WIP RPC interface
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obscuren
311
rpc/packages.go
Normal file
311
rpc/packages.go
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@ -0,0 +1,311 @@
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package rpc
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import (
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"encoding/json"
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"errors"
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"math/big"
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"strings"
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"github.com/ethereum/eth-go/ethpipe"
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"github.com/ethereum/eth-go/ethutil"
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)
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type EthereumApi struct {
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pipe *ethpipe.JSPipe
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}
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type JsonArgs interface {
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requirements() error
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}
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type BlockResponse struct {
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JsonResponse
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}
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type GetBlockArgs struct {
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BlockNumber int
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Hash string
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}
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type ErrorResponse struct {
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Error bool `json:"error"`
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ErrorText string `json:"errorText"`
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}
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type JsonResponse interface {
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}
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type SuccessRes struct {
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Error bool `json:"error"`
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Result JsonResponse `json:"result"`
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}
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func NewSuccessRes(object JsonResponse) string {
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e := SuccessRes{Error: false, Result: object}
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res, err := json.Marshal(e)
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if err != nil {
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// This should never happen
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panic("Creating json error response failed, help")
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}
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success := string(res)
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return success
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}
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func NewErrorResponse(msg string) error {
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e := ErrorResponse{Error: true, ErrorText: msg}
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res, err := json.Marshal(e)
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if err != nil {
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// This should never happen
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panic("Creating json error response failed, help")
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}
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newErr := errors.New(string(res))
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return newErr
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}
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func (b *GetBlockArgs) requirements() error {
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if b.BlockNumber == 0 && b.Hash == "" {
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return NewErrorResponse("GetBlock requires either a block 'number' or a block 'hash' as argument")
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}
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return nil
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}
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func (p *EthereumApi) GetBlock(args *GetBlockArgs, reply *string) error {
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err := args.requirements()
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if err != nil {
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return err
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}
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block := p.pipe.BlockByHash(args.Hash)
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*reply = NewSuccessRes(block)
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return nil
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}
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type NewTxArgs struct {
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Sec string
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Recipient string
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Value string
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Gas string
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GasPrice string
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Init string
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Body string
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}
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type TxResponse struct {
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Hash string
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}
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func (a *NewTxArgs) requirements() error {
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if a.Recipient == "" {
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return NewErrorResponse("Transact requires a 'recipient' address as argument")
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}
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if a.Value == "" {
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return NewErrorResponse("Transact requires a 'value' as argument")
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}
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if a.Gas == "" {
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return NewErrorResponse("Transact requires a 'gas' value as argument")
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}
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if a.GasPrice == "" {
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return NewErrorResponse("Transact requires a 'gasprice' value as argument")
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}
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return nil
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}
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func (a *NewTxArgs) requirementsContract() error {
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if a.Value == "" {
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return NewErrorResponse("Create requires a 'value' as argument")
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}
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if a.Gas == "" {
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return NewErrorResponse("Create requires a 'gas' value as argument")
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}
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if a.GasPrice == "" {
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return NewErrorResponse("Create requires a 'gasprice' value as argument")
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}
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if a.Body == "" {
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return NewErrorResponse("Create requires a 'body' value as argument")
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}
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return nil
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}
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func (p *EthereumApi) Transact(args *NewTxArgs, reply *string) error {
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err := args.requirements()
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if err != nil {
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return err
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}
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result, _ := p.pipe.Transact(p.pipe.Key().PrivateKey, args.Recipient, args.Value, args.Gas, args.GasPrice, args.Body)
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*reply = NewSuccessRes(result)
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return nil
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}
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func (p *EthereumApi) Create(args *NewTxArgs, reply *string) error {
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err := args.requirementsContract()
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if err != nil {
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return err
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}
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result, _ := p.pipe.Transact(p.pipe.Key().PrivateKey, "", args.Value, args.Gas, args.GasPrice, args.Body)
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*reply = NewSuccessRes(result)
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return nil
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}
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type PushTxArgs struct {
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Tx string
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}
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func (a *PushTxArgs) requirementsPushTx() error {
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if a.Tx == "" {
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return NewErrorResponse("PushTx requires a 'tx' as argument")
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}
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return nil
