github.com/matrixorigin/matrixone@v1.2.0/pkg/vm/engine/tae/txn/txnbase/helper.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 txnbase
    16  
    17  import (
    18  	"bytes"
    19  	"github.com/matrixorigin/matrixone/pkg/container/types"
    20  	"github.com/matrixorigin/matrixone/pkg/vm/engine/tae/common"
    21  )
    22  
    23  const (
    24  	IDSize = 8 + types.UuidSize + types.BlockidSize + 4 + 2 + 1
    25  )
    26  
    27  func MarshalID(id *common.ID) []byte {
    28  	var err error
    29  	var w bytes.Buffer
    30  	_, err = w.Write(common.EncodeID(id))
    31  	if err != nil {
    32  		panic(err)
    33  	}
    34  	return w.Bytes()
    35  }
    36  
    37  func UnmarshalID(buf []byte) *common.ID {
    38  	var err error
    39  	r := bytes.NewBuffer(buf)
    40  	id := common.ID{}
    41  	_, err = r.Read(common.EncodeID(&id))
    42  	if err != nil {
    43  		panic(err)
    44  	}
    45  	return &id
    46  }