gpt4 book ai didi

java - Log4j2 - 配置 RolloverStrategy 以删除旧日志文件

转载 作者:搜寻专家 更新时间:2023-11-01 02:40:21 25 4
gpt4 key购买 nike

我正在尝试配置 log4j 以仅保留指定数量的备份文件或保留不早于某个年龄的文件。最终,我想要基于时间 [daily] 的触发策略 并保留 30 个备份文件或删除超过 30 天的文件。

经过一些研究后,我了解到在使用时间策略 时我无法指定备份文件的最大数量,但是我遇到了这个问题 https://issues.apache.org/jira/browse/LOG4J2-435和这个文档片段 http://logging.apache.org/log4j/2.x/manual/appenders.html#CustomDeleteOnRollover描述了如何根据文件的年龄和名称模式删除文件。现在,我尝试在简单示例中应用此配置,该示例每分钟创建一个新备份文件,并自动删除 3 分钟之前的文件。为此,我使用以下 pom 创建了简单的 maven 项目:

<?xml version="1.0" encoding="UTF-8"?>
<project xmlns="http://maven.apache.org/POM/4.0.0"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
<modelVersion>4.0.0</modelVersion>

<groupId>test</groupId>
<artifactId>test</artifactId>
<version>1.0-SNAPSHOT</version>

<dependencies>
<dependency>
<groupId>org.apache.logging.log4j</groupId>
<artifactId>log4j-api</artifactId>
<version>2.5</version>
</dependency>
<dependency>
<groupId>org.apache.logging.log4j</groupId>
<artifactId>log4j-core</artifactId>
<version>2.5</version>
</dependency>
</dependencies>

<build>
<plugins>
<plugin>
<groupId>org.apache.maven.plugins</groupId>
<artifactId>maven-dependency-plugin</artifactId>
<executions>
<execution>
<id>copy-dependencies</id>
<phase>prepare-package</phase>
<goals>
<goal>copy-dependencies</goal>
</goals>
<configuration>
<outputDirectory>${project.build.directory}/lib</outputDirectory>
<overWriteReleases>false</overWriteReleases>
<overWriteSnapshots>false</overWriteSnapshots>
<overWriteIfNewer>true</overWriteIfNewer>
</configuration>
</execution>
</executions>
</plugin>
<plugin>
<groupId>org.apache.maven.plugins</groupId>
<artifactId>maven-jar-plugin</artifactId>
<configuration>
<archive>
<manifest>
<addClasspath>true</addClasspath>
<classpathPrefix>lib/</classpathPrefix>
<mainClass>test.Main</mainClass>
</manifest>
</archive>
</configuration>
</plugin>
</plugins>
</build>
</project>

log4j2.xml 配置文件:

<?xml version="1.0" encoding="UTF-8"?>
<Configuration status="warn" name="MyApp" packages="">
<Appenders>
<RollingFile name="RollingFile" fileName="D:/app.log"
filePattern="D:/app-%d{yyyy-MM-dd-HH-mm-ss}.log">
<PatternLayout>
<Pattern>%d %p %c{1.} [%t] %m%n</Pattern>
</PatternLayout>
<Policies>
<TimeBasedTriggeringPolicy interval="60" modulate="true"/>
<!--<SizeBasedTriggeringPolicy size="250 MB"/>-->
</Policies>
<DefaultRolloverStrategy>
<Delete basePath="D:" maxDepth="1">
<IfFileName glob="app-*.log" />
<IfLastModified age="3m" />
</Delete>
</DefaultRolloverStrategy>
</RollingFile>
</Appenders>
<Loggers>
<Root level="trace">
<AppenderRef ref="RollingFile"/>
</Root>
</Loggers>
</Configuration>

和主类:

package test;


import org.apache.logging.log4j.LogManager;
import org.apache.logging.log4j.Logger;

/**
* Created by mzurawski on 2015-12-22.
*/
public class Main {

final static Logger logger = LogManager.getLogger(Main.class);

public static void main(String[] args) {
runMe("test");
}

private static void runMe(String parameterParam){
String parameter;
for(int i=0; i<100; ++i) {
parameter = parameterParam + i;
System.out.println("log iteration: "+i);
if (logger.isDebugEnabled()) {
logger.debug("This is debug : " + parameter);
}

if (logger.isInfoEnabled()) {
logger.info("This is info : " + parameter);
}

logger.warn("This is warn : " + parameter);
logger.error("This is error : " + parameter);
logger.fatal("This is fatal : " + parameter);
try {
Thread.sleep(60000);
} catch (InterruptedException e) {
e.printStackTrace();
}
}
}
}

构建此程序后,您可以使用以下命令运行它(注意硬编码光盘位置):

java -jar test-1.0-SNAPSHOT.jar

到目前为止,日志文件每分钟创建一次,但没有旧文件被删除。我怎样才能让这个测试配置工作?我应该如何修改此配置,以便最终只保留最近 30 天的文件?

