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append.go
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append.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 logservicedriver
import (
"time"
"github.com/matrixorigin/matrixone/pkg/common/moerr"
"github.com/matrixorigin/matrixone/pkg/logutil"
"github.com/matrixorigin/matrixone/pkg/vm/engine/tae/logstore/driver/entry"
)
var ErrTooMuchPenddings = moerr.NewInternalErrorNoCtx("too much penddings")
func (d *LogServiceDriver) Append(e *entry.Entry) error {
d.driverLsnMu.Lock()
e.Lsn = d.allocateDriverLsn()
_, err := d.preAppendLoop.Enqueue(e)
if err != nil {
panic(err)
}
d.driverLsnMu.Unlock()
return nil
}
func (d *LogServiceDriver) getAppender() *driverAppender {
if int(d.appendable.entry.payloadSize) > d.config.RecordSize {
d.appendAppender()
}
return d.appendable
}
func (d *LogServiceDriver) appendAppender() {
d.appendtimes++
d.onAppendQueue(d.appendable)
d.appendedQueue <- d.appendable
d.appendable = newDriverAppender()
}
func (d *LogServiceDriver) onPreAppend(items ...any) {
for _, item := range items {
e := item.(*entry.Entry)
appender := d.getAppender()
appender.appendEntry(e)
}
d.appendAppender()
}
func (d *LogServiceDriver) onAppendQueue(appender *driverAppender) {
appender.client, appender.appendlsn = d.getClient()
appender.entry.SetAppended(d.getSynced())
appender.contextDuration = d.config.NewClientDuration
appender.wg.Add(1)
d.appendPool.Submit(func() {
appender.append(d.config.RetryTimeout, d.config.ClientAppendDuration)
})
}
func (d *LogServiceDriver) getClient() (client *clientWithRecord, lsn uint64) {
lsn, err := d.retryAllocateAppendLsnWithTimeout(uint64(d.config.ClientMaxCount), time.Second)
if err != nil {
panic(err)
}
client, err = d.clientPool.Get()
if err != nil {
logutil.Infof("LogService Driver: retry append err is %v", err)
err = RetryWithTimeout(d.config.RetryTimeout, func() (shouldReturn bool) {
client, err = d.clientPool.Get()
return err == nil
})
if err != nil {
panic(err)
}
}
return
}
func (d *LogServiceDriver) onAppendedQueue(items []any, q chan any) {
appenders := make([]*driverAppender, 0)
for _, item := range items {
appender := item.(*driverAppender)
appender.waitDone()
d.clientPool.Put(appender.client)
appender.freeEntries()
appenders = append(appenders, appender)
}
q <- appenders
}
func (d *LogServiceDriver) onPostAppendQueue(items []any, _ chan any) {
appended := make([]uint64, 0)
for _, v := range items {
batch := v.([]*driverAppender)
for _, appender := range batch {
d.logAppend(appender)
appended = append(appended, appender.appendlsn)
}
}
d.onAppend(appended)
}