github.com/braveheart12/just@v0.8.7/ledger/storage/index/lifeline.go (about)

     1  /*
     2   *    Copyright 2019 Insolar Technologies
     3   *
     4   *    Licensed under the Apache License, Version 2.0 (the "License");
     5   *    you may not use this file except in compliance with the License.
     6   *    You may obtain a copy of the License at
     7   *
     8   *        http://www.apache.org/licenses/LICENSE-2.0
     9   *
    10   *    Unless required by applicable law or agreed to in writing, software
    11   *    distributed under the License is distributed on an "AS IS" BASIS,
    12   *    WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
    13   *    See the License for the specific language governing permissions and
    14   *    limitations under the License.
    15   */
    16  
    17  package index
    18  
    19  import (
    20  	"bytes"
    21  
    22  	"github.com/insolar/insolar/core"
    23  	"github.com/insolar/insolar/ledger/storage/record"
    24  	"github.com/ugorji/go/codec"
    25  )
    26  
    27  // ObjectLifeline represents meta information for record object.
    28  type ObjectLifeline struct {
    29  	LatestState         *core.RecordID // Amend or activate record.
    30  	LatestStateApproved *core.RecordID // State approved by VM.
    31  	ChildPointer        *core.RecordID // Meta record about child activation.
    32  	Parent              core.RecordRef
    33  	Delegates           map[core.RecordRef]core.RecordRef
    34  	State               record.State
    35  	LatestUpdate        core.PulseNumber
    36  }
    37  
    38  // EncodeObjectLifeline converts lifeline index into binary format.
    39  func EncodeObjectLifeline(index *ObjectLifeline) ([]byte, error) {
    40  	var buf bytes.Buffer
    41  	enc := codec.NewEncoder(&buf, &codec.CborHandle{})
    42  	err := enc.Encode(index)
    43  	if err != nil {
    44  		return nil, err
    45  	}
    46  	return buf.Bytes(), nil
    47  }
    48  
    49  // DecodeObjectLifeline converts byte array into lifeline index struct.
    50  func DecodeObjectLifeline(buf []byte) (*ObjectLifeline, error) {
    51  	dec := codec.NewDecoder(bytes.NewReader(buf), &codec.CborHandle{})
    52  	var index ObjectLifeline
    53  	err := dec.Decode(&index)
    54  	if err != nil {
    55  		return nil, err
    56  	}
    57  	return &index, nil
    58  }