github.com/pingcap/tiflow@v0.0.0-20240520035814-5bf52d54e205/engine/framework/internal/master/events.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 master
    15  
    16  import frameModel "github.com/pingcap/tiflow/engine/framework/model"
    17  
    18  type masterEventType int32
    19  
    20  const (
    21  	workerOnlineEvent = masterEventType(iota + 1)
    22  	workerOfflineEvent
    23  	workerStatusUpdatedEvent
    24  	workerDispatchFailedEvent
    25  )
    26  
    27  type beforeHookType = func() (ok bool)
    28  
    29  type masterEvent struct {
    30  	Tp         masterEventType
    31  	Handle     WorkerHandle
    32  	WorkerID   frameModel.WorkerID
    33  	Err        error
    34  	beforeHook beforeHookType
    35  }