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}
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func (p *EthereumApi) PushTx(args *PushTxArgs, reply *string) error {
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err := args.requirementsPushTx()
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if err != nil {
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return err
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}
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result, _ := p.pipe.PushTx(args.Tx)
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*reply = NewSuccessRes(result)
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return nil
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}
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func (p *EthereumApi) GetKey(args interface{}, reply *string) error {
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*reply = NewSuccessRes(p.pipe.Key())
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return nil
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}
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type GetStorageArgs struct {
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Address string
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Key string
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}
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func (a *GetStorageArgs) requirements() error {
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if a.Address == "" {
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return NewErrorResponse("GetStorageAt requires an 'address' value as argument")
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}
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if a.Key == "" {
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return NewErrorResponse("GetStorageAt requires an 'key' value as argument")
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}
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return nil
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}
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type GetStorageAtRes struct {
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Key string `json:"key"`
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Value string `json:"value"`
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Address string `json:"address"`
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}
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func (p *EthereumApi) GetStorageAt(args *GetStorageArgs, reply *string) error {
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err := args.requirements()
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if err != nil {
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return err
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}
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state := p.pipe.World().SafeGet(ethutil.Hex2Bytes(args.Address))
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var hx string
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if strings.Index(args.Key, "0x") == 0 {
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hx = string([]byte(args.Key)[2:])
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} else {
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// Convert the incoming string (which is a bigint) into hex
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i, _ := new(big.Int).SetString(args.Key, 10)
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hx = ethutil.Bytes2Hex(i.Bytes())
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}
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logger.Debugf("GetStorageAt(%s, %s)\n", args.Address, hx)
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value := state.Storage(ethutil.Hex2Bytes(hx))
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*reply = NewSuccessRes(GetStorageAtRes{Address: args.Address, Key: args.Key, Value: value.Str()})
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return nil
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}
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type GetTxCountArgs struct {
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Address string `json:"address"`
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}
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type GetTxCountRes struct {
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Nonce int `json:"nonce"`
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}
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func (a *GetTxCountArgs) requirements() error {
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if a.Address == "" {
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return NewErrorResponse("GetTxCountAt requires an 'address' value as argument")
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}
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return nil
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}
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type GetPeerCountRes struct {
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PeerCount int `json:"peerCount"`
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}
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func (p *EthereumApi) GetPeerCount(args *interface{}, reply *string) error {
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*reply = NewSuccessRes(GetPeerCountRes{PeerCount: p.pipe.PeerCount()})
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return nil
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}
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type GetListeningRes struct {
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IsListening bool `json:"isListening"`
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}
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func (p *EthereumApi) GetIsListening(args *interface{}, reply *string) error {
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*reply = NewSuccessRes(GetListeningRes{IsListening: p.pipe.IsListening()})
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return nil
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}
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type GetCoinbaseRes struct {
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Coinbase string `json:"coinbase"`
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}
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func (p *EthereumApi) GetCoinbase(args *interface{}, reply *string) error {
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*reply = NewSuccessRes(GetCoinbaseRes{Coinbase: p.pipe.CoinBase()})
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return nil
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}
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type GetMiningRes struct {
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IsMining bool `json:"isMining"`
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}
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func (p *EthereumApi) GetIsMining(args *interface{}, reply *string) error {
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*reply = NewSuccessRes(GetMiningRes{IsMining: p.pipe.IsMining()})
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return nil
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}
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func (p *EthereumApi) GetTxCountAt(args *GetTxCountArgs, reply *string) error {
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err := args.requirements()
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if err != nil {
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return err
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}
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state := p.pipe.TxCountAt(args.Address)
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*reply = NewSuccessRes(GetTxCountRes{Nonce: state})
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return nil
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}
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type GetBalanceArgs struct {
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Address string
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}
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func (a *GetBalanceArgs) requirements() error {
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if a.Address == "" {
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return NewErrorResponse("GetBalanceAt requires an 'address' value as argument")
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}
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return nil
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}
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type BalanceRes struct {
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Balance string `json:"balance"`
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Address string `json:"address"`
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}
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func (p *EthereumApi) GetBalanceAt(args *GetBalanceArgs, reply *string) error {
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err := args.requirements()
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if err != nil {
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return err
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}
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state := p.pipe.World().SafeGet(ethutil.Hex2Bytes(args.Address))
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*reply = NewSuccessRes(BalanceRes{Balance: state.Balance.String(), Address: args.Address})
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return nil
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}
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type TestRes struct {
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JsonResponse `json:"-"`
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Answer int `json:"answer"`
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}
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func (p *EthereumApi) Test(args *GetBlockArgs, reply *string) error {
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*reply = NewSuccessRes(TestRes{Answer: 15})
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return nil
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}
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