| commit | author | age | ||
| df1e8e | 1 | /* |
| L | 2 | * Copyright 2021 Google LLC |
| 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 | #import <Foundation/Foundation.h> | |
| 18 | ||
| 19 | NS_ASSUME_NONNULL_BEGIN | |
| 20 | ||
| 21 | /** | |
| 22 | * Describes an object that can store and fetch heartbeat dates for given tags. | |
| 23 | */ | |
| 24 | @protocol GULHeartbeatDateStorable <NSObject> | |
| 25 | ||
| 26 | /** | |
| 27 | * Reads the date from the specified file for the given tag. | |
| 28 | * @return Returns date if exists, otherwise `nil`. | |
| 29 | */ | |
| 30 | - (nullable NSDate *)heartbeatDateForTag:(NSString *)tag; | |
| 31 | ||
| 32 | /** | |
| 33 | * Saves the date for the specified tag in the specified file. | |
| 34 | * @return YES on success, NO otherwise. | |
| 35 | */ | |
| 36 | - (BOOL)setHearbeatDate:(NSDate *)date forTag:(NSString *)tag; | |
| 37 | ||
| 38 | @end | |
| 39 | ||
| 40 | NS_ASSUME_NONNULL_END | |
