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TrueSkrillorTrueSkrillor
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feat: Initial commit
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‎.gitignore‎

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target/
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!.mvn/wrapper/maven-wrapper.jar
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!**/src/main/**/target/
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!**/src/test/**/target/
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### IntelliJ IDEA ###
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.idea/modules.xml
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.idea/jarRepositories.xml
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.idea/compiler.xml
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.idea/libraries/
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*.iws
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*.iml
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*.ipr
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.idea
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### Eclipse ###
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.apt_generated
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.classpath
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.factorypath
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.project
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.settings
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.springBeans
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.sts4-cache
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### NetBeans ###
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/nbproject/private/
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/nbbuild/
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/dist/
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/nbdist/
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/.nb-gradle/
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build/
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!**/src/main/**/build/
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!**/src/test/**/build/
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### VS Code ###
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.vscode/
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### Mac OS ###
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.DS_Store

‎pom.xml‎

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<?xml version="1.0" encoding="UTF-8"?>
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<project xmlns="http://maven.apache.org/POM/4.0.0"
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xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
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xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
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<modelVersion>4.0.0</modelVersion>
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<groupId>de.rub.nds</groupId>
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<artifactId>relaxed-dependency-convergence-rule</artifactId>
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<version>1.0-SNAPSHOT</version>
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<name>Relaxed Dependency Convergence Rule</name>
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<description>A custom maven enforcer rule that works similar to dependencyConvergence but is limited to contradicting major versions</description>
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<properties>
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<api.version>3.5.0</api.version>
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<mavenVersion>3.6.3</mavenVersion>
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<maven.compiler.source>11</maven.compiler.source>
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<maven.compiler.target>11</maven.compiler.target>
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<project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
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</properties>
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<dependencies>
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<dependency>
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<groupId>org.apache.maven.enforcer</groupId>
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<artifactId>enforcer-api</artifactId>
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<version>${api.version}</version>
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<scope>provided</scope>
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</dependency>
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<dependency>
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<groupId>org.apache.maven</groupId>
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<artifactId>maven-core</artifactId>
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<version>${mavenVersion}</version>
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<scope>provided</scope>
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</dependency>
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<dependency>
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<groupId>javax.inject</groupId>
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<artifactId>javax.inject</artifactId>
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<version>1</version>
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<scope>provided</scope>
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</dependency>
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<dependency>
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<groupId>org.apache.maven.shared</groupId>
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<artifactId>maven-dependency-tree</artifactId>
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<version>3.3.0</version>
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</dependency>
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</dependencies>
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<build>
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<plugins>
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<plugin>
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<!-- generate index of project components -->
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<groupId>org.eclipse.sisu</groupId>
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<artifactId>sisu-maven-plugin</artifactId>
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<version>0.9.0.M1</version>
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<executions>
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<execution>
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<goals>
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<goal>main-index</goal>
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</goals>
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</execution>
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</executions>
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</plugin>
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</plugins>
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</build>
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</project>

‎src/main/java/de/rub/nds/enforcer/rules/dependency/RelaxedDependencyConvergenceRule.java‎

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package de.rub.nds.enforcer.rules.dependency;
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import org.apache.maven.artifact.Artifact;
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import org.apache.maven.enforcer.rule.api.AbstractEnforcerRule;
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import org.apache.maven.enforcer.rule.api.EnforcerRuleError;
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import org.apache.maven.enforcer.rule.api.EnforcerRuleException;
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import org.apache.maven.execution.MavenSession;
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import org.apache.maven.project.DefaultProjectBuildingRequest;
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import org.apache.maven.project.MavenProject;
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import org.apache.maven.project.ProjectBuildingRequest;
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import org.apache.maven.rtinfo.RuntimeInformation;
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import org.apache.maven.shared.dependency.graph.*;
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import org.apache.maven.shared.dependency.graph.traversal.CollectingDependencyNodeVisitor;
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import javax.inject.Inject;
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import javax.inject.Named;
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import java.util.*;
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@Named("relaxedDependencyConvergence")
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public class RelaxedDependencyConvergenceRule extends AbstractEnforcerRule {
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@Inject
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private MavenProject project;
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@Inject
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private MavenSession session;
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@Inject
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private DependencyCollectorBuilder dependencyCollectorBuilder;
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@Override
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public void execute() throws EnforcerRuleException {
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// Collect major versions of all dependencies
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Map<String, Set<String>> majorVersions = new HashMap<>();
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ProjectBuildingRequest buildingRequest = new DefaultProjectBuildingRequest(session.getProjectBuildingRequest());
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buildingRequest.setProject(project);
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try {
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DependencyNode rootNode = dependencyCollectorBuilder.collectDependencyGraph(buildingRequest, null);
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collectMajorVersions(rootNode, majorVersions);
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} catch (DependencyCollectorBuilderException e) {
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throw new EnforcerRuleError(e);
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}
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// Check for major version conflicts (i.e., set size > 1)
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List<String> conflicts = new ArrayList<>();
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for (Map.Entry<String, Set<String>> entry : majorVersions.entrySet()) {
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if (entry.getValue().size() > 1) {
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conflicts.add(entry.getKey() + " -> major versions: " + entry.getValue());
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}
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}
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// Throw if at least one major version conflict has been detected
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if (!conflicts.isEmpty()) {
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throw new EnforcerRuleException("Major version conflicts detected:\n" + String.join("\n", conflicts));
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}
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}
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private void collectMajorVersions(DependencyNode rootNode, Map<String, Set<String>> versions) {
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CollectingDependencyNodeVisitor visitor = new CollectingDependencyNodeVisitor();
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rootNode.accept(visitor);
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for (DependencyNode node : visitor.getNodes()) {
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Artifact artifact = node.getArtifact();
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if (artifact == null) {
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continue;
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}
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String key = artifact.getGroupId() + ":" + artifact.getArtifactId();
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String major;
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if (node.getPremanagedVersion() != null && !isVersionRange(node.getPremanagedVersion())) {
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major = extractMajorVersion(node.getPremanagedVersion());
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} else {
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major = extractMajorVersion(artifact.getVersion());
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}
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if (major != null) {
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versions.computeIfAbsent(key, k -> new HashSet<>()).add(major);
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}
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}
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}
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private String extractMajorVersion(String version) {
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String baseVersion = version.split("-")[0];
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String[] parts = baseVersion.split("\\.");
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return parts.length > 0 ? parts[0] : version;
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}
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private boolean isVersionRange(String version) {
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return version.contains("[") || version.contains("]") || version.contains("(") || version.contains(")");
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}
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@Override
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public String toString() {
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return "RelaxedDependencyConvergenceRule{}";
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}
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}

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