path: root/ethpub/pub.go

package ethpub

import (
    "github.com/ethereum/eth-go/ethchain"
    "github.com/ethereum/eth-go/ethutil"
)

type PEthereum struct {
    stateManager *ethchain.StateManager
    blockChain   *ethchain.BlockChain
    txPool       *ethchain.TxPool
}

func NewPEthereum(sm *ethchain.StateManager, bc *ethchain.BlockChain, txp *ethchain.TxPool) *PEthereum {
    return &PEthereum{
        sm,
        bc,
        txp,
    }
}

func (lib *PEthereum) GetBlock(hexHash string) *PBlock {
    hash := ethutil.FromHex(hexHash)

    block := lib.blockChain.GetBlock(hash)

    var blockInfo *PBlock

    if block != nil {
        blockInfo = &PBlock{Number: int(block.BlockInfo().Number), Hash: ethutil.Hex(block.Hash())}
    } else {
        blockInfo = &PBlock{Number: -1, Hash: ""}
    }

    return blockInfo
}

func (lib *PEthereum) GetKey() *PKey {
    keyPair, err := ethchain.NewKeyPairFromSec(ethutil.Config.Db.GetKeys()[0].PrivateKey)
    if err != nil {
        return nil
    }

    return NewPKey(keyPair)
}

func (lib *PEthereum) GetStateObject(address string) *PStateObject {
    stateObject := lib.stateManager.ProcState().GetContract(ethutil.FromHex(address))
    if stateObject != nil {
        return NewPStateObject(stateObject)
    }

    // See GetStorage for explanation on "nil"
    return NewPStateObject(nil)
}

func (lib *PEthereum) Transact(key, recipient, valueStr, gasStr, gasPriceStr, dataStr string) (*PReceipt, error) {
    return lib.createTx(key, recipient, valueStr, gasStr, gasPriceStr, dataStr, "")
}

func (lib *PEthereum) Create(key, valueStr, gasStr, gasPriceStr, initStr, bodyStr string) (*PReceipt, error) {
    return lib.createTx(key, "", valueStr, gasStr, gasPriceStr, initStr, bodyStr)
}

func (lib *PEthereum) createTx(key, recipient, valueStr, gasStr, gasPriceStr, initStr, scriptStr string) (*PReceipt, error) {
    var hash []byte
    var contractCreation bool
    if len(recipient) == 0 {
        contractCreation = true
    } else {
        hash = ethutil.FromHex(recipient)
    }

    keyPair, err := ethchain.NewKeyPairFromSec([]byte(ethutil.FromHex(key)))
    if err != nil {
        return nil, err
    }

    value := ethutil.Big(valueStr)
    gas := ethutil.Big(gasStr)
    gasPrice := ethutil.Big(gasPriceStr)
    var tx *ethchain.Transaction
    // Compile and assemble the given data
    if contractCreation {
        initScript, err := ethutil.Compile(initStr)
        if err != nil {
            return nil, err
        }
        mainScript, err := ethutil.Compile(scriptStr)
        if err != nil {
            return nil, err
        }

        tx = ethchain.NewContractCreationTx(value, gas, gasPrice, mainScript, initScript)
    } else {
        // Just in case it was submitted as a 0x prefixed string
        if len(initStr) > 0 && initStr[0:2] == "0x" {
            initStr = initStr[2:len(initStr)]
        }
        tx = ethchain.NewTransactionMessage(hash, value, gas, gasPrice, ethutil.FromHex(initStr))
    }

    acc := lib.stateManager.GetAddrState(keyPair.Address())
    tx.Nonce = acc.Nonce
    tx.Sign(keyPair.PrivateKey)
    lib.txPool.QueueTransaction(tx)

    if contractCreation {
        ethutil.Config.Log.Infof("Contract addr %x", tx.CreationAddress())
    } else {
        ethutil.Config.Log.Infof("Tx hash %x", tx.Hash())
    }

    return NewPReciept(contractCreation, tx.CreationAddress(), tx.Hash(), keyPair.Address()), nil
}