// New creates a new Ether APIs instance, connects with it to the Ethereum network
// via an embedded Geth instance and attaches an RPC in-process endpoint to it.
func New(datadir string, network geth.EthereumNetwork, address common.Address) (*EtherAPIs, error) {
// Create a Geth instance and boot it up
client, err := geth.New(datadir, network)
if err != nil {
return nil, err
}
if err := client.Start(); err != nil {
return nil, err
}
// Retrieve the underlying ethereum service and attach global RPC interface
var ethereum *eth.Ethereum
if err := client.Stack().Service(ðereum); err != nil {
return nil, err
}
api, err := client.Attach()
if err != nil {
return nil, err
}
// Assemble an interface around the consensus contract
contract, err := contract.New(ethereum.ChainDb(), ethereum.EventMux(), ethereum.BlockChain(), ethereum.Miner().PendingState)
if err != nil {
return nil, err
}
// Assemble and return the Ether APIs instance
return &EtherAPIs{
client: client,
ethereum: ethereum,
eventmux: client.Stack().EventMux(),
rpcapi: api,
contract: contract,
}, nil
}
// InsertPreState populates the given database with the genesis
// accounts defined by the test.
func (t *BlockTest) InsertPreState(ethereum *eth.Ethereum) (*state.StateDB, error) {
db := ethereum.ChainDb()
statedb := state.New(common.Hash{}, db)
for addrString, acct := range t.preAccounts {
addr, err := hex.DecodeString(addrString)
if err != nil {
return nil, err
}
code, err := hex.DecodeString(strings.TrimPrefix(acct.Code, "0x"))
if err != nil {
return nil, err
}
balance, ok := new(big.Int).SetString(acct.Balance, 0)
if !ok {
return nil, err
}
nonce, err := strconv.ParseUint(prepInt(16, acct.Nonce), 16, 64)
if err != nil {
return nil, err
}
if acct.PrivateKey != "" {
privkey, err := hex.DecodeString(strings.TrimPrefix(acct.PrivateKey, "0x"))
err = crypto.ImportBlockTestKey(privkey)
err = ethereum.AccountManager().TimedUnlock(common.BytesToAddress(addr), "", 999999*time.Second)
if err != nil {
return nil, err
}
}
obj := statedb.CreateAccount(common.HexToAddress(addrString))
obj.SetCode(code)
obj.SetBalance(balance)
obj.SetNonce(nonce)
for k, v := range acct.Storage {
statedb.SetState(common.HexToAddress(addrString), common.HexToHash(k), common.HexToHash(v))
}
}
// sync objects to trie
statedb.SyncObjects()
// sync trie to disk
statedb.Sync()
if !bytes.Equal(t.Genesis.Root().Bytes(), statedb.Root().Bytes()) {
return nil, fmt.Errorf("computed state root does not match genesis block %x %x", t.Genesis.Root().Bytes()[:4], statedb.Root().Bytes()[:4])
}
return statedb, nil
}