感谢您的帮助。

最佳答案

您的配置和测试程序看起来不错。我测试了您的 Main.java 和 log4j2.xml 配置,它按预期工作:每一分钟触发翻转,删除操作扫描基本目录并仅删除超过 3 分钟的文件。

我没有创建独立应用程序,而是在我的 IDE 中进行了测试。 (看起来您正在将 log4j jar 文件以及您的类和配置隐藏到一个 jar 中。这会导致问题吗?)

通过将配置更改为 <Configuration status="TRACE" ... 启用 log4j 内部日志记录后,我得到以下输出:

  • 第 3 次迭代:尚未删除任何文件:最旧的文件存在 173 秒。
  • 迭代 4:最旧的文件被删除。

...(省略启动日志)...

log iteration: 3
2016-01-16 14:26:23,192 main TRACE PatternProcessor.getNextTime returning 2016/01/16-14:27:00.000, nextFileTime=2016/01/16-14:26:59.000, prevFileTime=2016/01/16-14:25:59.000, current=2016/01/16-14:26:23.192, freq=EVERY_SECOND
2016-01-16 14:26:23,193 main TRACE DefaultRolloverStrategy.purge() took 0.0 milliseconds
2016-01-16 14:26:23,194 main DEBUG RollingFileManager executing synchronous FileRenameAction[c:\temp\log\app.log to c:\temp\log\app-2016-01-16-14-25-59.log, renameEmptyFiles=false]
2016-01-16 14:26:23,198 main DEBUG RollingFileManager executing async CompositeAction[DeleteAction[basePath=c:\temp\log, options=[], maxDepth=1, conditions=[IfFileName(glob:app-*.log), IfLastModified(age=PT3M)]]]
2016-01-16 14:26:23,199 Log4j2-2 DEBUG Starting DeleteAction[basePath=c:\temp\log, options=[], maxDepth=1, conditions=[IfFileName(glob:app-*.log), IfLastModified(age=PT3M)]]
2016-01-16 14:26:23,200 Log4j2-2 DEBUG DeleteAction complete in 0.001186309 seconds
2016-01-16 14:26:23,201 Log4j2-2 TRACE Sorted paths:
2016-01-16 14:26:23,201 Log4j2-2 TRACE c:\temp\log\app.log (modified: 2016-01-16T05:26:23.199631Z)
2016-01-16 14:26:23,201 Log4j2-2 TRACE c:\temp\log\app-2016-01-16-14-25-59.log (modified: 2016-01-16T05:25:30.832634Z)
2016-01-16 14:26:23,203 Log4j2-2 TRACE c:\temp\log\app-2016-01-16-14-24-59.log (modified: 2016-01-16T05:25:23.188525Z)
2016-01-16 14:26:23,203 Log4j2-2 TRACE c:\temp\log\app-2016-01-16-14-23-59.log (modified: 2016-01-16T05:23:29.466887Z)
2016-01-16 14:26:23,204 Log4j2-2 TRACE IfFileName REJECTED: 'glob:app-*.log' does not match relative path 'app.log'
2016-01-16 14:26:23,204 Log4j2-2 TRACE Not deleting base=c:\temp\log, relative=app.log
2016-01-16 14:26:23,205 Log4j2-2 TRACE IfFileName ACCEPTED: 'glob:app-*.log' matches relative path 'app-2016-01-16-14-25-59.log'
2016-01-16 14:26:23,205 Log4j2-2 TRACE IfLastModified REJECTED: app-2016-01-16-14-25-59.log ageMillis '52373' < 'PT3M'
2016-01-16 14:26:23,205 Log4j2-2 TRACE Not deleting base=c:\temp\log, relative=app-2016-01-16-14-25-59.log
2016-01-16 14:26:23,206 Log4j2-2 TRACE IfFileName ACCEPTED: 'glob:app-*.log' matches relative path 'app-2016-01-16-14-24-59.log'
2016-01-16 14:26:23,206 Log4j2-2 TRACE IfLastModified REJECTED: app-2016-01-16-14-24-59.log ageMillis '60018' < 'PT3M'
2016-01-16 14:26:23,206 Log4j2-2 TRACE Not deleting base=c:\temp\log, relative=app-2016-01-16-14-24-59.log
2016-01-16 14:26:23,206 Log4j2-2 TRACE IfFileName ACCEPTED: 'glob:app-*.log' matches relative path 'app-2016-01-16-14-23-59.log'
2016-01-16 14:26:23,207 Log4j2-2 TRACE IfLastModified REJECTED: app-2016-01-16-14-23-59.log ageMillis '173740' < 'PT3M'
2016-01-16 14:26:23,207 Log4j2-2 TRACE Not deleting base=c:\temp\log, relative=app-2016-01-16-14-23-59.log
log iteration: 4
2016-01-16 14:27:23,200 main TRACE PatternProcessor.getNextTime returning 2016/01/16-14:28:00.000, nextFileTime=2016/01/16-14:27:59.000, prevFileTime=2016/01/16-14:26:59.000, current=2016/01/16-14:27:23.200, freq=EVERY_SECOND
