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 #ifndef UPDATE_ENGINE_UPDATE_MANAGER_ANDROID_THINGS_POLICY_H_
18 #define UPDATE_ENGINE_UPDATE_MANAGER_ANDROID_THINGS_POLICY_H_
19 
20 #include <string>
21 
22 #include "update_engine/update_manager/next_update_check_policy_impl.h"
23 #include "update_engine/update_manager/policy_utils.h"
24 
25 namespace chromeos_update_manager {
26 
27 // AndroidThingsPolicy implements the policy-related logic used in
28 // AndroidThings.
29 class AndroidThingsPolicy : public Policy {
30  public:
31   AndroidThingsPolicy() = default;
32   ~AndroidThingsPolicy() override = default;
33 
34   // Policy overrides.
35   EvalStatus UpdateCheckAllowed(EvaluationContext* ec,
36                                 State* state,
37                                 std::string* error,
38                                 UpdateCheckParams* result) const override;
39 
40   // Uses the |UpdateRestrictions| to determine if the download and apply can
41   // occur at this time.
42   EvalStatus UpdateCanBeApplied(
43       EvaluationContext* ec,
44       State* state,
45       std::string* error,
46       chromeos_update_engine::ErrorCode* result,
47       chromeos_update_engine::InstallPlan* install_plan) const override;
48 
49   // Always returns |EvalStatus::kSucceeded|
50   EvalStatus UpdateCanStart(EvaluationContext* ec,
51                             State* state,
52                             std::string* error,
53                             UpdateDownloadParams* result,
54                             UpdateState update_state) const override;
55 
56   // Always returns |EvalStatus::kSucceeded|
57   EvalStatus UpdateDownloadAllowed(EvaluationContext* ec,
58                                    State* state,
59                                    std::string* error,
60                                    bool* result) const override;
61 
62   // P2P is always disabled.  Returns |result|==|false| and
63   // |EvalStatus::kSucceeded|
64   EvalStatus P2PEnabled(EvaluationContext* ec,
65                         State* state,
66                         std::string* error,
67                         bool* result) const override;
68 
69   // This will return immediately with |EvalStatus::kSucceeded| and set
70   // |result|==|false|
71   EvalStatus P2PEnabledChanged(EvaluationContext* ec,
72                                State* state,
73                                std::string* error,
74                                bool* result,
75                                bool prev_result) const override;
76 
77  protected:
78   // Policy override.
79   std::string PolicyName() const override { return "AndroidThingsPolicy"; }
80 
81  private:
82   friend class UmAndroidThingsPolicyTest;
83   FRIEND_TEST(UmAndroidThingsPolicyTest, UpdateCheckAllowedWaitsForTheTimeout);
84 
85   static const NextUpdateCheckPolicyConstants kNextUpdateCheckPolicyConstants;
86 
87   DISALLOW_COPY_AND_ASSIGN(AndroidThingsPolicy);
88 };
89 
90 }  // namespace chromeos_update_manager
91 
92 #endif  // UPDATE_ENGINE_UPDATE_MANAGER_ANDROID_THINGS_POLICY_H_
93