| /* |
| * 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.functions; |
| |
| import it.unimi.dsi.fastutil.objects.ObjectOpenHashMap; |
| import java.util.ArrayDeque; |
| import java.util.Objects; |
| import org.apache.flink.statefun.flink.core.di.Inject; |
| import org.apache.flink.statefun.flink.core.di.Label; |
| import org.apache.flink.statefun.flink.core.message.Message; |
| import org.apache.flink.statefun.flink.core.pool.SimplePool; |
| import org.apache.flink.statefun.sdk.Address; |
| |
| final class LocalFunctionGroup { |
| private final ObjectOpenHashMap<Address, FunctionActivation> activeFunctions; |
| private final ArrayDeque<FunctionActivation> pending; |
| private final SimplePool<FunctionActivation> pool; |
| private final FunctionRepository repository; |
| private final ApplyingContext context; |
| |
| @Inject |
| LocalFunctionGroup( |
| @Label("function-repository") FunctionRepository repository, |
| @Label("applying-context") ApplyingContext context) { |
| this.activeFunctions = new ObjectOpenHashMap<>(); |
| this.pending = new ArrayDeque<>(); |
| this.pool = new SimplePool<>(FunctionActivation::new, 1024); |
| this.repository = Objects.requireNonNull(repository); |
| this.context = Objects.requireNonNull(context); |
| } |
| |
| void enqueue(Message message) { |
| FunctionActivation activation = activeFunctions.get(message.target()); |
| if (activation == null) { |
| activation = newActivation(message.target()); |
| pending.addLast(activation); |
| } |
| activation.add(message); |
| } |
| |
| boolean processNextEnvelope() { |
| FunctionActivation activation = pending.pollFirst(); |
| if (activation == null) { |
| return false; |
| } |
| activation.applyNextPendingEnvelope(context); |
| if (activation.hasPendingEnvelope()) { |
| pending.addLast(activation); |
| } else { |
| activeFunctions.remove(activation.self()); |
| activation.setFunction(null, null); |
| pool.release(activation); |
| } |
| return true; |
| } |
| |
| private FunctionActivation newActivation(Address self) { |
| LiveFunction function = repository.get(self.type()); |
| FunctionActivation activation = pool.get(); |
| activation.setFunction(self, function); |
| return activation; |
| } |
| } |