go-ethereum/xeth/xeth.go

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// eXtended ETHereum
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package xeth
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import (
"bytes"
"encoding/json"
"fmt"
"math/big"
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"sync"
"time"
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"github.com/ethereum/go-ethereum/accounts"
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"github.com/ethereum/go-ethereum/common"
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"github.com/ethereum/go-ethereum/core"
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"github.com/ethereum/go-ethereum/core/state"
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"github.com/ethereum/go-ethereum/core/types"
"github.com/ethereum/go-ethereum/crypto"
"github.com/ethereum/go-ethereum/eth"
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"github.com/ethereum/go-ethereum/event/filter"
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"github.com/ethereum/go-ethereum/logger"
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"github.com/ethereum/go-ethereum/logger/glog"
"github.com/ethereum/go-ethereum/miner"
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"github.com/ethereum/go-ethereum/rlp"
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)
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var (
filterTickerTime = 5 * time.Minute
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defaultGasPrice = big.NewInt(10000000000000) //150000000000
defaultGas = big.NewInt(90000) //500000
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)
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func DefaultGas() *big.Int { return new(big.Int).Set(defaultGas) }
func DefaultGasPrice() *big.Int { return new(big.Int).Set(defaultGasPrice) }
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type XEth struct {
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backend *eth.Ethereum
frontend Frontend
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state *State
whisper *Whisper
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quit chan struct{}
filterManager *filter.FilterManager
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logMut sync.RWMutex
logs map[int]*logFilter
messagesMut sync.RWMutex
messages map[int]*whisperFilter
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// regmut sync.Mutex
// register map[string][]*interface{} // TODO improve return type
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agent *miner.RemoteAgent
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}
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// New creates an XEth that uses the given frontend.
// If a nil Frontend is provided, a default frontend which
// confirms all transactions will be used.
func New(eth *eth.Ethereum, frontend Frontend) *XEth {
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xeth := &XEth{
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backend: eth,
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frontend: frontend,
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whisper: NewWhisper(eth.Whisper()),
quit: make(chan struct{}),
filterManager: filter.NewFilterManager(eth.EventMux()),
logs: make(map[int]*logFilter),
messages: make(map[int]*whisperFilter),
agent: miner.NewRemoteAgent(),
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}
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eth.Miner().Register(xeth.agent)
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if frontend == nil {
xeth.frontend = dummyFrontend{}
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}
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xeth.state = NewState(xeth, xeth.backend.ChainManager().TransState())
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go xeth.start()
go xeth.filterManager.Start()
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return xeth
}
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func (self *XEth) start() {
timer := time.NewTicker(2 * time.Second)
done:
for {
select {
case <-timer.C:
self.logMut.Lock()
self.messagesMut.Lock()
for id, filter := range self.logs {
if time.Since(filter.timeout) > filterTickerTime {
self.filterManager.UninstallFilter(id)
delete(self.logs, id)
}
}
for id, filter := range self.messages {
if time.Since(filter.timeout) > filterTickerTime {
self.Whisper().Unwatch(id)
delete(self.messages, id)
}
}
self.messagesMut.Unlock()
self.logMut.Unlock()
case <-self.quit:
break done
}
}
}
func (self *XEth) stop() {
close(self.quit)
}
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func cAddress(a []string) []common.Address {
bslice := make([]common.Address, len(a))
for i, addr := range a {
bslice[i] = common.HexToAddress(addr)
}
return bslice
}
func cTopics(t [][]string) [][]common.Hash {
topics := make([][]common.Hash, len(t))
for i, iv := range t {
topics[i] = make([]common.Hash, len(iv))
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for j, jv := range iv {
topics[i][j] = common.HexToHash(jv)
}
}
return topics
}
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func (self *XEth) RemoteMining() *miner.RemoteAgent { return self.agent }
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func (self *XEth) AtStateNum(num int64) *XEth {
var st *state.StateDB
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switch num {
case -2:
st = self.backend.Miner().PendingState().Copy()
default:
if block := self.getBlockByHeight(num); block != nil {
st = state.New(block.Root(), self.backend.StateDb())
} else {
st = state.New(self.backend.ChainManager().GetBlockByNumber(0).Root(), self.backend.StateDb())
