forked from TrueCloudLab/neoneo-go
576 lines
17 KiB
Go
576 lines
17 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/encoding/address"
|
|
"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
|
|
}
|
|
|
|
// GetApplicationLog returns the contract log based on the specified txid.
|
|
func (c *Client) GetApplicationLog(hash util.Uint256) (*result.ApplicationLog, error) {
|
|
var (
|
|
params = request.NewRawParams(hash.StringLE())
|
|
resp = &result.ApplicationLog{}
|
|
)
|
|
if err := c.performRequest("getapplicationlog", params, resp); err != nil {
|
|
return nil, err
|
|
}
|
|
return resp, nil
|
|
}
|
|
|
|
// GetAssetState queries the asset information, based on the specified asset number.
|
|
func (c *Client) GetAssetState(hash util.Uint256) (*result.AssetState, error) {
|
|
var (
|
|
params = request.NewRawParams(hash.StringLE())
|
|
resp = &result.AssetState{}
|
|
)
|
|
if err := c.performRequest("getassetstate", params, resp); err != nil {
|
|
return nil, err
|
|
}
|
|
return resp, nil
|
|
}
|
|
|
|
// GetBestBlockHash returns the hash of the tallest block in the main chain.
|
|
func (c *Client) GetBestBlockHash() (util.Uint256, error) {
|
|
var resp = util.Uint256{}
|
|
if err := c.performRequest("getbestblockhash", request.NewRawParams(), &resp); err != nil {
|
|
return resp, err
|
|
}
|
|
return resp, nil
|
|
}
|
|
|
|
// GetBlockCount returns the number of blocks in the main chain.
|
|
func (c *Client) GetBlockCount() (uint32, error) {
|
|
var resp uint32
|
|
if err := c.performRequest("getblockcount", request.NewRawParams(), &resp); err != nil {
|
|
return resp, 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.
|
|
// NOTE: to get transaction.ID and transaction.Size, use t.Hash() and io.GetVarSize(t) respectively.
|
|
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
|
|
}
|
|
|
|
// GetBlockHash returns the hash value of the corresponding block, based on the specified index.
|
|
func (c *Client) GetBlockHash(index uint32) (util.Uint256, error) {
|
|
var (
|
|
params = request.NewRawParams(index)
|
|
resp = util.Uint256{}
|
|
)
|
|
if err := c.performRequest("getblockhash", params, &resp); err != nil {
|
|
return resp, err
|
|
}
|
|
return resp, nil
|
|
}
|
|
|
|
// GetBlockHeader returns the corresponding block header information from serialized hex string
|
|
// according to the specified script hash.
|
|
func (c *Client) GetBlockHeader(hash util.Uint256) (*block.Header, error) {
|
|
var (
|
|
params = request.NewRawParams(hash.StringLE())
|
|
resp string
|
|
h *block.Header
|
|
)
|
|
if err := c.performRequest("getblockheader", params, &resp); err != nil {
|
|
return nil, err
|
|
}
|
|
headerBytes, err := hex.DecodeString(resp)
|
|
if err != nil {
|
|
return nil, err
|
|
}
|
|
r := io.NewBinReaderFromBuf(headerBytes)
|
|
h = new(block.Header)
|
|
h.DecodeBinary(r)
|
|
if r.Err != nil {
|
|
return nil, r.Err
|
|
}
|
|
return h, nil
|
|
}
|
|
|
|
// GetBlockHeaderVerbose returns the corresponding block header information from Json format string
|
|
// according to the specified script hash.
|
|
func (c *Client) GetBlockHeaderVerbose(hash util.Uint256) (*result.Header, error) {
|
|
var (
|
|
params = request.NewRawParams(hash.StringLE(), 1)
|
|
resp = &result.Header{}
|
|
)
|
|
if err := c.performRequest("getblockheader", params, resp); err != nil {
|
|
return nil, err
|
|
}
|
|
return resp, nil
|
|
}
|
|
|
|
// GetBlockSysFee returns the system fees of the block, based on the specified index.
|
|
func (c *Client) GetBlockSysFee(index uint32) (util.Fixed8, error) {
|
|
var (
|
|
params = request.NewRawParams(index)
|
|
resp util.Fixed8
|
|
)
|
|
if err := c.performRequest("getblocksysfee", params, &resp); err != nil {
|
|
return resp, err
|
|
}
|
|
return resp, nil
|
|
}
|
|
|
|
// GetConnectionCount returns the current number of connections for the node.
|
|
func (c *Client) GetConnectionCount() (int, error) {
|
|
var (
|
|
params = request.NewRawParams()
|
|
resp int
|
|
)
|
|
if err := c.performRequest("getconnectioncount", params, &resp); err != nil {
|
|
return resp, err
|
|
}
|
|
return resp, nil
|
|
}
|
|
|
|
// GetContractState queries contract information, according to the contract script hash.
