tkalkirill commented on a change in pull request #499: URL: https://github.com/apache/ignite-3/pull/499#discussion_r773178688
########## File path: modules/configuration/src/main/java/org/apache/ignite/internal/configuration/asm/DirectProxyAsmGenerator.java ########## @@ -0,0 +1,297 @@ +/* + * 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.internal.configuration.asm; + +import static com.facebook.presto.bytecode.Access.FINAL; +import static com.facebook.presto.bytecode.Access.PUBLIC; +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.constantString; +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.newInstance; +import static java.lang.invoke.MethodType.methodType; +import static java.util.Arrays.asList; +import static java.util.EnumSet.of; +import static org.apache.ignite.internal.configuration.asm.ConfigurationAsmGenerator.LAMBDA_METAFACTORY; +import static org.apache.ignite.internal.configuration.asm.ConfigurationAsmGenerator.internalName; +import static org.apache.ignite.internal.configuration.util.ConfigurationUtil.isConfigValue; +import static org.apache.ignite.internal.configuration.util.ConfigurationUtil.isInjectedName; +import static org.apache.ignite.internal.configuration.util.ConfigurationUtil.isInternalId; +import static org.apache.ignite.internal.configuration.util.ConfigurationUtil.isNamedConfigValue; +import static org.apache.ignite.internal.configuration.util.ConfigurationUtil.isPolymorphicId; +import static org.apache.ignite.internal.configuration.util.ConfigurationUtil.isValue; +import static org.apache.ignite.internal.util.CollectionUtils.concat; +import static org.objectweb.asm.Opcodes.H_NEWINVOKESPECIAL; +import static org.objectweb.asm.Type.VOID_TYPE; +import static org.objectweb.asm.Type.getMethodDescriptor; +import static org.objectweb.asm.Type.getMethodType; +import static org.objectweb.asm.Type.getType; + +import com.facebook.presto.bytecode.BytecodeBlock; +import com.facebook.presto.bytecode.ClassDefinition; +import com.facebook.presto.bytecode.MethodDefinition; +import com.facebook.presto.bytecode.ParameterizedType; +import com.facebook.presto.bytecode.expression.BytecodeExpression; +import java.lang.reflect.Constructor; +import java.lang.reflect.Field; +import java.lang.reflect.Method; +import java.util.Collection; +import java.util.List; +import java.util.Set; +import java.util.function.BiFunction; +import org.apache.ignite.configuration.ConfigurationValue; +import org.apache.ignite.configuration.NamedConfigurationTree; +import org.apache.ignite.configuration.annotation.InternalId; +import org.apache.ignite.internal.configuration.DynamicConfigurationChanger; +import org.apache.ignite.internal.configuration.direct.DirectConfigurationProxy; +import org.apache.ignite.internal.configuration.direct.DirectNamedListProxy; +import org.apache.ignite.internal.configuration.direct.DirectValueProxy; +import org.apache.ignite.internal.configuration.direct.KeyPathNode; +import org.apache.ignite.internal.configuration.tree.InnerNode; +import org.apache.ignite.internal.configuration.util.ConfigurationUtil; +import org.jetbrains.annotations.NotNull; +import org.jetbrains.annotations.Nullable; +import org.objectweb.asm.Handle; + +/** + * Helper class to generate classes that extend {@link DirectConfigurationProxy}. + * All that's required here is to generate constructor and a bunch of getter methods. + */ +class DirectProxyAsmGenerator { + /** {@link DirectConfigurationProxy#DirectConfigurationProxy(List, DynamicConfigurationChanger)}. */ + private static final Constructor<?> DIRECT_CFG_CTOR; + + /** {@link ConfigurationUtil#appendKey(List, Object)}. */ + private static final Method APPEND_KEY; + + /** This generator instance is only used for {@link ConfigurationAsmGenerator#schemaInfo(java.lang.Class)}. */ + private final ConfigurationAsmGenerator cgen; + + /** Schema class. */ + private final Class<?> schemaClass; + + /** Set of internal extensions. */ + private final Set<Class<?>> internalExtensions; + + /** Fields from the schema class. */ + private final List<Field> schemaFields; + + /** Fields from all internal extensions. */ + private final Collection<Field> internalExtensionsFields; + + /** {@link InternalId} field. */ + @Nullable + private final Field internalIdField; + private ClassDefinition classDef; + + static { + try { + DIRECT_CFG_CTOR = DirectConfigurationProxy.class.getDeclaredConstructor(List.class, DynamicConfigurationChanger.class); + + APPEND_KEY = ConfigurationUtil.class.getDeclaredMethod("appendKey", List.class, Object.class); + } catch (NoSuchMethodException e) { + throw new ExceptionInInitializerError(e); + } + } + + /** + * Constructor. + * Please refer to indvidual fields for comments. + */ + DirectProxyAsmGenerator( + ConfigurationAsmGenerator cgen, + Class<?