1 /*
2  * Copyright (C) 2016 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 #ifndef NETD_SERVER_EVENT_REPORTER_H
18 #define NETD_SERVER_EVENT_REPORTER_H
19 
20 #include <map>
21 #include <mutex>
22 
23 #include <android-base/thread_annotations.h>
24 #include <binder/IServiceManager.h>
25 #include "android/net/INetd.h"
26 #include "android/net/INetdUnsolicitedEventListener.h"
27 #include "android/net/metrics/INetdEventListener.h"
28 
29 /*
30  * This class can be used to get the event listener service.
31  */
32 class EventReporter {
33   public:
34     using UnsolListenerMap =
35             std::map<const android::sp<android::net::INetdUnsolicitedEventListener>,
36                      const android::sp<android::IBinder::DeathRecipient>>;
37 
38     // Returns the binder reference to the netd events listener service, attempting to fetch it if
39     // we do not have it already. This method is threadsafe.
40     android::sp<android::net::metrics::INetdEventListener> getNetdEventListener();
41 
42     // Returns a copy of the registered listeners.
43     UnsolListenerMap getNetdUnsolicitedEventListenerMap() const EXCLUDES(mUnsolicitedMutex);
44 
45     void registerUnsolEventListener(
46             const android::sp<android::net::INetdUnsolicitedEventListener>& listener)
47             EXCLUDES(mUnsolicitedMutex);
48     void unregisterUnsolEventListener(
49             const android::sp<android::net::INetdUnsolicitedEventListener>& listener)
50             EXCLUDES(mUnsolicitedMutex);
51 
52   private:
53     std::mutex mEventMutex;
54     mutable std::mutex mUnsolicitedMutex;
55     android::sp<android::net::metrics::INetdEventListener> mNetdEventListener
56             GUARDED_BY(mEventMutex);
57     UnsolListenerMap mUnsolListenerMap GUARDED_BY(mUnsolicitedMutex);
58 };
59 
60 #endif  // NETD_SERVER_EVENT_REPORTER_H
61