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      1 /*
      2  * Copyright (C) 2017 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.dialer.performancereport;
     18 
     19 import android.os.SystemClock;
     20 import android.support.annotation.Nullable;
     21 import android.support.v7.widget.RecyclerView;
     22 import android.widget.AbsListView;
     23 import com.android.dialer.common.LogUtil;
     24 import com.android.dialer.logging.UiAction;
     25 import java.util.ArrayList;
     26 import java.util.List;
     27 import java.util.concurrent.TimeUnit;
     28 
     29 /** Tracks UI performance for a call. */
     30 public final class PerformanceReport {
     31 
     32   private static final long INVALID_TIME = -1;
     33   private static final long ACTIVE_DURATION = TimeUnit.MINUTES.toMillis(5);
     34 
     35   private static final List<UiAction.Type> actions = new ArrayList<>();
     36   private static final List<Long> actionTimestamps = new ArrayList<>();
     37 
     38   private static final RecyclerView.OnScrollListener recordOnScrollListener =
     39       new RecyclerView.OnScrollListener() {
     40         @Override
     41         public void onScrollStateChanged(RecyclerView recyclerView, int newState) {
     42           if (newState == RecyclerView.SCROLL_STATE_SETTLING) {
     43             PerformanceReport.recordClick(UiAction.Type.SCROLL);
     44           }
     45           super.onScrollStateChanged(recyclerView, newState);
     46         }
     47       };
     48 
     49   private static boolean recording = false;
     50   private static long appLaunchTimeMillis = INVALID_TIME;
     51   private static long firstClickTimeMillis = INVALID_TIME;
     52   private static long lastActionTimeMillis = INVALID_TIME;
     53 
     54   @Nullable private static UiAction.Type ignoreActionOnce = null;
     55 
     56   private static int startingTabIndex = -1; // UNKNOWN
     57 
     58   private PerformanceReport() {}
     59 
     60   public static void startRecording() {
     61     LogUtil.enterBlock("PerformanceReport.startRecording");
     62 
     63     appLaunchTimeMillis = SystemClock.elapsedRealtime();
     64     lastActionTimeMillis = appLaunchTimeMillis;
     65     if (!actions.isEmpty()) {
     66       actions.clear();
     67       actionTimestamps.clear();
     68     }
     69     recording = true;
     70   }
     71 
     72   public static void stopRecording() {
     73     LogUtil.enterBlock("PerformanceReport.stopRecording");
     74     recording = false;
     75   }
     76 
     77   public static void recordClick(UiAction.Type action) {
     78     if (!recording) {
     79       return;
     80     }
     81 
     82     if (action == ignoreActionOnce) {
     83       LogUtil.i("PerformanceReport.recordClick", "%s is ignored", action.toString());
     84       ignoreActionOnce = null;
     85       return;
     86     }
     87     ignoreActionOnce = null;
     88 
     89     LogUtil.v("PerformanceReport.recordClick", action.toString());
     90 
     91     // Timeout
     92     long currentTime = SystemClock.elapsedRealtime();
     93     if (currentTime - lastActionTimeMillis > ACTIVE_DURATION) {
     94       startRecording();
     95       recordClick(action);
     96       return;
     97     }
     98 
     99     lastActionTimeMillis = currentTime;
    100     if (actions.isEmpty()) {
    101       firstClickTimeMillis = currentTime;
    102     }
    103     actions.add(action);
    104     actionTimestamps.add(currentTime - appLaunchTimeMillis);
    105   }
    106 
    107   public static void recordScrollStateChange(int scrollState) {
    108     if (scrollState == AbsListView.OnScrollListener.SCROLL_STATE_TOUCH_SCROLL) {
    109       recordClick(UiAction.Type.SCROLL);
    110     }
    111   }
    112 
    113   public static void logOnScrollStateChange(RecyclerView recyclerView) {
    114     // Remove the listener in case it was added before
    115     recyclerView.removeOnScrollListener(recordOnScrollListener);
    116     recyclerView.addOnScrollListener(recordOnScrollListener);
    117   }
    118 
    119   public static boolean isRecording() {
    120     return recording;
    121   }
    122 
    123   public static long getTimeSinceAppLaunch() {
    124     if (appLaunchTimeMillis == INVALID_TIME) {
    125       return INVALID_TIME;
    126     }
    127     return SystemClock.elapsedRealtime() - appLaunchTimeMillis;
    128   }
    129 
    130   public static long getTimeSinceFirstClick() {
    131     if (firstClickTimeMillis == INVALID_TIME) {
    132       return INVALID_TIME;
    133     }
    134     return SystemClock.elapsedRealtime() - firstClickTimeMillis;
    135   }
    136 
    137   public static List<UiAction.Type> getActions() {
    138     return actions;
    139   }
    140 
    141   public static List<Long> getActionTimestamps() {
    142     return actionTimestamps;
    143   }
    144 
    145   public static int getStartingTabIndex() {
    146     return startingTabIndex;
    147   }
    148 
    149   public static void setStartingTabIndex(int startingTabIndex) {
    150     PerformanceReport.startingTabIndex = startingTabIndex;
    151   }
    152 
    153   public static void setIgnoreActionOnce(@Nullable UiAction.Type ignoreActionOnce) {
    154     PerformanceReport.ignoreActionOnce = ignoreActionOnce;
    155     LogUtil.i(
    156         "PerformanceReport.setIgnoreActionOnce",
    157         "next action will be ignored once if it is %s",
    158         ignoreActionOnce.toString());
    159   }
    160 }
    161