logback:两个 appender，多个记录器，不同的级别 [英] logback: Two appenders, multiple loggers, different levels

问题描述

我想在我的应用程序(Spring 集成)中有两个日志文件，debug.log 和 main.log.我想在 INFO 级别运行 main.log，在 DEBUG 级别运行 debug.log.这可以通过 appender 上的过滤器来实现.我想根据源将不同级别记录到附加程序.换句话说

<appender-ref ref="main"/><logger name="org.springframework" level="DEBUG"><appender-ref ref="debug"/><logger name="com.myapp" level="INFO"><appender-ref ref="main"/><logger name="com.myapp" level="DEBUG"><appender-ref ref="debug"/>

总结一下:

1. 弹簧记录器
   • 主要 -> 错误
   • 调试 -> 调试
2. com.myapp 记录器
   • 主要 -> 信息
   • 调试 -> 调试

因此，我必须让记录器在 DEBUG 下运行，而 appender 上的阈值过滤器不够精细.<​​/p>

更新使问题更加清晰

解决方案

创建一个 ThresholdLoggerFilter 类，它可以放在像这样的 appender 上:

<filter class="ch.qos.logback.classic.filter.ThresholdFilter"><level>INFO</level></过滤器><filter class="com.myapp.ThresholdLoggerFilter"><logger>org.springframework</logger><level>错误</level></过滤器></appender>

以下代码有效

package com.myapp;导入 ch.qos.logback.classic.Level;导入 ch.qos.logback.classic.spi.ILoggingEvent;导入 ch.qos.logback.core.filter.Filter;导入 ch.qos.logback.core.spi.FilterReply;公共类 ThresholdLoggerFilter 扩展了 Filter{私人级别；私人字符串记录器；@覆盖公共 FilterReply 决定(ILoggingEvent 事件){如果 (!isStarted()) {返回 FilterReply.NEUTRAL;}if (!event.getLoggerName().startsWith(logger))返回 FilterReply.NEUTRAL;如果 (event.getLevel().isGreaterOrEqual(level)) {返回 FilterReply.NEUTRAL;} 别的 {返回 FilterReply.DENY;}}public void setLevel(Level level) {this.level = 级别；}公共无效 setLogger(字符串记录器){this.logger = 记录器；}公共无效开始(){if (this.level != null && this.logger != null) {超级开始()；}}}

I want to have two log files in my application (Spring Integration), debug.log and main.log. I want to run main.log at an INFO level and debug.log at a DEBUG level. This is doable with filters on the appenders. I want to log different levels to the appenders based on the source. In other words

<logger name="org.springframework" level="ERROR">
    <appender-ref ref="main" />
</logger>
<logger name="org.springframework" level="DEBUG">
    <appender-ref ref="debug" />
</logger>
<logger name="com.myapp" level="INFO">
    <appender-ref ref="main" />
</logger>
<logger name="com.myapp" level="DEBUG">
    <appender-ref ref="debug" />
</logger>

So to summarise:

1. Spring logger
   • main -> ERROR
   • debug -> DEBUG
2. com.myapp logger
   • main -> INFO
   • debug -> DEBUG

Because of this I have to have the loggers running at DEBUG and a threshold filter on an appender isn't fine grained enough.

Update Added clarity to the question

解决方案

Create a ThresholdLoggerFilter class which can be put on an appender like:

<appender name="STDOUT" class="ch.qos.logback.core.ConsoleAppender">
    <filter class="ch.qos.logback.classic.filter.ThresholdFilter">
        <level>INFO</level>
    </filter>
    <filter class="com.myapp.ThresholdLoggerFilter">
        <logger>org.springframework</logger>
        <level>ERROR</level>
    </filter>
    </appender>

The following code works

package com.myapp;

import ch.qos.logback.classic.Level;
import ch.qos.logback.classic.spi.ILoggingEvent;
import ch.qos.logback.core.filter.Filter;
import ch.qos.logback.core.spi.FilterReply;

public class ThresholdLoggerFilter extends Filter<ILoggingEvent> {
    private Level level;
    private String logger;

    @Override
    public FilterReply decide(ILoggingEvent event) {
        if (!isStarted()) {
            return FilterReply.NEUTRAL;
        }

        if (!event.getLoggerName().startsWith(logger))
            return FilterReply.NEUTRAL;

        if (event.getLevel().isGreaterOrEqual(level)) {
            return FilterReply.NEUTRAL;
        } else {
            return FilterReply.DENY;
        }
    }

    public void setLevel(Level level) {
        this.level = level;
    }

    public void setLogger(String logger) {
        this.logger = logger;
    }

    public void start() {
        if (this.level != null && this.logger != null) {
            super.start();
        }
    }
}

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