SetScmTagMojo.java

package org.codehaus.mojo.versions;

import javax.xml.stream.XMLStreamException;

import java.io.IOException;
import java.util.ArrayList;
import java.util.List;
import java.util.stream.Collectors;

import org.apache.maven.artifact.metadata.ArtifactMetadataRetrievalException;
import org.apache.maven.model.Model;
import org.apache.maven.model.Scm;
import org.apache.maven.plugin.MojoExecutionException;
import org.apache.maven.plugin.MojoFailureException;
import org.apache.maven.plugins.annotations.Mojo;
import org.apache.maven.plugins.annotations.Parameter;
import org.codehaus.mojo.versions.api.PomHelper;
import org.codehaus.mojo.versions.rewriting.ModifiedPomXMLEventReader;

import static org.apache.commons.lang3.StringUtils.isBlank;

/**
 * Updates the current project's SCM tag.
 *
 * @author Anton Johansson
 * @since 2.5
 */
@Mojo( name = "set-scm-tag", requiresDirectInvocation = true, aggregator = true, threadSafe = true )
public class SetScmTagMojo extends AbstractVersionsUpdaterMojo
{

    /**
     * The new SCM tag to set.
     *
     * @since 2.5
     */
    @Parameter( property = "newTag" )
    private String newTag;

    /**
     * The new SCM connection property
     *
     * @since 2.12.0
     */
    @Parameter( property = "connection" )
    private String connection;

    /**
     * The new SCM developerConnection property
     *
     * @since 2.12.0
     */
    @Parameter( property = "developerConnection" )
    private String developerConnection;

    /**
     * The new SCM url property
     *
     * @since 2.12.0
     */
    @Parameter( property = "url" )
    private String url;

    /**
     * Called when this mojo is executed.
     *
     * @throws org.apache.maven.plugin.MojoExecutionException when things go wrong.
     * @throws org.apache.maven.plugin.MojoFailureException   when things go wrong.
     */
    @Override
    public void execute() throws MojoExecutionException, MojoFailureException
    {
        if ( isBlank( newTag ) )
        {
            throw new MojoFailureException( "'newTag' cannot be empty" );
        }

        super.execute();
    }

    @Override
    protected void update( ModifiedPomXMLEventReader pom )
            throws MojoExecutionException, MojoFailureException, XMLStreamException, ArtifactMetadataRetrievalException
    {
        try
        {
            Model model = PomHelper.getRawModel( pom );
            Scm scm = model.getScm();
            if ( scm == null )
            {
                throw new MojoFailureException( "No <scm> was present" );
            }
            getLog().info( "Updating from tag " + scm.getTag() + " > " + newTag );

            List<String> failures = new ArrayList<>();
            if ( !PomHelper.setProjectValue( pom, "/project/scm/tag", newTag ) )
            {
                failures.add( "tag: " + newTag );
            }
            if ( !isBlank( connection ) )
            {
                if ( !PomHelper.setProjectValue( pom, "/project/scm/connection", connection ) )
                {
                    failures.add( "connection: " + connection );
                }
            }
            if ( !isBlank( developerConnection ) )
            {
                if ( !PomHelper.setProjectValue( pom, "/project/scm/developerConnection", developerConnection ) )
                {
                    failures.add( "developerConnection: " + developerConnection );
                }
            }
            if ( !isBlank( url ) )
            {
                if ( !PomHelper.setProjectValue( pom, "/project/scm/url", url ) )
                {
                    failures.add( "url: " + url );
                }
            }
            if ( !failures.isEmpty() )
            {
                throw new MojoFailureException( "Could not update one or more SCM elements: " + failures.stream()
                        .collect( Collectors.joining( ", " ) )
                        + ". Please make sure they are present in the original POM. " );
            }
        }
        catch ( IOException e )
        {
            throw new MojoExecutionException( e.getMessage(), e );
        }
    }
}