neoneo-go/pkg/rpc/client/rpc.go
2020-03-03 20:43:57 +03:00

259 lines
7.7 KiB
Go

package client
import (
"encoding/hex"
"github.com/nspcc-dev/neo-go/pkg/core"
"github.com/nspcc-dev/neo-go/pkg/core/block"
"github.com/nspcc-dev/neo-go/pkg/core/transaction"
"github.com/nspcc-dev/neo-go/pkg/crypto/keys"
"github.com/nspcc-dev/neo-go/pkg/io"
"github.com/nspcc-dev/neo-go/pkg/rpc/request"
"github.com/nspcc-dev/neo-go/pkg/rpc/response/result"
"github.com/nspcc-dev/neo-go/pkg/smartcontract"
"github.com/nspcc-dev/neo-go/pkg/util"
"github.com/nspcc-dev/neo-go/pkg/wallet"
"github.com/pkg/errors"
)
// GetAccountState returns detailed information about a NEO account.
func (c *Client) GetAccountState(address string) (*result.AccountState, error) {
var (
params = request.NewRawParams(address)
resp = &result.AccountState{}
)
if err := c.performRequest("getaccountstate", params, resp); err != nil {
return nil, err
}
return resp, nil
}
// GetBlockByIndex returns a block by its height.
func (c *Client) GetBlockByIndex(index uint32) (*block.Block, error) {
return c.getBlock(request.NewRawParams(index))
}
// GetBlockByHash returns a block by its hash.
func (c *Client) GetBlockByHash(hash util.Uint256) (*block.Block, error) {
return c.getBlock(request.NewRawParams(hash.StringLE()))
}
func (c *Client) getBlock(params request.RawParams) (*block.Block, error) {
var (
resp string
err error
b *block.Block
)
if err = c.performRequest("getblock", params, &resp); err != nil {
return nil, err
}
blockBytes, err := hex.DecodeString(resp)
if err != nil {
return nil, err
}
r := io.NewBinReaderFromBuf(blockBytes)
b = new(block.Block)
b.DecodeBinary(r)
if r.Err != nil {
return nil, r.Err
}
return b, nil
}
// GetBlockByIndexVerbose returns a block wrapper with additional metadata by
// its height.
func (c *Client) GetBlockByIndexVerbose(index uint32) (*result.Block, error) {
return c.getBlockVerbose(request.NewRawParams(index, 1))
}
// GetBlockByHashVerbose returns a block wrapper with additional metadata by
// its hash.
func (c *Client) GetBlockByHashVerbose(hash util.Uint256) (*result.Block, error) {
return c.getBlockVerbose(request.NewRawParams(hash.StringLE(), 1))
}
func (c *Client) getBlockVerbose(params request.RawParams) (*result.Block, error) {
var (
resp = &result.Block{}
err error
)
if err = c.performRequest("getblock", params, &resp); err != nil {
return nil, err
}
return resp, nil
}
// GetClaimable returns tx outputs which can be claimed.
func (c *Client) GetClaimable(address string) (*result.ClaimableInfo, error) {
params := request.NewRawParams(address)
resp := new(result.ClaimableInfo)
if err := c.performRequest("getclaimable", params, resp); err != nil {
return nil, err
}
return resp, nil
}
// GetRawTransaction returns a transaction by hash.
func (c *Client) GetRawTransaction(hash util.Uint256) (*transaction.Transaction, error) {
var (
params = request.NewRawParams(hash.StringLE())
resp string
err error
)
if err = c.performRequest("getrawtransaction", params, &resp); err != nil {
return nil, err
}
txBytes, err := hex.DecodeString(resp)
if err != nil {
return nil, err
}
r := io.NewBinReaderFromBuf(txBytes)
tx := new(transaction.Transaction)
tx.DecodeBinary(r)
if r.Err != nil {
return nil, r.Err
}
return tx, nil
}
// GetRawTransactionVerbose returns a transaction wrapper with additional
// metadata by transaction's hash.
