b, 0644); err != nil {
return cli.NewExitError(err, 1)
}
}
@ -204,42 +247,14 @@ func testInvoke(ctx *cli.Context) error {
return nil
}
// ContractDetails contains contract metadata.
type ContractDetails struct {
Author string
Email string
Version string
ProjectName string
Description string
// ProjectConfig contains project metadata.
type ProjectConfig struct {
Version uint
Contract rpc.ContractDetails `yaml:"project"`
}
func (d ContractDetails) toStormFile() []byte {
buf := new(bytes.Buffer)
buf.WriteString("# NEO-GO specific configuration. Do not modify this unless you know what you are doing!\n")
buf.WriteString("neo-go:\n")
buf.WriteString(" version: 1.0\n")
buf.WriteString("\n")
buf.WriteString("# Project section contains information about your smart contract\n")
buf.WriteString("project:\n")
buf.WriteString(" author: " + d.Author)
buf.WriteString(" email: " + d.Email)
buf.WriteString(" version: " + d.Version)
buf.WriteString(" name: " + d.ProjectName)
buf.WriteString(" description: " + d.Description)
buf.WriteString("\n")
buf.WriteString("# Module section contains a list of imported modules\n")
buf.WriteString("# This will be automatically managed by the neo-go package manager\n")
buf.WriteString("modules: \n")
return buf.Bytes()
}
func parseContractDetails() ContractDetails {
details := ContractDetails{}
func parseContractDetails() rpc.ContractDetails {
details := rpc.ContractDetails{}
reader := bufio.NewReader(os.Stdin)
fmt.Print("Author: ")
@ -282,3 +297,55 @@ func inspect(ctx *cli.Context) error {
return nil
}
// contractDeploy deploys contract.
func contractDeploy(ctx *cli.Context) error {
in := ctx.String("in")
if len(in) == 0 {
return cli.NewExitError(errNoInput, 1)
}
confFile := ctx.String("config")
if len(confFile) == 0 {
return cli.NewExitError(errNoConfFile, 1)
}
endpoint := ctx.String("endpoint")
if len(endpoint) == 0 {
return cli.NewExitError(errNoEndpoint, 1)
}
wifStr := ctx.String("wif")
if len(wifStr) == 0 {
return cli.NewExitError(errNoWIF, 1)
}
gas := util.Fixed8FromInt64(int64(ctx.Int("gas")))
wif, err := keys.WIFDecode(wifStr, 0)
if err != nil {
return cli.NewExitError(fmt.Errorf("bad wif: %v", err), 1)
}
avm, err := ioutil.ReadFile(in)
if err != nil {
return cli.NewExitError(err, 1)
}
confBytes, err := ioutil.ReadFile(confFile)
if err != nil {
return cli.NewExitError(err, 1)
}
conf := ProjectConfig{}
err = yaml.Unmarshal(confBytes, &conf)
if err != nil {
return cli.NewExitError(fmt.Errorf("bad config: %v", err), 1)
}
client, err := rpc.NewClient(context.TODO(), endpoint, rpc.ClientOptions{})
if err != nil {
return cli.NewExitError(err, 1)
}
txHash, err := client.DeployContract(avm, &conf.Contract, wif, gas)
if err != nil {
return cli.NewExitError(fmt.Errorf("failed to deploy: %v", err), 1)
}
fmt.Printf("Sent deployment transaction %s for contract %s\n", txHash.ReverseString(), hash.Hash160(avm).ReverseString())
return nil
}

12
pkg/core/account_state.go
View file

@ -77,6 +77,9 @@ type UnspentBalance struct {
Value util.Fixed8 `json:"value"`
}
// UnspentBalances is a slice of UnspentBalance (mostly needed to sort them).
type UnspentBalances []UnspentBalance
// AccountState represents the state of a NEO account.
type AccountState struct {
Version uint8
@ -156,3 +159,12 @@ func (s *AccountState) GetBalanceValues() map[util.Uint256]util.Fixed8 {
}
return res
}
// Len returns the length of UnspentBalances (used to sort things).
func (us UnspentBalances) Len() int { return len(us) }
// Less compares two elements of UnspentBalances (used to sort things).
func (us UnspentBalances) Less(i, j int) bool { return us[i].Value < us[j].Value }
// Swap swaps two elements of UnspentBalances (used to sort things).
func (us UnspentBalances) Swap(i, j int) { us[i], us[j] = us[j], us[i] }

