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Add solution for intercepting topic, subscription and dispatcher inst…
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129
...-broker/src/test/java/org/apache/pulsar/broker/testinterceptor/BrokerTestInterceptor.java
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| /* | ||
| * 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.pulsar.broker.testinterceptor; | ||
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| import java.util.Map; | ||
| import java.util.function.Function; | ||
| import lombok.Getter; | ||
| import lombok.Setter; | ||
| import org.apache.bookkeeper.mledger.ManagedCursor; | ||
| import org.apache.bookkeeper.mledger.ManagedLedger; | ||
| import org.apache.pulsar.broker.BrokerTestUtil; | ||
| import org.apache.pulsar.broker.ServiceConfiguration; | ||
| import org.apache.pulsar.broker.service.BrokerService; | ||
| import org.apache.pulsar.broker.service.Consumer; | ||
| import org.apache.pulsar.broker.service.Dispatcher; | ||
| import org.apache.pulsar.broker.service.Topic; | ||
| import org.apache.pulsar.broker.service.TopicFactory; | ||
| import org.apache.pulsar.broker.service.persistent.PersistentSubscription; | ||
| import org.apache.pulsar.broker.service.persistent.PersistentTopic; | ||
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| /** | ||
| * A test interceptor for broker tests that allows to decorate persistent topics, subscriptions and dispatchers. | ||
| */ | ||
| public class BrokerTestInterceptor { | ||
| public static final BrokerTestInterceptor INSTANCE = new BrokerTestInterceptor(); | ||
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| // Suppress default constructor for noninstantiability | ||
| private BrokerTestInterceptor() { | ||
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| } | ||
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| public static class TestTopicFactory implements TopicFactory { | ||
| @Override | ||
| public <T extends Topic> T create(String topic, ManagedLedger ledger, BrokerService brokerService, | ||
| Class<T> topicClazz) { | ||
| if (!topicClazz.isAssignableFrom(PersistentTopic.class)) { | ||
| throw new UnsupportedOperationException("Unsupported topic class"); | ||
| } | ||
| return topicClazz.cast( | ||
| INSTANCE.getPersistentTopicDecorator().apply(new TestTopic(topic, ledger, brokerService))); | ||
| } | ||
| } | ||
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| static class TestTopic extends PersistentTopic { | ||
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| public TestTopic(String topic, ManagedLedger ledger, BrokerService brokerService) { | ||
| super(topic, ledger, brokerService); | ||
| } | ||
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| @Override | ||
| protected PersistentSubscription createPersistentSubscription(String subscriptionName, ManagedCursor cursor, | ||
| Boolean replicated, | ||
| Map<String, String> subscriptionProperties) { | ||
| return INSTANCE.getPersistentSubscriptionDecorator() | ||
| .apply(new TestSubscription(this, subscriptionName, cursor, replicated, subscriptionProperties)); | ||
| } | ||
| } | ||
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| static class TestSubscription extends PersistentSubscription { | ||
| public TestSubscription(PersistentTopic topic, String subscriptionName, ManagedCursor cursor, | ||
| Boolean replicated, | ||
| Map<String, String> subscriptionProperties) { | ||
| super(topic, subscriptionName, cursor, replicated, subscriptionProperties); | ||
| } | ||
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| @Override | ||
| protected Dispatcher reuseOrCreateDispatcher(Dispatcher dispatcher, | ||
| Consumer consumer) { | ||
| Dispatcher previousInstance = dispatcher; | ||
| dispatcher = super.reuseOrCreateDispatcher(dispatcher, consumer); | ||
| if (dispatcher != previousInstance) { | ||
| dispatcher = INSTANCE.getDispatcherDecorator().apply(dispatcher); | ||
| } | ||
| return dispatcher; | ||
| } | ||
| } | ||
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| @Getter | ||
| @Setter | ||
| private Function<PersistentTopic, PersistentTopic> persistentTopicDecorator = Function.identity(); | ||
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| @Getter | ||
| @Setter | ||
| private Function<PersistentSubscription, PersistentSubscription> persistentSubscriptionDecorator = Function.identity(); | ||
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| @Getter | ||
| @Setter | ||
| private Function<Dispatcher, Dispatcher> dispatcherDecorator = Function.identity(); | ||
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| public void reset() { | ||
| persistentTopicDecorator = Function.identity(); | ||
| persistentSubscriptionDecorator = Function.identity(); | ||
| dispatcherDecorator = Function.identity(); | ||
| } | ||
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| public void configure(ServiceConfiguration conf) { | ||
| conf.setTopicFactoryClassName(TestTopicFactory.class.getName()); | ||
| } | ||
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| public <T extends Dispatcher> void applyDispatcherSpyDecorator(Class<T> dispatcherClass, | ||
| java.util.function.Consumer<T> spyCustomizer) { | ||
| setDispatcherDecorator(createDispatcherSpyDecorator(dispatcherClass, spyCustomizer)); | ||
| } | ||
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| public static <T extends Dispatcher> Function<Dispatcher, Dispatcher> createDispatcherSpyDecorator( | ||
| Class<T> dispatcherClass, java.util.function.Consumer<T> spyCustomizer) { | ||
| return dispatcher -> { | ||
| Dispatcher spy = BrokerTestUtil.spyWithoutRecordingInvocations(dispatcher); | ||
| spyCustomizer.accept(dispatcherClass.cast(spy)); | ||
| return spy; | ||
| }; | ||
| } | ||
| } |