2016-01-16 14:27:23,201 main TRACE DefaultRolloverStrategy.purge() took 0.0 milliseconds
2016-01-16 14:27:23,202 main DEBUG RollingFileManager executing synchronous FileRenameAction[c:\temp\log\app.log to c:\temp\log\app-2016-01-16-14-26-59.log, renameEmptyFiles=false]
2016-01-16 14:27:23,204 main DEBUG RollingFileManager executing async CompositeAction[DeleteAction[basePath=c:\temp\log, options=[], maxDepth=1, conditions=[IfFileName(glob:app-*.log), IfLastModified(age=PT3M)]]]
2016-01-16 14:27:23,205 Log4j2-3 DEBUG Starting DeleteAction[basePath=c:\temp\log, options=[], maxDepth=1, conditions=[IfFileName(glob:app-*.log), IfLastModified(age=PT3M)]]
2016-01-16 14:27:23,207 Log4j2-3 DEBUG DeleteAction complete in 0.001230382 seconds
2016-01-16 14:27:23,207 Log4j2-3 TRACE Sorted paths:
2016-01-16 14:27:23,207 Log4j2-3 TRACE c:\temp\log\app.log (modified: 2016-01-16T05:27:23.20571Z)
2016-01-16 14:27:23,208 Log4j2-3 TRACE c:\temp\log\app-2016-01-16-14-26-59.log (modified: 2016-01-16T05:26:23.946671Z)
2016-01-16 14:27:23,208 Log4j2-3 TRACE c:\temp\log\app-2016-01-16-14-25-59.log (modified: 2016-01-16T05:25:30.832634Z)
2016-01-16 14:27:23,209 Log4j2-3 TRACE c:\temp\log\app-2016-01-16-14-24-59.log (modified: 2016-01-16T05:25:23.188525Z)
2016-01-16 14:27:23,209 Log4j2-3 TRACE c:\temp\log\app-2016-01-16-14-23-59.log (modified: 2016-01-16T05:23:29.466887Z)
2016-01-16 14:27:23,210 Log4j2-3 TRACE IfFileName REJECTED: 'glob:app-*.log' does not match relative path 'app.log'
2016-01-16 14:27:23,210 Log4j2-3 TRACE Not deleting base=c:\temp\log, relative=app.log
2016-01-16 14:27:23,211 Log4j2-3 TRACE IfFileName ACCEPTED: 'glob:app-*.log' matches relative path 'app-2016-01-16-14-26-59.log'
2016-01-16 14:27:23,211 Log4j2-3 TRACE IfLastModified REJECTED: app-2016-01-16-14-26-59.log ageMillis '59265' < 'PT3M'
2016-01-16 14:27:23,211 Log4j2-3 TRACE Not deleting base=c:\temp\log, relative=app-2016-01-16-14-26-59.log
2016-01-16 14:27:23,212 Log4j2-3 TRACE IfFileName ACCEPTED: 'glob:app-*.log' matches relative path 'app-2016-01-16-14-25-59.log'
2016-01-16 14:27:23,212 Log4j2-3 TRACE IfLastModified REJECTED: app-2016-01-16-14-25-59.log ageMillis '112380' < 'PT3M'
2016-01-16 14:27:23,212 Log4j2-3 TRACE Not deleting base=c:\temp\log, relative=app-2016-01-16-14-25-59.log
2016-01-16 14:27:23,213 Log4j2-3 TRACE IfFileName ACCEPTED: 'glob:app-*.log' matches relative path 'app-2016-01-16-14-24-59.log'
2016-01-16 14:27:23,213 Log4j2-3 TRACE IfLastModified REJECTED: app-2016-01-16-14-24-59.log ageMillis '120025' < 'PT3M'
2016-01-16 14:27:23,213 Log4j2-3 TRACE Not deleting base=c:\temp\log, relative=app-2016-01-16-14-24-59.log
2016-01-16 14:27:23,214 Log4j2-3 TRACE IfFileName ACCEPTED: 'glob:app-*.log' matches relative path 'app-2016-01-16-14-23-59.log'
2016-01-16 14:27:23,214 Log4j2-3 TRACE IfLastModified ACCEPTED: app-2016-01-16-14-23-59.log ageMillis '233748' >= 'PT3M'
2016-01-16 14:27:23,214 Log4j2-3 TRACE Deleting c:\temp\log\app-2016-01-16-14-23-59.log

您可以启用状态日志记录并显示您的输出吗?

关于java - Log4j2 - 配置 RolloverStrategy 以删除旧日志文件,我们在Stack Overflow上找到一个类似的问题: https://stackoverflow.com/questions/34741262/

25 4 0
Copyright 2021 - 2024 cfsdn All Rights Reserved 蜀ICP备2022000587号
广告合作:1813099741@qq.com 6ren.com