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我目前正在试用 netflix 的 Blitz4j。一切似乎都运行良好，但由于某种原因，我在日志文件中看到 log4j 不断尝试配置属性（每分钟）。

以下是我对 log4j 的配置：

# logging properties
## root logger options
log4j.rootCategory=OFF
log4j.rootLogger=INFO, stdout, LOGTXT
## stdout, logs show on console
log4j.appender.stdout=org.apache.log4j.ConsoleAppender
log4j.appender.stdout.Target=System.out
log4j.appender.stdout.layout=com.netflix.logging.log4jAdapter.NFPatternLayout
log4j.appender.stdout.layout.ConversionPattern=%d{yyyy-MM-dd hh:mm:ss} %5p [ %c ] %m%n
## LOGTXT, logs to a file
log4j.appender.LOGTXT=org.apache.log4j.DailyRollingFileAppender
log4j.appender.LOGTXT.File=./log/log.txt
log4j.appender.LOGTXT.Append=true
log4j.appender.LOGTXT.Threshold=DEBUG
log4j.appender.LOGTXT.DatePattern='-' yyyy-MM-dd
log4j.appender.LOGTXT.layout=com.netflix.logging.log4jAdapter.NFPatternLayout
log4j.appender.LOGTXT.layout.ConversionPattern=%d{yyyy-MM-dd hh:mm:ss} %5p [ %c ] %m%n
log4j.logger.com.otcmarkets.mfa.common.util.logging.MfaLogFactory=INFO, stdout, LOGTXT

在控制台/标准输出中，每分钟我都会看到：

2013-04-12 06:36:36  INFO [ com.netflix.blitz4j.LoggingConfiguration ] Configuring log4j dynamically
2013-04-12 06:36:36  INFO [ com.netflix.blitz4j.LoggingConfiguration ] Updated properties is :{log4j.logger.com.otcmarkets.mfa.common.util.logging.MfaLogFactory=INFO, stdout, LOGTXT}
2013-04-12 06:36:36  INFO [ com.netflix.blitz4j.LoggingConfiguration ] The root category for log4j.rootCategory now is OFF
2013-04-12 06:36:36  INFO [ com.netflix.blitz4j.LoggingConfiguration ] The root category for log4j.rootLogger now is INFO, stdout, LOGTXT
2013-04-12 06:36:36  INFO [ com.netflix.blitz4j.LoggingConfiguration ] Configuring log4j with properties :{log4j.appender.stdout=org.apache.log4j.ConsoleAppender, log4j.appender.LOGTXT.Append=true, log4j.rootLogger=INFO, stdout, LOGTXT, log4j.appender.LOGTXT.File=./log/log.txt, log4j.appender.LOGTXT=org.apache.log4j.DailyRollingFileAppender, log4j.appender.LOGTXT.layout.ConversionPattern=%d{yyyy-MM-dd hh:mm:ss} %5p [ %c ] %m%n, log4j.appender.LOGTXT.layout=com.netflix.logging.log4jAdapter.NFPatternLayout, log4j.appender.LOGTXT.Threshold=DEBUG, log4j.loggerFactory=com.netflix.blitz4j.NFCategoryFactory, log4j.logger.com.otcmarkets.mfa.common.util.logging.MfaLogFactory=INFO, stdout, LOGTXT, log4j.appender.stdout.layout.ConversionPattern=%d{yyyy-MM-dd hh:mm:ss} %5p [ %c ] %m%n, log4j.appender.LOGTXT.DatePattern='.' yyyy-MM-dd, log4j.appender.stdout.layout=com.netflix.logging.log4jAdapter.NFPatternLayout, log4j.appender.stdout.Target=System.out, log4j.rootCategory=OFF}
log4j: Parsing for [root] with value=[INFO, stdout, LOGTXT].
log4j: Level token is [INFO].
log4j: Category root set to INFO
log4j: Parsing appender named "stdout".
log4j: Parsing layout options for "stdout".
log4j: Setting property [conversionPattern] to [%d{yyyy-MM-dd hh:mm:ss} %5p [ %c ] %m%n].
log4j: End of parsing for "stdout".
log4j: Setting property [target] to [System.out].
log4j: Parsed "stdout" options.
log4j: Parsing appender named "LOGTXT".
log4j: Parsing layout options for "LOGTXT".
log4j: Setting property [conversionPattern] to [%d{yyyy-MM-dd hh:mm:ss} %5p [ %c ] %m%n].
log4j: End of parsing for "LOGTXT".
log4j: Setting property [append] to [true].
log4j: Setting property [file] to [./log/log.txt].
log4j: Setting property [threshold] to [DEBUG].
log4j: Setting property [datePattern] to ['.' yyyy-MM-dd].
log4j: setFile called: ./log/log.txt, true
log4j: setFile ended
log4j: Appender [LOGTXT] to be rolled at midnight.
log4j: Parsed "LOGTXT" options.
log4j: Setting category factory to [com.netflix.blitz4j.NFCategoryFactory].
log4j: Parsing for [com.otcmarkets.mfa.common.util.logging.MfaLogFactory] with value=[INFO, stdout, LOGTXT].
log4j: Level token is [INFO].
log4j: Category com.otcmarkets.mfa.common.util.logging.MfaLogFactory set to INFO
log4j: Parsing appender named "stdout".
log4j: Appender "stdout" was already parsed.
log4j: Parsing appender named "LOGTXT".
log4j: Appender "LOGTXT" was already parsed.
log4j: Handling log4j.additivity.com.otcmarkets.mfa.common.util.logging.MfaLogFactory=[null]
log4j: Finished configuring.

