migrated to jackson
parent
2484dec68a
commit
c75cf03762
@ -0,0 +1,10 @@
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val implementation by configurations
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dependencies {
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implementation(Jackson.databind)
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implementation(Jackson.module_parameter_names)
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}
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tasks.withType<JavaCompile> {
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options.compilerArgs.add("-parameters")
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}
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@ -1,273 +0,0 @@
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/*
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* Copyright (C) 2011 Google Inc.
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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package com.google.gson.typeadapters;
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import com.google.gson.*;
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import com.google.gson.reflect.TypeToken;
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import com.google.gson.stream.JsonReader;
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import com.google.gson.stream.JsonWriter;
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import java.io.IOException;
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import java.util.LinkedHashMap;
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import java.util.Map;
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/**
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* Adapts values whose runtime type may differ from their declaration type. This
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* is necessary when a field's type is not the same type that GSON should create
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* when deserializing that field. For example, consider these types:
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* <pre> {@code
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* abstract class Shape {
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* int x;
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* int y;
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* }
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* class Circle extends Shape {
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* int radius;
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* }
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* class Rectangle extends Shape {
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* int width;
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* int height;
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* }
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* class Diamond extends Shape {
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* int width;
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* int height;
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* }
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* class Drawing {
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* Shape bottomShape;
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* Shape topShape;
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* }
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* }</pre>
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* <p>Without additional type information, the serialized JSON is ambiguous. Is
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* the bottom shape in this drawing a rectangle or a diamond? <pre> {@code
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* {
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* "bottomShape": {
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* "width": 10,
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* "height": 5,
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* "x": 0,
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* "y": 0
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* },
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* "topShape": {
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* "radius": 2,
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* "x": 4,
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* "y": 1
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* }
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* }}</pre>
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* This class addresses this problem by adding type information to the
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* serialized JSON and honoring that type information when the JSON is
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* deserialized: <pre> {@code
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* {
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* "bottomShape": {
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* "type": "Diamond",
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* "width": 10,
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* "height": 5,
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* "x": 0,
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* "y": 0
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* },
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* "topShape": {
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* "type": "Circle",
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* "radius": 2,
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* "x": 4,
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* "y": 1
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* }
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* }}</pre>
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* Both the type field name ({@code "type"}) and the type labels ({@code
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* "Rectangle"}) are configurable.
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*
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* <h3>Registering Types</h3>
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* Create a {@code RuntimeTypeAdapterFactory} by passing the base type and type field
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* name to the {@link #of} factory method. If you don't supply an explicit type
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* field name, {@code "type"} will be used. <pre> {@code
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* RuntimeTypeAdapterFactory<Shape> shapeAdapterFactory
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* = RuntimeTypeAdapterFactory.of(Shape.class, "type");
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* }</pre>
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* Next register all of your subtypes. Every subtype must be explicitly
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* registered. This protects your application from injection attacks. If you
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* don't supply an explicit type label, the type's simple name will be used.
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* <pre> {@code
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* shapeAdapterFactory.registerSubtype(Rectangle.class, "Rectangle");
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* shapeAdapterFactory.registerSubtype(Circle.class, "Circle");
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* shapeAdapterFactory.registerSubtype(Diamond.class, "Diamond");
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* }</pre>
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* Finally, register the type adapter factory in your application's GSON builder:
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* <pre> {@code
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* Gson gson = new GsonBuilder()
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* .registerTypeAdapterFactory(shapeAdapterFactory)
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* .create();
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* }</pre>
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* Like {@code GsonBuilder}, this API supports chaining: <pre> {@code
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* RuntimeTypeAdapterFactory<Shape> shapeAdapterFactory = RuntimeTypeAdapterFactory.of(Shape.class)
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* .registerSubtype(Rectangle.class)
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* .registerSubtype(Circle.class)
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* .registerSubtype(Diamond.class);
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* }</pre>
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*
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* <h3>Serialization and deserialization</h3>
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* In order to serialize and deserialize a polymorphic object,
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* you must specify the base type explicitly.
