1 /** 2 * Copyright 2017 Google Inc. All Rights Reserved. 3 * 4 * Licensed under the Apache License, Version 2.0 (the "License"); you may not use this file 5 * except in compliance with the License. You may obtain a copy of the License at 6 * 7 * http://www.apache.org/licenses/LICENSE-2.0 8 * 9 * Unless required by applicable law or agreed to in writing, software distributed under the 10 * License is distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either 11 * express or implied. See the License for the specific language governing permissions and 12 * limitations under the License. 13 */ 14 package com.android.vts.util; 15 16 import com.google.appengine.api.taskqueue.Queue; 17 import com.google.appengine.api.taskqueue.TaskOptions; 18 import java.util.ArrayList; 19 import java.util.List; 20 import java.util.logging.Level; 21 import java.util.logging.Logger; 22 23 /** TaskQueueHelper, a helper class for interacting with App Engine Task Queue API. */ 24 public class TaskQueueHelper { 25 protected static final Logger logger = Logger.getLogger(TaskQueueHelper.class.getName()); 26 public static final int MAX_BATCH_ADD_SIZE = 100; 27 28 /** 29 * Add the list of tasks to the provided queue. 30 * 31 * @param queue The task queue in which to insert the tasks. 32 * @param tasks The list of tasks to add. 33 */ addToQueue(Queue queue, List<TaskOptions> tasks)34 public static void addToQueue(Queue queue, List<TaskOptions> tasks) { 35 List<TaskOptions> puts = new ArrayList<>(); 36 for (TaskOptions task : tasks) { 37 puts.add(task); 38 if (puts.size() == MAX_BATCH_ADD_SIZE) { 39 queue.addAsync(puts); 40 puts = new ArrayList<>(); 41 } else if (puts.size() > MAX_BATCH_ADD_SIZE) { 42 logger.log(Level.SEVERE, "Too many tasks batched in the task queue API."); 43 return; 44 } 45 } 46 if (puts.size() > 0) { 47 queue.addAsync(puts); 48 } 49 } 50 } 51