}
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}
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return self.WithState(st)
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}
func (self *XEth) WithState(statedb *state.StateDB) *XEth {
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xeth := &XEth{
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backend: self.backend,
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}
xeth.state = NewState(xeth, statedb)
return xeth
}
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func (self *XEth) State() *State { return self.state }
func (self *XEth) Whisper() *Whisper { return self.whisper }
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func (self *XEth) getBlockByHeight(height int64) *types.Block {
var num uint64
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switch height {
case -2:
return self.backend.Miner().PendingBlock()
case -1:
return self.CurrentBlock()
default:
if height < 0 {
return nil
}
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num = uint64(height)
}
return self.backend.ChainManager().GetBlockByNumber(num)
}
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func (self *XEth) BlockByHash(strHash string) *Block {
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hash := common.HexToHash(strHash)
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block := self.backend.ChainManager().GetBlock(hash)
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return NewBlock(block)
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}
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func (self *XEth) EthBlockByHash(strHash string) *types.Block {
hash := common.HexToHash(strHash)
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block := self.backend.ChainManager().GetBlock(hash)
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return block
}
func (self *XEth) EthTransactionByHash(hash string) (tx *types.Transaction, blhash common.Hash, blnum *big.Int, txi uint64) {
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data, _ := self.backend.ExtraDb().Get(common.FromHex(hash))
if len(data) != 0 {
tx = types.NewTransactionFromBytes(data)
}
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// meta
var txExtra struct {
BlockHash common.Hash
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BlockIndex uint64
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Index uint64
}
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v, _ := self.backend.ExtraDb().Get(append(common.FromHex(hash), 0x0001))
r := bytes.NewReader(v)
err := rlp.Decode(r, &txExtra)
if err == nil {
blhash = txExtra.BlockHash
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blnum = big.NewInt(int64(txExtra.BlockIndex))
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txi = txExtra.Index
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} else {
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glog.V(logger.Error).Infoln(err)
}
return
}
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func (self *XEth) BlockByNumber(num int64) *Block {
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return NewBlock(self.getBlockByHeight(num))
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}
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func (self *XEth) EthBlockByNumber(num int64) *types.Block {
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return self.getBlockByHeight(num)
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}
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func (self *XEth) CurrentBlock() *types.Block {
return self.backend.ChainManager().CurrentBlock()
}
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func (self *XEth) Block(v interface{}) *Block {
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if n, ok := v.(int32); ok {
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return self.BlockByNumber(int64(n))
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} else if str, ok := v.(string); ok {
return self.BlockByHash(str)
} else if f, ok := v.(float64); ok { // Don't ask ...
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return self.BlockByNumber(int64(f))
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}
return nil
}
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func (self *XEth) Accounts() []string {
// TODO: check err?
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accounts, _ := self.backend.AccountManager().Accounts()
accountAddresses := make([]string, len(accounts))
for i, ac := range accounts {
accountAddresses[i] = common.ToHex(ac.Address)
}
return accountAddresses
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}
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func (self *XEth) DbPut(key, val []byte) bool {
self.backend.ExtraDb().Put(key, val)
return true
}
func (self *XEth) DbGet(key []byte) ([]byte, error) {
val, err := self.backend.ExtraDb().Get(key)
return val, err
}
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func (self *XEth) PeerCount() int {
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return self.backend.PeerCount()
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}
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func (self *XEth) IsMining() bool {
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return self.backend.IsMining()
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}
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func (self *XEth) EthVersion() string {
return fmt.Sprintf("%d", self.backend.EthVersion())
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}
