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91 lines
2.6 KiB
91 lines
2.6 KiB
/*
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* Copyright 2021 The Android Open Source Project
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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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* http://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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*/
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#pragma once
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#include <unordered_map>
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#include "types/raw_address.h"
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namespace bluetooth {
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namespace shim {
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using CallbackLegacy =
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std::function<bool(const RawAddress& address, const int id)>;
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/**
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* Initialize the allocator
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*
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* @param paired_device_map map from mac_address to id already saved
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* in the disk before init
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* @param save_id_callback a callback that will be called after successfully
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* saving id for a paired device
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* @param forget_device_callback a callback that will be called after
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* successful id deletion for forgotten device,
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* @return true if successfully initialized
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*/
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bool InitMetricIdAllocator(
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const std::unordered_map<RawAddress, int>& paired_device_map,
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CallbackLegacy save_id_callback, CallbackLegacy forget_device_callback);
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/**
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* Close the allocator. should be called when Bluetooth process is killed
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*
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* @return true if successfully close
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*/
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bool CloseMetricIdAllocator();
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/**
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* Check if no id saved in memory
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*
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* @return true if no id is saved
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*/
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bool IsEmptyMetricIdAllocator();
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/**
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* Allocate an id for a scanned device, or return the id if there is already
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* one
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*
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* @param raw_address mac address of Bluetooth device
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* @return the id of device
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*/
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int AllocateIdFromMetricIdAllocator(const RawAddress& raw_address);
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/**
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* Save the id for a paired device
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*
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* @param raw_address mac address of Bluetooth device
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* @return true if save successfully
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*/
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bool SaveDeviceOnMetricIdAllocator(const RawAddress& raw_address);
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/**
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* Delete the id for a device to be forgotten
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*
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* @param raw_address mac address of Bluetooth device
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*/
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void ForgetDeviceFromMetricIdAllocator(const RawAddress& raw_address);
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/**
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* Check if an id is valid.
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* The id should be less than or equal to kMaxId and bigger than or equal to
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* kMinId
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*
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* @param mac_address mac address of Bluetooth device
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* @return true if delete successfully
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*/
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bool IsValidIdFromMetricIdAllocator(const int id);
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} // namespace shim
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} // namespace bluetooth
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