github.com/matrixorigin/matrixone@v1.2.0/pkg/vm/process/topValueMsg.go (about)

     1  // Copyright 2022 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 process
    16  
    17  import "github.com/matrixorigin/matrixone/pkg/objectio"
    18  
    19  var _ Message = new(TopValueMessage)
    20  
    21  type TopValueMessage struct {
    22  	TopValueZM objectio.ZoneMap
    23  	Tag        int32
    24  }
    25  
    26  func (t TopValueMessage) Serialize() []byte {
    27  	panic("top value message only broadcasts on current CN, don't need to serialize")
    28  }
    29  
    30  func (t TopValueMessage) Deserialize([]byte) Message {
    31  	panic("top value message only broadcasts on current CN, don't need to deserialize")
    32  }
    33  
    34  func (t TopValueMessage) NeedBlock() bool {
    35  	return false
    36  }
    37  
    38  func (t TopValueMessage) GetMsgTag() int32 {
    39  	return t.Tag
    40  }
    41  
    42  func (t TopValueMessage) GetReceiverAddr() MessageAddress {
    43  	return AddrBroadCastOnCurrentCN()
    44  }