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* <pre> {@code
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* Diamond diamond = new Diamond();
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* String json = gson.toJson(diamond, Shape.class);
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* }</pre>
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* And then:
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* <pre> {@code
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* Shape shape = gson.fromJson(json, Shape.class);
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* }</pre>
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*/
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@SuppressWarnings("ALL")
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public final class RuntimeTypeAdapterFactory<T> implements TypeAdapterFactory {
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private final Class<?> baseType;
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private final String typeFieldName;
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private final Map<String, Class<?>> labelToSubtype = new LinkedHashMap<>();
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private final Map<Class<?>, String> subtypeToLabel = new LinkedHashMap<>();
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private final boolean maintainType;
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private RuntimeTypeAdapterFactory(Class<?> baseType, String typeFieldName, boolean maintainType) {
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if (typeFieldName == null || baseType == null) {
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throw new NullPointerException();
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}
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this.baseType = baseType;
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this.typeFieldName = typeFieldName;
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this.maintainType = maintainType;
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}
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/**
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* Creates a new runtime type adapter using for {@code baseType} using {@code
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* typeFieldName} as the type field name. Type field names are case sensitive.
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* {@code maintainType} flag decide if the type will be stored in pojo or not.
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*/
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public static <T> RuntimeTypeAdapterFactory<T> of(Class<T> baseType, String typeFieldName, boolean maintainType) {
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return new RuntimeTypeAdapterFactory<>(baseType, typeFieldName, maintainType);
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}
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/**
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* Creates a new runtime type adapter using for {@code baseType} using {@code
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* typeFieldName} as the type field name. Type field names are case sensitive.
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*/
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public static <T> RuntimeTypeAdapterFactory<T> of(Class<T> baseType, String typeFieldName) {
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return new RuntimeTypeAdapterFactory<>(baseType, typeFieldName, false);
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}
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/**
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* Creates a new runtime type adapter for {@code baseType} using {@code "type"} as
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* the type field name.
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*/
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public static <T> RuntimeTypeAdapterFactory<T> of(Class<T> baseType) {
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return new RuntimeTypeAdapterFactory<>(baseType, "type", false);
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}
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/**
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* Registers {@code type} identified by {@code label}. Labels are case
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* sensitive.
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*
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* @throws IllegalArgumentException if either {@code type} or {@code label}
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* have already been registered on this type adapter.
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*/
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public RuntimeTypeAdapterFactory<T> registerSubtype(Class<? extends T> type, String label) {
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if (type == null || label == null) {
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throw new NullPointerException();
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}
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if (subtypeToLabel.containsKey(type) || labelToSubtype.containsKey(label)) {
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throw new IllegalArgumentException("types and labels must be unique");
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}
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labelToSubtype.put(label, type);
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subtypeToLabel.put(type, label);
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return this;
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}
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/**
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* Registers {@code type} identified by its {@link Class#getSimpleName simple
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* name}. Labels are case sensitive.
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*
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* @throws IllegalArgumentException if either {@code type} or its simple name
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* have already been registered on this type adapter.
