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Merge pull request #302 from dromara/dev
Unified ServiceLoader Optimize
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78
common/src/main/java/org/dromara/dynamictp/common/util/ExtensionServiceLoader.java
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,78 @@ | ||
| /* | ||
| * 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. | ||
| */ | ||
|
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| package org.dromara.dynamictp.common.util; | ||
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| import org.apache.commons.collections4.CollectionUtils; | ||
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| import java.util.ArrayList; | ||
| import java.util.List; | ||
| import java.util.Map; | ||
| import java.util.ServiceLoader; | ||
| import java.util.concurrent.ConcurrentHashMap; | ||
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| /** | ||
| * Unified ServiceLoader Helper | ||
| * | ||
| * @author xs.Tao | ||
| * @since 1.1.4 | ||
| */ | ||
| public class ExtensionServiceLoader { | ||
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| private static final Map<Class<?>, List<?>> EXTENSION_MAP = new ConcurrentHashMap<>(); | ||
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| private ExtensionServiceLoader() { | ||
| } | ||
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| /** | ||
| * load service | ||
| * @param clazz SPI interface | ||
| * @return services | ||
| * @param <T> interface class | ||
| */ | ||
| @SuppressWarnings("unchecked") | ||
| public static <T> List<T> get(Class<T> clazz) { | ||
| List<T> services = (List<T>) EXTENSION_MAP.get(clazz); | ||
| if (CollectionUtils.isEmpty(services)) { | ||
| services = load(clazz); | ||
| if (CollectionUtils.isNotEmpty(services)) { | ||
| EXTENSION_MAP.put(clazz, services); | ||
| } | ||
| } | ||
| return services; | ||
| } | ||
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| /** | ||
| * load the first service | ||
| * @param clazz SPI interface | ||
| * @return service | ||
| * @param <T> interface class | ||
| */ | ||
| public static <T> T getFirst(Class<T> clazz) { | ||
| List<T> services = get(clazz); | ||
| return CollectionUtils.isEmpty(services) ? null : services.get(0); | ||
| } | ||
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| private static <T> List<T> load(Class<T> clazz) { | ||
| ServiceLoader<T> serviceLoader = ServiceLoader.load(clazz); | ||
| List<T> services = new ArrayList<>(); | ||
| for (T service : serviceLoader) { | ||
| services.add(service); | ||
| } | ||
| return services; | ||
| } | ||
| } |
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38 changes: 38 additions & 0 deletions
38
...mmon/src/test/java/org/dromara/dynamictp/test/common/util/ExtensionServiceLoaderTest.java
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,38 @@ | ||
| /* | ||
| * 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. | ||
| */ | ||
|
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| package org.dromara.dynamictp.test.common.util; | ||
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| import org.dromara.dynamictp.common.util.ExtensionServiceLoader; | ||
| import org.dromara.dynamictp.core.plugin.DtpInterceptor; | ||
| import org.junit.Test; | ||
| import org.junit.jupiter.api.Assertions; | ||
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| import java.util.List; | ||
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| /** | ||
| * ExtensionServiceLoader test case | ||
| */ | ||
| public class ExtensionServiceLoaderTest { | ||
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| @Test | ||
| public void test(){ | ||
| List<DtpInterceptor> loadedInterceptors = ExtensionServiceLoader.get(DtpInterceptor.class); | ||
| Assertions.assertTrue(loadedInterceptors.stream().anyMatch(it-> it instanceof TestInterceptorLoader)); | ||
| } | ||
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| } |
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