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Fix Hazelcast Cache auto-configuration ordering
Spring Boot supports the automatic configuration of an additional HazelcastInstance if one already exists and an explicit property has been set to use a different configuration for caching. So three cases are supported really: no `HazelcastInstance` exists so we need to create one anyway or an `HazelcastInstance` already exists; in that latter case, we should either reuse it or create a new one. Unfortunately, the conditions that checked those three use cases were not ordered consistently and we could easily get in a situation where both conditions were evaluated. This commit makes sure that we first check if an `HazelcastInstance` exists and then (and only then) we create the missing `HazelcastInstance` used for caching. The tests have also been improved to validate the proper `HazelcastInstance` is used for caching. Closes gh-5181
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14a5feacea
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@ -1,5 +1,5 @@
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/*
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* Copyright 2012-2015 the original author or authors.
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* Copyright 2012-2016 the original author or authors.
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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@ -16,25 +16,17 @@
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package org.springframework.boot.autoconfigure.cache;
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import java.io.Closeable;
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import java.io.IOException;
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import com.hazelcast.core.Hazelcast;
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import com.hazelcast.core.HazelcastInstance;
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import com.hazelcast.spring.cache.HazelcastCacheManager;
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import org.springframework.beans.factory.annotation.Autowired;
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import org.springframework.boot.autoconfigure.condition.ConditionalOnClass;
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import org.springframework.boot.autoconfigure.condition.ConditionalOnMissingBean;
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import org.springframework.boot.autoconfigure.condition.ConditionalOnSingleCandidate;
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import org.springframework.boot.autoconfigure.hazelcast.HazelcastAutoConfiguration;
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import org.springframework.boot.autoconfigure.hazelcast.HazelcastConfigResourceCondition;
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import org.springframework.boot.autoconfigure.hazelcast.HazelcastInstanceFactory;
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import org.springframework.cache.CacheManager;
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import org.springframework.context.annotation.Bean;
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import org.springframework.context.annotation.Conditional;
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import org.springframework.context.annotation.Configuration;
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import org.springframework.core.io.Resource;
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import org.springframework.context.annotation.Import;
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/**
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* Hazelcast cache configuration. Can either reuse the {@link HazelcastInstance} that has
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@ -49,84 +41,10 @@ import org.springframework.core.io.Resource;
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* @see HazelcastConfigResourceCondition
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*/
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@Configuration
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@ConditionalOnClass({ HazelcastInstance.class, HazelcastCacheManager.class })
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@ConditionalOnClass({HazelcastInstance.class, HazelcastCacheManager.class})
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@ConditionalOnMissingBean(CacheManager.class)
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@Conditional(CacheCondition.class)
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@Import({HazelcastInstanceConfiguration.Existing.class, HazelcastInstanceConfiguration.Specific.class})
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class HazelcastCacheConfiguration {
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@Configuration
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@ConditionalOnSingleCandidate(HazelcastInstance.class)
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static class ExistingHazelcastInstanceConfiguration {
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@Autowired
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private CacheProperties cacheProperties;
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@Bean
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public HazelcastCacheManager cacheManager(
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HazelcastInstance existingHazelcastInstance) throws IOException {
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Resource config = this.cacheProperties.getHazelcast().getConfig();
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Resource location = this.cacheProperties.resolveConfigLocation(config);
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if (location != null) {
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HazelcastInstance cacheHazelcastInstance = new HazelcastInstanceFactory(
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location).getHazelcastInstance();
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return new CloseableHazelcastCacheManager(cacheHazelcastInstance);
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}
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return new HazelcastCacheManager(existingHazelcastInstance);
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}
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}
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@Configuration
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@ConditionalOnMissingBean(HazelcastInstance.class)
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@Conditional(ConfigAvailableCondition.class)
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static class DefaultHazelcastInstanceConfiguration {
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@Autowired
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private CacheProperties cacheProperties;
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@Bean
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public HazelcastInstance hazelcastInstance() throws IOException {
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Resource config = this.cacheProperties.getHazelcast().getConfig();
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Resource location = this.cacheProperties.resolveConfigLocation(config);
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if (location != null) {
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new HazelcastInstanceFactory(location).getHazelcastInstance();
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}
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return Hazelcast.newHazelcastInstance();
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}
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@Bean
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public HazelcastCacheManager cacheManager() throws IOException {
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return new HazelcastCacheManager(hazelcastInstance());
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}
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}
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/**
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* {@link HazelcastConfigResourceCondition} that checks if the
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* {@code spring.cache.hazelcast.config} configuration key is defined.
