| /* |
| * 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.translation; |
| |
| import java.io.Serializable; |
| import java.util.List; |
| import java.util.Map; |
| import java.util.Objects; |
| import org.apache.flink.statefun.flink.core.StatefulFunctionsConfig; |
| import org.apache.flink.statefun.flink.core.StatefulFunctionsUniverse; |
| import org.apache.flink.statefun.flink.core.StatefulFunctionsUniverseProvider; |
| import org.apache.flink.statefun.flink.core.feedback.FeedbackKey; |
| import org.apache.flink.statefun.flink.core.message.Message; |
| import org.apache.flink.statefun.flink.core.message.RoutableMessage; |
| import org.apache.flink.statefun.flink.core.types.StaticallyRegisteredTypes; |
| import org.apache.flink.statefun.sdk.FunctionType; |
| import org.apache.flink.statefun.sdk.StatefulFunctionProvider; |
| import org.apache.flink.statefun.sdk.io.EgressIdentifier; |
| import org.apache.flink.streaming.api.datastream.DataStream; |
| |
| public class EmbeddedTranslator { |
| private final StatefulFunctionsConfig configuration; |
| private final FeedbackKey<Message> feedbackKey; |
| |
| public EmbeddedTranslator(StatefulFunctionsConfig config, FeedbackKey<Message> feedbackKey) { |
| this.configuration = config; |
| this.feedbackKey = feedbackKey; |
| } |
| |
| public <T extends StatefulFunctionProvider & Serializable> |
| Map<EgressIdentifier<?>, DataStream<?>> translate( |
| List<DataStream<RoutableMessage>> ingresses, |
| Iterable<EgressIdentifier<?>> egressesIds, |
| Map<FunctionType, T> functions) { |
| |
| configuration.setProvider(new EmbeddedUniverseProvider<>(functions)); |
| |
| StaticallyRegisteredTypes types = new StaticallyRegisteredTypes(configuration.getFactoryKey()); |
| Sources sources = Sources.create(types, ingresses); |
| Sinks sinks = Sinks.create(types, egressesIds); |
| |
| StatefulFunctionTranslator translator = |
| new StatefulFunctionTranslator(feedbackKey, configuration); |
| |
| return translator.translate(sources, sinks); |
| } |
| |
| private static class EmbeddedUniverseProvider<T extends StatefulFunctionProvider & Serializable> |
| implements StatefulFunctionsUniverseProvider { |
| |
| private static final long serialVersionUID = 1; |
| |
| private Map<FunctionType, T> functions; |
| |
| public EmbeddedUniverseProvider(Map<FunctionType, T> functions) { |
| this.functions = Objects.requireNonNull(functions); |
| } |
| |
| @Override |
| public StatefulFunctionsUniverse get( |
| ClassLoader classLoader, StatefulFunctionsConfig configuration) { |
| StatefulFunctionsUniverse u = new StatefulFunctionsUniverse(configuration.getFactoryKey()); |
| functions.forEach(u::bindFunctionProvider); |
| return u; |
| } |
| } |
| } |