|
|
func (c *Client) GetContractState(hash util.Uint160) (*result.ContractState, error) {
|
|
var (
|
|
params = request.NewRawParams(hash.StringLE())
|
|
resp = &result.ContractState{}
|
|
)
|
|
if err := c.performRequest("getcontractstate", params, resp); err != nil {
|
|
return resp, err
|
|
}
|
|
return resp, nil
|
|
}
|
|
|
|
// GetNEP5Balances is a wrapper for getnep5balances RPC.
|
|
func (c *Client) GetNEP5Balances(address util.Uint160) (*result.NEP5Balances, error) {
|
|
params := request.NewRawParams(address.StringLE())
|
|
resp := new(result.NEP5Balances)
|
|
if err := c.performRequest("getnep5balances", params, resp); err != nil {
|
|
return nil, err
|
|
}
|
|
return resp, nil
|
|
}
|
|
|
|
// GetNEP5Transfers is a wrapper for getnep5transfers RPC.
|
|
func (c *Client) GetNEP5Transfers(address string) (*result.NEP5Transfers, error) {
|
|
params := request.NewRawParams(address)
|
|
resp := new(result.NEP5Transfers)
|
|
if err := c.performRequest("getnep5transfers", params, resp); err != nil {
|
|
return nil, err
|
|
}
|
|
return resp, nil
|
|
}
|
|
|
|
// GetPeers returns the list of nodes that the node is currently connected/disconnected from.
|
|
func (c *Client) GetPeers() (*result.GetPeers, error) {
|
|
var (
|
|
params = request.NewRawParams()
|
|
resp = &result.GetPeers{}
|
|
)
|
|
if err := c.performRequest("getpeers", params, resp); err != nil {
|
|
return resp, err
|
|
}
|
|
return resp, nil
|
|
}
|
|
|
|
// GetRawMemPool returns the list of unconfirmed transactions in memory.
|
|
func (c *Client) GetRawMemPool() ([]util.Uint256, error) {
|
|
var (
|
|
params = request.NewRawParams()
|
|
resp = new([]util.Uint256)
|
|
)
|
|
if err := c.performRequest("getrawmempool", params, resp); err != nil {
|
|
return *resp, 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
|
|
}
|
|
tx, err := transaction.NewTransactionFromBytes(txBytes)
|
|
if err != nil {
|
|
return nil, err
|
|
}
|
|
return tx, nil
|
|
}
|
|
|
|
// GetRawTransactionVerbose returns a transaction wrapper with additional
|
|
// metadata by transaction's hash.
|
|
// NOTE: to get transaction.ID and transaction.Size, use t.Hash() and io.GetVarSize(t) respectively.
|
|
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
|
|
}
|
|
|
|
// GetStorage returns the stored value, according to the contract script hash and the stored key.
|
|
func (c *Client) GetStorage(hash util.Uint160, key []byte) ([]byte, error) {
|
|
var (
|
|
params = request.NewRawParams(hash.StringLE(), hex.EncodeToString(key))
|
|
resp string
|
|
)
|
|
if err := c.performRequest("getstorage", params, &resp); err != nil {
|
|
return nil, err
|
|
}
|
|
res, err := hex.DecodeString(resp)
|
|
if err != nil {
|
|
return nil, err
|
|
}
|
|
return res, nil
|
|
}
|
|
|
|
// GetTransactionHeight returns the block index in which the transaction is found.
|
|
func (c *Client) GetTransactionHeight(hash util.Uint256) (uint32, error) {
|
|
var (
|
|
params = request.NewRawParams(hash.StringLE())
|
|
resp uint32
|
|
)
|
|
if err := c.performRequest("gettransactionheight", params, &resp); err != nil {
|
|
return resp, err
|
|
}
|
|
return resp, nil
|
|
}
|
|
|
|
// GetTxOut returns the corresponding unspent transaction output information (returned change),
|
|
// based on the specified hash and index.
|
|
func (c *Client) GetTxOut(hash util.Uint256, num int) (*result.TransactionOutput, error) {
|
|
var (
|
|
params = request.NewRawParams(hash.StringLE(), num)
|
|
resp = &result.TransactionOutput{}
|
|
)
|
|
if err := c.performRequest("gettxout", params, resp); err != nil {
|
|
return resp, err
|
|
}
|
|
return resp, nil
|
|
}
|
|
|
|
// GetUnclaimed returns unclaimed GAS amount of the specified address.
|
|
func (c *Client) GetUnclaimed(address string) (*result.Unclaimed, error) {
|
|
var (
|
|
params = request.NewRawParams(address)
|
|
resp = &result.Unclaimed{}
|
|
)
|
|
if err := c.performRequest("getunclaimed", 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
|
|
}
|
|
|
|
// GetValidators returns the current NEO consensus nodes information and voting status.
|
|
func (c *Client) GetValidators() ([]result.Validator, error) {
|
|
var (
|
|
params = request.NewRawParams()
|
|
resp = new([]result.Validator)
|
|
)
|
|
if err := c.performRequest("getvalidators", params, resp); err != nil {
|
|
return nil, err
|
|
}
|
|
return *resp, nil
|
|
}
|
|
|
|
// GetVersion returns the version information about the queried node.