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*/
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static class ConfigAvailableCondition extends HazelcastConfigResourceCondition {
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ConfigAvailableCondition() {
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super("spring.cache.hazelcast", "config");
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}
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}
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private static class CloseableHazelcastCacheManager extends HazelcastCacheManager
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implements Closeable {
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private final HazelcastInstance hazelcastInstance;
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CloseableHazelcastCacheManager(HazelcastInstance hazelcastInstance) {
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super(hazelcastInstance);
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this.hazelcastInstance = hazelcastInstance;
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}
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@Override
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public void close() throws IOException {
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this.hazelcastInstance.shutdown();
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}
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}
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}
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@ -0,0 +1,120 @@
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/*
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* Copyright 2012-2016 the original author or authors.
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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package org.springframework.boot.autoconfigure.cache;
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import java.io.Closeable;
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import java.io.IOException;
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import com.hazelcast.core.Hazelcast;
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import com.hazelcast.core.HazelcastInstance;
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import com.hazelcast.spring.cache.HazelcastCacheManager;
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import org.springframework.beans.factory.annotation.Autowired;
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import org.springframework.boot.autoconfigure.condition.ConditionalOnMissingBean;
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import org.springframework.boot.autoconfigure.condition.ConditionalOnSingleCandidate;
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import org.springframework.boot.autoconfigure.hazelcast.HazelcastConfigResourceCondition;
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import org.springframework.boot.autoconfigure.hazelcast.HazelcastInstanceFactory;
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import org.springframework.context.annotation.Bean;
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import org.springframework.context.annotation.Conditional;
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import org.springframework.context.annotation.Configuration;
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import org.springframework.core.io.Resource;
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/**
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* Actual {@link HazelcastInstance} configurations imported by
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* {@link HazelcastCacheConfiguration}.
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*
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* @author Stephane Nicoll
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*/
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abstract class HazelcastInstanceConfiguration {
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@Configuration
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@ConditionalOnSingleCandidate(HazelcastInstance.class)
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static class Existing {
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@Autowired
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private CacheProperties cacheProperties;
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@Bean
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public HazelcastCacheManager cacheManager(
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HazelcastInstance existingHazelcastInstance) throws IOException {
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Resource config = this.cacheProperties.getHazelcast().getConfig();
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Resource location = this.cacheProperties.resolveConfigLocation(config);
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if (location != null) {
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HazelcastInstance cacheHazelcastInstance = new HazelcastInstanceFactory(
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location).getHazelcastInstance();
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return new CloseableHazelcastCacheManager(cacheHazelcastInstance);
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}
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return new HazelcastCacheManager(existingHazelcastInstance);
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}
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}
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@Configuration
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@ConditionalOnMissingBean(HazelcastInstance.class)
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@Conditional(ConfigAvailableCondition.class)
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static class Specific {
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@Autowired
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private CacheProperties cacheProperties;
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@Bean
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public HazelcastInstance hazelcastInstance() throws IOException {
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Resource config = this.cacheProperties.getHazelcast().getConfig();
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Resource location = this.cacheProperties.resolveConfigLocation(config);
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if (location != null) {
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return new HazelcastInstanceFactory(location).getHazelcastInstance();
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}
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return Hazelcast.newHazelcastInstance();
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}
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@Bean
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public HazelcastCacheManager cacheManager() throws IOException {
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return new HazelcastCacheManager(hazelcastInstance());
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}
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}
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/**
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* {@link HazelcastConfigResourceCondition} that checks if the
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* {@code spring.cache.hazelcast.config} configuration key is defined.
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*/
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static class ConfigAvailableCondition extends HazelcastConfigResourceCondition {
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ConfigAvailableCondition() {
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super("spring.cache.hazelcast", "config");
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}
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}
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private static class CloseableHazelcastCacheManager extends HazelcastCacheManager
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implements Closeable {
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private final HazelcastInstance hazelcastInstance;
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CloseableHazelcastCacheManager(HazelcastInstance hazelcastInstance) {
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super(hazelcastInstance);
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this.hazelcastInstance = hazelcastInstance;
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}
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@Override
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public void close() throws IOException {
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this.hazelcastInstance.shutdown();
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}
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}
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}
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@ -1,5 +1,5 @@
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/*
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* Copyright 2012-2015 the original author or authors.