6
pkg/core/blockchain.go
View file

@ -943,8 +943,10 @@ func (bc *Blockchain) VerifyTx(t *transaction.Transaction, block *Block) error {
if ok := bc.verifyInputs(t); !ok {
return errors.New("invalid transaction's inputs")
}
if ok := bc.memPool.Verify(t); !ok {
return errors.New("invalid transaction due to conflicts with the memory pool")
if block == nil {
if ok := bc.memPool.Verify(t); !ok {
return errors.New("invalid transaction due to conflicts with the memory pool")
}
}
if IsDoubleSpend(bc.store, t) {
return errors.New("invalid transaction caused by double spending")

3
pkg/core/transaction/invocation.go
View file

@ -17,12 +17,13 @@ type InvocationTX struct {
}
// NewInvocationTX returns a new invocation transaction.
func NewInvocationTX(script []byte) *Transaction {
func NewInvocationTX(script []byte, gas util.Fixed8) *Transaction {
return &Transaction{
Type: InvocationType,
Version: 1,
Data: &InvocationTX{
Script: script,
Gas: gas,
Version: 1,
},
Attributes: []*Attribute{},

2
pkg/core/transaction/transaction_test.go
View file

@ -98,7 +98,7 @@ func TestDecodeEncodeInvocationTX(t *testing.T) {
func TestNewInvocationTX(t *testing.T) {
script := []byte{0x51}
tx := NewInvocationTX(script)
tx := NewInvocationTX(script, 1)
txData := tx.Data.(*InvocationTX)
assert.Equal(t, InvocationType, tx.Type)
assert.Equal(t, tx.Version, txData.Version)

26
pkg/rpc/client.go
View file

@ -11,7 +11,10 @@ import (
"sync"
"time"
"github.com/CityOfZion/neo-go/pkg/core"
"github.com/CityOfZion/neo-go/pkg/core/transaction"
"github.com/CityOfZion/neo-go/pkg/crypto/keys"
"github.com/CityOfZion/neo-go/pkg/util"
"github.com/pkg/errors"
)
@ -152,6 +155,29 @@ func (c *Client) SetClient(cli *http.Client) {
}
}
// CalculateInputs creates input transactions for the specified amount of given
// asset belonging to specified address. This implementation uses GetUnspents
// JSON-RPC call internally, so make sure your RPC server suppors that.
func (c *Client) CalculateInputs(address string, asset util.Uint256, cost util.Fixed8) ([]transaction.Input, util.Fixed8, error) {
var utxos core.UnspentBalances
resp, err := c.GetUnspents(address)
if err != nil || resp.Error != nil {
if err == nil {
err = fmt.Errorf("remote returned %d: %s", resp.Error.Code, resp.Error.Message)
}
return nil, util.Fixed8(0), errors.Wrapf(err, "cannot get balance for address %v", address)
}
for _, ubi := range resp.Result.Balance {
if asset.Equals(ubi.AssetHash) {
utxos = ubi.Unspents
break
}
}
return unspentsToInputs(utxos, cost)
}
func (c *Client) performRequest(method string, p params, v interface{}) error {
var (
r = request{

1
pkg/rpc/doc.go
View file

@ -41,6 +41,7 @@ Supported methods
getblock
getaccountstate
getunspents
invokescript
invokefunction
sendrawtransaction

