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.voicemail.impl.scheduling; 18 19 import android.annotation.TargetApi; 20 import android.content.BroadcastReceiver; 21 import android.content.Context; 22 import android.content.Intent; 23 import android.os.Build.VERSION_CODES; 24 import android.os.Bundle; 25 import com.android.voicemail.impl.VvmLog; 26 import java.util.ArrayList; 27 import java.util.List; 28 29 /** 30 * BroadcastReceiver to queue and run {@link Task} with the {@link android.app.job.JobScheduler}. A 31 * task is queued using a explicit broadcast to this receiver. The intent should contain enough 32 * information in {@link Intent#getExtras()} to construct the task (see {@link 33 * Tasks#createIntent(Context, Class)}). The task will be queued directly in {@link TaskExecutor} if 34 * it is already running, or in {@link TaskSchedulerJobService} if not. 35 */ 36 @TargetApi(VERSION_CODES.O) 37 public class TaskReceiver extends BroadcastReceiver { 38 39 private static final String TAG = "VvmTaskReceiver"; 40 41 private static final List<Intent> deferredBroadcasts = new ArrayList<>(); 42 43 /** 44 * When {@link TaskExecutor#isTerminating()} is {@code true}, newly added tasks will be deferred 45 * to allow the TaskExecutor to terminate properly. After termination is completed this should be 46 * called to add the tasks again. 47 */ resendDeferredBroadcasts(Context context)48 public static void resendDeferredBroadcasts(Context context) { 49 for (Intent intent : deferredBroadcasts) { 50 context.sendBroadcast(intent); 51 } 52 deferredBroadcasts.clear(); 53 } 54 55 @Override onReceive(Context context, Intent intent)56 public void onReceive(Context context, Intent intent) { 57 if (intent == null) { 58 VvmLog.w(TAG, "null intent received"); 59 return; 60 } 61 VvmLog.i(TAG, "task received"); 62 TaskExecutor taskExecutor = TaskExecutor.getRunningInstance(); 63 if (taskExecutor != null) { 64 VvmLog.i(TAG, "TaskExecutor already running"); 65 if (taskExecutor.isTerminating()) { 66 // The current taskExecutor and cannot do anything and a new job cannot be scheduled. Defer 67 // the task until a new job can be scheduled. 68 VvmLog.w(TAG, "TaskExecutor is terminating, bouncing task"); 69 deferredBroadcasts.add(intent); 70 return; 71 } 72 Task task = Tasks.createTask(context.getApplicationContext(), intent.getExtras()); 73 taskExecutor.addTask(task); 74 } else { 75 VvmLog.i(TAG, "scheduling new job"); 76 List<Bundle> taskList = new ArrayList<>(); 77 taskList.add(intent.getExtras()); 78 TaskSchedulerJobService.scheduleJob(context.getApplicationContext(), taskList, 0, true); 79 } 80 } 81 } 82