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* Copyright 2012-2016 the original author or authors.
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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@ -70,6 +70,7 @@ import org.springframework.data.redis.core.RedisTemplate;
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import static org.hamcrest.CoreMatchers.equalTo;
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import static org.hamcrest.CoreMatchers.instanceOf;
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import static org.hamcrest.CoreMatchers.sameInstance;
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import static org.hamcrest.Matchers.contains;
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import static org.hamcrest.Matchers.containsInAnyOrder;
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import static org.hamcrest.Matchers.empty;
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@ -344,16 +345,21 @@ public class CacheAutoConfigurationTests {
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assertThat(cacheManager.getCacheNames(), containsInAnyOrder("defaultCache"));
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assertThat(cacheManager.getCacheNames(), hasSize(1));
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assertThat(this.context.getBean(HazelcastInstance.class),
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equalTo(new DirectFieldAccessor(cacheManager)
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.getPropertyValue("hazelcastInstance")));
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equalTo(getHazelcastInstance(cacheManager)));
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}
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@Test
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public void hazelcastCacheWithConfig() {
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public void hazelcastCacheWithConfig() throws IOException {
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load(DefaultCacheConfiguration.class, "spring.cache.type=hazelcast",
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"spring.cache.hazelcast.config=org/springframework/boot/autoconfigure/cache/hazelcast-specific.xml");
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HazelcastInstance hazelcastInstance = this.context
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.getBean(HazelcastInstance.class);
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HazelcastCacheManager cacheManager = validateCacheManager(
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HazelcastCacheManager.class);
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HazelcastInstance actual = getHazelcastInstance(cacheManager);
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assertThat(actual, sameInstance(hazelcastInstance));
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assertThat(actual.getConfig().getConfigurationUrl(), equalTo(new ClassPathResource(
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"org/springframework/boot/autoconfigure/cache/hazelcast-specific.xml").getURL()));
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cacheManager.getCache("foobar");
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assertThat(cacheManager.getCacheNames(), containsInAnyOrder("foobar"));
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assertThat(cacheManager.getCacheNames(), hasSize(1));
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@ -372,9 +378,7 @@ public class CacheAutoConfigurationTests {
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load(HazelcastCustomHazelcastInstance.class, "spring.cache.type=hazelcast");
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HazelcastCacheManager cacheManager = validateCacheManager(
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HazelcastCacheManager.class);
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assertThat(
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new DirectFieldAccessor(cacheManager)
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.getPropertyValue("hazelcastInstance"),
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assertThat(getHazelcastInstance(cacheManager),
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equalTo(this.context.getBean("customHazelcastInstance")));
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}
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@ -392,8 +396,7 @@ public class CacheAutoConfigurationTests {
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HazelcastCacheManager.class);
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HazelcastInstance hazelcastInstance = this.context
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.getBean(HazelcastInstance.class);
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assertThat(new DirectFieldAccessor(cacheManager).getPropertyValue(
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"hazelcastInstance"), equalTo((Object) hazelcastInstance));
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assertThat(getHazelcastInstance(cacheManager), equalTo((Object) hazelcastInstance));
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assertThat(hazelcastInstance.getConfig().getConfigurationFile(),
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equalTo(new ClassPathResource(mainConfig).getFile()));
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}
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@ -416,8 +419,7 @@ public class CacheAutoConfigurationTests {
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.getBean(HazelcastInstance.class);
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HazelcastCacheManager cacheManager = validateCacheManager(
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HazelcastCacheManager.class);
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HazelcastInstance cacheHazelcastInstance = (HazelcastInstance) new DirectFieldAccessor(
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cacheManager).getPropertyValue("hazelcastInstance");
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HazelcastInstance cacheHazelcastInstance = getHazelcastInstance(cacheManager);
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assertThat(cacheHazelcastInstance, not(hazelcastInstance)); // Our custom
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assertThat(hazelcastInstance.getConfig().getConfigurationFile(),
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equalTo(new ClassPathResource(mainConfig).getFile()));
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@ -570,6 +572,11 @@ public class CacheAutoConfigurationTests {
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this.context = applicationContext;
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}
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private static HazelcastInstance getHazelcastInstance(HazelcastCacheManager cacheManager) {
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return (HazelcastInstance) new DirectFieldAccessor(cacheManager)
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.getPropertyValue("hazelcastInstance");
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}
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@Configuration
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static class EmptyConfiguration {
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