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.voicemail.impl.scheduling; 18 19 import android.os.Bundle; 20 import com.android.voicemail.impl.VvmLog; 21 22 /** 23 * A task with Postpone policy will not be executed immediately. It will wait for a while and if a 24 * duplicated task is queued during the duration, the task will be postponed further. The task will 25 * only be executed if no new task was added in postponeMillis. Useful to batch small tasks in quick 26 * succession together. 27 */ 28 public class PostponePolicy implements Policy { 29 30 private static final String TAG = "PostponePolicy"; 31 32 private final int mPostponeMillis; 33 private BaseTask mTask; 34 35 public PostponePolicy(int postponeMillis) { 36 mPostponeMillis = postponeMillis; 37 } 38 39 @Override 40 public void onCreate(BaseTask task, Bundle extras) { 41 mTask = task; 42 mTask.setExecutionTime(mTask.getTimeMillis() + mPostponeMillis); 43 } 44 45 @Override 46 public void onBeforeExecute() { 47 // Do nothing 48 } 49 50 @Override 51 public void onCompleted() { 52 // Do nothing 53 } 54 55 @Override 56 public void onFail() { 57 // Do nothing 58 } 59 60 @Override 61 public void onDuplicatedTaskAdded() { 62 if (mTask.hasStarted()) { 63 return; 64 } 65 VvmLog.i(TAG, "postponing " + mTask); 66 mTask.setExecutionTime(mTask.getTimeMillis() + mPostponeMillis); 67 } 68 } 69
