// This isusually the most time consuming process when applying a new block
func (ch *Chain) commitTxs(bl *btc.Block, changes *BlockChanges) (e error) {
sumblockin := btc.GetBlockReward(changes.Height)
var txoutsum, txinsum, sumblockout uint64
if int(changes.Height)+UnwindBufferMaxHistory >= int(changes.LastKnownHeight) {
changes.UndoData = make(map[[32]byte]*QdbRec)
}
// Add each tx outs from the current block to the temporary pool
blUnsp := make(map[[32]byte][]*btc.TxOut, 4*len(bl.Txs))
for i := range bl.Txs {
outs := make([]*btc.TxOut, len(bl.Txs[i].TxOut))
copy(outs, bl.Txs[i].TxOut)
blUnsp[bl.Txs[i].Hash.Hash] = outs
}
// create a channnel to receive results from VerifyScript threads:
done := make(chan bool, sys.UseThreads)
for i := range bl.Txs {
txoutsum, txinsum = 0, 0
// Check each tx for a valid input, except from the first one
if i > 0 {
tx_trusted := bl.Trusted
if !tx_trusted && TrustedTxChecker != nil && TrustedTxChecker(bl.Txs[i].Hash) {
tx_trusted = true
}
scripts_ok := true
for j := 0; j < sys.UseThreads; j++ {
done <- true
}
for j := 0; j < len(bl.Txs[i].TxIn); /*&& e==nil*/ j++ {
inp := &bl.Txs[i].TxIn[j].Input
spendrec, waspent := changes.DeledTxs[inp.Hash]
if waspent && spendrec[inp.Vout] {
println("txin", inp.String(), "already spent in this block")
e = errors.New("Input spent more then once in same block")
break
}
tout := ch.PickUnspent(inp)
if tout == nil {
t, ok := blUnsp[inp.Hash]
if !ok {
e = errors.New("Unknown input TxID: " + btc.NewUint256(inp.Hash[:]).String())
break
}
if inp.Vout >= uint32(len(t)) {
println("Vout too big", len(t), inp.String())
e = errors.New("Vout too big")
break
}
if t[inp.Vout] == nil {
println("Vout already spent", inp.String())
e = errors.New("Vout already spent")
break
}
if t[inp.Vout].WasCoinbase {
e = errors.New("Cannot spend block's own coinbase in TxID: " + btc.NewUint256(inp.Hash[:]).String())
break
}
tout = t[inp.Vout]
t[inp.Vout] = nil // and now mark it as spent:
} else {
if tout.WasCoinbase && changes.Height-tout.BlockHeight < COINBASE_MATURITY {
e = errors.New("Trying to spend prematured coinbase: " + btc.NewUint256(inp.Hash[:]).String())
break
}
// it is confirmed already so delete it later
if !waspent {
spendrec = make([]bool, tout.VoutCount)
changes.DeledTxs[inp.Hash] = spendrec
}
spendrec[inp.Vout] = true
if changes.UndoData != nil {
var urec *QdbRec
urec = changes.UndoData[inp.Hash]
if urec == nil {
urec = new(QdbRec)
urec.TxID = inp.Hash
urec.Coinbase = tout.WasCoinbase
urec.InBlock = tout.BlockHeight
urec.Outs = make([]*QdbTxOut, tout.VoutCount)
changes.UndoData[inp.Hash] = urec
}
tmp := new(QdbTxOut)
tmp.Value = tout.Value
tmp.PKScr = make([]byte, len(tout.Pk_script))
copy(tmp.PKScr, tout.Pk_script)
urec.Outs[inp.Vout] = tmp
}
}
if !(<-done) {
println("VerifyScript error 1")
scripts_ok = false
break
}
if tx_trusted {
done <- true
} else {
go func(sig []byte, prv []byte, i int, tx *btc.Tx) {
done <- script.VerifyTxScript(sig, prv, i, tx, bl.VerifyFlags)