在 log.txt 文件中，每分钟我都会看到：

2013-04-12 06:38:36  INFO [ com.netflix.blitz4j.LoggingConfiguration ] Configuring log4j dynamically
2013-04-12 06:38:36  INFO [ com.netflix.blitz4j.LoggingConfiguration ] Updated properties is :{log4j.logger.com.otcmarkets.mfa.common.util.logging.MfaLogFactory=INFO, stdout, LOGTXT}
2013-04-12 06:38:36  INFO [ com.netflix.blitz4j.LoggingConfiguration ] The root category for log4j.rootCategory now is OFF
2013-04-12 06:38:36  INFO [ com.netflix.blitz4j.LoggingConfiguration ] The root category for log4j.rootLogger now is INFO, stdout, LOGTXT
2013-04-12 06:38:36  INFO [ com.netflix.blitz4j.LoggingConfiguration ] Configuring log4j with properties :{log4j.appender.stdout=org.apache.log4j.ConsoleAppender, log4j.appender.LOGTXT.Append=true, log4j.rootLogger=INFO, stdout, LOGTXT, log4j.appender.LOGTXT.File=./log/log.txt, log4j.appender.LOGTXT=org.apache.log4j.DailyRollingFileAppender, log4j.appender.LOGTXT.layout.ConversionPattern=%d{yyyy-MM-dd hh:mm:ss} %5p [ %c ] %m%n, log4j.appender.LOGTXT.layout=com.netflix.logging.log4jAdapter.NFPatternLayout, log4j.appender.LOGTXT.Threshold=DEBUG, log4j.loggerFactory=com.netflix.blitz4j.NFCategoryFactory, log4j.logger.com.otcmarkets.mfa.common.util.logging.MfaLogFactory=INFO, stdout, LOGTXT, log4j.appender.stdout.layout.ConversionPattern=%d{yyyy-MM-dd hh:mm:ss} %5p [ %c ] %m%n, log4j.appender.LOGTXT.DatePattern='.' yyyy-MM-dd, log4j.appender.stdout.layout=com.netflix.logging.log4jAdapter.NFPatternLayout, log4j.appender.stdout.Target=System.out, log4j.rootCategory=OFF}
2013-04-12 06:38:36  INFO [ com.netflix.blitz4j.LoggingConfiguration ] Configuring log4j dynamically
2013-04-12 06:38:36  INFO [ com.netflix.blitz4j.LoggingConfiguration ] Updated properties is :{log4j.logger.com.otcmarkets.mfa.common.util.logging.MfaLogFactory=INFO, stdout, LOGTXT}
2013-04-12 06:38:36  INFO [ com.netflix.blitz4j.LoggingConfiguration ] The root category for log4j.rootCategory now is OFF
2013-04-12 06:38:36  INFO [ com.netflix.blitz4j.LoggingConfiguration ] The root category for log4j.rootLogger now is INFO, stdout, LOGTXT
2013-04-12 06:38:36  INFO [ com.netflix.blitz4j.LoggingConfiguration ] Configuring log4j with properties :{log4j.appender.stdout=org.apache.log4j.ConsoleAppender, log4j.appender.LOGTXT.Append=true, log4j.rootLogger=INFO, stdout, LOGTXT, log4j.appender.LOGTXT.File=./log/log.txt, log4j.appender.LOGTXT=org.apache.log4j.DailyRollingFileAppender, log4j.appender.LOGTXT.layout.ConversionPattern=%d{yyyy-MM-dd hh:mm:ss} %5p [ %c ] %m%n, log4j.appender.LOGTXT.layout=com.netflix.logging.log4jAdapter.NFPatternLayout, log4j.appender.LOGTXT.Threshold=DEBUG, log4j.loggerFactory=com.netflix.blitz4j.NFCategoryFactory, log4j.logger.com.otcmarkets.mfa.common.util.logging.MfaLogFactory=INFO, stdout, LOGTXT, log4j.appender.stdout.layout.ConversionPattern=%d{yyyy-MM-dd hh:mm:ss} %5p [ %c ] %m%n, log4j.appender.LOGTXT.DatePattern='.' yyyy-MM-dd, log4j.appender.stdout.layout=com.netflix.logging.log4jAdapter.NFPatternLayout, log4j.appender.stdout.Target=System.out, log4j.rootCategory=OFF}

