sashapolo commented on a change in pull request #153: URL: https://github.com/apache/ignite-3/pull/153#discussion_r643156679
########## File path: modules/network-annotation-processor/src/main/java/org/apache/ignite/network/processor/internal/NetworkMessageProcessor.java ########## @@ -0,0 +1,254 @@ +/* + * Licensed to the Apache Software Foundation (ASF) under one or more + * contributor license agreements. See the NOTICE file distributed with + * this work for additional information regarding copyright ownership. + * The ASF licenses this file to You under the Apache License, Version 2.0 + * (the "License"); you may not use this file except in compliance with + * the License. You may obtain a copy of the License at + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + */ + +package org.apache.ignite.network.processor.internal; + +import java.io.IOException; +import java.util.Collection; +import java.util.HashMap; +import java.util.HashSet; +import java.util.List; +import java.util.Set; +import java.util.stream.Collectors; +import javax.annotation.processing.AbstractProcessor; +import javax.annotation.processing.RoundEnvironment; +import javax.lang.model.SourceVersion; +import javax.lang.model.element.Element; +import javax.lang.model.element.ElementKind; +import javax.lang.model.element.TypeElement; +import javax.tools.Diagnostic; +import com.squareup.javapoet.JavaFile; +import com.squareup.javapoet.TypeSpec; +import org.apache.ignite.network.NetworkMessage; +import org.apache.ignite.network.annotations.AutoMessage; +import org.apache.ignite.network.annotations.ModuleMessageTypes; +import org.apache.ignite.network.processor.internal.messages.MessageBuilderGenerator; +import org.apache.ignite.network.processor.internal.messages.MessageFactoryGenerator; +import org.apache.ignite.network.processor.internal.messages.MessageImplGenerator; +import org.apache.ignite.network.processor.internal.serialization.MessageDeserializerGenerator; +import org.apache.ignite.network.processor.internal.serialization.MessageSerializerGenerator; +import org.apache.ignite.network.processor.internal.serialization.RegistryInitializerGenerator; +import org.apache.ignite.network.processor.internal.serialization.SerializationFactoryGenerator; +import org.apache.ignite.network.serialization.MessageDeserializer; +import org.apache.ignite.network.serialization.MessageSerializationFactory; +import org.apache.ignite.network.serialization.MessageSerializationRegistry; +import org.apache.ignite.network.serialization.MessageSerializer; + +/** + * Annotation processor for working with the {@link AutoMessage} annotation. + */ +public class NetworkMessageProcessor extends AbstractProcessor { + /** {@inheritDoc} */ + @Override public Set<String> getSupportedAnnotationTypes() { + return Set.of(AutoMessage.class.getName()); + } + + /** {@inheritDoc} */ + @Override public SourceVersion getSupportedSourceVersion() { + return SourceVersion.latest(); + } + + /** {@inheritDoc} */ + @Override public boolean process(Set<? extends TypeElement> annotations, RoundEnvironment roundEnv) { + List<MessageClass> messages = annotations.stream() + .map(roundEnv::getElementsAnnotatedWith) + .flatMap(Collection::stream) + .map(TypeElement.class::cast) + .map(MessageClass::new) + .collect(Collectors.toList()); + + if (messages.isEmpty()) { + return true; + } + + try { + validateMessages(messages); + + MessageTypes moduleMessageTypes = getModuleMessageTypes(roundEnv); + + generateMessageImpls(messages, moduleMessageTypes); + + generateSerializers(messages, moduleMessageTypes); + } + catch (ProcessingException e) { + processingEnv.getMessager().printMessage(Diagnostic.Kind.ERROR, e.getMessage(), e.getElement()); + } + + return true; + } + + /** + * Generates the following classes for the current compilation unit: + * + * <ol> + * <li>Builder interfaces;</li> + * <li>Network Message and Builder implementations;</li> + * <li>Message factory for all generated messages.</li> + * </ol> + */ + private void generateMessageImpls(List<MessageClass> annotatedMessages, MessageTypes messageTypes) { + for (MessageClass message : annotatedMessages) { + try { + // generate a Builder interface with setters + TypeSpec builder = new MessageBuilderGenerator(processingEnv, message) + .generateBuilderInterface(); + + writeToFile(message.packageName(), builder); + + // generate the message and the builder implementations + TypeSpec messageImpl = new MessageImplGenerator(processingEnv, message, builder, messageTypes) + .generateMessageImpl(); + + writeToFile(message.packageName(), messageImpl); + } + catch (ProcessingException e) { + throw new ProcessingException(e.getMessage(), e.getCause(), message.element()); + } + } + + // generate a factory for all messages inside the current compilation unit + TypeSpec messageFactory = new MessageFactoryGenerator(processingEnv, annotatedMessages, messageTypes) Review comment: yes, I have no idea how to make it work though... -- This is an automated message from the Apache Git Service. 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