| /* |
| * 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.plugin.internal; |
| |
| import javax.inject.Inject; |
| import javax.inject.Named; |
| import javax.inject.Singleton; |
| |
| import org.apache.maven.plugin.MavenPluginPrerequisitesChecker; |
| import org.apache.maven.plugin.descriptor.PluginDescriptor; |
| import org.eclipse.aether.version.InvalidVersionSpecificationException; |
| import org.eclipse.aether.version.Version; |
| import org.eclipse.aether.version.VersionConstraint; |
| import org.eclipse.aether.version.VersionScheme; |
| |
| @Named |
| @Singleton |
| public class MavenPluginJavaPrerequisiteChecker implements MavenPluginPrerequisitesChecker { |
| |
| private final VersionScheme versionScheme; |
| |
| @Inject |
| public MavenPluginJavaPrerequisiteChecker(final VersionScheme versionScheme) { |
| this.versionScheme = versionScheme; |
| } |
| |
| @Override |
| public void accept(PluginDescriptor pluginDescriptor) { |
| String requiredJavaVersion = pluginDescriptor.getRequiredJavaVersion(); |
| if (requiredJavaVersion != null && !requiredJavaVersion.isEmpty()) { |
| String currentJavaVersion = System.getProperty("java.version"); |
| if (!matchesVersion(requiredJavaVersion, currentJavaVersion)) { |
| throw new IllegalStateException("Required Java version " + requiredJavaVersion |
| + " is not met by current version: " + currentJavaVersion); |
| } |
| } |
| } |
| |
| boolean matchesVersion(String requiredVersion, String currentVersion) { |
| VersionConstraint constraint; |
| try { |
| constraint = versionScheme.parseVersionConstraint(requiredVersion); |
| } catch (InvalidVersionSpecificationException e) { |
| throw new IllegalArgumentException("Invalid 'requiredJavaVersion' given in plugin descriptor", e); |
| } |
| Version current; |
| try { |
| current = versionScheme.parseVersion(currentVersion); |
| } catch (InvalidVersionSpecificationException e) { |
| throw new IllegalStateException("Could not parse current Java version", e); |
| } |
| if (constraint.getRange() == null) { |
| return constraint.getVersion().compareTo(current) <= 0; |
| } |
| return constraint.containsVersion(current); |
| } |
| } |