func (c *Client) GetRawTransactionVerbose(hash util.Uint256) (*result.TransactionOutputRaw, error) {
var (
params = request.NewRawParams(hash.StringLE(), 1)
resp = &result.TransactionOutputRaw{}
err error
)
if err = c.performRequest("getrawtransaction", params, &resp); err != nil {
return nil, err
}
return resp, nil
}
// GetUnspents returns UTXOs for the given NEO account.
func (c *Client) GetUnspents(address string) (*result.Unspents, error) {
var (
params = request.NewRawParams(address)
resp = &result.Unspents{}
)
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) (*result.Invoke, error) {
var (
params = request.NewRawParams(script)
resp = &result.Invoke{}
)
if err := c.performRequest("invokescript", params, resp); err != nil {
return nil, err
}
return resp, nil
}
// InvokeFunction returns the results after calling the smart contract scripthash
// with the given operation and parameters.
// NOTE: this is test invoke and will not affect the blockchain.
func (c *Client) InvokeFunction(script, operation string, params []smartcontract.Parameter) (*result.Invoke, error) {
var (
p = request.NewRawParams(script, operation, params)
resp = &result.Invoke{}
)
if err := c.performRequest("invokefunction", p, resp); err != nil {
return nil, err
}
return resp, nil
}
// Invoke returns the results after calling the smart contract scripthash
// with the given parameters.
func (c *Client) Invoke(script string, params []smartcontract.Parameter) (*result.Invoke, error) {
var (
p = request.NewRawParams(script, params)
resp = &result.Invoke{}
)
if err := c.performRequest("invoke", p, resp); err != nil {
return nil, err
}
return resp, nil
}
// SendRawTransaction broadcasts a transaction over the NEO network.
// 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 *transaction.Transaction) error {
var (
params = request.NewRawParams(hex.EncodeToString(rawTX.Bytes()))
resp bool
)
if err := c.performRequest("sendrawtransaction", params, &resp); err != nil {
return err
}
if !resp {
return errors.New("sendrawtransaction returned false")
}
return nil
}
// TransferAsset sends an amount of specific asset to a given address.
// This call requires open wallet. (`wif` key in client struct.)
// If response.Result is `true` then transaction was formed correctly and was written in blockchain.
func (c *Client) TransferAsset(asset util.Uint256, address string, amount util.Fixed8) (util.Uint256, error) {
var (
err error
rawTx *transaction.Transaction
txParams = request.ContractTxParams{
AssetID: asset,
Address: address,
Value: amount,
WIF: c.WIF(),
Balancer: c.Balancer(),
}
resp util.Uint256
)
if rawTx, err = request.CreateRawContractTransaction(txParams); err != nil {
return resp, errors.Wrap(err, "failed to create raw transaction")
}
if err = c.SendRawTransaction(rawTx); err != nil {
return resp, errors.Wrap(err, "failed to send raw transaction")
}
return rawTx.Hash(), nil
}
// SignAndPushInvocationTx signs and pushes given script as an invocation
// transaction using given wif to sign it and spending the amount of gas
// specified. It returns a hash of the invocation transaction and an error.
func (c *Client) SignAndPushInvocationTx(script []byte, wif *keys.WIF, gas util.Fixed8) (util.Uint256, error) {
var txHash util.Uint256
var err error
tx := transaction.NewInvocationTX(script, gas)
fromAddress := wif.PrivateKey.Address()
if gas > 0 {
if err = request.AddInputsAndUnspentsToTx(tx, fromAddress, core.UtilityTokenID(), gas, c); err != nil {
return txHash, errors.Wrap(err, "failed to add inputs and unspents to transaction")
}
}
acc, err := wallet.NewAccountFromWIF(wif.S)
if err != nil {
return txHash, err
} else if err = acc.SignTx(tx); err != nil {
return txHash, errors.Wrap(err, "failed to sign tx")
}
txHash = tx.Hash()
err = c.SendRawTransaction(tx)
if err != nil {
return txHash, errors.Wrap(err, "failed sendning tx")
}
return txHash, nil
}