mirror of
https://github.com/nspcc-dev/neo-go.git
synced 2024-10-16 15:43:25 +00:00
279 lines
8.4 KiB
Go
279 lines
8.4 KiB
Go
package client
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import (
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"encoding/hex"
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"github.com/nspcc-dev/neo-go/pkg/core"
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"github.com/nspcc-dev/neo-go/pkg/core/block"
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"github.com/nspcc-dev/neo-go/pkg/core/transaction"
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"github.com/nspcc-dev/neo-go/pkg/crypto/keys"
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"github.com/nspcc-dev/neo-go/pkg/io"
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"github.com/nspcc-dev/neo-go/pkg/rpc/request"
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"github.com/nspcc-dev/neo-go/pkg/rpc/response/result"
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"github.com/nspcc-dev/neo-go/pkg/smartcontract"
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"github.com/nspcc-dev/neo-go/pkg/util"
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"github.com/nspcc-dev/neo-go/pkg/wallet"
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"github.com/pkg/errors"
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)
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// GetAccountState returns detailed information about a NEO account.
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func (c *Client) GetAccountState(address string) (*result.AccountState, error) {
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var (
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params = request.NewRawParams(address)
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resp = &result.AccountState{}
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)
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if err := c.performRequest("getaccountstate", params, resp); err != nil {
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return nil, err
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}
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return resp, nil
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}
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// GetBlockByIndex returns a block by its height.
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func (c *Client) GetBlockByIndex(index uint32) (*block.Block, error) {
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return c.getBlock(request.NewRawParams(index))
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}
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// GetBlockByHash returns a block by its hash.
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func (c *Client) GetBlockByHash(hash util.Uint256) (*block.Block, error) {
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return c.getBlock(request.NewRawParams(hash.StringLE()))
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}
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func (c *Client) getBlock(params request.RawParams) (*block.Block, error) {
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var (
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resp string
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err error
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b *block.Block
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)
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if err = c.performRequest("getblock", params, &resp); err != nil {
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return nil, err
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}
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blockBytes, err := hex.DecodeString(resp)
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if err != nil {
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return nil, err
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}
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r := io.NewBinReaderFromBuf(blockBytes)
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b = new(block.Block)
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b.DecodeBinary(r)
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if r.Err != nil {
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return nil, r.Err
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}
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return b, nil
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}
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// GetBlockByIndexVerbose returns a block wrapper with additional metadata by
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// its height.
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func (c *Client) GetBlockByIndexVerbose(index uint32) (*result.Block, error) {
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return c.getBlockVerbose(request.NewRawParams(index, 1))
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}
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// GetBlockByHashVerbose returns a block wrapper with additional metadata by
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// its hash.
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func (c *Client) GetBlockByHashVerbose(hash util.Uint256) (*result.Block, error) {
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return c.getBlockVerbose(request.NewRawParams(hash.StringLE(), 1))
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}
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func (c *Client) getBlockVerbose(params request.RawParams) (*result.Block, error) {
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var (
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resp = &result.Block{}
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err error
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)
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if err = c.performRequest("getblock", params, &resp); err != nil {
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return nil, err
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}
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return resp, nil
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}
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// GetClaimable returns tx outputs which can be claimed.
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func (c *Client) GetClaimable(address string) (*result.ClaimableInfo, error) {
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params := request.NewRawParams(address)
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resp := new(result.ClaimableInfo)
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if err := c.performRequest("getclaimable", params, resp); err != nil {
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return nil, err
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}
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return resp, nil
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}
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// GetNEP5Balances is a wrapper for getnep5balances RPC.
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func (c *Client) GetNEP5Balances(address util.Uint160) (*result.NEP5Balances, error) {
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params := request.NewRawParams(address.StringLE())
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resp := new(result.NEP5Balances)
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if err := c.performRequest("getnep5balances", params, resp); err != nil {
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return nil, err
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}
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return resp, nil
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}
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// GetNEP5Transfers is a wrapper for getnep5transfers RPC.
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func (c *Client) GetNEP5Transfers(address string) (*result.NEP5Transfers, error) {
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params := request.NewRawParams(address)
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resp := new(result.NEP5Transfers)
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if err := c.performRequest("getnep5transfers", params, resp); err != nil {
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return nil, err
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}
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return resp, nil
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}
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// GetRawTransaction returns a transaction by hash.
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func (c *Client) GetRawTransaction(hash util.Uint256) (*transaction.Transaction, error) {
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var (
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params = request.NewRawParams(hash.StringLE())
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resp string
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err error
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)
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if err = c.performRequest("getrawtransaction", params, &resp); err != nil {
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return nil, err
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}
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txBytes, err := hex.DecodeString(resp)
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if err != nil {
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return nil, err
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}
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r := io.NewBinReaderFromBuf(txBytes)
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tx := new(transaction.Transaction)
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tx.DecodeBinary(r)
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if r.Err != nil {
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return nil, r.Err
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}
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return tx, nil
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}
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// GetRawTransactionVerbose returns a transaction wrapper with additional
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// metadata by transaction's hash.