不知何故，它在文件中记录了两次配置内容。

这是我的“日志工厂”：

public class MyLogFactory {
    // init the logging configuration instance
    private final static LoggingConfiguration logConfig = LoggingConfiguration.getInstance();

    static {
        /*  set up the properties for logging
            we will use two forms of logging
                1. stdout
                2. log file, rollover is every midnight
        */
        Properties props = new Properties();
        System.out.println("configuring properties for log4j");
        // root logger options
        props.setProperty("log4j.rootCategory", "OFF");
        props.setProperty("log4j.rootLogger", "INFO, stdout, LOGTXT");
        // direct log messages to stdout
        props.setProperty("log4j.appender.stdout", "org.apache.log4j.ConsoleAppender");
        props.setProperty("log4j.appender.stdout.Target", "System.out");
        props.setProperty("log4j.appender.stdout.layout", "com.netflix.logging.log4jAdapter.NFPatternLayout");
        props.setProperty("log4j.appender.stdout.layout.ConversionPattern", "%d{yyyy-MM-dd hh:mm:ss} %5p [ %c ] %m%n");
        // direct log messages to log file
        props.setProperty("log4j.appender.LOGTXT", "org.apache.log4j.DailyRollingFileAppender");
        props.setProperty("log4j.appender.LOGTXT.File", "./log/log.txt");
        props.setProperty("log4j.appender.LOGTXT.Append", "true");
        props.setProperty("log4j.appender.LOGTXT.Threshold", "DEBUG");
        props.setProperty("log4j.appender.LOGTXT.DatePattern", "'.' yyyy-MM-dd");
        props.setProperty("log4j.appender.LOGTXT.layout", "com.netflix.logging.log4jAdapter.NFPatternLayout");
        props.setProperty("log4j.appender.LOGTXT.layout.ConversionPattern", "%d{yyyy-MM-dd hh:mm:ss} %5p [ %c ] %m%n");
        props.setProperty("log4j.logger.com.otcmarkets.mfa.common.util.logging.MfaLogFactory", "INFO,stdout,LOGTXT");

        logConfig.configure(props);
        System.out.println("finished configuring properties for log4j");
    }

    public static Logger getLogger(Class clazz)
    {
        return LoggerFactory.getLogger(clazz);
    }
}
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1 回答 1

0

这是由于 Archaius 的默认行为（blitz4j 在后台使用的）。基本上，存在一个问题，即 Archaius 每次轮询（默认情况下每分钟）时检测定义记录器的属性已更改，而不管该属性是否实际已更改。

因此，在您的情况下，Archaius 每分钟都在检测 log4j.logger.com.otcmarkets.mfa.common.util.logging.MfaLogFactory 属性已更改，然后通过 blitz4j 触发 log4j 的重新配置。

有关更多信息，请参阅 Archaius 的 github 上的以下问题：Github 问题

于 2013-12-10T21:44:11.157 回答