path: root/rpc/packages.go

package rpc

import (
    // "bytes"
    "encoding/json"
    "math/big"
    "strings"

    // "errors"
    "github.com/ethereum/go-ethereum/ethutil"
    "github.com/ethereum/go-ethereum/xeth"
)

type EthereumApi struct {
    pipe *xeth.JSXEth
}

func (p *EthereumApi) GetBlock(args *GetBlockArgs, reply *interface{}) error {
    err := args.requirements()
    if err != nil {
        return err
    }

    // var block xeth.JSBlock
    if args.BlockNumber > 0 {
        // block := p.pipe.BlockByNumber(int32(args.BlockNumber))
        *reply = p.pipe.BlockByNumber(args.BlockNumber)
    } else {
        // block := p.pipe.BlockByHash(args.Hash)
        *reply = p.pipe.BlockByHash(args.Hash)
    }
    return nil
}

func (p *EthereumApi) Transact(args *NewTxArgs, reply *interface{}) error {
    err := args.requirements()
    if err != nil {
        return err
    }
    result, _ := p.pipe.Transact(p.pipe.Key().PrivateKey, args.Recipient, args.Value, args.Gas, args.GasPrice, args.Body)
    *reply = result
    return nil
}

func (p *EthereumApi) Create(args *NewTxArgs, reply *interface{}) error {
    err := args.requirementsContract()
    if err != nil {
        return err
    }

    result, _ := p.pipe.Transact(p.pipe.Key().PrivateKey, "", args.Value, args.Gas, args.GasPrice, args.Body)
    *reply = result
    return nil
}

func (p *EthereumApi) PushTx(args *PushTxArgs, reply *interface{}) error {
    err := args.requirementsPushTx()
    if err != nil {
        return err
    }
    result, _ := p.pipe.PushTx(args.Tx)
    *reply = result
    return nil
}

func (p *EthereumApi) GetKey(args interface{}, reply *interface{}) error {
    *reply = p.pipe.Key()
    return nil
}

func (p *EthereumApi) GetStorageAt(args *GetStorageArgs, reply *interface{}) error {
    err := args.requirements()
    if err != nil {
        return err
    }

    state := p.pipe.World().SafeGet(ethutil.Hex2Bytes(args.Address))

    var hx string
    if strings.Index(args.Key, "0x") == 0 {
        hx = string([]byte(args.Key)[2:])
    } else {
        // Convert the incoming string (which is a bigint) into hex
        i, _ := new(big.Int).SetString(args.Key, 10)
        hx = ethutil.Bytes2Hex(i.Bytes())
    }
    jsonlogger.Debugf("GetStorageAt(%s, %s)\n", args.Address, hx)
    value := state.Storage(ethutil.Hex2Bytes(hx))
    *reply = GetStorageAtRes{Address: args.Address, Key: args.Key, Value: value.Str()}
    return nil
}

func (p *EthereumApi) GetPeerCount(reply *interface{}) error {
    *reply = p.pipe.PeerCount()
    return nil
}

func (p *EthereumApi) GetIsListening(reply *interface{}) error {
    *reply = p.pipe.IsListening()
    // *reply = NewSuccessRes(GetListeningRes{IsListening: p.pipe.IsListening()})
    return nil
}

func (p *EthereumApi) GetCoinbase(reply *interface{}) error {
    *reply = p.pipe.CoinBase()
    // *reply = p.pipe.CoinBase()
    return nil
}

func (p *EthereumApi) GetIsMining(reply *interface{}) error {
    *reply = p.pipe.IsMining()
    return nil
}

func (p *EthereumApi) GetTxCountAt(args *GetTxCountArgs, reply *interface{}) error {
    err := args.requirements()
    if err != nil {
        return err
    }
    *reply = p.pipe.TxCountAt(args.Address)
    return nil
}

func (p *EthereumApi) GetBalanceAt(args *GetBalanceArgs, reply *interface{}) error {
    err := args.requirements()
    if err != nil {
        return err
    }
    state := p.pipe.World().SafeGet(ethutil.Hex2Bytes(args.Address))
    *reply = BalanceRes{Balance: state.Balance().String(), Address: args.Address}
    return nil
}