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*/
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public RuntimeTypeAdapterFactory<T> registerSubtype(Class<? extends T> type) {
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return registerSubtype(type, type.getSimpleName());
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}
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@Override
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public <R> TypeAdapter<R> create(Gson gson, TypeToken<R> type) {
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if (type.getRawType() != baseType) {
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return null;
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}
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final TypeAdapter<JsonElement> jsonElementAdapter = gson.getAdapter(JsonElement.class);
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final Map<String, TypeAdapter<?>> labelToDelegate
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= new LinkedHashMap<>();
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final Map<Class<?>, TypeAdapter<?>> subtypeToDelegate
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= new LinkedHashMap<>();
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for (Map.Entry<String, Class<?>> entry : labelToSubtype.entrySet()) {
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TypeAdapter<?> delegate = gson.getDelegateAdapter(this, TypeToken.get(entry.getValue()));
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labelToDelegate.put(entry.getKey(), delegate);
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subtypeToDelegate.put(entry.getValue(), delegate);
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}
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return new TypeAdapter<R>() {
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@Override public R read(JsonReader in) throws IOException {
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JsonElement jsonElement = jsonElementAdapter.read(in);
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JsonElement labelJsonElement;
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if (maintainType) {
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labelJsonElement = jsonElement.getAsJsonObject().get(typeFieldName);
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} else {
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labelJsonElement = jsonElement.getAsJsonObject().remove(typeFieldName);
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}
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if (labelJsonElement == null) {
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throw new JsonParseException("cannot deserialize " + baseType
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+ " because it does not define a field named " + typeFieldName);
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}
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String label = labelJsonElement.getAsString();
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@SuppressWarnings("unchecked") // registration requires that subtype extends T
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TypeAdapter<R> delegate = (TypeAdapter<R>) labelToDelegate.get(label);
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if (delegate == null) {
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throw new JsonParseException("cannot deserialize " + baseType + " subtype named "
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+ label + "; did you forget to register a subtype?");
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}
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return delegate.fromJsonTree(jsonElement);
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}
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@Override public void write(JsonWriter out, R value) throws IOException {
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Class<?> srcType = value.getClass();
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String label = subtypeToLabel.get(srcType);
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@SuppressWarnings("unchecked") // registration requires that subtype extends T
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TypeAdapter<R> delegate = (TypeAdapter<R>) subtypeToDelegate.get(srcType);
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if (delegate == null) {
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throw new JsonParseException("cannot serialize " + srcType.getName()
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+ "; did you forget to register a subtype?");
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}
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JsonObject jsonObject = delegate.toJsonTree(value).getAsJsonObject();
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if (maintainType) {
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jsonElementAdapter.write(out, jsonObject);
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return;
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}
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JsonObject clone = new JsonObject();
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if (jsonObject.has(typeFieldName)) {
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throw new JsonParseException("cannot serialize " + srcType.getName()
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+ " because it already defines a field named " + typeFieldName);
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}
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clone.add(typeFieldName, new JsonPrimitive(label));
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for (Map.Entry<String, JsonElement> e : jsonObject.entrySet()) {
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clone.add(e.getKey(), e.getValue());
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}
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jsonElementAdapter.write(out, clone);
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}
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}.nullSafe();
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}
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}
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@ -0,0 +1,7 @@
