public void execute()

in src/main/java/org/apache/maven/plugins/artifact/buildinfo/AbstractBuildinfoMojo.java [131:180]
40 lines of code
10 McCabe index (conditional complexity)

    public void execute() throws MojoExecutionException {
        boolean mono = reactorProjects.size() == 1;

        MavenArchiver archiver = new MavenArchiver();
        Date timestamp = archiver.parseOutputTimestamp(outputTimestamp);
        if (timestamp == null) {
            getLog().warn("Reproducible Build not activated by project.build.outputTimestamp property: "
                    + "see https://maven.apache.org/guides/mini/guide-reproducible-builds.html");
        } else {
            if (getLog().isDebugEnabled()) {
                getLog().debug("project.build.outputTimestamp = \"" + outputTimestamp + "\" => "
                        + new SimpleDateFormat("yyyy-MM-dd'T'HH:mm:ssXXX").format(timestamp));
            }

            // check if timestamp well defined in a project from reactor
            boolean parentInReactor = false;
            MavenProject reactorParent = project;
            while (reactorProjects.contains(reactorParent.getParent())) {
                parentInReactor = true;
                reactorParent = reactorParent.getParent();
            }
            String prop = reactorParent.getOriginalModel().getProperties().getProperty("project.build.outputTimestamp");
            if (prop == null) {
                getLog().error("project.build.outputTimestamp property should not be inherited but defined in "
                        + (parentInReactor ? "parent POM from reactor " : "POM ") + reactorParent.getFile());
            }
        }

        if (!mono) {
            // if module skips install and/or deploy
            if (isSkip(project)) {
                getLog().info("Skipping goal because module skips install and/or deploy");
                return;
            }
            // if multi-module build, generate (aggregate) buildinfo only in last module
            MavenProject last = getLastProject();
            if (project != last) {
                skip(last);
                return;
            }
        }

        // generate buildinfo
        Map<Artifact, String> artifacts = generateBuildinfo(mono);
        getLog().info("Saved " + (mono ? "" : "aggregate ") + "info on build to " + buildinfoFile);

        copyAggregateToRoot(buildinfoFile);

        execute(artifacts);
    }