23
pkg/rpc/neoScanBalanceGetter.go
View file

@ -6,6 +6,7 @@ import (
"net/http"
"sort"
"github.com/CityOfZion/neo-go/pkg/core"
"github.com/CityOfZion/neo-go/pkg/core/transaction"
"github.com/CityOfZion/neo-go/pkg/rpc/wrappers"
"github.com/CityOfZion/neo-go/pkg/util"
@ -36,7 +37,6 @@ func (s NeoScanServer) GetBalance(address string) ([]*Unspent, error) {
if err = json.NewDecoder(res.Body).Decode(&balance); err != nil {
return nil, errs.Wrap(err, "Failed to decode HTTP response")
}
return balance.Balance, nil
}
@ -55,9 +55,6 @@ func filterSpecificAsset(asset string, balance []*Unspent, assetBalance *Unspent
func (s NeoScanServer) CalculateInputs(address string, assetIDUint util.Uint256, cost util.Fixed8) ([]transaction.Input, util.Fixed8, error) {
var (
err error
num, i uint16
required = cost
selected = util.Fixed8(0)
us []*Unspent
assetUnspent Unspent
assetID = wrappers.GlobalAssets[assetIDUint.ReverseString()]
@ -66,9 +63,19 @@ func (s NeoScanServer) CalculateInputs(address string, assetIDUint util.Uint256,
return nil, util.Fixed8(0), errs.Wrapf(err, "Cannot get balance for address %v", address)
}
filterSpecificAsset(assetID, us, &assetUnspent)
sort.Sort(assetUnspent.Unspent)
return unspentsToInputs(assetUnspent.Unspent, cost)
}
for _, us := range assetUnspent.Unspent {
// unspentsToInputs uses UnspentBalances to create a slice of inputs for a new
// transcation containing the required amount of asset.
func unspentsToInputs(utxos core.UnspentBalances, required util.Fixed8) ([]transaction.Input, util.Fixed8, error) {
var (
num, i uint16
selected = util.Fixed8(0)
)
sort.Sort(utxos)
for _, us := range utxos {
if selected >= required {
break
}
@ -82,8 +89,8 @@ func (s NeoScanServer) CalculateInputs(address string, assetIDUint util.Uint256,
inputs := make([]transaction.Input, 0, num)
for i = 0; i < num; i++ {
inputs = append(inputs, transaction.Input{
PrevHash: assetUnspent.Unspent[i].TxID,
PrevIndex: assetUnspent.Unspent[i].N,
PrevHash: utxos[i].Tx,
PrevIndex: utxos[i].Index,
})
}

22
pkg/rpc/neoScanTypes.go
View file

@ -1,6 +1,9 @@
package rpc
import "github.com/CityOfZion/neo-go/pkg/util"
import (
"github.com/CityOfZion/neo-go/pkg/core"
"github.com/CityOfZion/neo-go/pkg/util"
)
/*
Definition of types, helper functions and variables
@ -15,19 +18,9 @@ type (
Path string // path to API endpoint without wallet address
}
// UTXO stores unspent TX output for some transaction.
UTXO struct {
Value util.Fixed8
TxID util.Uint256
N uint16
}
// Unspents is a slice of UTXOs (TODO: drop it?).
Unspents []UTXO
// Unspent stores Unspents per asset
Unspent struct {
Unspent Unspents
Unspent core.UnspentBalances
Asset string // "NEO" / "GAS"
Amount util.Fixed8 // total unspent of this asset
}
@ -38,8 +31,3 @@ type (
Address string
}
)
// functions for sorting array of `Unspents`
func (us Unspents) Len() int { return len(us) }
func (us Unspents) Less(i, j int) bool { return us[i].Value < us[j].Value }
func (us Unspents) Swap(i, j int) { us[i], us[j] = us[j], us[i] }

