1 /* <lambda>null2 * Copyright (C) 2021 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.keyguard 18 19 import androidx.annotation.VisibleForTesting 20 import java.io.PrintWriter 21 import java.text.DateFormat 22 import java.text.SimpleDateFormat 23 import java.util.Date 24 import java.util.Locale 25 import kotlin.collections.ArrayDeque 26 27 private val DEFAULT_FORMATTING = SimpleDateFormat("yyyy-MM-dd HH:mm:ss.SSS", Locale.US) 28 29 /** Queue for verbose logging checks for the listening state. */ 30 class KeyguardListenQueue( 31 val sizePerModality: Int = 20 32 ) { 33 private val faceQueue = ArrayDeque<KeyguardFaceListenModel>() 34 private val fingerprintQueue = ArrayDeque<KeyguardFingerprintListenModel>() 35 36 @get:VisibleForTesting val models: List<KeyguardListenModel> 37 get() = faceQueue + fingerprintQueue 38 39 /** Push a [model] to the queue (will be logged until the queue exceeds [sizePerModality]). */ 40 fun add(model: KeyguardListenModel) { 41 val queue = when (model) { 42 is KeyguardFaceListenModel -> faceQueue.apply { add(model) } 43 is KeyguardFingerprintListenModel -> fingerprintQueue.apply { add(model) } 44 } 45 46 if (queue.size > sizePerModality) { 47 queue.removeFirstOrNull() 48 } 49 } 50 51 /** Print verbose logs via the [writer]. */ 52 @JvmOverloads 53 fun print(writer: PrintWriter, dateFormat: DateFormat = DEFAULT_FORMATTING) { 54 val stringify: (KeyguardListenModel) -> String = { model -> 55 " ${dateFormat.format(Date(model.timeMillis))} $model" 56 } 57 58 writer.println(" Face listen results (last ${faceQueue.size} calls):") 59 for (model in faceQueue) { 60 writer.println(stringify(model)) 61 } 62 writer.println(" Fingerprint listen results (last ${fingerprintQueue.size} calls):") 63 for (model in fingerprintQueue) { 64 writer.println(stringify(model)) 65 } 66 } 67 } 68