// type JsonArgs interface {
//  requirements() error
// }

// type BlockResponse struct {
//  JsonResponse
// }

type GetBlockArgs struct {
    BlockNumber int32
    Hash        string
}

func (obj *GetBlockArgs) UnmarshalJSON(b []byte) (err error) {
    argint, argstr := int32(0), ""
    if err = json.Unmarshal(b, &argint); err == nil {
        obj.BlockNumber = argint
        return
    }
    if err = json.Unmarshal(b, &argstr); err == nil {
        obj.Hash = argstr
        return
    }
    return NewErrorResponse("Could not determine JSON parameters")
}

func (obj *GetBlockArgs) requirements() error {
    if obj.BlockNumber == 0 && obj.Hash == "" {
        return NewErrorResponse("GetBlock requires either a block 'number' or a block 'hash' as argument")
    }
    return nil
}

type NewTxArgs struct {
    Sec       string `json:"sec"`
    Recipient string `json:"recipient"`
    Value     string `json:"value"`
    Gas       string `json:"gas"`
    GasPrice  string `json:"gasprice"`
    Init      string `json:"init"`
    Body      string `json:"body"`
}

// type TxResponse struct {
//  Hash string
// }

func (a *NewTxArgs) requirements() error {
    if a.Recipient == "" {
        return NewErrorResponse("Transact requires a 'recipient' address as argument")
    }
    if a.Value == "" {
        return NewErrorResponse("Transact requires a 'value' as argument")
    }
    if a.Gas == "" {
        return NewErrorResponse("Transact requires a 'gas' value as argument")
    }
    if a.GasPrice == "" {
        return NewErrorResponse("Transact requires a 'gasprice' value as argument")
    }
    return nil
}

func (a *NewTxArgs) requirementsContract() error {
    if a.Value == "" {
        return NewErrorResponse("Create requires a 'value' as argument")
    }
    if a.Gas == "" {
        return NewErrorResponse("Create requires a 'gas' value as argument")
    }
    if a.GasPrice == "" {
        return NewErrorResponse("Create requires a 'gasprice' value as argument")
    }
    if a.Body == "" {
        return NewErrorResponse("Create requires a 'body' value as argument")
    }
    return nil
}

type PushTxArgs struct {
    Tx string `json:"tx"`
}

func (a *PushTxArgs) requirementsPushTx() error {
    if a.Tx == "" {
        return NewErrorResponse("PushTx requires a 'tx' as argument")
    }
    return nil
}

type GetStorageArgs struct {
    Address string
    Key     string
}

func (a *GetStorageArgs) requirements() error {
    if a.Address == "" {
        return NewErrorResponse("GetStorageAt requires an 'address' value as argument")
    }
    if a.Key == "" {
        return NewErrorResponse("GetStorageAt requires an 'key' value as argument")
    }
    return nil
}

type GetStorageAtRes struct {
    Key     string `json:"key"`
    Value   string `json:"value"`
    Address string `json:"address"`
}

type GetTxCountArgs struct {
    Address string `json:"address"`
}

// type GetTxCountRes struct {
//  Nonce int `json:"nonce"`
// }

func (obj *GetTxCountArgs) UnmarshalJSON(b []byte) (err error) {
    arg0 := ""
    if err = json.Unmarshal(b, arg0); err == nil {
        obj.Address = arg0
        return
    }
    return NewErrorResponse("Could not determine JSON parameters")
}

func (a *GetTxCountArgs) requirements() error {
    if a.Address == "" {
        return NewErrorResponse("GetTxCountAt requires an 'address' value as argument")
    }
    return nil
}

// type GetPeerCountRes struct {
//  PeerCount int `json:"peerCount"`
// }

// type GetListeningRes struct {
//  IsListening bool `json:"isListening"`
// }

// type GetCoinbaseRes struct {
//  Coinbase string `json:"coinbase"`
// }

// type GetMiningRes struct {
//  IsMining bool `json:"isMining"`
// }

type GetBalanceArgs struct {
    Address string
}

func (obj *GetBalanceArgs) UnmarshalJSON(b []byte) (err error) {
    arg0 := ""
    if err = json.Unmarshal(b, &arg0); err == nil {
        obj.Address = arg0
        return
    }
    return NewErrorResponse("Could not determine JSON parameters")
}

func (a *GetBalanceArgs) requirements() error {
    if a.Address == "" {
        return NewErrorResponse("GetBalanceAt requires an 'address' value as argument")
    }
    return nil
}

type BalanceRes struct {
    Balance string `json:"balance"`
    Address string `json:"address"`
}

// type TestRes struct {
//  JsonResponse `json:"-"`
//  Answer       int `json:"answer"`
// }

// func (p *EthereumApi) Test(args *GetBlockArgs, reply *interface{}) error {
//  *reply = NewSuccessRes(TestRes{Answer: 15})
//  return nil
// }