* Maven Upgrade Tool Goals and Strategies.
 *
 * <p>This package contains the implementation of the Maven upgrade tool (mvnup) that helps
 * upgrade Maven projects to be compatible with Maven 4. The tool is organized around
 * a goal-based architecture with pluggable upgrade strategies.</p>
 *
 * <h2>Architecture Overview</h2>
 *
 * <h3>Goals</h3>
 * <ul>

/**
 * Exception which occurs to indicate that the plugin cannot be initialized due
 * to some deeper problem with Plexus. Context information includes the groupId,
 * artifactId, and version for the plugin; at times, the goal name for which
 * execution failed; a message detailing the problem; the ClassRealm used to
 * look up the plugin; and the Plexus exception that caused this error.
 *
 *
 */

public class EncryptContext extends LookupContext {
    public EncryptContext(InvokerRequest invokerRequest, EncryptOptions encryptOptions) {
        super(invokerRequest, true, encryptOptions);
    }

    public Map<String, Goal> goals;

    public List<AttributedString> header;
    public AttributedStyle style;
    public LineReader reader;

    public void addInHeader(String text) {
        addInHeader(AttributedStyle.DEFAULT, text);

    private Plugin plugin;

    public PluginNotFoundException(Plugin plugin, ArtifactNotFoundException e) {
        super(
                "Plugin could not be found - check that the goal name is correct: " + e.getMessage(),
                e.getGroupId(),
                e.getArtifactId(),
                e.getVersion(),
                "maven-plugin",
                null,

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. */ import org.apache.maven.plugin.AbstractMojo; /** * Does nothing. * * @goal clean * * @author Benjamin Bentmann */ public class ItMojo extends AbstractMojo { public void execute() { } } META-INF/maven/org.apache.maven.plugins/maven-clean-plugin/pom.xml 4.0.0 org.apache.maven.plugins maven-clean-plugin 0.1 maven-plugin Maven...

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. */ import org.apache.maven.plugin.AbstractMojo; /** * Does nothing. * * @goal jar * @requiresDependencyRe runtime * * @author Benjamin Bentmann */ public class ItMojo extends AbstractMojo { public void execute() { } } META-INF/maven/org.apache.maven.plugins/maven-jar-plugin/pom.xml 4.0.0 org.apache.maven.plugins maven-jar-plugin...

        }
    }

    private String logDeprecatedMojo(MojoDescriptor mojoDescriptor) {
        return messageBuilderFactory
                .builder()
                .warning("Goal '")
                .warning(mojoDescriptor.getGoal())
                .warning("' is deprecated: ")
                .warning(mojoDescriptor.getDeprecated())
                .toString();
    }

import static org.apache.maven.cling.invoker.mvnenc.EncryptInvoker.CANCELED;
import static org.apache.maven.cling.invoker.mvnenc.EncryptInvoker.OK;

/**
 * The "init" goal.
 */
@Singleton
@Named("init")
public class Init extends InteractiveGoalSupport {
    private static final String NONE = "__none__";

    @Inject

- version range violation
- circular dependency
- artifact missing
- artifact retrieval exception
- md5 checksum doesn't match for local artifact, need to redownload this
- POM doesn't exist for a goal that requires one
- parent POM missing (in both the repository + relative path)
- component not found

Plugins:
- plugin metadata missing
- plugin metadata retrieval problem
- plugin artifact missing

            MojoExecution execution,
            MavenProject project,
            Throwable cause) {
        MessageBuilder buffer = messageBuilderFactory.builder(256);

        buffer.a("Failed to execute goal");

        if (execution != null) {
            buffer.a(' ');
            buffer.mojo(execution.getGroupId()
                    + ':'
                    + execution.getArtifactId()
                    + ':'