ibessonov commented on a change in pull request #122: URL: https://github.com/apache/ignite-3/pull/122#discussion_r639470052
########## File path: modules/configuration/src/main/java/org/apache/ignite/configuration/internal/asm/ConfigurationAsmGenerator.java ########## @@ -0,0 +1,1117 @@ +/* + * 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.configuration.internal.asm; + +import com.facebook.presto.bytecode.BytecodeBlock; +import com.facebook.presto.bytecode.ClassDefinition; +import com.facebook.presto.bytecode.ClassGenerator; +import com.facebook.presto.bytecode.FieldDefinition; +import com.facebook.presto.bytecode.MethodDefinition; +import com.facebook.presto.bytecode.ParameterizedType; +import com.facebook.presto.bytecode.Variable; +import com.facebook.presto.bytecode.control.IfStatement; +import com.facebook.presto.bytecode.expression.BytecodeExpression; +import java.io.Serializable; +import java.lang.invoke.LambdaMetafactory; +import java.lang.invoke.MethodHandle; +import java.lang.invoke.MethodHandles.Lookup; +import java.lang.invoke.MethodType; +import java.lang.reflect.Constructor; +import java.lang.reflect.Field; +import java.lang.reflect.Method; +import java.util.ArrayList; +import java.util.Arrays; +import java.util.Collections; +import java.util.HashMap; +import java.util.HashSet; +import java.util.LinkedList; +import java.util.List; +import java.util.Map; +import java.util.NoSuchElementException; +import java.util.Queue; +import java.util.Set; +import java.util.function.BiFunction; +import java.util.function.Consumer; +import java.util.function.Supplier; +import org.apache.ignite.configuration.ConfigurationChanger; +import org.apache.ignite.configuration.ConfigurationProperty; +import org.apache.ignite.configuration.ConfigurationValue; +import org.apache.ignite.configuration.NamedConfigurationTree; +import org.apache.ignite.configuration.RootKey; +import org.apache.ignite.configuration.annotation.Config; +import org.apache.ignite.configuration.annotation.ConfigValue; +import org.apache.ignite.configuration.annotation.ConfigurationRoot; +import org.apache.ignite.configuration.annotation.NamedConfigValue; +import org.apache.ignite.configuration.annotation.Value; +import org.apache.ignite.configuration.internal.DynamicConfiguration; +import org.apache.ignite.configuration.internal.DynamicProperty; +import org.apache.ignite.configuration.internal.NamedListConfiguration; +import org.apache.ignite.configuration.tree.ConfigurationSource; +import org.apache.ignite.configuration.tree.ConfigurationVisitor; +import org.apache.ignite.configuration.tree.ConstructableTreeNode; +import org.apache.ignite.configuration.tree.InnerNode; +import org.apache.ignite.configuration.tree.NamedListNode; +import org.apache.ignite.configuration.tree.NamedListView; +import org.jetbrains.annotations.NotNull; +import org.objectweb.asm.Handle; +import org.objectweb.asm.Opcodes; +import org.objectweb.asm.Type; + +import static com.facebook.presto.bytecode.Access.FINAL; +import static com.facebook.presto.bytecode.Access.PRIVATE; +import static com.facebook.presto.bytecode.Access.PUBLIC; +import static com.facebook.presto.bytecode.Access.STATIC; +import static com.facebook.presto.bytecode.Access.SYNTHETIC; +import static com.facebook.presto.bytecode.Parameter.arg; +import static com.facebook.presto.bytecode.ParameterizedType.type; +import static com.facebook.presto.bytecode.ParameterizedType.typeFromJavaClassName; +import static com.facebook.presto.bytecode.expression.BytecodeExpressions.constantClass; +import static com.facebook.presto.bytecode.expression.BytecodeExpressions.constantNull; +import static com.facebook.presto.bytecode.expression.BytecodeExpressions.constantString; +import static com.facebook.presto.bytecode.expression.BytecodeExpressions.inlineIf; +import static com.facebook.presto.bytecode.expression.BytecodeExpressions.invokeDynamic; +import static com.facebook.presto.bytecode.expression.BytecodeExpressions.invokeStatic; +import static com.facebook.presto.bytecode.expression.BytecodeExpressions.isNull; +import static com.facebook.presto.bytecode.expression.BytecodeExpressions.newInstance; +import static java.lang.invoke.MethodType.methodType; +import static java.util.Collections.singleton; +import static java.util.EnumSet.of; +import static org.objectweb.asm.Opcodes.H_NEWINVOKESPECIAL; +import static org.objectweb.asm.Type.getMethodDescriptor; +import static org.objectweb.asm.Type.getMethodType; +import static org.objectweb.asm.Type.getType; + +/** + * This class is responsible for generating internal implementation classes for configuration schemas. It uses classes + * from {@code bytecode} module to achieve this goal, like {@link ClassGenerator}, for examples. + */ +public class ConfigurationAsmGenerator { + /** {@link LambdaMetafactory#metafactory(Lookup, String, MethodType, MethodType, MethodHandle, MethodType)} */ + private static final Method LAMBDA_METAFACTORY; + + /** {@link Consumer#accept(Object)}*/ + private static final Method ACCEPT; + + /** {@link ConfigurationVisitor#visitLeafNode(String, Serializable)} */ + private static final Method VISIT_LEAF; + + /** {@link ConfigurationVisitor#visitInnerNode(String, InnerNode)} */ + private static final Method VISIT_INNER; + + /** {@link