1 /*
2  * Copyright (C) 2017 The Android Open Source Project
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 #pragma once
18 
19 #include "config/ConfigKey.h"
20 
21 #include <utils/RefBase.h>
22 
23 namespace android {
24 namespace os {
25 namespace statsd {
26 
27 using android::RefBase;
28 
29 /**
30  * Callback for different subsystems inside statsd to implement to find out
31  * when a configuration has been added, updated or removed.
32  */
33 class ConfigListener : public virtual RefBase {
34 public:
35     ConfigListener();
36     virtual ~ConfigListener();
37 
38     /**
39      * A configuration was added or updated.
40      */
41     virtual void OnConfigUpdated(const int64_t timestampNs, const ConfigKey& key,
42                                  const StatsdConfig& config) = 0;
43 
44     /**
45      * A configuration was removed.
46      */
47     virtual void OnConfigRemoved(const ConfigKey& key) = 0;
48 };
49 
50 }  // namespace statsd
51 }  // namespace os
52 }  // namespace android
53