Examples with KubernetesModelProcessor io.fabric8.kubernetes.generator.annotation.KubernetesModelProcessor used on opensource projects

Example 1 with KubernetesModelProcessor

use of io.fabric8.kubernetes.generator.annotation.KubernetesModelProcessor in project fabric8 by fabric8io.

the class KubernetesModelProcessorProcessor method process.

@Override
public boolean process(Set<? extends TypeElement> annotations, RoundEnvironment roundEnv) {
    CompilationTaskFactory compilationTaskFactory = new CompilationTaskFactory(processingEnv);
    Set<TypeElement> processors = new HashSet<>();
    // 1st pass collect classes to compile.
    for (Element element : roundEnv.getElementsAnnotatedWith(KubernetesModelProcessor.class)) {
        processors.add(getClassElement(element));
    }
    if (processors.isEmpty()) {
        return true;
    }
    StringWriter writer = new StringWriter();
    try {
        Callable<Boolean> compileTask = compilationTaskFactory.create(processors, writer);
        if (!compileTask.call()) {
            processingEnv.getMessager().printMessage(Diagnostic.Kind.ERROR, "Failed to compile provider classes. See output below.");
            printCompileErrors(compilationTaskFactory);
            return false;
        }
    } catch (Exception e) {
        processingEnv.getMessager().printMessage(Diagnostic.Kind.ERROR, "Error to compile provider classes, due to: " + e.getMessage() + ". See output below.");
        return false;
    } finally {
        String output = writer.toString();
        if (Strings.isNullOrBlank(output)) {
            output = "success";
        }
        processingEnv.getMessager().printMessage(Diagnostic.Kind.NOTE, "Fabric8 model generator compiler output:" + output);
    }
    // 2nd pass generate json.
    for (Element element : roundEnv.getElementsAnnotatedWith(KubernetesModelProcessor.class)) {
        KubernetesModelProcessor annotation = element.getAnnotation(KubernetesModelProcessor.class);
        String kubernetesJsonFileName = annotation.value();
        KubernetesResource json = readJson(kubernetesJsonFileName);
        Builder<? extends KubernetesResource> builder;
        if (json instanceof KubernetesList) {
            builder = new KubernetesListBuilder((KubernetesList) json);
        } else if (json instanceof Template) {
            builder = new TemplateBuilder((Template) json);
        } else if (json != null) {
            processingEnv.getMessager().printMessage(Diagnostic.Kind.ERROR, "Unknown Kubernetes json type:" + json.getClass());
            return false;
        } else {
            return false;
        }
        try {
            if (element instanceof TypeElement) {
                for (ExecutableElement methodElement : ElementFilter.methodsIn(element.getEnclosedElements())) {
                    TypeElement classElement = getClassElement(element);
                    Class<?> cls = Class.forName(classElement.getQualifiedName().toString());
                    final Object instance = cls.newInstance();
                    final String methodName = methodElement.getSimpleName().toString();
                    if (builder instanceof Visitable) {
                        ((Visitable) builder).accept(new Visitor() {

                            @Override
                            public void visit(Object o) {
                                for (Method m : findMethods(instance, methodName, o.getClass())) {
                                    Named named = m.getAnnotation(Named.class);
                                    if (named != null && !Strings.isNullOrBlank(named.value())) {
                                        String objectName = getName(o);
                                        // If a name has been explicitly specified check if there is a match
                                        if (!named.value().equals(objectName)) {
                                            processingEnv.getMessager().printMessage(Diagnostic.Kind.WARNING, "Named method:" + m.getName() + " with name:" + named.value() + " doesn't match: " + objectName + ", ignoring");
                                            return;
                                        }
                                    }
                                    try {
                                        m.invoke(instance, o);
                                    } catch (IllegalAccessException e) {
                                        processingEnv.getMessager().printMessage(Diagnostic.Kind.ERROR, "Error invoking visitor method:" + m.getName() + " on:" + instance + "with argument:" + o);
                                    } catch (InvocationTargetException e) {
                                        processingEnv.getMessager().printMessage(Diagnostic.Kind.ERROR, "Error invoking visitor method:" + m.getName() + " on:" + instance + "with argument:" + o);
                                    }
                                }
                            }
                        });
                    } else {
                        processingEnv.getMessager().printMessage(Diagnostic.Kind.ERROR, "Json type is not visitable.");
                    }
                }
            }
            json = builder.build();
            generateJson(kubernetesJsonFileName, json);
        } catch (Exception ex) {
            processingEnv.getMessager().printMessage(Diagnostic.Kind.ERROR, "Error creating Kubernetes configuration:" + ex.getMessage());
        }
    }
    return true;
}