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binary format for WAL

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This commit is contained in:
Anton Kaliaev
2017-10-09 23:10:58 +04:00
parent 31030c6514
commit 3115c23762
16 changed files with 451 additions and 143 deletions
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34
consensus/replay_file.go
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@ -4,6 +4,7 @@ import (
"bufio"
"errors"
"fmt"
"io"
"os"
"strconv"
"strings"
@ -53,12 +54,20 @@ func (cs *ConsensusState) ReplayFile(file string, console bool) error {
defer pb.fp.Close()
var nextN int // apply N msgs in a row
for pb.scanner.Scan() {
var msg *TimedWALMessage
for {
if nextN == 0 && console {
nextN = pb.replayConsoleLoop()
}
if err := pb.cs.readReplayMessage(pb.scanner.Bytes(), newStepCh); err != nil {
msg, err = pb.dec.Decode()
if err == io.EOF {
return nil
} else {
return err
}
if err := pb.cs.readReplayMessage(msg, newStepCh); err != nil {
return err
}
@ -76,9 +85,9 @@ func (cs *ConsensusState) ReplayFile(file string, console bool) error {
type playback struct {
cs *ConsensusState
fp *os.File
scanner *bufio.Scanner
count int // how many lines/msgs into the file are we
fp *os.File
dec *WALDecoder
count int // how many lines/msgs into the file are we
// replays can be reset to beginning
fileName string // so we can close/reopen the file
@ -91,7 +100,7 @@ func newPlayback(fileName string, fp *os.File, cs *ConsensusState, genState *sm.
fp: fp,
fileName: fileName,
genesisState: genState,
scanner: bufio.NewScanner(fp),
dec: NewWALDecoder(fp),
}
}
@ -111,13 +120,20 @@ func (pb *playback) replayReset(count int, newStepCh chan interface{}) error {
return err
}
pb.fp = fp
pb.scanner = bufio.NewScanner(fp)
pb.dec = NewWALDecoder(fp)
count = pb.count - count
fmt.Printf("Reseting from %d to %d\n", pb.count, count)
pb.count = 0
pb.cs = newCS
for i := 0; pb.scanner.Scan() && i < count; i++ {
if err := pb.cs.readReplayMessage(pb.scanner.Bytes(), newStepCh); err != nil {
var msg *TimedWALMessage
for i := 0; i < count; i++ {
msg, err = pb.dec.Decode()
if err == io.EOF {
return nil
} else {
return err
}
if err := pb.cs.readReplayMessage(msg, newStepCh); err != nil {
return err
}
pb.count += 1