github.com/matrixorigin/matrixone@v1.2.0/pkg/vm/engine/tae/logstore/store/partialckp.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 store
    16  
    17  import (
    18  	"fmt"
    19  	"io"
    20  
    21  	"github.com/RoaringBitmap/roaring"
    22  	"github.com/matrixorigin/matrixone/pkg/common/moerr"
    23  	"github.com/matrixorigin/matrixone/pkg/container/types"
    24  	"github.com/matrixorigin/matrixone/pkg/vm/engine/tae/logstore/entry"
    25  )
    26  
    27  type partialCkpInfo struct {
    28  	size uint32
    29  	ckps *roaring.Bitmap
    30  }
    31  
    32  func newPartialCkpInfo(size uint32) *partialCkpInfo {
    33  	return &partialCkpInfo{
    34  		ckps: &roaring.Bitmap{},
    35  		size: size,
    36  	}
    37  }
    38  
    39  func (info *partialCkpInfo) String() string {
    40  	return fmt.Sprintf("%s/%d", info.ckps.String(), info.size)
    41  }
    42  
    43  func (info *partialCkpInfo) IsAllCheckpointed() bool {
    44  	return info.size == uint32(info.ckps.GetCardinality())
    45  }
    46  
    47  func (info *partialCkpInfo) MergePartialCkpInfo(o *partialCkpInfo) {
    48  	if info.size != o.size {
    49  		panic(moerr.NewInternalErrorNoCtx("logic error %d != %d", info.size, o.size))
    50  	}
    51  	info.ckps.Or(o.ckps)
    52  }
    53  
    54  func (info *partialCkpInfo) MergeCommandInfos(cmds *entry.CommandInfo) {
    55  	if info.size != cmds.Size {
    56  		panic(moerr.NewInternalErrorNoCtx("logic error %d != %d", info.size, cmds.Size))
    57  	}
    58  	for _, csn := range cmds.CommandIds {
    59  		info.ckps.Add(csn)
    60  	}
    61  }
    62  
    63  func (info *partialCkpInfo) WriteTo(w io.Writer) (n int64, err error) {
    64  	if _, err = w.Write(types.EncodeUint32(&info.size)); err != nil {
    65  		return
    66  	}
    67  	n += 4
    68  	ckpsn, err := info.ckps.WriteTo(w)
    69  	n += ckpsn
    70  	if err != nil {
    71  		return
    72  	}
    73  	return
    74  }
    75  
    76  func (info *partialCkpInfo) ReadFrom(r io.Reader) (n int64, err error) {
    77  	if _, err = r.Read(types.EncodeUint32(&info.size)); err != nil {
    78  		return
    79  	}
    80  	n += 4
    81  	info.ckps = roaring.New()
    82  	ckpsn, err := info.ckps.ReadFrom(r)
    83  	n += ckpsn
    84  	if err != nil {
    85  		return
    86  	}
    87  	return
    88  }