> schemaClass, + Set<Class<?>> internalExtensions, + List<Field> schemaFields, + Collection<Field> internalExtensionsFields, + Field internalIdField + ) { + this.cgen = cgen; + this.schemaClass = schemaClass; + this.internalExtensions = internalExtensions; + this.schemaFields = schemaFields; + this.internalExtensionsFields = internalExtensionsFields; + this.internalIdField = internalIdField; + } + + /** + * Generates class definition. Expected to be called once at most. + */ + public ClassDefinition generate() { + assert classDef == null; + + SchemaClassesInfo schemaClassInfo = cgen.schemaInfo(schemaClass); + + // public final class FooDirectProxy extends DirectConfigurationProxy<Object, Object> implements FooConfiguration, ... + classDef = new ClassDefinition( + of(PUBLIC, FINAL), + internalName(schemaClassInfo.directProxyClassName), + type(DirectConfigurationProxy.class), + cgen.configClassInterfaces(schemaClass, internalExtensions) + ); + + addConstructor(); + + if (internalIdField != null) { + addGetMethod(internalIdField); + } + + for (Field schemaField : concat(schemaFields, internalExtensionsFields)) { + addGetMethod(schemaField); + } + + return classDef; + } + + /** + * Generates constructor. + */ + private void addConstructor() { + // public FooDirectProxy(List<KeyPathNode> keys, DynamicConfigurationChanger changer) { + MethodDefinition ctor = classDef.declareConstructor( + of(PUBLIC), + arg("keys", List.class), + arg("changer", DynamicConfigurationChanger.class) + ); + + // super(keys, changer); + // } + ctor.getBody() + .append(ctor.getThis()) + .append(ctor.getScope().getVariable("keys")) + .append(ctor.getScope().getVariable("changer")) + .invokeConstructor(DIRECT_CFG_CTOR) + .ret(); + } + + /** + * Generates getter based on the field. + */ + private void addGetMethod(Field schemaField) { + Class<?> schemaFieldType = schemaField.getType(); + + String fieldName = schemaField.getName(); + + SchemaClassesInfo schemaClassInfo = cgen.schemaInfo(schemaFieldType); + + ParameterizedType returnType; + + // Return type is determined like in ConfigurationImpl class. + if (isConfigValue(schemaField)) { + returnType = typeFromJavaClassName(schemaClassInfo.cfgClassName); + } else if (isNamedConfigValue(schemaField)) { + returnType = type(NamedConfigurationTree.class); + } else { + assert isValue(schemaField) || isPolymorphicId(schemaField) || isInjectedName(schemaField) + || isInternalId(schemaField) : schemaField; + + returnType = type(ConfigurationValue.class); + } + + MethodDefinition methodDef = classDef.declareMethod( + of(PUBLIC), + fieldName, + returnType + ); + + BytecodeBlock body = methodDef.getBody(); + + if (isValue(schemaField) || isPolymorphicId(schemaField) || isInjectedName(schemaField) || isInternalId(schemaField)) { + // new DirectValueProxy(appendKey(this.keys, new KeyPathNode("name")), changer); + // or + // new DirectValueProxy(appendKey(this.keys, new KeyPathNode("<internal_id>")), changer); + body.append(newInstance( + DirectValueProxy.class, + invokeStatic( + APPEND_KEY, + methodDef.getThis().getField("keys", List.class), + newInstance( + KeyPathNode.class, + constantString(isInjectedName(schemaField) ? InnerNode.INJECTED_NAME + : isInternalId(schemaField) ? InnerNode.INTERNAL_ID : fieldName) + ) + ), + methodDef.getThis().getField("changer", DynamicConfigurationChanger.class) + )); + } else { + SchemaClassesInfo fieldSchemaClassInfo = cgen.schemaInfo(schemaField.getType()); + + ParameterizedType resultType = typeFromJavaClassName(fieldSchemaClassInfo.directProxyClassName); + + if (isConfigValue(schemaField)) { + // new BarDirectProxy(appendKey(this.keys, new KeyPathNode("name")), changer); Review comment: **ParameterizedType resultType = typeFromJavaClassName(fieldSchemaClassInfo.directProxyClassName);** Example of direct proxy name -- This is an automated message from the Apache Git Service. To respond to the message, please log on to GitHub and use the URL above to go to the specific comment. To unsubscribe, e-mail: [email protected] For queries about this service, please contact Infrastructure at: [email protected]
