func blocksCatchUp() {
total := cold.Get().Headers().Len()
db := cold.Get().OutputDB()
for {
tag, err := db.Tag()
if err != nil {
log.Panicf("Error reading OutputDB tag: %s", err)
}
begin := int(tag) + 1
if begin >= total {
break
}
end, paral, load := swdlParam(begin, total)
dl := newSwdl(begin, end, paral, load)
dl.start()
}
log.Infoln("Block downloading done.")
}
func saveBlock(m btcmsg.Message, i int, verify bool) {
db := cold.Get().OutputDB()
bm, _ := m.(*btcmsg.Message_block)
for _, tx := range bm.Txs {
ctx := (*catma.Tx)(tx)
err := catma.VerifyTx(ctx, db, true, false, !verify)
if err != nil {
log.Panicf("Process tx %s error: %s", ctx.Hash(), err)
}
}
if err := db.Commit(uint32(i), false); err != nil {
log.Panicf("db commit error: %s", err)
}
}
func (sw *swdl) start() {
sw.wg.Add(1) // For doSaveBlocks
for i := 0; i < sw.paral; i++ {
go sw.doDownload()
}
go sw.doSaveBlock()
go sw.doSchedule()
sw.chin <- nil // Trigger downloading
sw.wg.Wait()
db := cold.Get().OutputDB()
if err := db.Commit(uint32(sw.end-1), true); err != nil {
log.Panicf("db commit error: %s", err)
}
log.Infof("Finished downloading from %d to %d", sw.begin, sw.end)
}
func moreHeaders() {
headers := cold.Get().Headers()
l := headers.GetLocator()
msg := btcmsg.NewGetHeadersMsg()
mg := msg.(*btcmsg.Message_getheaders)
mg.BlockLocators = l
mg.HashStop = new(klib.Hash256)
f := func(m btcmsg.Message) (bool, bool) {
_, ok := m.(*btcmsg.Message_headers)
return ok, true
}
mh := knet.ParalMsgForMsg(mg, f, 3)
if mh != nil {
h, _ := mh.(*btcmsg.Message_headers)
err := headers.Append(h.Headers)
if err != nil {
log.Infof("Error appending headers: %s", err)
}
}
}
func GetInvElem(h int) *InvElement {
headers := cold.Get().Headers()
header := headers.Get(h)
return &InvElement{InvTypeBlock, *(header.Hash())}
}
// Destroy blockchain subsystem
func Destroy() error {
return cold.Get().Destroy()
}
// Initialize blockchain subsystem
func Init() error {
return cold.Get().Init()
}
// Returns if we should stop catching up
func headerUpToDate() bool {
headers := cold.Get().Headers()
h := headers.Get(headers.Len() - 1)
return h.Time().Add(time.Hour * 2).After(time.Now())
}