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package eu.jonahbauer.wizard.common.messages;
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public class ParseException extends RuntimeException {
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public ParseException(Throwable cause) {
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super(cause);
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}
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}
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@ -1,25 +1,23 @@
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package eu.jonahbauer.wizard.common.messages.client;
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import com.google.gson.Gson;
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import com.google.gson.GsonBuilder;
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import com.google.gson.JsonParseException;
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import com.fasterxml.jackson.databind.ObjectMapper;
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import eu.jonahbauer.wizard.common.messages.ParseException;
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import eu.jonahbauer.wizard.common.messages.player.PlayerMessage;
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import eu.jonahbauer.wizard.common.util.SealedClassTypeAdapterFactory;
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import eu.jonahbauer.wizard.common.util.SerializationUtil;
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import lombok.EqualsAndHashCode;
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import lombok.SneakyThrows;
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@EqualsAndHashCode
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public abstract sealed class ClientMessage permits CreateSessionMessage, InteractionMessage, JoinSessionMessage, LeaveSessionMessage, ReadyMessage, RejoinMessage {
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private static final Gson GSON = new GsonBuilder()
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.registerTypeAdapterFactory(SealedClassTypeAdapterFactory.of(ClientMessage.class, "Message"))
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.registerTypeAdapterFactory(SealedClassTypeAdapterFactory.of(PlayerMessage.class, "Message"))
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.create();
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private static final ObjectMapper MAPPER = SerializationUtil.newObjectMapper(ClientMessage.class, PlayerMessage.class);
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public static ClientMessage parse(String json) throws JsonParseException {
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return GSON.fromJson(json, ClientMessage.class);
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public static ClientMessage parse(String json) throws ParseException {
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return SerializationUtil.parse(json, MAPPER, ClientMessage.class);
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}
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@Override
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@SneakyThrows
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public String toString() {
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return GSON.toJson(this, ClientMessage.class);
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return MAPPER.writeValueAsString(this);
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}
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}
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@ -1,23 +1,22 @@
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package eu.jonahbauer.wizard.common.messages.observer;
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import com.google.gson.Gson;
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import com.google.gson.GsonBuilder;
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import com.google.gson.JsonParseException;
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import eu.jonahbauer.wizard.common.util.SealedClassTypeAdapterFactory;
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import com.fasterxml.jackson.databind.ObjectMapper;
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import eu.jonahbauer.wizard.common.messages.ParseException;
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import eu.jonahbauer.wizard.common.util.SerializationUtil;
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import lombok.EqualsAndHashCode;
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import lombok.SneakyThrows;
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@EqualsAndHashCode
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public abstract sealed class ObserverMessage permits CardMessage, HandMessage, PredictionMessage, ScoreMessage, StateMessage, TimeoutMessage, TrickMessage, TrumpMessage, UserInputMessage {
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private static final Gson GSON = new GsonBuilder()
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.registerTypeAdapterFactory(SealedClassTypeAdapterFactory.of(ObserverMessage.class, "Message"))
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.create();
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private static final ObjectMapper MAPPER = SerializationUtil.newObjectMapper(ObserverMessage.class);
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public static ObserverMessage parse(String json) throws JsonParseException {
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return GSON.fromJson(json, ObserverMessage.class);
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public static ObserverMessage parse(String json) throws ParseException {
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return SerializationUtil.parse(json, MAPPER, ObserverMessage.class);
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}
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@Override
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@SneakyThrows
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public String toString() {
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return GSON.toJson(this, ObserverMessage.class);
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return MAPPER.writeValueAsString(this);
