github.com/matrixorigin/matrixone@v0.7.0/pkg/vm/engine/tae/logstore/driver/batchstoredriver/checker.go (about)

     1  // Copyright 2021 Matrix Origin
     2  //
     3  // Licensed under the Apache License, Version 2.0 (the "License");
     4  // you may not use this file except in compliance with the License.
     5  // You may obtain a copy of the License at
     6  //
     7  //      http://www.apache.org/licenses/LICENSE-2.0
     8  //
     9  // Unless required by applicable law or agreed to in writing, software
    10  // distributed under the License is distributed on an "AS IS" BASIS,
    11  // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
    12  // See the License for the specific language governing permissions and
    13  // limitations under the License.
    14  
    15  package batchstoredriver
    16  
    17  import (
    18  	"github.com/matrixorigin/matrixone/pkg/vm/engine/tae/common"
    19  )
    20  
    21  const (
    22  	DefaultRotateCheckerMaxSize = int(common.M) * 64
    23  )
    24  
    25  type MaxSizeRotateChecker struct {
    26  	MaxSize int
    27  }
    28  
    29  func NewMaxSizeRotateChecker(size int) *MaxSizeRotateChecker {
    30  	return &MaxSizeRotateChecker{
    31  		MaxSize: size,
    32  	}
    33  }
    34  
    35  func (c *MaxSizeRotateChecker) PrepareAppend(vfile VFile, delta int) (needRot bool, err error) {
    36  	if vfile == nil {
    37  		return false, nil
    38  	}
    39  	if vfile.SizeLocked() > c.MaxSize {
    40  		return true, nil
    41  	}
    42  	return false, nil
    43  }