以编程方式创建Logback Logger

Question

我有一个关于logback项目的问题。我的要求是我必须动态地创建日志属性。我来举个例子来解释一下。

我的项目创建与外部系统的套接字通信，它可能有多个套接字。对于每个套接字，我想拥有不同的日志文件，其中将包含读取和发送的消息。为了做到这一点，我以编程方式为套接字创建了记录器。问题是当我想根据logback.xml重新配置记录器时（通过添加scan =“true”或重新初始化logback），我创建的记录器变得不可用。我该如何解决这个问题，或者你能否给我提供另一种解决方案？

这是我的配置文件（logback.xml）

<?xml version="1.0" ?> 
<configuration> 
    <property name="HOME_PATH" value="/data/logs/myapp/" scope="CONTEXT" /> 
    <property name="MYAPP_LOG_FILE" value="myapp.log" /> 
    <property name="MYAPP_ROLLING_TEMPLATE" value="%d{yy-MM-dd}" scope="CONTEXT" /> 
    <property name="MYAPP_OLD_LOG_FILE" value="${MYAPP_LOG_FILE}.%d{yy-MM-dd}" /> 
    <property name="DEFAULT_PATTERN" value="%d{yyyy-MM-dd HH:mm:ss.SSS} [%file:%line] [%level] %msg%n" scope="CONTEXT" /> 

    <appender name="myAppender" class="ch.qos.logback.core.rolling.RollingFileAppender"> 
     <file>${HOME_PATH}${MYAPP_LOG_FILE}</file> 
     <rollingPolicy class="ch.qos.logback.core.rolling.TimeBasedRollingPolicy"> 
      <fileNamePattern>${HOME_PATH}${MYAPP_LOG_FILE}.${MYAPP_ROLLING_TEMPLATE}</fileNamePattern> 
     </rollingPolicy> 

     <encoder class="ch.qos.logback.classic.encoder.PatternLayoutEncoder"> 
      <pattern>${DEFAULT_PATTERN}</pattern> 
     </encoder> 
    </appender> 

    <logger name="com.myapp" level="DEBUG" additivity="false"> 
     <appender-ref ref="myAppender" /> 
    </logger> 

    <root level="OFF"> 
    </root> 
</configuration> 

，在这里你可以看到我是如何编程方式创建记录器（同样，我只对插座日志做到这一点）。

public static Logger createLogger(String name) { 
     ch.qos.logback.classic.Logger templateLogger = (ch.qos.logback.classic.Logger) LogUtil.getLogger("com.myapp"); 
     LoggerContext context = templateLogger.getLoggerContext(); 

     String logDir = context.getProperty("HOME_PATH"); 

     PatternLayoutEncoder encoder = new PatternLayoutEncoder(); 
     encoder.setPattern(context.getProperty("DEFAULT_PATTERN")); 
     encoder.setContext(context); 

     DefaultTimeBasedFileNamingAndTriggeringPolicy<ILoggingEvent> timeBasedTriggeringPolicy = new DefaultTimeBasedFileNamingAndTriggeringPolicy<ILoggingEvent>(); 
     timeBasedTriggeringPolicy.setContext(context); 

     TimeBasedRollingPolicy<ILoggingEvent> timeBasedRollingPolicy = new TimeBasedRollingPolicy<ILoggingEvent>(); 
     timeBasedRollingPolicy.setContext(context); 
     timeBasedRollingPolicy.setFileNamePattern(logDir + name + ".log." + context.getProperty("MYAPP_ROLLING_TEMPLATE")); 
     timeBasedRollingPolicy.setTimeBasedFileNamingAndTriggeringPolicy(timeBasedTriggeringPolicy); 
     timeBasedTriggeringPolicy.setTimeBasedRollingPolicy(timeBasedRollingPolicy); 

     RollingFileAppender<ILoggingEvent> rollingFileAppender = new RollingFileAppender<ILoggingEvent>(); 
     rollingFileAppender.setAppend(true); 
     rollingFileAppender.setContext(context); 
     rollingFileAppender.setEncoder(encoder); 
     rollingFileAppender.setFile(logDir + name + ".log"); 
     rollingFileAppender.setName(name + "Appender"); 
     rollingFileAppender.setPrudent(false); 
     rollingFileAppender.setRollingPolicy(timeBasedRollingPolicy); 
     rollingFileAppender.setTriggeringPolicy(timeBasedTriggeringPolicy); 

     timeBasedRollingPolicy.setParent(rollingFileAppender); 

     encoder.start(); 
     timeBasedRollingPolicy.start(); 

     rollingFileAppender.stop(); 
     rollingFileAppender.start(); 

     ch.qos.logback.classic.Logger logbackLogger = (ch.qos.logback.classic.Logger) LogUtil.getLogger(name); 
     logbackLogger.setLevel(templateLogger.getLevel()); 
     logbackLogger.setAdditive(false); 
     logbackLogger.addAppender(rollingFileAppender); 

     return logbackLogger; 
} 

这就是我如何重新初始化的logback

private static void initializeLogback() { 
    File logbackFile = new File(logFilePath); 
    System.setProperty("logback.configurationFile", logbackFile.getAbsolutePath()); 
    StaticLoggerBinder loggerBinder = StaticLoggerBinder.getSingleton(); 
    LoggerContext loggerContext = (LoggerContext) loggerBinder.getLoggerFactory(); 

    loggerContext.reset(); 
    JoranConfigurator configurator = new JoranConfigurator(); 
    configurator.setContext(loggerContext); 
    try { 
     configurator.doConfigure(logbackFile); 
    } catch(JoranException e) { 
     throw new ColumbusRuntimeException(e.getMessage(), e); 
    } 
} 

Answer 1

看起来你需要的SiftingAppender您的鉴别将是插座ID本身，或任何组合偏差。我不知道你会遇到什么线程问题（当读取MDC时等），但这应该是一个很好的起点，并且看起来与你的情况类似。