public void execute()

in nbm-maven-plugin/src/main/java/org/apache/netbeans/nbm/CreateNbmMojo.java [199:339]
131 lines of code
35 McCabe index (conditional complexity)

    public void execute()
            throws MojoExecutionException, MojoFailureException {
        if (skipNbm) {
            getLog().info("Skipping generation of NBM file.");
            return;
        }

        if ("pom".equals(project.getPackaging())) {
            getLog().info(
                    "Skipping " + project.getId() + ", no nbm:nbm execution for 'pom' packaging");
            return;
        }
        super.execute();

        // 3. generate nbm
        File nbmFile = new File(nbmBuildDir, finalName + ".nbm");
        MakeNBM nbmTask = (MakeNBM) antProject.createTask("makenbm");
        nbmTask.setFile(nbmFile);
        nbmTask.setProductDir(clusterDir);

        nbmTask.setModule("modules" + File.separator + moduleJarName + ".jar");
        boolean reqRestart = requiresRestart;
        if (!reqRestart && module.isRequiresRestart()) {
            reqRestart = module.isRequiresRestart();
            getLog().warn("Module descriptor's requiresRestart field is deprecated, use plugin's configuration in pom.xml");
        }
        nbmTask.setNeedsrestart(Boolean.toString(reqRestart));
        String moduleAuthor = author;
        if (module.getAuthor() != null) {
            moduleAuthor = module.getAuthor();
            getLog().warn("Module descriptor's author field is deprecated, use plugin's configuration in pom.xml");
        }
        nbmTask.setModuleauthor(moduleAuthor);
        if (keystore != null && keystorealias != null && keystorepassword != null) {
            File ks = new File(keystore);
            if (!ks.exists()) {
                getLog().warn("Cannot find keystore file at " + ks.getAbsolutePath());
            } else {
                Signature sig = nbmTask.createSignature();
                sig.setKeystore(ks);
                sig.setAlias(keystorealias);
                sig.setStorepass(keystorepassword);
                if (tsaurl != null) {
                    sig.setTsaurl(tsaurl);
                }
                if (tsacert != null) {
                    sig.setTsacert(tsacert);
                }
                getLog().debug("Setup the Ant task to sign the NBM file.");
            }
        } else if (keystore != null || keystorepassword != null || keystorealias != null) {
            getLog().warn(
                    "If you want to sign the nbm file, you need to define all three keystore related parameters.");
        }
        String licName = licenseName;
        File licFile = licenseFile;
        if (module.getLicenseName() != null) {
            licName = module.getLicenseName();
            getLog().warn("Module descriptor's licenseName field is deprecated, use plugin's configuration in pom.xml");
        }
        if (module.getLicenseFile() != null) {
            File lf = new File(project.getBasedir(), module.getLicenseFile());
            licFile = lf;
            getLog().warn("Module descriptor's licenseFile field is deprecated, use plugin's configuration in pom.xml");

        }
        if (licName != null && licFile != null) {
            if (!licFile.exists() || !licFile.isFile()) {
                getLog().warn("Cannot find license file at " + licFile.getAbsolutePath());
            } else {
                Blurb lb = nbmTask.createLicense();
                lb.setFile(licFile);
                lb.addText(licName);
            }
        } else if (licName != null || licFile != null) {
            getLog().warn(
                    "To set license for the nbm, you need to specify both licenseName and licenseFile parameters.");
        } else {
            Blurb lb = nbmTask.createLicense();
            lb.addText(createDefaultLicenseHeader());
            lb.addText(createDefaultLicenseText());
        }
        String hpUrl = homePageUrl;
        if (module.getHomepageUrl() != null) {
            getLog().warn("Module descriptor's homePageUrl field is deprecated, use plugin's configuration in pom.xml");
            hpUrl = module.getHomepageUrl();
        }
        if (hpUrl != null) {
            nbmTask.setHomepage(hpUrl);
        }
        String distribUrl = distributionUrl;
        if (module.getDistributionUrl() != null) {
            distribUrl = module.getDistributionUrl();
            getLog().warn("Module descriptor's distributionUrl field is deprecated, use plugin's configuration in pom.xml");
        }
        if (distribUrl != null) {
            ArtifactRepository distRepository = CreateUpdateSiteMojo.getDeploymentRepository(distribUrl, layouts);
            String dist = null;
            if (distRepository == null) {
                if (!distribUrl.contains("::")) {
                    dist = distribUrl + (distribUrl.endsWith("/") ? "" : "/") + nbmFile.getName();
                }
            } else {
                Artifact art = artifactFactory.createArtifact(
                        project.getGroupId(), project.getArtifactId(),
                        project.getVersion(), null, "nbm-file");

                dist = distRepository.getUrl() + (distRepository.getUrl().endsWith("/") ? "" : "/") + distRepository.pathOf(art);

            }
            nbmTask.setDistribution(dist);
        } else {
            nbmTask.setDistribution(nbmFile.getName());
        }
        if (!"extra".equals(cluster)) {
            nbmTask.setTargetcluster(cluster);
        }
        //MNBMODULE-217 avoid using the static DATE_FORMAT variable in MavenNBM.java (in ant harness)
        nbmTask.setReleasedate(DATE_FORMAT.format(getOutputTimestampOrNow(project)));
        Path updaterPath = nbmTask.createUpdaterJar();
        try {
            // locate a public class from updater to get the path
            URL url = org.netbeans.updater.XMLUtil.class.getProtectionDomain().getCodeSource().getLocation();
            updaterPath.setPath(url.getFile());
        } catch (BuildException e) {
            // we could continue without having updater
            getLog().warn("Could not find updater.jar");
        }
        try {
            nbmTask.execute();
        } catch (BuildException e) {
            throw new MojoExecutionException("Cannot Generate nbm file:" + e.getMessage(), e);
        }
        try {
            File nbmfile = new File(buildDir, nbmFile.getName());
            FileUtils.getFileUtils().copyFile(nbmFile, nbmfile);
            projectHelper.attachArtifact(project, "nbm-file", null, nbmfile);
        } catch (IOException ex) {
            throw new MojoExecutionException("Cannot copy nbm to build directory", ex);
        }
    }