private File createSubsystemBaseFile()

in src/main/java/org/apache/sling/maven/slingstart/PreparePackageMojo.java [345:398]
41 lines of code
8 McCabe index (conditional complexity)

    private File createSubsystemBaseFile(Feature feature, AtomicInteger startLevelHolder) throws MojoExecutionException {
        File subsystemFile = new File(getTmpDir(), feature.getName() + ".subsystem-base");
        if (subsystemFile.exists()) {
            // This subsystem has already been created
            // TODO is there a better way to avoid calling this multiple times?
            return null;
        }

        startLevelHolder.set(-1);

        // The runmodes information has to be the first item in the archive so that we always have it available when the
        // archive is being processed. For this reason a Jar file is used here as it's guaranteed to store the manifest
        // first.
        Manifest runModesManifest = getRunModesManifest(feature);

        getLog().info("Creating subsystem base file: " + subsystemFile.getName());
        boolean created = subsystemFile.getParentFile().mkdirs();
        if ( !created ) {
            throw new MojoExecutionException("Failed creating " + subsystemFile.getParentFile().getAbsolutePath());
        }

        try (JarOutputStream os = new JarOutputStream(new FileOutputStream(subsystemFile), runModesManifest)) {
            Map<String, Integer> bsnStartOrderMap = new HashMap<>();

            for (RunMode rm : feature.getRunModes()) {
                for (ArtifactGroup ag : rm.getArtifactGroups()) {
                    int startOrder = ag.getStartLevel(); // For subsystems the start level on the artifact group is used as start order.

                    for (org.apache.sling.provisioning.model.Artifact a : ag) {
                        Artifact artifact = ModelUtils.getArtifact(this.project, this.mavenSession, this.artifactHandlerManager, this.resolver,
                                a.getGroupId(), a.getArtifactId(), a.getVersion(), a.getType(), a.getClassifier());
                        File artifactFile = artifact.getFile();
                        String entryName = getEntryName(artifactFile, startOrder);

                        ZipEntry ze = new ZipEntry(entryName);
                        try {
                            os.putNextEntry(ze);
                            Files.copy(artifactFile.toPath(), os);
                        } finally {
                            os.closeEntry();
                        }
                    }
                }
            }

            int sl = createSubsystemManifest(feature, bsnStartOrderMap, os);
            if (sl != -1)
                startLevelHolder.set(sl);
            addReadme(os);
        } catch (IOException ioe) {
            throw new MojoExecutionException("Problem creating subsystem .esa file " + subsystemFile, ioe);
        }
        return subsystemFile;
    }