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      1 /*
      2  * Copyright (C) 2016 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.tv.analytics;
     18 
     19 import android.content.Context;
     20 import android.os.Handler;
     21 import android.os.Looper;
     22 import android.support.annotation.MainThread;
     23 import com.android.tv.data.ChannelDataManager;
     24 import com.android.tv.data.api.Channel;
     25 import com.android.tv.util.RecurringRunner;
     26 import java.util.List;
     27 import java.util.concurrent.TimeUnit;
     28 
     29 /**
     30  * Periodically sends analytics data with the channel count.
     31  *
     32  * <p>
     33  *
     34  * <p>This should only be started from a user activity like {@link com.android.tv.MainActivity}.
     35  */
     36 @MainThread
     37 public class SendChannelStatusRunnable implements Runnable {
     38     private static final long SEND_CHANNEL_STATUS_INTERVAL_MS = TimeUnit.DAYS.toMillis(1);
     39 
     40     public static RecurringRunner startChannelStatusRecurringRunner(
     41             Context context, Tracker tracker, ChannelDataManager channelDataManager) {
     42 
     43         final SendChannelStatusRunnable sendChannelStatusRunnable =
     44                 new SendChannelStatusRunnable(channelDataManager, tracker);
     45 
     46         Runnable onStopRunnable =
     47                 new Runnable() {
     48                     @Override
     49                     public void run() {
     50                         sendChannelStatusRunnable.setDbLoadListener(null);
     51                     }
     52                 };
     53         final RecurringRunner recurringRunner =
     54                 new RecurringRunner(
     55                         context,
     56                         SEND_CHANNEL_STATUS_INTERVAL_MS,
     57                         sendChannelStatusRunnable,
     58                         onStopRunnable);
     59 
     60         if (channelDataManager.isDbLoadFinished()) {
     61             sendChannelStatusRunnable.setDbLoadListener(null);
     62             recurringRunner.start();
     63         } else {
     64             // Start the recurring runnable after the channel DB is finished loading.
     65             sendChannelStatusRunnable.setDbLoadListener(
     66                     new ChannelDataManager.Listener() {
     67                         @Override
     68                         public void onLoadFinished() {
     69                             // This is called inside an iterator of Listeners so the remove step is
     70                             // done
     71                             // via a post on the main thread
     72                             new Handler(Looper.getMainLooper())
     73                                     .post(
     74                                             new Runnable() {
     75                                                 @Override
     76                                                 public void run() {
     77                                                     sendChannelStatusRunnable.setDbLoadListener(
     78                                                             null);
     79                                                 }
     80                                             });
     81                             recurringRunner.start();
     82                         }
     83 
     84                         @Override
     85                         public void onChannelListUpdated() {}
     86 
     87                         @Override
     88                         public void onChannelBrowsableChanged() {}
     89                     });
     90         }
     91         return recurringRunner;
     92     }
     93 
     94     private final ChannelDataManager mChannelDataManager;
     95     private final Tracker mTracker;
     96     private ChannelDataManager.Listener mListener;
     97 
     98     private SendChannelStatusRunnable(ChannelDataManager channelDataManager, Tracker tracker) {
     99         mChannelDataManager = channelDataManager;
    100         mTracker = tracker;
    101     }
    102 
    103     @Override
    104     public void run() {
    105         int browsableChannelCount = 0;
    106         List<Channel> channelList = mChannelDataManager.getChannelList();
    107         for (Channel channel : channelList) {
    108             if (channel.isBrowsable()) {
    109                 ++browsableChannelCount;
    110             }
    111         }
    112         mTracker.sendChannelCount(browsableChannelCount, channelList.size());
    113     }
    114 
    115     private void setDbLoadListener(ChannelDataManager.Listener listener) {
    116         if (mListener != null) {
    117             mChannelDataManager.removeListener(mListener);
    118         }
    119         mListener = listener;
    120         if (listener != null) {
    121             mChannelDataManager.addListener(listener);
    122         }
    123     }
    124 }
    125