| /* |
| * 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.flink.statefun.flink.core.types; |
| |
| import com.google.protobuf.Message; |
| import java.util.HashMap; |
| import java.util.Map; |
| import javax.annotation.Nullable; |
| import javax.annotation.concurrent.NotThreadSafe; |
| import org.apache.flink.api.common.typeinfo.TypeInformation; |
| import org.apache.flink.statefun.flink.common.protobuf.ProtobufTypeInformation; |
| import org.apache.flink.statefun.flink.core.message.MessageFactoryKey; |
| import org.apache.flink.statefun.flink.core.message.MessageTypeInformation; |
| |
| /** |
| * StaticallyRegisteredTypes are types that were registered during the creation of the Stateful |
| * Functions universe. |
| */ |
| @NotThreadSafe |
| @SuppressWarnings("unchecked") |
| public final class StaticallyRegisteredTypes { |
| |
| private final Map<Class<?>, TypeInformation<?>> registeredTypes = new HashMap<>(); |
| |
| public StaticallyRegisteredTypes(MessageFactoryKey messageFactoryKey) { |
| this.messageFactoryKey = messageFactoryKey; |
| } |
| |
| private final MessageFactoryKey messageFactoryKey; |
| |
| public <T> TypeInformation<T> registerType(Class<T> type) { |
| return (TypeInformation<T>) registeredTypes.computeIfAbsent(type, this::typeInformation); |
| } |
| |
| /** |
| * Retrieves the previously registered type. This is safe to access concurrently, after the |
| * translation phase is over. |
| */ |
| @Nullable |
| <T> TypeInformation<T> getType(Class<T> valueType) { |
| return (TypeInformation<T>) registeredTypes.get(valueType); |
| } |
| |
| private TypeInformation<?> typeInformation(Class<?> valueType) { |
| if (Message.class.isAssignableFrom(valueType)) { |
| Class<Message> message = (Class<Message>) valueType; |
| return new ProtobufTypeInformation<>(message); |
| } |
| if (org.apache.flink.statefun.flink.core.message.Message.class.isAssignableFrom(valueType)) { |
| return new MessageTypeInformation(messageFactoryKey); |
| } |
| // TODO: we may want to restrict the allowed typeInfo here to theses that respect shcema |
| // evaluation. |
| return TypeInformation.of(valueType); |
| } |
| } |