| /* |
| * 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.cassandra.simulator.asm; |
| |
| import java.util.Collections; |
| import java.util.HashMap; |
| import java.util.Map; |
| import java.util.concurrent.atomic.AtomicIntegerFieldUpdater; |
| import java.util.concurrent.atomic.AtomicLongFieldUpdater; |
| import java.util.concurrent.atomic.AtomicReferenceFieldUpdater; |
| import java.util.stream.Stream; |
| |
| import org.apache.cassandra.utils.Nemesis; |
| import org.reflections.Reflections; |
| import org.reflections.scanners.FieldAnnotationsScanner; |
| import org.reflections.util.ConfigurationBuilder; |
| |
| import static java.util.Collections.emptyMap; |
| import static org.apache.cassandra.simulator.asm.InterceptClasses.dotsToSlashes; |
| import static org.apache.cassandra.simulator.asm.NemesisFieldKind.SIMPLE; |
| |
| /** |
| * Define classes that receive special handling. |
| * At present all instance methods invoked on such classes have nemesis points inserted either side of them. |
| */ |
| public class NemesisFieldSelectors |
| { |
| public static final Map<String, Map<String, NemesisFieldKind>> classToFieldToNemesis; |
| |
| static |
| { |
| Map<Class<?>, NemesisFieldKind> byClass = new HashMap<>(); |
| for (NemesisFieldKind type : NemesisFieldKind.values()) |
| type.classes.forEach(c -> byClass.put(c, type)); |
| |
| Stream.of(AtomicIntegerFieldUpdater.class, AtomicLongFieldUpdater.class, AtomicReferenceFieldUpdater.class) |
| .forEach(c -> byClass.put(c, NemesisFieldKind.ATOMICUPDATERX)); |
| |
| Map<String, Map<String, NemesisFieldKind>> byField = new HashMap<>(); |
| new Reflections(ConfigurationBuilder.build("org.apache.cassandra").addScanners(new FieldAnnotationsScanner())) |
| .getFieldsAnnotatedWith(Nemesis.class) |
| .forEach(field -> byField.computeIfAbsent(dotsToSlashes(field.getDeclaringClass()), ignore -> new HashMap<>()) |
| .put(field.getName(), byClass.getOrDefault(field.getType(), SIMPLE))); |
| classToFieldToNemesis = Collections.unmodifiableMap(byField); |
| } |
| |
| public static NemesisFieldKind.Selector get() |
| { |
| return (name, field) -> classToFieldToNemesis.getOrDefault(name, emptyMap()).get(field); |
| } |
| } |