}(bl.Txs[i].TxIn[j].ScriptSig, tout.Pk_script, j, bl.Txs[i])
}
txinsum += tout.Value
}
if scripts_ok {
scripts_ok = <-done
}
for j := 1; j < sys.UseThreads; j++ {
if !(<-done) {
println("VerifyScript error 2")
scripts_ok = false
}
}
if len(done) != 0 {
panic("ASSERT: The channel should be empty gere")
}
if !scripts_ok {
return errors.New("VerifyScripts failed")
}
} else {
// For coinbase tx we need to check (like satoshi) whether the script size is between 2 and 100 bytes
// (Previously we made sure in CheckBlock() that this was a coinbase type tx)
if len(bl.Txs[0].TxIn[0].ScriptSig) < 2 || len(bl.Txs[0].TxIn[0].ScriptSig) > 100 {
return errors.New(fmt.Sprint("Coinbase script has a wrong length", len(bl.Txs[0].TxIn[0].ScriptSig)))
}
}
sumblockin += txinsum
for j := range bl.Txs[i].TxOut {
txoutsum += bl.Txs[i].TxOut[j].Value
}
sumblockout += txoutsum
if e != nil {
return // If any input fails, do not continue
}
if i > 0 && txoutsum > txinsum {
return errors.New(fmt.Sprintf("More spent (%.8f) than at the input (%.8f) in TX %s",
float64(txoutsum)/1e8, float64(txinsum)/1e8, bl.Txs[i].Hash.String()))
}
}
if sumblockin < sumblockout {
return errors.New(fmt.Sprintf("Out:%d > In:%d", sumblockout, sumblockin))
}
var rec *QdbRec
for k, v := range blUnsp {
for i := range v {
if v[i] != nil {
if rec == nil {
rec = new(QdbRec)
rec.TxID = k
rec.Coinbase = v[i].WasCoinbase
rec.InBlock = changes.Height
rec.Outs = make([]*QdbTxOut, len(v))
}
rec.Outs[i] = &QdbTxOut{Value: v[i].Value, PKScr: v[i].Pk_script}
}
}
if rec != nil {
changes.AddList = append(changes.AddList, rec)
rec = nil
}
}
return nil
}
func p_miners(w http.ResponseWriter, r *http.Request) {
if !ipchecker(r) {
return
}
common.ReloadMiners()
m := make(map[string]omv, 20)
var om omv
cnt := 0
common.Last.Mutex.Lock()
end := common.Last.Block
common.Last.Mutex.Unlock()
var lastts int64
var diff float64
var totbts uint64
var totfees uint64
current_mid := -1
now := time.Now().Unix()
common.LockCfg()
minerid := common.CFG.Beeps.MinerID
common.UnlockCfg()
next_diff_change := 2016 - end.Height%2016
block_versions := make(map[uint32]uint)
// bip100
bip100_voting := make(map[string]uint)
//var bip100, bip100v uint64
bip100x := regexp.MustCompile("/BV{0,1}[0-9]+[M]{0,1}/")
//bip100rx := regexp.MustCompile("/B[0-9]+[M]{0,1}/")
for ; end != nil; cnt++ {
if now-int64(end.Timestamp()) > int64(common.CFG.MiningStatHours)*3600 {
break
}
lastts = int64(end.Timestamp())
bl, _, e := common.BlockChain.Blocks.BlockGet(end.BlockHash)
if e != nil {
return
}
block, e := btc.NewBlock(bl)
cbasetx, _ := btc.NewTx(bl[block.TxOffset:])
block_versions[binary.LittleEndian.Uint32(bl[0:4])]++
diff += btc.GetDifficulty(end.Bits())
miner, mid := common.TxMiner(cbasetx)
if mid == -1 {
miner = "<i>" + miner + "</i>"
}
om = m[miner]
om.cnt++
om.bts += uint64(len(bl))
om.mid = mid
// Blocks reward
var rew uint64
for o := range cbasetx.TxOut {
rew += cbasetx.TxOut[o].Value