64
pkg/rpc/rpc.go
View file

@ -2,9 +2,10 @@ package rpc
import (
"encoding/hex"
"fmt"
"github.com/CityOfZion/neo-go/pkg/core/transaction"
"github.com/CityOfZion/neo-go/pkg/io"
"github.com/CityOfZion/neo-go/pkg/crypto/keys"
"github.com/CityOfZion/neo-go/pkg/smartcontract"
"github.com/CityOfZion/neo-go/pkg/util"
"github.com/pkg/errors"
@ -39,6 +40,18 @@ func (c *Client) GetAccountState(address string) (*AccountStateResponse, error)
return resp, nil
}
// GetUnspents returns UTXOs for the given NEO account.
func (c *Client) GetUnspents(address string) (*UnspentResponse, error) {
var (
params = newParams(address)
resp = &UnspentResponse{}
)
if err := c.performRequest("getunspents", params, resp); err != nil {
return nil, err
}
return resp, nil
}
// InvokeScript returns the result of the given script after running it true the VM.
// NOTE: This is a test invoke and will not affect the blockchain.
func (c *Client) InvokeScript(script string) (*InvokeScriptResponse, error) {
@ -96,9 +109,9 @@ func (c *Client) Invoke(script string, params []smartcontract.Parameter) (*Invok
// The given hex string needs to be signed with a keypair.
// When the result of the response object is true, the TX has successfully
// been broadcasted to the network.
func (c *Client) sendRawTransaction(rawTX string) (*response, error) {
func (c *Client) sendRawTransaction(rawTX *transaction.Transaction) (*response, error) {
var (
params = newParams(rawTX)
params = newParams(hex.EncodeToString(rawTX.Bytes()))
resp = &response{}
)
if err := c.performRequest("sendrawtransaction", params, resp); err != nil {
@ -113,9 +126,7 @@ func (c *Client) sendRawTransaction(rawTX string) (*response, error) {
func (c *Client) SendToAddress(asset util.Uint256, address string, amount util.Fixed8) (*SendToAddressResponse, error) {
var (
err error
buf = io.NewBufBinWriter()
rawTx *transaction.Transaction
rawTxStr string
txParams = ContractTxParams{
assetID: asset,
address: address,
@ -130,12 +141,7 @@ func (c *Client) SendToAddress(asset util.Uint256, address string, amount util.F
if rawTx, err = CreateRawContractTransaction(txParams); err != nil {
return nil, errors.Wrap(err, "failed to create raw transaction for `sendtoaddress`")
}
rawTx.EncodeBinary(buf.BinWriter)
if buf.Err != nil {
return nil, errors.Wrap(buf.Err, "failed to encode raw transaction to binary for `sendtoaddress`")
}
rawTxStr = hex.EncodeToString(buf.Bytes())
if resp, err = c.sendRawTransaction(rawTxStr); err != nil {
if resp, err = c.sendRawTransaction(rawTx); err != nil {
return nil, errors.Wrap(err, "failed to send raw transaction")
}
response.Error = resp.Error
@ -146,3 +152,39 @@ func (c *Client) SendToAddress(asset util.Uint256, address string, amount util.F
}
return response, nil
}
// DeployContract deploys given contract to the blockchain using given wif to
// sign the transaction and spending the amount of gas specified. It returns
// a hash of the deployment transaction and an error.
func (c *Client) DeployContract(avm []byte, contract *ContractDetails, wif *keys.WIF, gas util.Fixed8) (util.Uint256, error) {
var txHash util.Uint256
gasIDB, _ := hex.DecodeString("602c79718b16e442de58778e148d0b1084e3b2dffd5de6b7b16cee7969282de7")
gasID, _ := util.Uint256DecodeReverseBytes(gasIDB)
txScript, err := CreateDeploymentScript(avm, contract)
if err != nil {
return txHash, errors.Wrap(err, "failed creating deployment script")
}
tx := transaction.NewInvocationTX(txScript, gas)
fromAddress := wif.PrivateKey.Address()
if err = AddInputsAndUnspentsToTx(tx, fromAddress, gasID, gas, c); err != nil {
return txHash, errors.Wrap(err, "failed to add inputs and unspents to transaction")
}
if err = SignTx(tx, wif); err != nil {
return txHash, errors.Wrap(err, "failed to sign tx")
}
txHash = tx.Hash()
resp, err := c.sendRawTransaction(tx)
if err != nil {
return txHash, errors.Wrap(err, "failed sendning tx")
}
if resp.Error != nil {
return txHash, fmt.Errorf("remote returned %d: %s", resp.Error.Code, resp.Error.Message)
}
return txHash, nil
}