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func (c *Client) GetRawTransactionVerbose(hash util.Uint256) (*result.TransactionOutputRaw, error) {
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var (
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params = request.NewRawParams(hash.StringLE(), 1)
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resp = &result.TransactionOutputRaw{}
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err error
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)
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if err = c.performRequest("getrawtransaction", params, &resp); err != nil {
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return nil, err
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}
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return resp, nil
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}
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// GetUnspents returns UTXOs for the given NEO account.
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func (c *Client) GetUnspents(address string) (*result.Unspents, error) {
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var (
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params = request.NewRawParams(address)
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resp = &result.Unspents{}
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)
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if err := c.performRequest("getunspents", params, resp); err != nil {
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return nil, err
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}
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return resp, nil
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}
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// InvokeScript returns the result of the given script after running it true the VM.
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// NOTE: This is a test invoke and will not affect the blockchain.
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func (c *Client) InvokeScript(script string) (*result.Invoke, error) {
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var (
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params = request.NewRawParams(script)
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resp = &result.Invoke{}
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)
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if err := c.performRequest("invokescript", params, resp); err != nil {
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return nil, err
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}
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return resp, nil
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}
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// InvokeFunction returns the results after calling the smart contract scripthash
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// with the given operation and parameters.
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// NOTE: this is test invoke and will not affect the blockchain.
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func (c *Client) InvokeFunction(script, operation string, params []smartcontract.Parameter) (*result.Invoke, error) {
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var (
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p = request.NewRawParams(script, operation, params)
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resp = &result.Invoke{}
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)
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if err := c.performRequest("invokefunction", p, resp); err != nil {
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return nil, err
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}
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return resp, nil
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}
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// Invoke returns the results after calling the smart contract scripthash
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// with the given parameters.
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func (c *Client) Invoke(script string, params []smartcontract.Parameter) (*result.Invoke, error) {
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var (
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p = request.NewRawParams(script, params)
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resp = &result.Invoke{}
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)
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if err := c.performRequest("invoke", p, resp); err != nil {
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return nil, err
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}
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return resp, nil
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}
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// SendRawTransaction broadcasts a transaction over the NEO network.
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// The given hex string needs to be signed with a keypair.
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// When the result of the response object is true, the TX has successfully
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// been broadcasted to the network.
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func (c *Client) SendRawTransaction(rawTX *transaction.Transaction) error {
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var (
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params = request.NewRawParams(hex.EncodeToString(rawTX.Bytes()))
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resp bool
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)
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if err := c.performRequest("sendrawtransaction", params, &resp); err != nil {
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return err
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}
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if !resp {
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return errors.New("sendrawtransaction returned false")
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}
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return nil
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}
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// TransferAsset sends an amount of specific asset to a given address.
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// This call requires open wallet. (`wif` key in client struct.)
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// If response.Result is `true` then transaction was formed correctly and was written in blockchain.
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func (c *Client) TransferAsset(asset util.Uint256, address string, amount util.Fixed8) (util.Uint256, error) {
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var (
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err error
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rawTx *transaction.Transaction
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txParams = request.ContractTxParams{
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AssetID: asset,
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Address: address,
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Value: amount,
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WIF: c.WIF(),
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Balancer: c.Balancer(),
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}
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resp util.Uint256
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)
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if rawTx, err = request.CreateRawContractTransaction(txParams); err != nil {
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return resp, errors.Wrap(err, "failed to create raw transaction")
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}
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if err = c.SendRawTransaction(rawTx); err != nil {
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return resp, errors.Wrap(err, "failed to send raw transaction")
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}
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return rawTx.Hash(), nil
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}
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// SignAndPushInvocationTx signs and pushes given script as an invocation
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// transaction using given wif to sign it and spending the amount of gas
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// specified. It returns a hash of the invocation transaction and an error.
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func (c *Client) SignAndPushInvocationTx(script []byte, wif *keys.WIF, gas util.Fixed8) (util.Uint256, error) {
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var txHash util.Uint256
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var err error
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tx := transaction.NewInvocationTX(script, gas)
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fromAddress := wif.PrivateKey.Address()
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if gas > 0 {
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if err = request.AddInputsAndUnspentsToTx(tx, fromAddress, core.UtilityTokenID(), gas, c); err != nil {
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return txHash, errors.Wrap(err, "failed to add inputs and unspents to transaction")
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}
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}
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acc, err := wallet.NewAccountFromWIF(wif.S)
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if err != nil {
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return txHash, err
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} else if err = acc.SignTx(tx); err != nil {
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return txHash, errors.Wrap(err, "failed to sign tx")
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}
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txHash = tx.Hash()
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err = c.SendRawTransaction(tx)
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if err != nil {
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return txHash, errors.Wrap(err, "failed sendning tx")
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}
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return txHash, nil
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}
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