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replay.go
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replay.go
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// Copyright 2021 Matrix Origin
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
package batchstoredriver
import (
"math"
"time"
"github.com/matrixorigin/matrixone/pkg/vm/engine/tae/common"
"github.com/matrixorigin/matrixone/pkg/vm/engine/tae/logstore/driver"
"github.com/matrixorigin/matrixone/pkg/vm/engine/tae/logstore/driver/entry"
)
// wal ckping
type replayer struct {
version int
pos int
applyEntry driver.ApplyHandle
//syncbase
addrs map[int]*common.ClosedIntervals
maxlsn uint64
minlsn uint64
readDuration time.Duration
applyDuration time.Duration
}
func newReplayer(h driver.ApplyHandle) *replayer {
return &replayer{
addrs: make(map[int]*common.ClosedIntervals),
applyEntry: h,
minlsn: math.MaxUint64,
}
}
func (r *replayer) updateaddrs(version int, lsn uint64) {
interval, ok := r.addrs[version]
if !ok {
interval = common.NewClosedIntervals()
r.addrs[version] = interval
}
interval.TryMerge(*common.NewClosedIntervalsByInt(lsn))
}
func (r *replayer) updateGroupLSN(lsn uint64) {
if lsn > r.maxlsn {
r.maxlsn = lsn
}
if lsn < r.minlsn {
r.minlsn = lsn
}
}
func (r *replayer) onReplayEntry(e *entry.Entry) error {
e.SetInfo()
info := e.Info
if info == nil {
return nil
}
r.updateaddrs(r.version, e.Lsn)
r.updateGroupLSN(e.Lsn)
return nil
}
func (r *replayer) replayHandler(vfile *vFile) error {
if vfile.version != r.version {
r.pos = 0
r.version = vfile.version
}
e := entry.NewEmptyEntry()
t0 := time.Now()
_, err := e.ReadAt(vfile.File, r.pos)
r.readDuration += time.Since(t0)
if err != nil {
return err
}
if err := r.onReplayEntry(e); err != nil {
return err
}
vfile.onReplay(r.pos, e.Lsn)
t0 = time.Now()
r.applyEntry(e)
r.applyDuration += time.Since(t0)
r.pos += e.GetSize()
e.Entry.Free()
return nil
}