15
pkg/rpc/scdetails.go Normal file
View file

@ -0,0 +1,15 @@
package rpc
// ContractDetails contains contract metadata.
type ContractDetails struct {
Author string
Email string
Version string
ProjectName string `yaml:"name"`
Description string
HasStorage bool
HasDynamicInvocation bool
IsPayable bool
ReturnType StackParamType
Parameters []StackParamType
}

17
pkg/rpc/stack_param.go
View file

@ -103,6 +103,23 @@ func (t *StackParamType) UnmarshalJSON(data []byte) (err error) {
return
}
// MarshalYAML implements the YAML Marshaler interface.
func (t *StackParamType) MarshalYAML() (interface{}, error) {
return t.String(), nil
}
// UnmarshalYAML implements the YAML Unmarshaler interface.
func (t *StackParamType) UnmarshalYAML(unmarshal func(interface{}) error) error {
var name string
err := unmarshal(&name)
if err != nil {
return err
}
*t, err = StackParamTypeFromString(name)
return err
}
// StackParam represent a stack parameter.
type StackParam struct {
Type StackParamType `json:"type"`

102
pkg/rpc/txBuilder.go
View file

@ -1,11 +1,15 @@
package rpc
import (
"bytes"
"github.com/CityOfZion/neo-go/pkg/core/transaction"
"github.com/CityOfZion/neo-go/pkg/crypto"
"github.com/CityOfZion/neo-go/pkg/crypto/keys"
"github.com/CityOfZion/neo-go/pkg/io"
"github.com/CityOfZion/neo-go/pkg/smartcontract"
"github.com/CityOfZion/neo-go/pkg/util"
"github.com/CityOfZion/neo-go/pkg/vm"
errs "github.com/pkg/errors"
)
@ -16,10 +20,7 @@ func CreateRawContractTransaction(params ContractTxParams) (*transaction.Transac
tx = transaction.NewContractTX()
toAddressHash, fromAddressHash util.Uint160
fromAddress string
senderOutput, receiverOutput *transaction.Output
inputs []transaction.Input
spent util.Fixed8
witness transaction.Witness
receiverOutput *transaction.Output
wif, assetID, address, amount, balancer = params.wif, params.assetID, params.address, params.value, params.balancer
)
@ -39,32 +40,57 @@ func CreateRawContractTransaction(params ContractTxParams) (*transaction.Transac
Data: fromAddressHash.Bytes(),
})
if inputs, spent, err = balancer.CalculateInputs(fromAddress, assetID, amount); err != nil {
return nil, errs.Wrap(err, "Failed to get inputs for transaction")
if err = AddInputsAndUnspentsToTx(tx, fromAddress, assetID, amount, balancer); err != nil {
return nil, errs.Wrap(err, "failed to add inputs and unspents to transaction")
}
receiverOutput = transaction.NewOutput(assetID, amount, toAddressHash)
tx.AddOutput(receiverOutput)
if err = SignTx(tx, &wif); err != nil {
return nil, errs.Wrap(err, "failed to sign tx")
}
return tx, nil
}
// AddInputsAndUnspentsToTx adds inputs needed to transaction and one output
// with change.
func AddInputsAndUnspentsToTx(tx *transaction.Transaction, address string, assetID util.Uint256, amount util.Fixed8, balancer BalanceGetter) error {
scriptHash, err := crypto.Uint160DecodeAddress(address)
if err != nil {
return errs.Wrapf(err, "failed to take script hash from address: %v", address)
}
inputs, spent, err := balancer.CalculateInputs(address, assetID, amount)
if err != nil {
return errs.Wrap(err, "failed to get inputs")
}
for _, input := range inputs {
tx.AddInput(&input)
}
if senderUnspent := spent - amount; senderUnspent > 0 {
senderOutput = transaction.NewOutput(assetID, senderUnspent, fromAddressHash)
