1 /*
2  * Copyright (C) 2018 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 <string>
20 #include <vector>
21 
22 #include "action.h"
23 #include "builtins.h"
24 
25 namespace android {
26 namespace init {
27 
28 class ActionManager {
29   public:
30     static ActionManager& GetInstance();
31 
32     // Exposed for testing
33     ActionManager();
34     size_t CheckAllCommands();
35 
36     void AddAction(std::unique_ptr<Action> action);
37     void QueueEventTrigger(const std::string& trigger);
38     void QueuePropertyChange(const std::string& name, const std::string& value);
39     void QueueAllPropertyActions();
40     void QueueBuiltinAction(BuiltinFunction func, const std::string& name);
41     void ExecuteOneCommand();
42     bool HasMoreCommands() const;
43     void DumpState() const;
44     void ClearQueue();
45 
46   private:
47     ActionManager(ActionManager const&) = delete;
48     void operator=(ActionManager const&) = delete;
49 
50     std::vector<std::unique_ptr<Action>> actions_;
51     std::queue<std::variant<EventTrigger, PropertyChange, BuiltinAction>> event_queue_;
52     std::queue<const Action*> current_executing_actions_;
53     std::size_t current_command_;
54 };
55 
56 }  // namespace init
57 }  // namespace android
58