private ModuleDescriptor getModuleDescriptor()

in src/main/java/org/apache/maven/plugins/dependency/resolvers/ResolveDependenciesMojo.java [277:335]
46 lines of code
11 McCabe index (conditional complexity)

    private ModuleDescriptor getModuleDescriptor(File artifactFile) {
        ModuleDescriptor moduleDescriptor = null;
        try {
            // Use Java9 code to get moduleName, don't try to do it better with own implementation
            Class<?> moduleFinderClass = Class.forName("java.lang.module.ModuleFinder");

            java.nio.file.Path path = artifactFile.toPath();

            Method ofMethod = moduleFinderClass.getMethod("of", java.nio.file.Path[].class);
            Object moduleFinderInstance = ofMethod.invoke(null, new Object[] {new java.nio.file.Path[] {path}});

            Method findAllMethod = moduleFinderClass.getMethod("findAll");
            Set<Object> moduleReferences = (Set<Object>) findAllMethod.invoke(moduleFinderInstance);

            // moduleReferences can be empty when referring to target/classes without module-info.class
            if (!moduleReferences.isEmpty()) {
                Object moduleReference = moduleReferences.iterator().next();
                Method descriptorMethod = moduleReference.getClass().getMethod("descriptor");
                Object moduleDescriptorInstance = descriptorMethod.invoke(moduleReference);

                Method nameMethod = moduleDescriptorInstance.getClass().getMethod("name");
                String name = (String) nameMethod.invoke(moduleDescriptorInstance);

                moduleDescriptor = new ModuleDescriptor();
                moduleDescriptor.name = name;

                Method isAutomaticMethod = moduleDescriptorInstance.getClass().getMethod("isAutomatic");
                moduleDescriptor.automatic = (Boolean) isAutomaticMethod.invoke(moduleDescriptorInstance);

                if (moduleDescriptor.automatic) {
                    if (artifactFile.isFile()) {
                        try (JarFile jarFile = new JarFile(artifactFile)) {
                            Manifest manifest = jarFile.getManifest();

                            if (manifest != null
                                    && manifest.getMainAttributes().getValue("Automatic-Module-Name") != null) {
                                moduleDescriptor.moduleNameSource = "MANIFEST";
                            } else {
                                moduleDescriptor.moduleNameSource = "FILENAME";
                            }
                        } catch (IOException e) {
                            // noop
                        }
                    }
                }
            }
        } catch (ClassNotFoundException | SecurityException | IllegalAccessException | IllegalArgumentException e) {
            // do nothing
        } catch (NoSuchMethodException e) {
            getLog().warn(e);
        } catch (InvocationTargetException e) {
            Throwable cause = e.getCause();
            while (cause.getCause() != null) {
                cause = cause.getCause();
            }
            getLog().info("Can't extract module name from " + artifactFile.getName() + ": " + cause.getMessage());
        }
        return moduleDescriptor;
    }