mirror of
https://github.com/kidfromjupiter/nearby.git
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142 lines
5.2 KiB
C++
142 lines
5.2 KiB
C++
// Copyright 2021-2023 Google LLC
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//
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// Licensed under the Apache License, Version 2.0 (the "License");
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// you may not use this file except in compliance with the License.
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// You may obtain a copy of the License at
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//
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// https://www.apache.org/licenses/LICENSE-2.0
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//
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// Unless required by applicable law or agreed to in writing, software
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// distributed under the License is distributed on an "AS IS" BASIS,
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// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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// See the License for the specific language governing permissions and
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// limitations under the License.
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#ifndef PLATFORM_IMPLEMENTATION_LINUX_PREFERENCES_MANAGER_H_
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#define PLATFORM_IMPLEMENTATION_LINUX_PREFERENCES_MANAGER_H_
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#include <stdint.h>
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#include <memory>
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#include <string>
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#include <vector>
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#include "absl/base/thread_annotations.h"
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#include "absl/strings/string_view.h"
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#include "absl/synchronization/mutex.h"
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#include "absl/time/time.h"
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#include "absl/types/span.h"
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#include "internal/platform/implementation/linux/preferences_repository.h"
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#include "internal/platform/implementation/preferences_manager.h"
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#include "nlohmann/json.hpp"
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#include "nlohmann/json_fwd.hpp"
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namespace nearby {
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namespace linux {
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// Sets and gets preference settings from the application.
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// Preferences are persistent storage for application settings, it is key/value
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// based settings. Application components can observe the interested preference
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// change by the observer.
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class PreferencesManager : public api::PreferencesManager {
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public:
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explicit PreferencesManager(absl::string_view path);
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// Sets values
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bool Set(absl::string_view key, const nlohmann::json& value) override
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ABSL_LOCKS_EXCLUDED(mutex_);
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bool SetBoolean(absl::string_view key, bool value) override
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ABSL_LOCKS_EXCLUDED(mutex_);
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bool SetInteger(absl::string_view key, int value) override
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ABSL_LOCKS_EXCLUDED(mutex_);
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bool SetInt64(absl::string_view key, int64_t value) override
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ABSL_LOCKS_EXCLUDED(mutex_);
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bool SetString(absl::string_view key, absl::string_view value) override
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ABSL_LOCKS_EXCLUDED(mutex_);
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bool SetBooleanArray(absl::string_view key,
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absl::Span<const bool> value) override
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ABSL_LOCKS_EXCLUDED(mutex_);
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bool SetIntegerArray(absl::string_view key,
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absl::Span<const int> value) override
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ABSL_LOCKS_EXCLUDED(mutex_);
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bool SetInt64Array(absl::string_view key,
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absl::Span<const int64_t> value) override
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ABSL_LOCKS_EXCLUDED(mutex_);
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bool SetStringArray(absl::string_view key,
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absl::Span<const std::string> value) override
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ABSL_LOCKS_EXCLUDED(mutex_);
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bool SetTime(absl::string_view key, absl::Time value) override
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ABSL_LOCKS_EXCLUDED(mutex_);
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// Gets values
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nlohmann::json Get(absl::string_view key,
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const nlohmann::json& default_value) const override
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ABSL_LOCKS_EXCLUDED(mutex_);
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bool GetBoolean(absl::string_view key, bool default_value) const override
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ABSL_LOCKS_EXCLUDED(mutex_);
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int GetInteger(absl::string_view key, int default_value) const override
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ABSL_LOCKS_EXCLUDED(mutex_);
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int64_t GetInt64(absl::string_view key, int64_t default_value) const override
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ABSL_LOCKS_EXCLUDED(mutex_);
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std::string GetString(absl::string_view key,
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const std::string& default_value) const override
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ABSL_LOCKS_EXCLUDED(mutex_);
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std::vector<bool> GetBooleanArray(absl::string_view key,
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absl::Span<const bool> default_value)
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const override ABSL_LOCKS_EXCLUDED(mutex_);
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std::vector<int> GetIntegerArray(
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absl::string_view key, absl::Span<const int> default_value) const override
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ABSL_LOCKS_EXCLUDED(mutex_);
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std::vector<int64_t> GetInt64Array(absl::string_view key,
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absl::Span<const int64_t> default_value)
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const override ABSL_LOCKS_EXCLUDED(mutex_);
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std::vector<std::string> GetStringArray(
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absl::string_view key,
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absl::Span<const std::string> default_value) const override
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ABSL_LOCKS_EXCLUDED(mutex_);
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absl::Time GetTime(absl::string_view key,
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absl::Time default_value) const override
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ABSL_LOCKS_EXCLUDED(mutex_);
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// Removes preferences
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void Remove(absl::string_view key) override ABSL_LOCKS_EXCLUDED(mutex_);
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private:
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// Writes data to storage.
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bool Commit() ABSL_EXCLUSIVE_LOCKS_REQUIRED(mutex_);
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bool SetValue(absl::string_view key, const nlohmann::json& value)
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ABSL_EXCLUSIVE_LOCKS_REQUIRED(mutex_);
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template <typename T>
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T GetValue(absl::string_view key, const T& default_value) const
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ABSL_EXCLUSIVE_LOCKS_REQUIRED(mutex_);
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template <typename T>
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bool SetArrayValue(absl::string_view key, absl::Span<const T> value)
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ABSL_EXCLUSIVE_LOCKS_REQUIRED(mutex_);
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template <typename T>
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std::vector<T> GetArrayValue(absl::string_view key,
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absl::Span<const T> default_value) const
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ABSL_EXCLUSIVE_LOCKS_REQUIRED(mutex_);
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nlohmann::json value_ ABSL_GUARDED_BY(mutex_);
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std::unique_ptr<PreferencesRepository> preferences_repository_
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ABSL_GUARDED_BY(mutex_);
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mutable absl::Mutex mutex_;
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};
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} // namespace linux
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} // namespace nearby
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#endif // PLATFORM_IMPLEMENTATION_LINUX_PREFERENCES_MANAGER_H_
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