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      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