1 package org.apache.maven.continuum.buildqueue.evaluator; 2 3 /* 4 * Licensed to the Apache Software Foundation (ASF) under one 5 * or more contributor license agreements. See the NOTICE file 6 * distributed with this work for additional information 7 * regarding copyright ownership. The ASF licenses this file 8 * to you under the Apache License, Version 2.0 (the 9 * "License"); you may not use this file except in compliance 10 * with the License. You may obtain a copy of the License at 11 * 12 * http://www.apache.org/licenses/LICENSE-2.0 13 * 14 * Unless required by applicable law or agreed to in writing, 15 * software distributed under the License is distributed on an 16 * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY 17 * KIND, either express or implied. See the License for the 18 * specific language governing permissions and limitations 19 * under the License. 20 */ 21 22 import org.apache.continuum.taskqueue.BuildProjectTask; 23 import org.apache.maven.continuum.project.ContinuumProjectState; 24 import org.codehaus.plexus.taskqueue.TaskViabilityEvaluator; 25 26 import java.util.ArrayList; 27 import java.util.Collection; 28 import java.util.HashMap; 29 import java.util.List; 30 import java.util.Map; 31 32 /** 33 * @author <a href="mailto:trygvis@inamo.no">Trygve Laugstøl</a> 34 * @version $Id: BuildProjectTaskViabilityEvaluator.java 1372260 2012-08-13 04:29:09Z brett $ 35 */ 36 public class BuildProjectTaskViabilityEvaluator 37 implements TaskViabilityEvaluator 38 { 39 /** 40 * @plexus.configuration 41 */ 42 private long requiredBuildInterval; 43 44 // ---------------------------------------------------------------------- 45 // TaskViabilityEvaluator Implementation 46 // ---------------------------------------------------------------------- 47 48 /** 49 * Removes duplicate tasks from the list. A duplicate task is one with the same 50 * build definition and that's scheduled within the required build interval. 51 * <p/> 52 * <p/> 53 * ∀ <sub>t1, t2 ∈ tasks</sub> [ t1 ≠ t2 ∧ t2.buildDefinition = t2.buildDefinition]: 54 * if ( t2.timestamp - t1.timestamp < requiredBuildInterval ) remove( t2 ). 55 * </p> 56 * 57 * @param tasks A list of queued tasks to evaluate 58 * @return a list of tasks with duplicates removed 59 */ 60 public Collection<BuildProjectTask> evaluate( Collection tasks ) 61 { 62 // ---------------------------------------------------------------------- 63 // This code makes a Map with Lists with one list per project. For each 64 // task in the list it puts it in the list for the project that's 65 // requested for a build. Then all each of the lists with tasks is 66 // checked for validity and a list of tasks to remove is returned. 67 // ---------------------------------------------------------------------- 68 69 Map<Integer, List<BuildProjectTask>> projects = new HashMap<Integer, List<BuildProjectTask>>(); 70 71 for ( BuildProjectTask task : (Collection<BuildProjectTask>) tasks ) 72 { 73 int key = task.getProjectId(); 74 75 List<BuildProjectTask> projectTasks = projects.get( key ); 76 77 if ( projectTasks == null ) 78 { 79 projectTasks = new ArrayList<BuildProjectTask>(); 80 81 projects.put( key, projectTasks ); 82 } 83 84 projectTasks.add( task ); 85 } 86 87 List<BuildProjectTask> toBeRemoved = new ArrayList<BuildProjectTask>(); 88 89 for ( List<BuildProjectTask> projectTasks : projects.values() ) 90 { 91 toBeRemoved.addAll( checkTasks( projectTasks ) ); 92 } 93 94 return toBeRemoved; 95 } 96 97 // ---------------------------------------------------------------------- 98 // 99 // ---------------------------------------------------------------------- 100 101 private List<BuildProjectTask> checkTasks( List<BuildProjectTask> list ) 102 { 103 List<BuildProjectTask> toBeRemoved = new ArrayList<BuildProjectTask>(); 104 105 for ( BuildProjectTask buildProjectTask : list ) 106 { 107 for ( BuildProjectTask task : list ) 108 { 109 // check if it's the same task 110 if ( buildProjectTask == task || 111 buildProjectTask.getBuildDefinitionId() != task.getBuildDefinitionId() ) 112 { 113 continue; 114 } 115 116 // ---------------------------------------------------------------------- 117 // If this build is forces, don't remove it 118 // ---------------------------------------------------------------------- 119 120 if ( task.getBuildTrigger().getTrigger() == ContinuumProjectState.TRIGGER_FORCED ) 121 { 122 continue; 123 } 124 125 // ---------------------------------------------------------------------- 126 // 127 // ---------------------------------------------------------------------- 128 129 long interval = task.getTimestamp() - buildProjectTask.getTimestamp(); 130 131 if ( interval < requiredBuildInterval ) 132 { 133 toBeRemoved.add( buildProjectTask ); 134 } 135 } 136 } 137 138 return toBeRemoved; 139 } 140 }