|
|
func (c *Client) GetVersion() (*result.Version, error) {
|
|
var (
|
|
params = request.NewRawParams()
|
|
resp = &result.Version{}
|
|
)
|
|
if err := c.performRequest("getversion", 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
|
|
}
|
|
|
|
// SubmitBlock broadcasts a raw block over the NEO network.
|
|
func (c *Client) SubmitBlock(b block.Block) error {
|
|
var (
|
|
params request.RawParams
|
|
resp bool
|
|
)
|
|
buf := io.NewBufBinWriter()
|
|
b.EncodeBinary(buf.BinWriter)
|
|
if err := buf.Err; err != nil {
|
|
return err
|
|
}
|
|
params = request.NewRawParams(hex.EncodeToString(buf.Bytes()))
|
|
|
|
if err := c.performRequest("submitblock", params, &resp); err != nil {
|
|
return err
|
|
}
|
|
if !resp {
|
|
return errors.New("submitblock returned false")
|
|
}
|
|
return 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, acc *wallet.Account, sysfee util.Fixed8, netfee util.Fixed8) (util.Uint256, error) {
|
|
var txHash util.Uint256
|
|
var err error
|
|
|
|
tx := transaction.NewInvocationTX(script, sysfee)
|
|
tx.SystemFee = sysfee
|
|
|
|
validUntilBlock, err := c.CalculateValidUntilBlock()
|
|
if err != nil {
|
|
return txHash, errors.Wrap(err, "failed to add validUntilBlock to transaction")
|
|
}
|
|
tx.ValidUntilBlock = validUntilBlock
|
|
|
|
addr, err := address.StringToUint160(acc.Address)
|
|
if err != nil {
|
|
return txHash, errors.Wrap(err, "failed to get address")
|
|
}
|
|
tx.Sender = addr
|
|
|
|
err = c.AddNetworkFee(tx, acc)
|
|
if err != nil {
|
|
return txHash, errors.Wrapf(err, "failed to add network fee")
|
|
}
|
|
|
|
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
|
|
}
|
|
|
|
// ValidateAddress verifies that the address is a correct NEO address.
|
|
func (c *Client) ValidateAddress(address string) error {
|
|
var (
|
|
params = request.NewRawParams(address)
|
|
resp = &result.ValidateAddress{}
|
|
)
|
|
|
|
if err := c.performRequest("validateaddress", params, resp); err != nil {
|
|
return err
|
|
}
|
|
if !resp.IsValid {
|
|
return errors.New("validateaddress returned false")
|
|
}
|
|
return nil
|
|
}
|
|
|
|
// CalculateValidUntilBlock calculates ValidUntilBlock field for tx as
|
|
// current blockchain height + number of validators. Number of validators
|
|
// is the length of blockchain validators list got from GetValidators()
|
|
// method. Validators count is being cached and updated every 100 blocks.
|
|
func (c *Client) CalculateValidUntilBlock() (uint32, error) {
|
|
var (
|
|
result uint32
|
|
validatorsCount uint32
|
|
)
|
|
blockCount, err := c.GetBlockCount()
|
|
if err != nil {
|
|
return result, errors.Wrapf(err, "cannot get block count")
|
|
}
|
|
|
|
if c.cache.calculateValidUntilBlock.expiresAt > blockCount {
|
|
validatorsCount = c.cache.calculateValidUntilBlock.validatorsCount
|
|
} else {
|
|
validators, err := c.GetValidators()
|
|
if err != nil {
|
|
return result, errors.Wrapf(err, "cannot get validators")
|
|
}
|
|
validatorsCount = uint32(len(validators))
|
|
c.cache.calculateValidUntilBlock = calculateValidUntilBlockCache{
|
|
validatorsCount: validatorsCount,
|
|
expiresAt: blockCount + cacheTimeout,
|
|
}
|
|
}
|
|
return blockCount + validatorsCount, nil
|
|
}
|
|
|
|
// AddNetworkFee adds network fee for each witness script to transaction.
|
|
func (c *Client) AddNetworkFee(tx *transaction.Transaction, acc *wallet.Account) error {
|
|
size := io.GetVarSize(tx)
|
|
if acc.Contract != nil {
|
|
netFee, sizeDelta := core.CalculateNetworkFee(acc.Contract.Script)
|
|
tx.NetworkFee += netFee
|
|
size += sizeDelta
|
|
}
|
|
for _, cosigner := range tx.Cosigners {
|
|
contract, err := c.GetContractState(cosigner.Account)
|
|
if err != nil {
|
|
return err
|
|
}
|
|
if contract == nil {
|
|
continue
|
|
}
|
|
netFee, sizeDelta := core.CalculateNetworkFee(contract.Script)
|
|
tx.NetworkFee += netFee
|
|
size += sizeDelta
|
|
}
|
|
tx.NetworkFee += util.Fixed8(int64(size) * int64(c.GetFeePerByte()))
|
|
return nil
|
|
}
|
|
|
|
// GetFeePerByte returns transaction network fee per byte
|
|
func (c *Client) GetFeePerByte() util.Fixed8 {
|
|
// TODO: make it a part of policy contract
|
|
return util.Fixed8(1000)
|
|
}
|