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 UPDATE_ENGINE_SERVICE_OBSERVER_INTERFACE_H_
18 #define UPDATE_ENGINE_SERVICE_OBSERVER_INTERFACE_H_
19 
20 #include <memory>
21 #include <string>
22 
23 #include "update_engine/client_library/include/update_engine/update_status.h"
24 #include "update_engine/common/error_code.h"
25 
26 namespace chromeos_update_engine {
27 
28 class ServiceObserverInterface {
29  public:
30   virtual ~ServiceObserverInterface() = default;
31 
32   // Called whenever the value of these parameters changes. For |progress|
33   // value changes, this method will be called only if it changes significantly.
34   virtual void SendStatusUpdate(int64_t last_checked_time,
35                                 double progress,
36                                 update_engine::UpdateStatus status,
37                                 const std::string& new_version,
38                                 int64_t new_size) = 0;
39 
40   // Called whenever an update attempt is completed.
41   virtual void SendPayloadApplicationComplete(ErrorCode error_code) = 0;
42 
43   // Called whenever the channel we are tracking changes.
44   virtual void SendChannelChangeUpdate(const std::string& tracking_channel) = 0;
45 
46  protected:
47   ServiceObserverInterface() = default;
48 };
49 
50 }  // namespace chromeos_update_engine
51 
52 #endif  // UPDATE_ENGINE_SERVICE_OBSERVER_INTERFACE_H_
53