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}
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}
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@ -1,23 +1,22 @@
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package eu.jonahbauer.wizard.common.messages.player;
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import com.google.gson.Gson;
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import com.google.gson.GsonBuilder;
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import com.google.gson.JsonParseException;
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import eu.jonahbauer.wizard.common.util.SealedClassTypeAdapterFactory;
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import com.fasterxml.jackson.databind.ObjectMapper;
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import eu.jonahbauer.wizard.common.messages.ParseException;
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import eu.jonahbauer.wizard.common.util.SerializationUtil;
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import lombok.EqualsAndHashCode;
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import lombok.SneakyThrows;
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@EqualsAndHashCode
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public abstract sealed class PlayerMessage permits ContinueMessage, JuggleMessage, PickTrumpMessage, PlayCardMessage, PredictMessage {
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private static final Gson GSON = new GsonBuilder()
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.registerTypeAdapterFactory(SealedClassTypeAdapterFactory.of(PlayerMessage.class, "Message"))
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.create();
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private static final ObjectMapper MAPPER = SerializationUtil.newObjectMapper(PlayerMessage.class);
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public static PlayerMessage parse(String json) throws JsonParseException {
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return GSON.fromJson(json, PlayerMessage.class);
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public static PlayerMessage parse(String json) throws ParseException {
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return SerializationUtil.parse(json, MAPPER, PlayerMessage.class);
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}
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@Override
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@SneakyThrows
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public String toString() {
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return GSON.toJson(this);
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return MAPPER.writeValueAsString(this);
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}
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}
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@ -1,25 +1,23 @@
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package eu.jonahbauer.wizard.common.messages.server;
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import com.google.gson.Gson;
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import com.google.gson.GsonBuilder;
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import com.google.gson.JsonParseException;
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import com.fasterxml.jackson.databind.ObjectMapper;
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import eu.jonahbauer.wizard.common.messages.ParseException;
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import eu.jonahbauer.wizard.common.messages.observer.ObserverMessage;
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import eu.jonahbauer.wizard.common.util.SealedClassTypeAdapterFactory;
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import eu.jonahbauer.wizard.common.util.SerializationUtil;
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import lombok.EqualsAndHashCode;
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import lombok.SneakyThrows;
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@EqualsAndHashCode
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public abstract sealed class ServerMessage permits AckMessage, GameMessage, KickVotedMessage, KickedMessage, NackMessage, PlayerLeftMessage, PlayerModifiedMessage, SessionJoinedMessage, SessionListMessage, SessionModifiedMessage, SessionRemovedMessage, StartingGameMessage {
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private static final Gson GSON = new GsonBuilder()
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.registerTypeAdapterFactory(SealedClassTypeAdapterFactory.of(ServerMessage.class, "Message"))
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.registerTypeAdapterFactory(SealedClassTypeAdapterFactory.of(ObserverMessage.class, "Message"))
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.create();
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private static final ObjectMapper MAPPER = SerializationUtil.newObjectMapper(ServerMessage.class, ObserverMessage.class);
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public static ServerMessage parse(String json) throws JsonParseException {
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return GSON.fromJson(json, ServerMessage.class);
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public static ServerMessage parse(String json) throws ParseException {
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return SerializationUtil.parse(json, MAPPER, ServerMessage.class);
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}
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@Override
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@SneakyThrows
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public String toString() {
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return GSON.toJson(this, ServerMessage.class);
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return MAPPER.writeValueAsString(this);
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}
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}
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@ -1,62 +0,0 @@
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package eu.jonahbauer.wizard.common.util;
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import com.google.gson.Gson;
