func (bc *ChainManager) setLastState() error {
data, _ := bc.chainDb.Get([]byte("LastBlock"))
if len(data) != 0 {
block := bc.GetBlock(common.BytesToHash(data))
if block != nil {
bc.currentBlock = block
bc.lastBlockHash = block.Hash()
} else {
glog.Infof("LastBlock (%x) not found. Recovering...\n", data)
if bc.recover() {
glog.Infof("Recover successful")
} else {
glog.Fatalf("Recover failed. Please report")
}
}
} else {
bc.Reset()
}
bc.td = bc.currentBlock.Td
bc.currentGasLimit = CalcGasLimit(bc.currentBlock)
if glog.V(logger.Info) {
glog.Infof("Last block (#%v) %x TD=%v\n", bc.currentBlock.Number(), bc.currentBlock.Hash(), bc.td)
}
return nil
}
// sync databases every minute. If flushing fails we exit immediatly. The system
// may not continue under any circumstances.
func (s *Ethereum) syncDatabases() {
ticker := time.NewTicker(1 * time.Minute)
done:
for {
select {
case <-ticker.C:
// don't change the order of database flushes
if err := s.dappDb.Flush(); err != nil {
glog.Fatalf("fatal error: flush dappDb: %v (Restart your node. We are aware of this issue)\n", err)
}
if err := s.chainDb.Flush(); err != nil {
glog.Fatalf("fatal error: flush chainDb: %v (Restart your node. We are aware of this issue)\n", err)
}
case <-s.shutdownChan:
break done
}
}
s.chainDb.Close()
s.dappDb.Close()
close(s.databasesClosed)
}