github.com/pingcap/tiflow@v0.0.0-20240520035814-5bf52d54e205/pkg/sink/observer/dummy.go (about)

     1  // Copyright 2023 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 observer
    15  
    16  import (
    17  	"context"
    18  )
    19  
    20  // DummyObserver is an observer that does nothing
    21  type DummyObserver struct{}
    22  
    23  // Tick implements Observer
    24  func (o *DummyObserver) Tick(ctx context.Context) error {
    25  	return nil
    26  }
    27  
    28  // Close implements Observer
    29  func (o *DummyObserver) Close() error {
    30  	return nil
    31  }
    32  
    33  // NewDummyObserver creates a new DummyObserver instance
    34  func NewDummyObserver() *DummyObserver {
    35  	return &DummyObserver{}
    36  }