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func (self *XEth) NetworkVersion() string {
return fmt.Sprintf("%d", self.backend.NetVersion())
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}
func (self *XEth) WhisperVersion() string {
return fmt.Sprintf("%d", self.backend.ShhVersion())
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}
func (self *XEth) ClientVersion() string {
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return self.backend.ClientVersion()
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}
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func (self *XEth) SetMining(shouldmine bool) bool {
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ismining := self.backend.IsMining()
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if shouldmine && !ismining {
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err := self.backend.StartMining()
return err == nil
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}
if ismining && !shouldmine {
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self.backend.StopMining()
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}
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return self.backend.IsMining()
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}
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func (self *XEth) IsListening() bool {
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return self.backend.IsListening()
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}
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func (self *XEth) Coinbase() string {
eb, _ := self.backend.Etherbase()
return eb.Hex()
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}
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func (self *XEth) NumberToHuman(balance string) string {
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b := common.Big(balance)
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return common.CurrencyToString(b)
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}
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func (self *XEth) StorageAt(addr, storageAddr string) string {
return common.ToHex(self.State().state.GetState(common.HexToAddress(addr), common.HexToHash(storageAddr)))
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}
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func (self *XEth) BalanceAt(addr string) string {
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return common.ToHex(self.State().state.GetBalance(common.HexToAddress(addr)).Bytes())
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}
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func (self *XEth) TxCountAt(address string) int {
return int(self.State().state.GetNonce(common.HexToAddress(address)))
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}
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func (self *XEth) CodeAt(address string) string {
return common.ToHex(self.State().state.GetCode(common.HexToAddress(address)))
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}
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func (self *XEth) CodeAtBytes(address string) []byte {
return self.State().SafeGet(address).Code()
}
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func (self *XEth) IsContract(address string) bool {
return len(self.State().SafeGet(address).Code()) > 0
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}
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func (self *XEth) SecretToAddress(key string) string {
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pair, err := crypto.NewKeyPairFromSec(common.FromHex(key))
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if err != nil {
return ""
}
return common.ToHex(pair.Address())
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}
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func (self *XEth) RegisterFilter(earliest, latest int64, skip, max int, address []string, topics [][]string) int {
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var id int
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filter := core.NewFilter(self.backend)
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filter.SetEarliestBlock(earliest)
filter.SetLatestBlock(latest)
filter.SetSkip(skip)
filter.SetMax(max)
filter.SetAddress(cAddress(address))
filter.SetTopics(cTopics(topics))
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filter.LogsCallback = func(logs state.Logs) {
self.logMut.Lock()
defer self.logMut.Unlock()
self.logs[id].add(logs...)
}
id = self.filterManager.InstallFilter(filter)
self.logs[id] = &logFilter{timeout: time.Now()}
return id
}
func (self *XEth) UninstallFilter(id int) bool {
if _, ok := self.logs[id]; ok {
delete(self.logs, id)
self.filterManager.UninstallFilter(id)
return true
}
return false
}
func (self *XEth) NewFilterString(word string) int {
var id int
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filter := core.NewFilter(self.backend)
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switch word {
case "pending":
filter.PendingCallback = func(tx *types.Transaction) {
self.logMut.Lock()
defer self.logMut.Unlock()
self.logs[id].add(&state.Log{})
}
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case "latest":
filter.BlockCallback = func(block *types.Block, logs state.Logs) {
self.logMut.Lock()
defer self.logMut.Unlock()
for _, log := range logs {
self.logs[id].add(log)
}
self.logs[id].add(&state.Log{})
}
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}
id = self.filterManager.InstallFilter(filter)
self.logs[id] = &logFilter{timeout: time.Now()}
return id
}
func (self *XEth) FilterChanged(id int) state.Logs {
