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166 changes: 166 additions & 0 deletions
166
maven-core/src/main/java/org/apache/maven/lifecycle/lfv4/BuildPlan.java
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/* | ||
* Licensed to the Apache Software Foundation (ASF) under one | ||
* or more contributor license agreements. See the NOTICE file | ||
* distributed with this work for additional information | ||
* regarding copyright ownership. The ASF licenses this file | ||
* to you under the Apache License, Version 2.0 (the | ||
* "License"); you may not use this file except in compliance | ||
* with the License. You may obtain a copy of the License at | ||
* | ||
* http://www.apache.org/licenses/LICENSE-2.0 | ||
* | ||
* Unless required by applicable law or agreed to in writing, | ||
* software distributed under the License is distributed on an | ||
* "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY | ||
* KIND, either express or implied. See the License for the | ||
* specific language governing permissions and limitations | ||
* under the License. | ||
*/ | ||
package org.apache.maven.lifecycle.lfv4; | ||
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import java.util.ArrayList; | ||
import java.util.Collections; | ||
import java.util.HashMap; | ||
import java.util.HashSet; | ||
import java.util.LinkedHashMap; | ||
import java.util.List; | ||
import java.util.Map; | ||
import java.util.Optional; | ||
import java.util.Set; | ||
import java.util.function.Function; | ||
import java.util.stream.Collectors; | ||
import java.util.stream.Stream; | ||
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import org.apache.maven.plugin.MojoExecution; | ||
import org.apache.maven.project.MavenProject; | ||
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public class BuildPlan { | ||
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private final Map<MavenProject, Map<String, BuildStep>> plan = new LinkedHashMap<>(); | ||
private final Map<MavenProject, List<MavenProject>> projects; | ||
private final Map<String, String> aliases = new HashMap<>(); | ||
private volatile Set<String> duplicateIds; | ||
private volatile List<BuildStep> sortedNodes; | ||
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BuildPlan() { | ||
this.projects = null; | ||
} | ||
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public BuildPlan(Map<MavenProject, List<MavenProject>> projects) { | ||
this.projects = projects; | ||
} | ||
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public Map<MavenProject, List<MavenProject>> getAllProjects() { | ||
return projects; | ||
} | ||
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public Map<String, String> aliases() { | ||
return aliases; | ||
} | ||
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public Stream<MavenProject> projects() { | ||
return plan.keySet().stream(); | ||
} | ||
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public void addProject(MavenProject project, Map<String, BuildStep> steps) { | ||
plan.put(project, steps); | ||
} | ||
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public void addStep(MavenProject project, String name, BuildStep step) { | ||
plan.get(project).put(name, step); | ||
} | ||
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public Stream<BuildStep> allSteps() { | ||
return plan.values().stream().flatMap(m -> m.values().stream()); | ||
} | ||
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public Stream<BuildStep> steps(MavenProject project) { | ||
return Optional.ofNullable(plan.get(project)) | ||
.map(m -> m.values().stream()) | ||
.orElse(Stream.empty()); | ||
} | ||
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public Optional<BuildStep> step(MavenProject project, String name) { | ||
return Optional.ofNullable(plan.get(project)).map(m -> m.get(name)); | ||
} | ||
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public BuildStep requiredStep(MavenProject project, String name) { | ||
return step(project, name).get(); | ||
} | ||
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// add a follow-up plan to this one | ||
public void then(BuildPlan step) { | ||
step.plan.forEach((k, v) -> plan.merge(k, v, this::merge)); | ||
aliases.putAll(step.aliases); | ||
} | ||
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private Map<String, BuildStep> merge(Map<String, BuildStep> org, Map<String, BuildStep> add) { | ||
// all new phases should be added after the existing ones | ||
List<BuildStep> lasts = | ||
org.values().stream().filter(b -> b.successors.isEmpty()).collect(Collectors.toList()); | ||
List<BuildStep> firsts = | ||
add.values().stream().filter(b -> b.predecessors.isEmpty()).collect(Collectors.toList()); | ||
firsts.stream() | ||
.filter(addNode -> !org.containsKey(addNode.name)) | ||
.forEach(addNode -> lasts.forEach(orgNode -> addNode.executeAfter(orgNode))); | ||
add.forEach((name, node) -> org.merge(name, node, this::merge)); | ||
return org; | ||
} | ||
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private BuildStep merge(BuildStep node1, BuildStep node2) { | ||
node1.predecessors.addAll(node2.predecessors); | ||
node1.successors.addAll(node2.successors); | ||
node2.mojos.forEach((k, v) -> node1.mojos.merge(k, v, this::mergeMojos)); | ||
return node1; | ||
} | ||
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private Map<String, MojoExecution> mergeMojos(Map<String, MojoExecution> l1, Map<String, MojoExecution> l2) { | ||
l2.forEach(l1::putIfAbsent); | ||
return l1; | ||
} | ||
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// gather artifactIds which are not unique so that the respective thread names can be extended with the groupId | ||
public Set<String> duplicateIds() { | ||
if (duplicateIds == null) { | ||
synchronized (this) { | ||
if (duplicateIds == null) { | ||
duplicateIds = projects() | ||
.map(MavenProject::getArtifactId) | ||
.collect(Collectors.groupingBy(Function.identity(), Collectors.counting())) | ||
.entrySet() | ||
.stream() | ||
.filter(p -> p.getValue() > 1) | ||
.map(Map.Entry::getKey) | ||
.collect(Collectors.toSet()); | ||
} | ||
} | ||
} | ||
return duplicateIds; | ||
} | ||
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public List<BuildStep> sortedNodes() { | ||
if (sortedNodes == null) { | ||
synchronized (this) { | ||
if (sortedNodes == null) { | ||
List<BuildStep> sortedNodes = new ArrayList<>(); | ||
Set<BuildStep> visited = new HashSet<>(); | ||
// Visit each unvisited node | ||
allSteps().forEach(node -> visitNode(node, visited, sortedNodes)); | ||
// Reverse the sorted nodes to get the correct order | ||
Collections.reverse(sortedNodes); | ||
this.sortedNodes = sortedNodes; | ||
} | ||
} | ||
} | ||
return sortedNodes; | ||
} | ||
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// Helper method to visit a node | ||
private static void visitNode(BuildStep node, Set<BuildStep> visited, List<BuildStep> sortedNodes) { | ||
if (visited.add(node)) { | ||
// For each successor of the current node, visit unvisited successors | ||
node.successors.forEach(successor -> visitNode(successor, visited, sortedNodes)); | ||
sortedNodes.add(node); | ||
} | ||
} | ||
} |
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