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[improve][misc] Use shared Jackson ObjectMapper to reduce overhead an…
…d remove ThreadLocal solution (#19160)
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buildtools/src/main/java/org/apache/pulsar/tests/SingletonCleanerListener.java
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,99 @@ | ||
| /* | ||
| * 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.tests; | ||
|
|
||
| import java.lang.reflect.InvocationTargetException; | ||
| import java.lang.reflect.Method; | ||
| import org.apache.commons.lang3.ClassUtils; | ||
| import org.slf4j.Logger; | ||
| import org.slf4j.LoggerFactory; | ||
|
|
||
| /** | ||
| * This TestNG listener contains cleanup for some singletons or caches. | ||
| */ | ||
| public class SingletonCleanerListener extends BetweenTestClassesListenerAdapter { | ||
| private static final Logger LOG = LoggerFactory.getLogger(SingletonCleanerListener.class); | ||
| private static final Method OBJECTMAPPERFACTORY_CLEANCACHES_METHOD; | ||
| private static final Method OBJECTMAPPERFACTORY_REFRESH_METHOD; | ||
|
|
||
| static { | ||
| Class<?> objectMapperFactoryClazz = | ||
| null; | ||
| try { | ||
| objectMapperFactoryClazz = ClassUtils.getClass("org.apache.pulsar.common.util.ObjectMapperFactory"); | ||
| } catch (ClassNotFoundException e) { | ||
| LOG.warn("Cannot find ObjectMapperFactory class", e); | ||
| } | ||
|
|
||
| Method clearCachesMethod = null; | ||
| try { | ||
| if (objectMapperFactoryClazz != null) { | ||
| clearCachesMethod = | ||
| objectMapperFactoryClazz | ||
| .getMethod("clearCaches"); | ||
| } | ||
| } catch (NoSuchMethodException e) { | ||
| LOG.warn("Cannot find method for cleaning singleton ObjectMapper caches", e); | ||
| } | ||
| OBJECTMAPPERFACTORY_CLEANCACHES_METHOD = clearCachesMethod; | ||
|
|
||
| Method refreshMethod = null; | ||
| try { | ||
| if (objectMapperFactoryClazz != null) { | ||
| refreshMethod = | ||
| objectMapperFactoryClazz | ||
| .getMethod("refresh"); | ||
| } | ||
| } catch (NoSuchMethodException e) { | ||
| LOG.warn("Cannot find method for refreshing singleton ObjectMapper instances", e); | ||
| } | ||
| OBJECTMAPPERFACTORY_REFRESH_METHOD = refreshMethod; | ||
| } | ||
|
|
||
| @Override | ||
| protected void onBetweenTestClasses(Class<?> endedTestClass, Class<?> startedTestClass) { | ||
| cleanObjectMapperFactoryCaches(); | ||
| refreshObjectMapperFactory(); | ||
| } | ||
|
|
||
| // Call ObjectMapperFactory.clearCaches() using reflection to clear up classes held in | ||
| // the singleton Jackson ObjectMapper instances | ||
| private static void cleanObjectMapperFactoryCaches() { | ||
| if (OBJECTMAPPERFACTORY_CLEANCACHES_METHOD != null) { | ||
| try { | ||
| OBJECTMAPPERFACTORY_CLEANCACHES_METHOD.invoke(null); | ||
| } catch (IllegalAccessException | InvocationTargetException e) { | ||
| LOG.warn("Cannot clean singleton ObjectMapper caches", e); | ||
| } | ||
| } | ||
| } | ||
|
|
||
| // Call ObjectMapperFactory.refresh() using reflection to release ObjectMapper instances | ||
| // that might be holding on classloaders and classes | ||
| private static void refreshObjectMapperFactory() { | ||
| if (OBJECTMAPPERFACTORY_REFRESH_METHOD != null) { | ||
| try { | ||
| OBJECTMAPPERFACTORY_REFRESH_METHOD.invoke(null); | ||
| } catch (IllegalAccessException | InvocationTargetException e) { | ||
| LOG.warn("Cannot refresh ObjectMapper instances", e); | ||
| } | ||
| } | ||
| } | ||
| } |
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