self.logMut.Lock()
defer self.logMut.Unlock()
if self.logs[id] != nil {
return self.logs[id].get()
}
return nil
}
func (self *XEth) Logs(id int) state.Logs {
self.logMut.Lock()
defer self.logMut.Unlock()
filter := self.filterManager.GetFilter(id)
if filter != nil {
return filter.Find()
}
return nil
}
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func (self *XEth) AllLogs(earliest, latest int64, skip, max int, address []string, topics [][]string) state.Logs {
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filter := core.NewFilter(self.backend)
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filter.SetEarliestBlock(earliest)
filter.SetLatestBlock(latest)
filter.SetSkip(skip)
filter.SetMax(max)
filter.SetAddress(cAddress(address))
filter.SetTopics(cTopics(topics))
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return filter.Find()
}
func (p *XEth) NewWhisperFilter(opts *Options) int {
var id int
opts.Fn = func(msg WhisperMessage) {
p.messagesMut.Lock()
defer p.messagesMut.Unlock()
p.messages[id].add(msg) // = append(p.messages[id], msg)
}
id = p.Whisper().Watch(opts)
p.messages[id] = &whisperFilter{timeout: time.Now()}
return id
}
func (p *XEth) UninstallWhisperFilter(id int) bool {
if _, ok := p.messages[id]; ok {
delete(p.messages, id)
return true
}
return false
}
func (self *XEth) MessagesChanged(id int) []WhisperMessage {
self.messagesMut.Lock()
defer self.messagesMut.Unlock()
if self.messages[id] != nil {
return self.messages[id].get()
}
return nil
}
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// func (self *XEth) Register(args string) bool {
// self.regmut.Lock()
// defer self.regmut.Unlock()
// if _, ok := self.register[args]; ok {
// self.register[args] = nil // register with empty
// }
// return true
// }
// func (self *XEth) Unregister(args string) bool {
// self.regmut.Lock()
// defer self.regmut.Unlock()
// if _, ok := self.register[args]; ok {
// delete(self.register, args)
// return true
// }
// return false
// }
// // TODO improve return type
// func (self *XEth) PullWatchTx(args string) []*interface{} {
// self.regmut.Lock()
// defer self.regmut.Unlock()
// txs := self.register[args]
// self.register[args] = nil
// return txs
// }
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type KeyVal struct {
Key string `json:"key"`
Value string `json:"value"`
}
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func (self *XEth) EachStorage(addr string) string {
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var values []KeyVal
object := self.State().SafeGet(addr)
it := object.Trie().Iterator()
for it.Next() {
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values = append(values, KeyVal{common.ToHex(object.Trie().GetKey(it.Key)), common.ToHex(it.Value)})
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}
valuesJson, err := json.Marshal(values)
if err != nil {
return ""
}
return string(valuesJson)
}
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func (self *XEth) ToAscii(str string) string {
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padded := common.RightPadBytes([]byte(str), 32)
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return "0x" + common.ToHex(padded)
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}
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func (self *XEth) FromAscii(str string) string {
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if common.IsHex(str) {
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str = str[2:]
}
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return string(bytes.Trim(common.FromHex(str), "\x00"))
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}
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func (self *XEth) FromNumber(str string) string {
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if common.IsHex(str) {
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str = str[2:]
}
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return common.BigD(common.FromHex(str)).String()
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}
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func (self *XEth) PushTx(encodedTx string) (string, error) {
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tx := types.NewTransactionFromBytes(common.FromHex(encodedTx))
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err := self.backend.TxPool().Add(tx)
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if err != nil {
return "", err
}
if tx.To() == nil {
addr := core.AddressFromMessage(tx)
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return addr.Hex(), nil
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}
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return tx.Hash().Hex(), nil
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}
func (self *XEth) Call(fromStr, toStr, valueStr, gasStr, gasPriceStr, dataStr string) (string, error) {
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statedb := self.State().State() //self.eth.ChainManager().TransState()
var from *state.StateObject
if len(fromStr) == 0 {
accounts, err := self.backend.AccountManager().Accounts()
if err != nil || len(accounts) == 0 {
from = statedb.GetOrNewStateObject(common.Address{})
} else {
from = statedb.GetOrNewStateObject(common.BytesToAddress(accounts[0].Address))
}
} else {
from = statedb.GetOrNewStateObject(common.HexToAddress(fromStr))
}
msg := callmsg{
from: from,
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to: common.HexToAddress(toStr),
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gas: common.Big(gasStr),
gasPrice: common.Big(gasPriceStr),
value: common.Big(valueStr),
data: common.FromHex(dataStr),
