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.phone.vvm.omtp.scheduling; 18 19 import android.content.Intent; 20 21 import com.android.phone.vvm.omtp.VvmLog; 22 23 /** 24 * A task with Postpone policy will not be executed immediately. It will wait for a while and if a 25 * duplicated task is queued during the duration, the task will be postponed further. The task will 26 * only be executed if no new task was added in postponeMillis. Useful to batch small tasks in quick 27 * succession together. 28 */ 29 public class PostponePolicy implements Policy { 30 31 private static final String TAG = "PostponePolicy"; 32 33 private final int mPostponeMillis; 34 private BaseTask mTask; 35 PostponePolicy(int postponeMillis)36 public PostponePolicy(int postponeMillis) { 37 mPostponeMillis = postponeMillis; 38 } 39 40 @Override onCreate(BaseTask task, Intent intent, int flags, int startId)41 public void onCreate(BaseTask task, Intent intent, int flags, int startId) { 42 mTask = task; 43 mTask.setExecutionTime(mTask.getTimeMillis() + mPostponeMillis); 44 } 45 46 @Override onBeforeExecute()47 public void onBeforeExecute() { 48 // Do nothing 49 } 50 51 @Override onCompleted()52 public void onCompleted() { 53 // Do nothing 54 } 55 56 @Override onFail()57 public void onFail() { 58 // Do nothing 59 } 60 61 @Override onDuplicatedTaskAdded()62 public void onDuplicatedTaskAdded() { 63 if (mTask.hasStarted()) { 64 return; 65 } 66 VvmLog.d(TAG, "postponing " + mTask); 67 mTask.setExecutionTime(mTask.getTimeMillis() + mPostponeMillis); 68 } 69 } 70