senderOutput := transaction.NewOutput(assetID, senderUnspent, scriptHash)
tx.AddOutput(senderOutput)
}
receiverOutput = transaction.NewOutput(assetID, amount, toAddressHash)
tx.AddOutput(receiverOutput)
return nil
}
// SignTx signs given transaction in-place using given key.
func SignTx(tx *transaction.Transaction, wif *keys.WIF) error {
var witness transaction.Witness
var err error
if witness.InvocationScript, err = GetInvocationScript(tx, wif); err != nil {
return nil, errs.Wrap(err, "Failed to create invocation script")
return errs.Wrap(err, "failed to create invocation script")
}
witness.VerificationScript = wif.GetVerificationScript()
tx.Scripts = append(tx.Scripts, &witness)
tx.Hash()
return tx, nil
return nil
}
// GetInvocationScript returns NEO VM script containing transaction signature.
func GetInvocationScript(tx *transaction.Transaction, wif keys.WIF) ([]byte, error) {
func GetInvocationScript(tx *transaction.Transaction, wif *keys.WIF) ([]byte, error) {
const (
pushbytes64 = 0x40
)
@ -84,3 +110,55 @@ func GetInvocationScript(tx *transaction.Transaction, wif keys.WIF) ([]byte, err
}
return append([]byte{pushbytes64}, signature...), nil
}
// CreateDeploymentScript returns a script that deploys given smart contract
// with its metadata.
func CreateDeploymentScript(avm []byte, contract *ContractDetails) ([]byte, error) {
var props smartcontract.PropertyState
script := new(bytes.Buffer)
if err := vm.EmitBytes(script, []byte(contract.Description)); err != nil {
return nil, err
}
if err := vm.EmitBytes(script, []byte(contract.Email)); err != nil {
return nil, err
}
if err := vm.EmitBytes(script, []byte(contract.Author)); err != nil {
return nil, err
}
if err := vm.EmitBytes(script, []byte(contract.Version)); err != nil {
return nil, err
}
if err := vm.EmitBytes(script, []byte(contract.ProjectName)); err != nil {
return nil, err
}
if contract.HasStorage {
props |= smartcontract.HasStorage
}
if contract.HasDynamicInvocation {
props |= smartcontract.HasDynamicInvoke
}
if contract.IsPayable {
props |= smartcontract.IsPayable
}
if err := vm.EmitInt(script, int64(props)); err != nil {
return nil, err
}
if err := vm.EmitInt(script, int64(contract.ReturnType)); err != nil {
return nil, err
}
params := make([]byte, len(contract.Parameters))
for k := range contract.Parameters {
params[k] = byte(contract.Parameters[k])
}
if err := vm.EmitBytes(script, params); err != nil {
return nil, err
}
if err := vm.EmitBytes(script, avm); err != nil {
return nil, err
}
if err := vm.EmitSyscall(script, "Neo.Contract.Create"); err != nil {
return nil, err
}
return script.Bytes(), nil
}

8
pkg/rpc/types.go
View file

@ -2,6 +2,7 @@ package rpc
import (
"github.com/CityOfZion/neo-go/pkg/core/transaction"
"github.com/CityOfZion/neo-go/pkg/rpc/wrappers"
"github.com/CityOfZion/neo-go/pkg/vm"
)
@ -27,6 +28,13 @@ type AccountStateResponse struct {
Result *Account `json:"result"`
}
// UnspentResponse represents server response to the `getunspents` command.
type UnspentResponse struct {
responseHeader
Error *Error `json:"error,omitempty"`
Result *wrappers.Unspents `json:"result,omitempty"`
}
// Account represents details about a NEO account.
type Account struct {
Version int `json:"version"`