}
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if msg.gas.Cmp(big.NewInt(0)) == 0 {
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msg.gas = DefaultGas()
}
if msg.gasPrice.Cmp(big.NewInt(0)) == 0 {
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msg.gasPrice = DefaultGasPrice()
}
block := self.CurrentBlock()
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vmenv := core.NewEnv(statedb, self.backend.ChainManager(), msg, block)
res, err := vmenv.Call(msg.from, msg.to, msg.data, msg.gas, msg.gasPrice, msg.value)
return common.ToHex(res), err
}
func (self *XEth) ConfirmTransaction(tx string) bool {
return self.frontend.ConfirmTransaction(tx)
}
func (self *XEth) Transact(fromStr, toStr, valueStr, gasStr, gasPriceStr, codeStr string) (string, error) {
var (
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from = common.HexToAddress(fromStr)
to = common.HexToAddress(toStr)
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value = common.NewValue(valueStr)
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gas = common.Big(gasStr)
price = common.Big(gasPriceStr)
data []byte
contractCreation bool
)
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// TODO if no_private_key then
//if _, exists := p.register[args.From]; exists {
// p.register[args.From] = append(p.register[args.From], args)
//} else {
/*
account := accounts.Get(common.FromHex(args.From))
if account != nil {
if account.Unlocked() {
if !unlockAccount(account) {
return
}
}
result, _ := account.Transact(common.FromHex(args.To), common.FromHex(args.Value), common.FromHex(args.Gas), common.FromHex(args.GasPrice), common.FromHex(args.Data))
if len(result) > 0 {
*reply = common.ToHex(result)
}
} else if _, exists := p.register[args.From]; exists {
p.register[ags.From] = append(p.register[args.From], args)
}
*/
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// TODO: align default values to have the same type, e.g. not depend on
// common.Value conversions later on
if gas.Cmp(big.NewInt(0)) == 0 {
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gas = DefaultGas()
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}
if price.Cmp(big.NewInt(0)) == 0 {
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price = DefaultGasPrice()
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}
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data = common.FromHex(codeStr)
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if len(toStr) == 0 {
contractCreation = true
}
var tx *types.Transaction
if contractCreation {
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tx = types.NewContractCreationTx(value.BigInt(), gas, price, data)
} else {
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tx = types.NewTransactionMessage(to, value.BigInt(), gas, price, data)
}
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state := self.backend.ChainManager().TxState()
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nonce := state.NewNonce(from)
tx.SetNonce(nonce)
if err := self.sign(tx, from, false); err != nil {
return "", err
}
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if err := self.backend.TxPool().Add(tx); err != nil {
return "", err
}
if contractCreation {
addr := core.AddressFromMessage(tx)
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glog.V(logger.Info).Infof("Contract addr %x\n", addr)
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return core.AddressFromMessage(tx).Hex(), nil
}
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return tx.Hash().Hex(), nil
}
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func (self *XEth) sign(tx *types.Transaction, from common.Address, didUnlock bool) error {
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sig, err := self.backend.AccountManager().Sign(accounts.Account{Address: from.Bytes()}, tx.Hash().Bytes())
if err == accounts.ErrLocked {
if didUnlock {
return fmt.Errorf("sender account still locked after successful unlock")
}
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if !self.frontend.UnlockAccount(from.Bytes()) {
return fmt.Errorf("could not unlock sender account")
}
// retry signing, the account should now be unlocked.
return self.sign(tx, from, true)
} else if err != nil {
return err
}
tx.SetSignatureValues(sig)
return nil
}
// callmsg is the message type used for call transations.
type callmsg struct {
from *state.StateObject
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to common.Address
gas, gasPrice *big.Int
value *big.Int
data []byte
}
// accessor boilerplate to implement core.Message
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func (m callmsg) From() (common.Address, error) { return m.from.Address(), nil }
func (m callmsg) Nonce() uint64 { return m.from.Nonce() }
func (m callmsg) To() *common.Address { return &m.to }
func (m callmsg) GasPrice() *big.Int { return m.gasPrice }
func (m callmsg) Gas() *big.Int { return m.gas }
func (m callmsg) Value() *big.Int { return m.value }
func (m callmsg) Data() []byte { return m.data }
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type whisperFilter struct {
messages []WhisperMessage
timeout time.Time
id int
}
func (w *whisperFilter) add(msgs ...WhisperMessage) {
w.messages = append(w.messages, msgs...)
}
func (w *whisperFilter) get() []WhisperMessage {
w.timeout = time.Now()
tmp := w.messages
w.messages = nil
return tmp
}
type logFilter struct {
logs state.Logs
timeout time.Time
id int
}
func (l *logFilter) add(logs ...*state.Log) {
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l.logs = append(l.logs, logs...)
}
func (l *logFilter) get() state.Logs {
l.timeout = time.Now()
tmp := l.logs
l.logs = nil
return tmp
}