github.com/pingcap/tiflow@v0.0.0-20240520035814-5bf52d54e205/cdc/sink/dmlsink/mq/dispatcher/partition/dispatcher.go (about)

     1  // Copyright 2022 PingCAP, Inc.
     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  // See the License for the specific language governing permissions and
    12  // limitations under the License.
    13  
    14  package partition
    15  
    16  import (
    17  	"github.com/pingcap/tiflow/cdc/model"
    18  )
    19  
    20  // Dispatcher is an abstraction for dispatching rows into different partitions
    21  type Dispatcher interface {
    22  	// DispatchRowChangedEvent returns an index of partitions or a partition key
    23  	//  according to RowChangedEvent.
    24  	// Concurrency Note: This method is thread-safe.
    25  	DispatchRowChangedEvent(row *model.RowChangedEvent, partitionNum int32) (int32, string, error)
    26  }