ConfigurationVisitor#visitNamedListNode(String, NamedListNode)} */ + private static final Method VISIT_NAMED; + + /** {@link ConfigurationSource#unwrap(Class)} */ + private static final Method UNWRAP; + + /** {@link ConfigurationSource#descend(ConstructableTreeNode)} */ + private static final Method DESCEND; + + /** {@link ConstructableTreeNode#copy()} */ + private static final Method COPY; + + /** {@link DynamicConfiguration#DynamicConfiguration(List, String, RootKey, ConfigurationChanger)} */ + private static final Constructor DYNAMIC_CONFIGURATION_CTOR; + + /** {@link DynamicConfiguration#add(ConfigurationProperty)} */ + private static final Method DYNAMIC_CONFIGURATION_ADD; + + static { + try { + LAMBDA_METAFACTORY = LambdaMetafactory.class.getDeclaredMethod( + "metafactory", + Lookup.class, + String.class, + MethodType.class, + MethodType.class, + MethodHandle.class, + MethodType.class + ); + + ACCEPT = Consumer.class.getDeclaredMethod("accept", Object.class); + + VISIT_LEAF = ConfigurationVisitor.class.getDeclaredMethod("visitLeafNode", String.class, Serializable.class); + + VISIT_INNER = ConfigurationVisitor.class.getDeclaredMethod("visitInnerNode", String.class, InnerNode.class); + + VISIT_NAMED = ConfigurationVisitor.class.getDeclaredMethod("visitNamedListNode", String.class, NamedListNode.class); + + UNWRAP = ConfigurationSource.class.getDeclaredMethod("unwrap", Class.class); + + DESCEND = ConfigurationSource.class.getDeclaredMethod("descend", ConstructableTreeNode.class); + + COPY = ConstructableTreeNode.class.getDeclaredMethod("copy"); + + DYNAMIC_CONFIGURATION_CTOR = DynamicConfiguration.class.getDeclaredConstructor( + List.class, + String.class, + RootKey.class, + ConfigurationChanger.class + ); + + DYNAMIC_CONFIGURATION_ADD = DynamicConfiguration.class.getDeclaredMethod( + "add", + ConfigurationProperty.class + ); + } + catch (NoSuchMethodException nsme) { + throw new ExceptionInInitializerError(nsme); + } + } + + /** Information about schema classes - bunch of names and dynamically compiled internal classes. */ + private final Map<Class<?>, SchemaClassesInfo> schemasInfo = new HashMap<>(); + + /** Class generator instance. */ + private final ClassGenerator generator = ClassGenerator.classGenerator(this.getClass().getClassLoader()); + + /** + * Creates new instance of {@code *Node} class corresponding to the given Configuration Schema. + * @param schemaClass Configuration Schema class. + * @return Node instance. + */ + public synchronized InnerNode instantiateNode(Class<?> schemaClass) { + SchemaClassesInfo info = schemasInfo.get(schemaClass); + + assert info != null && info.nodeClass != null : schemaClass; + + try { + Constructor<? extends InnerNode> constructor = info.nodeClass.getConstructor(); + + assert constructor.canAccess(null); + + return constructor.newInstance(); + } + catch (Exception e) { + throw new IllegalStateException(e); + } + } + + /** + * Creates new instance of {@code *Configuration} class corresponding to the given Configuration Schema. + * @param rootKey Root key of the configuration root. + * @param changer Configuration changer instance to pass into constructor. + * @return Configuration instance. + */ + public synchronized DynamicConfiguration<?, ?> instantiateCfg( + RootKey<?, ?> rootKey, + ConfigurationChanger changer + ) { + SchemaClassesInfo info = schemasInfo.get(rootKey.schemaClass()); + + assert info != null && info.cfgImplClass != null; + + try { + Constructor<? extends DynamicConfiguration<?, ?>> constructor = info.cfgImplClass.getConstructor( + List.class, + String.class, + RootKey.class, + ConfigurationChanger.class + ); + + assert constructor.canAccess(null); + + return constructor.newInstance(Collections.emptyList(), rootKey.key(), rootKey, changer); + } + catch (Exception e) { + throw new IllegalStateException(e); + } + } + + /** + * Generates, defines, loads and initializes all dynamic classes required for the given Configuration Schema. + * @param rootSchemaClass Class of the root Configuration Schema. + */ + public synchronized void compileRootSchema(Class<?> rootSchemaClass) { + if (schemasInfo.containsKey(rootSchemaClass)) + return; // Already compiled. + + Queue<Class<?>> compileQueue = new LinkedList<>(); + compileQueue.add(rootSchemaClass); + + schemasInfo.put(rootSchemaClass, new SchemaClassesInfo(rootSchemaClass)); + + Set<Class<?>> schemas = new HashSet<>(); + List<ClassDefinition> definitions = new ArrayList<>(); + + while (!compileQueue.isEmpty()) { + Class<?> schemaClass = compileQueue.poll(); + + assert schemaClass.isAnnotationPresent(ConfigurationRoot.class) + || schemaClass.isAnnotationPresent(Config.class) + : schemaClass + " is not properly annotated"; + + assert schemasInfo.containsKey(schemaClass); + + for (Field field : schemaClass.getDeclaredFields()) { + if (isConfigValue(field) || isNamedConfigValue(field)) { + Class<?> subSchemaClass = field.getType(); + + if (!schemasInfo.containsKey(subSchemaClass)) { + compileQueue.offer(subSchemaClass); + schemasInfo.put(subSchemaClass, new SchemaClassesInfo(subSchemaClass)); + } + } + } + + schemas.add(schemaClass); Review comment: Please refer to line 265, there I check that schema is not yet compiled. -- This is an automated message from the Apache Git Service. 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