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SlowLoggers using single logger (#56708)
Slow loggers should use single shared logger as otherwise when index is deleted the log4j logger will remain reachable (log4j is caching) and will create a memory leak. closes #56171
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48 changes: 48 additions & 0 deletions
48
server/src/test/java/org/elasticsearch/common/logging/MockAppender.java
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| /* | ||
| * Licensed to Elasticsearch under one or more contributor | ||
| * license agreements. See the NOTICE file distributed with | ||
| * this work for additional information regarding copyright | ||
| * ownership. Elasticsearch 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.elasticsearch.common.logging; | ||
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| import org.apache.logging.log4j.core.LogEvent; | ||
| import org.apache.logging.log4j.core.appender.AbstractAppender; | ||
| import org.apache.logging.log4j.core.filter.RegexFilter; | ||
| import org.apache.logging.log4j.message.ParameterizedMessage; | ||
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| public class MockAppender extends AbstractAppender { | ||
| public LogEvent lastEvent; | ||
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| public MockAppender(final String name) throws IllegalAccessException { | ||
| super(name, RegexFilter.createFilter(".*(\n.*)*", new String[0], false, null, null), null); | ||
| } | ||
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| @Override | ||
| public void append(LogEvent event) { | ||
| lastEvent = event.toImmutable(); | ||
| } | ||
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| ParameterizedMessage lastParameterizedMessage() { | ||
| return (ParameterizedMessage) lastEvent.getMessage(); | ||
| } | ||
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| public LogEvent getLastEventAndReset() { | ||
| LogEvent toReturn = lastEvent; | ||
| lastEvent = null; | ||
| return toReturn; | ||
| } | ||
| } |
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