forked from TrueCloudLab/neoneo-go
545 lines
16 KiB
Go
545 lines
16 KiB
Go
package client
|
|
|
|
import (
|
|
"encoding/hex"
|
|
"strconv"
|
|
|
|
"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/state"
|
|
"github.com/nspcc-dev/neo-go/pkg/core/transaction"
|
|
"github.com/nspcc-dev/neo-go/pkg/crypto/hash"
|
|
"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"
|
|
)
|
|
|
|
// 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
|
|
}
|
|
|
|
// 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 = block.New(c.opts.Network)
|
|
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
|
|
)
|
|
resp.Network = c.opts.Network
|
|
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.Network = c.opts.Network
|
|
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) (*state.Contract, error) {
|
|
var (
|
|
params = request.NewRawParams(hash.StringLE())
|
|
resp = &state.Contract{}
|
|
)
|
|
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(c.opts.Network, 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
|
|
)
|
|
resp.Network = c.opts.Network
|
|
if err = c.performRequest("getrawtransaction", params, resp); err != nil {
|
|
return nil, err
|
|
}
|
|
return resp, nil
|
|
}
|
|
|
|
// GetStorageByID returns the stored value, according to the contract ID and the stored key.
|
|
func (c *Client) GetStorageByID(id int32, key []byte) ([]byte, error) {
|
|
return c.getStorage(request.NewRawParams(id, hex.EncodeToString(key)))
|
|
}
|
|
|
|
// GetStorageByHash returns the stored value, according to the contract script hash and the stored key.
|
|
func (c *Client) GetStorageByHash(hash util.Uint160, key []byte) ([]byte, error) {
|
|
return c.getStorage(request.NewRawParams(hash.StringLE(), hex.EncodeToString(key)))
|
|
}
|
|
|
|
func (c *Client) getStorage(params request.RawParams) ([]byte, error) {
|
|
var 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
|
|
}
|
|
|
|
// GetUnclaimedGas returns unclaimed GAS amount for the specified address.
|
|
func (c *Client) GetUnclaimedGas(address string) (util.Fixed8, error) {
|
|
var (
|
|
params = request.NewRawParams(address)
|
|
resp string
|
|
)
|
|
if err := c.performRequest("getunclaimedgas", params, &resp); err != nil {
|
|
return 0, err
|
|
}
|
|
i, err := strconv.ParseInt(resp, 10, 64)
|
|
if err != nil {
|
|
return 0, err
|
|
}
|
|
return util.Fixed8(i), 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 []byte, cosigners []transaction.Cosigner) (*result.Invoke, error) {
|
|
var p = request.NewRawParams(hex.EncodeToString(script))
|
|
return c.invokeSomething("invokescript", p, cosigners)
|
|
}
|
|
|
|
// 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(contract util.Uint160, operation string, params []smartcontract.Parameter, cosigners []transaction.Cosigner) (*result.Invoke, error) {
|
|
var p = request.NewRawParams(contract.StringLE(), operation, params)
|
|
return c.invokeSomething("invokefunction", p, cosigners)
|
|
}
|
|
|
|
// invokeSomething is an inner wrapper for Invoke* functions
|
|
func (c *Client) invokeSomething(method string, p request.RawParams, cosigners []transaction.Cosigner) (*result.Invoke, error) {
|
|
var resp = new(result.Invoke)
|
|
if cosigners != nil {
|
|
p.Values = append(p.Values, cosigners)
|
|
}
|
|
if err := c.performRequest(method, p, resp); err != nil {
|
|
// Retry with old-fashioned hashes (see neo/neo-modules#260).
|
|
if cosigners != nil {
|
|
var hashes = make([]util.Uint160, len(cosigners))
|
|
for i := range cosigners {
|
|
hashes[i] = cosigners[i].Account
|
|
}
|
|
p.Values[len(p.Values)-1] = hashes
|
|
err = c.performRequest(method, p, resp)
|
|
if err == nil {
|
|
return resp, 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 int64, netfee util.Fixed8, cosigners []transaction.Cosigner) (util.Uint256, error) {
|
|
var txHash util.Uint256
|
|
var err error
|
|
|
|
tx := transaction.New(c.opts.Network, script, sysfee)
|
|
tx.SystemFee = sysfee
|
|
tx.Cosigners = cosigners
|
|
|
|
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 {
|
|
script := acc.Contract.Script
|
|
if !cosigner.Account.Equals(hash.Hash160(acc.Contract.Script)) {
|
|
contract, err := c.GetContractState(cosigner.Account)
|
|
if err != nil {
|
|
return err
|
|
}
|
|
if contract == nil {
|
|
continue
|
|
}
|
|
script = contract.Script
|
|
}
|
|
netFee, sizeDelta := core.CalculateNetworkFee(script)
|
|
tx.NetworkFee += netFee
|
|
size += sizeDelta
|
|
}
|
|
fee, err := c.GetFeePerByte()
|
|
if err != nil {
|
|
return err
|
|
}
|
|
tx.NetworkFee += int64(size) * fee
|
|
return nil
|
|
}
|