}
om.fees += rew - btc.GetBlockReward(end.Height)
// bip-100
res := bip100x.Find(cbasetx.TxIn[0].ScriptSig)
if res != nil {
bip100_voting[string(res)]++
}
m[miner] = om
if mid != -1 && current_mid == -1 && minerid == string(common.MinerIds[mid].Tag) {
current_mid = mid
}
totbts += uint64(len(bl))
end = end.Parent
}
if cnt == 0 {
write_html_head(w, r)
w.Write([]byte(fmt.Sprint("No blocks in last ", common.CFG.MiningStatHours, " hours")))
write_html_tail(w)
return
}
srt := make(onemiernstat, len(m))
i := 0
for k, v := range m {
srt[i].name = k
srt[i].omv = v
i++
}
sort.Sort(srt)
mnrs := load_template("miners.html")
onerow := load_template("miners_row.html")
diff /= float64(cnt)
bph := float64(cnt) / float64(common.CFG.MiningStatHours)
hrate := bph / 6 * diff * 7158278.826667
mnrs = strings.Replace(mnrs, "{MINING_HOURS}", fmt.Sprint(common.CFG.MiningStatHours), 1)
mnrs = strings.Replace(mnrs, "{BLOCKS_COUNT}", fmt.Sprint(cnt), 1)
mnrs = strings.Replace(mnrs, "{FIRST_BLOCK_TIME}", time.Unix(lastts, 0).Format("2006-01-02 15:04:05"), 1)
mnrs = strings.Replace(mnrs, "{AVG_BLOCKS_PER_HOUR}", fmt.Sprintf("%.2f", bph), 1)
mnrs = strings.Replace(mnrs, "{AVG_DIFFICULTY}", common.NumberToString(diff), 1)
mnrs = strings.Replace(mnrs, "{AVG_HASHDATE}", common.HashrateToString(hrate), 1)
mnrs = strings.Replace(mnrs, "{AVG_BLOCKSIZE}", fmt.Sprintf("%.1fKB", float64(totbts)/float64(cnt)/1000), 1)
mnrs = strings.Replace(mnrs, "{DIFF_CHANGE_IN}", fmt.Sprint(next_diff_change), 1)
mnrs = strings.Replace(mnrs, "{MINER_MON_IDX}", fmt.Sprint(current_mid), 1)
for i := range srt {
s := onerow
s = strings.Replace(s, "{MINER_NAME}", srt[i].name, 1)
s = strings.Replace(s, "{BLOCK_COUNT}", fmt.Sprint(srt[i].cnt), 1)
s = strings.Replace(s, "{TOTAL_PERCENT}", fmt.Sprintf("%.0f", 100*float64(srt[i].cnt)/float64(cnt)), 1)
s = strings.Replace(s, "{MINER_HASHRATE}", common.HashrateToString(hrate*float64(srt[i].cnt)/float64(cnt)), 1)
s = strings.Replace(s, "{AVG_BLOCK_SIZE}", fmt.Sprintf("%.1fKB", float64(srt[i].bts)/float64(srt[i].cnt)/1000), 1)
s = strings.Replace(s, "{MINER_ID}", fmt.Sprint(srt[i].mid), -1)
s = strings.Replace(s, "<!--TOTAL_FEES-->", btc.UintToBtc(srt[i].fees), -1)
s = strings.Replace(s, "<!--FEE_PER_BYTE-->", fmt.Sprint(srt[i].fees/srt[i].bts), -1)
mnrs = templ_add(mnrs, "<!--MINER_ROW-->", s)
totfees += srt[i].fees
}
mnrs = strings.Replace(mnrs, "<!--TOTAL_MINING_FEES-->", btc.UintToBtc(totfees), 1)
mnrs = strings.Replace(mnrs, "<!--AVERAGE_FEE_PER_BYTE-->", fmt.Sprint(totfees/totbts), 1)
var bv string
for k, v := range block_versions {
if bv != "" {
bv += " + "
}
bv += fmt.Sprintf("%dx%d", v, k)
}
mnrs = strings.Replace(mnrs, "<!--BLOCK_VERSIONS-->", bv, 1)
// bip100
bv = ""
for k, v := range bip100_voting {
if bv != "" {
bv += " + "
}
bv += fmt.Sprintf("%sx%d", k, v)
}
mnrs = strings.Replace(mnrs, "<!--BLOCKSIZE_VOTES-->", bv, 1)
write_html_head(w, r)
w.Write([]byte(mnrs))
write_html_tail(w)
}