github.com/matrixorigin/matrixone@v1.2.0/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 "github.com/matrixorigin/matrixone/pkg/common/mpool"
    18  
    19  const (
    20  	DefaultRotateCheckerMaxSize = int(mpool.MB) * 64
    21  )
    22  
    23  type MaxSizeRotateChecker struct {
    24  	MaxSize int
    25  }
    26  
    27  func NewMaxSizeRotateChecker(size int) *MaxSizeRotateChecker {
    28  	return &MaxSizeRotateChecker{
    29  		MaxSize: size,
    30  	}
    31  }
    32  
    33  func (c *MaxSizeRotateChecker) PrepareAppend(vfile VFile, delta int) (needRot bool, err error) {
    34  	if vfile == nil {
    35  		return false, nil
    36  	}
    37  	if vfile.SizeLocked() > c.MaxSize {
    38  		return true, nil
    39  	}
    40  	return false, nil
    41  }