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#include <string>
23
24namespace android {
25namespace os {
26namespace statsd {
27
28using android::RefBase;
29using std::string;
30
31/**
32 * Callback for different subsystems inside statsd to implement to find out
33 * when a configuration has been added, updated or removed.
34 */
35class ConfigListener : public virtual RefBase {
36public:
37    ConfigListener();
38    virtual ~ConfigListener();
39
40    /**
41     * A configuration was added or updated.
42     */
43    virtual void OnConfigUpdated(const int64_t timestampNs, const ConfigKey& key,
44                                 const StatsdConfig& config) = 0;
45
46    /**
47     * A configuration was removed.
48     */
49    virtual void OnConfigRemoved(const ConfigKey& key) = 0;
50};
51
52}  // namespace statsd
53}  // namespace os
54}  // namespace android
55