1 //
2 // Copyright (C) 2020 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 #pragma once
17 
18 #include <memory>
19 #include <string>
20 #include <vector>
21 
22 #include <json/json.h>
23 
24 #include "host/frontend/webrtc_operator/device_registry.h"
25 #include "host/frontend/webrtc_operator/server_config.h"
26 #include "host/frontend/webrtc_operator/signal_handler.h"
27 #include "host/libs/websocket/websocket_handler.h"
28 
29 namespace cuttlefish {
30 
31 class ClientHandler;
32 
33 class DeviceHandler : public SignalHandler,
34                       public std::enable_shared_from_this<DeviceHandler> {
35  public:
36   DeviceHandler(struct lws* wsi, DeviceRegistry* registry,
37                 const ServerConfig& server_config);
38 
device_info()39   Json::Value device_info() const { return device_info_; }
40 
41   size_t RegisterClient(std::shared_ptr<ClientHandler> client_handler);
42   void SendClientMessage(size_t client_id, const Json::Value& message);
43   void SendClientDisconnectMessage(size_t client_id);
44 
45   void OnClosed() override;
46 
47  protected:
48   void handleMessage(const std::string& type,
49                     const Json::Value& message) override;
50 
51  private:
52   void HandleRegistrationRequest(const Json::Value& message);
53   void HandleForward(const Json::Value& message);
54 
55   std::string device_id_;
56   Json::Value device_info_;
57   std::vector<std::weak_ptr<ClientHandler>> clients_;
58 };
59 
60 class DeviceHandlerFactory : public WebSocketHandlerFactory {
61  public:
62   DeviceHandlerFactory(DeviceRegistry* registry,
63                        const ServerConfig& server_config);
64   std::shared_ptr<WebSocketHandler> Build(struct lws* wsi) override;
65 
66  private:
67   DeviceRegistry* registry_;
68   const ServerConfig& server_config_;
69 };
70 }  // namespace cuttlefish
71