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/*
* Copyright (C) 2016 The Android Open Source Project
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
#ifndef BOOT_EVENT_RECORD_STORE_H_
#define BOOT_EVENT_RECORD_STORE_H_
#include <android-base/macros.h>
#include <gtest/gtest_prod.h>
#include <cstdint>
#include <string>
#include <utility>
#include <vector>
// BootEventRecordStore manages the persistence of boot events to the record
// store and the retrieval of all boot event records from the store.
class BootEventRecordStore {
public:
// A BootEventRecord consists of the event name and the timestamp the event
// occurred.
typedef std::pair<std::string, int32_t> BootEventRecord;
BootEventRecordStore();
// Persists the boot |event| in the record store.
void AddBootEvent(const std::string& event);
// Persists the boot |event| with the associated |value| in the record store.
void AddBootEventWithValue(const std::string& event, int32_t value);
// Queries the named boot |event|. |record| must be non-null. |record|
// contains the boot event data on success. Returns true iff the query is
// successful.
bool GetBootEvent(const std::string& event, BootEventRecord* record) const;
// Returns a list of all of the boot events persisted in the record store.
std::vector<BootEventRecord> GetAllBootEvents() const;
private:
// The tests call SetStorePath to override the default store location with a
// more test-friendly path.
FRIEND_TEST(BootEventRecordStoreTest, AddSingleBootEvent);
FRIEND_TEST(BootEventRecordStoreTest, AddMultipleBootEvents);
FRIEND_TEST(BootEventRecordStoreTest, AddBootEventWithValue);
FRIEND_TEST(BootEventRecordStoreTest, GetBootEvent);
FRIEND_TEST(BootEventRecordStoreTest, GetBootEventNoFileContent);
// Sets the filesystem path of the record store.
void SetStorePath(const std::string& path);
// Constructs the full path of the given boot |event|.
std::string GetBootEventPath(const std::string& event) const;
// The filesystem path of the record store.
std::string store_path_;
DISALLOW_COPY_AND_ASSIGN(BootEventRecordStore);
};
#endif // BOOT_EVENT_RECORD_STORE_H_