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import com.google.gson.TypeAdapter;
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import com.google.gson.TypeAdapterFactory;
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import com.google.gson.reflect.TypeToken;
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import com.google.gson.typeadapters.RuntimeTypeAdapterFactory;
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import org.jetbrains.annotations.Nullable;
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import java.lang.reflect.Modifier;
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import java.util.Locale;
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public final class SealedClassTypeAdapterFactory<T> implements TypeAdapterFactory {
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private final RuntimeTypeAdapterFactory<T> factory;
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public static <T> SealedClassTypeAdapterFactory<T> of(Class<T> clazz) {
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return new SealedClassTypeAdapterFactory<>(clazz, null);
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}
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|
||||
public static <T> SealedClassTypeAdapterFactory<T> of(Class<T> clazz, @Nullable String suffix) {
|
||||
return new SealedClassTypeAdapterFactory<>(clazz, suffix);
|
||||
}
|
||||
|
||||
private SealedClassTypeAdapterFactory(Class<T> clazz, @Nullable String suffix) {
|
||||
factory = RuntimeTypeAdapterFactory.of(clazz);
|
||||
register(clazz, suffix);
|
||||
}
|
||||
|
||||
private void register(Class<? extends T> clazz, String suffix) {
|
||||
for (Class<?> subclass : clazz.getPermittedSubclasses()) {
|
||||
int modifiers = subclass.getModifiers();
|
||||
if (Modifier.isFinal(modifiers) || subclass.isSealed() && !Modifier.isAbstract(modifiers)) {
|
||||
String name = subclass.getSimpleName();
|
||||
|
||||
// remove suffix
|
||||
if (suffix != null) {
|
||||
if (name.endsWith(suffix)) name = name.substring(0, name.length() - suffix.length());
|
||||
}
|
||||
|
||||
// transform camelCast to snake_case
|
||||
name = name.replaceAll("([a-z])([A-Z]+)", "$1_$2").toLowerCase(Locale.ROOT);
|
||||
|
||||
factory.registerSubtype(subclass.asSubclass(clazz), name);
|
||||
}
|
||||
if (subclass.isSealed()) {
|
||||
register(subclass.asSubclass(clazz), suffix);
|
||||
} else if (!Modifier.isFinal(modifiers)) {
|
||||
//subclass is non-sealed
|
||||
throw new IllegalArgumentException(
|
||||
"SealedClassTypeAdapterFactory does not support a type hierarchy that contains non-sealed classes. " +
|
||||
"Found non-sealed class " + subclass.getName()
|
||||
);
|
||||
}
|
||||
}
|
||||
|
||||
}
|
||||
|
||||
@Override
|
||||
public <S> TypeAdapter<S> create(Gson gson, TypeToken<S> type) {
|
||||
return factory.create(gson, type);
|
||||
}
|
||||
}
|
||||
@ -0,0 +1,87 @@
|
||||
package eu.jonahbauer.wizard.common.util;
|
||||
|
||||
import com.fasterxml.jackson.annotation.JsonCreator;
|
||||
import com.fasterxml.jackson.annotation.JsonTypeInfo;
|
||||
import com.fasterxml.jackson.core.JsonProcessingException;
|
||||
import com.fasterxml.jackson.databind.ObjectMapper;
|
||||
import com.fasterxml.jackson.databind.cfg.MapperConfig;
|
||||
import com.fasterxml.jackson.databind.introspect.*;
|
||||
import com.fasterxml.jackson.databind.jsontype.NamedType;
|
||||
import com.fasterxml.jackson.databind.module.SimpleModule;
|
||||
import com.fasterxml.jackson.module.paramnames.ParameterNamesModule;
|
||||
import eu.jonahbauer.wizard.common.messages.ParseException;
|
||||
import lombok.experimental.UtilityClass;
|
||||
|
||||
import java.lang.reflect.Modifier;
|
||||
import java.util.Locale;
|
||||
|
||||
@UtilityClass
|
||||
public class SerializationUtil {
|
||||
public static ObjectMapper newObjectMapper(Class<?>...classes) {
|
||||
var mapper = new ObjectMapper()
|
||||
.registerModule(new ParameterNamesModule(JsonCreator.Mode.PROPERTIES))
|
||||
.registerModule(new SimpleModule() {
|
||||
@Override
|
||||
public void setupModule(SetupContext context) {
|
||||
super.setupModule(context);
|
||||
for (Class<?> clazz : classes) {
|
||||
context.setMixInAnnotations(clazz, Mixin.class);
|
||||
}
|
||||
context.insertAnnotationIntrospector(new NopAnnotationIntrospector() {
|
||||
@Override
|
||||
public JsonCreator.Mode findCreatorAnnotation(MapperConfig<?> config, Annotated ann) {
|
||||
if (ann instanceof AnnotatedConstructor con) {
|
||||
var declaringClass = con.getDeclaringClass();
|
||||
for (Class<?> clazz : classes) {
|
||||
if (clazz.isAssignableFrom(declaringClass)) {
|
||||
return JsonCreator.Mode.PROPERTIES;
|
||||
}
|
||||
}
|
||||
}
|
||||
return super.findCreatorAnnotation(config, ann);
|
||||
}
|
||||
});
|
||||
}
|
||||
});
|
||||
|
||||
for (Class<?> clazz : classes) {
|
||||
registerSubtypes(mapper, clazz);
|
||||
}
|
||||
|
||||
return mapper;
|
||||
}
|
||||
|
||||
private static void registerSubtypes(ObjectMapper objectMapper, Class<?> clazz) {
|
||||
if (!clazz.isSealed()) throw new IllegalArgumentException();
|
||||
|
||||
var suffix = "Message";
|
||||
for (Class<?> subclass : clazz.getPermittedSubclasses()) {
|
||||
int modifiers = subclass.getModifiers();
|
||||
|
||||
if (Modifier.isFinal(modifiers) || subclass.isSealed() && !Modifier.isAbstract(modifiers)) {
|
||||
var name = subclass.getSimpleName();
|
||||
if (name.endsWith(suffix)) name = name.substring(0, name.length() - suffix.length());
|
||||
name = name.replaceAll("([a-z])([A-Z]+)", "$1_$2").toLowerCase(Locale.ROOT);
|
||||
|
||||
objectMapper.registerSubtypes(new NamedType(subclass, name));
|
||||
}
|
||||
|
||||
if (subclass.isSealed()) {
|
||||
registerSubtypes(objectMapper, subclass);
|
||||
} else if (!Modifier.isFinal(modifiers)) {
|
||||
throw new IllegalArgumentException("Non-sealed classes are not supported.");
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
public static <T> T parse(String json, ObjectMapper objectMapper, Class<T> clazz) throws ParseException {
|
||||
try {
|
||||
return objectMapper.readValue(json, clazz);
|
||||
} catch (JsonProcessingException e) {
|
||||
throw new ParseException(e);
|
||||
}
|
||||
}
|
||||
|
||||
@JsonTypeInfo(use = JsonTypeInfo.Id.NAME, property = "type")
|
||||
private static class Mixin {}
|
||||
}
|
||||
Loading…
Reference in New Issue