1 /* 2 * Copyright (C) 2023 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 package com.android.server.healthconnect.storage.utils; 18 19 import android.annotation.Nullable; 20 import android.health.connect.Constants; 21 import android.util.Log; 22 23 import com.android.server.healthconnect.storage.datatypehelpers.PreferenceHelper; 24 25 import java.time.Instant; 26 27 /** 28 * Manages entries in {@link PreferenceHelper} which do not belong to a specific class. 29 * 30 * @hide 31 */ 32 public class PreferencesManager { 33 private static final String TAG = "HCPreferencesManager"; 34 35 private static final String AUTO_DELETE_DURATION_RECORDS_KEY = 36 "auto_delete_duration_records_key"; 37 38 /** 39 * Key to store timestamp of the last time any PHR <b>read medical resources</b> API is called. 40 */ 41 private static final String PREFS_KEY_PHR_LAST_READ_MEDICAL_RESOURCES_API = 42 "phr_last_read_medical_resources_api"; 43 44 private final PreferenceHelper mPreferenceHelper; 45 PreferencesManager(PreferenceHelper preferenceHelper)46 public PreferencesManager(PreferenceHelper preferenceHelper) { 47 mPreferenceHelper = preferenceHelper; 48 } 49 50 /** Gets auto delete period for automatically deleting record entries */ getRecordRetentionPeriodInDays()51 public int getRecordRetentionPeriodInDays() { 52 String result = mPreferenceHelper.getPreference(AUTO_DELETE_DURATION_RECORDS_KEY); 53 54 if (result == null) return 0; 55 return Integer.parseInt(result); 56 } 57 58 /** Sets auto delete period for automatically deleting record entries */ setRecordRetentionPeriodInDays(int days)59 public void setRecordRetentionPeriodInDays(int days) { 60 mPreferenceHelper.insertOrReplacePreference( 61 AUTO_DELETE_DURATION_RECORDS_KEY, String.valueOf(days)); 62 } 63 64 /** Sets timestamp of the last time any PHR <b>read medical resources</b> API is called. */ setLastPhrReadMedicalResourcesApiTimeStamp(Instant instant)65 public void setLastPhrReadMedicalResourcesApiTimeStamp(Instant instant) { 66 mPreferenceHelper.insertOrReplacePreference( 67 PREFS_KEY_PHR_LAST_READ_MEDICAL_RESOURCES_API, 68 String.valueOf(instant.toEpochMilli())); 69 } 70 71 /** 72 * Returns timestamp of the last time any PHR <b>read medical resources</b> API is called, 73 * <code>null</code> if it's not stored or the stored value is unfetchable for some reason. 74 */ 75 @Nullable getPhrLastReadMedicalResourcesApiTimeStamp()76 public Instant getPhrLastReadMedicalResourcesApiTimeStamp() { 77 String epochMilliString = 78 mPreferenceHelper.getPreference(PREFS_KEY_PHR_LAST_READ_MEDICAL_RESOURCES_API); 79 if (epochMilliString == null) { 80 return null; 81 } 82 try { 83 long epochMilli = Long.parseLong(epochMilliString); 84 return Instant.ofEpochMilli(epochMilli); 85 } catch (Exception exception) { 86 if (Constants.DEBUG) { 87 Log.e( 88 TAG, 89 "Stored epoch milli for \"" 90 + PREFS_KEY_PHR_LAST_READ_MEDICAL_RESOURCES_API 91 + "\" is corrupted, it cannot be converted to an Instant. Its" 92 + "string value is: " 93 + epochMilliString, 94 exception); 95 } 96 return null; 97 } 98 } 99 } 100