MDC to the log management configuration

What MDC that?

First contact with the MDC, very Mongolian circle. Take a look at the package import org.slf4j.Logger imported; import org.slf4j.LoggerFactory; import org.slf4j.MDC; it is clearly relevant and log management.

slf4j common interface to log what? trace, debug, info, warn, error, coupled with the MDC.

The most common log management will in this way:

private static final Logger log = LoggerFactory.getLogger(类名.class);

log.info();

log.debug();

log.trace();

How to configure the log management application

       Output log format:
        <Property name = "the PATTERN">
            % {X-LogID}, [% - 5level],% D {the MM-dd-YYYY HH: mm: ss.SSS},% T, C {%}. 1 :%% n-MSG
        </ Property>
       Analysis:

1.        % X {logId} ---- for MDC.put ( "", "") method.
2.        Level [% -5level] ---- logs
3.        % D {yyyy-MM-dd HH: mm: ss.SSS} ----- Time Format
4.        % T ----- thread
5.        % C {1} --- class name
6.        % Msg --- news
7.        % N ------ newline

See profile

 <? Xml Version = "1.0" encoding = "UTF-8" ?> 
<-! Status = "OFF", can be removed, whether it means to record information log4j2 event itself, the default is OFF ->     
< the Configuration > 
    < Properties > 
        <-! file output format -> 
        < Property name = "the PATTERN" >
            %X{logId},[%-5level],%d{yyyy-MM-dd HH:mm:ss.SSS},%t,%c{1}: %msg%n
        </property>

        <! - log root path -> 
        < Property name = "BASE_PATH" >
            /applog/xxxlog
        </property>

        <! - Application name -> 
        < Property name = "APP_NAME" >
            xxx-core
        </property>

        <! - log file name -> 
        < Property name = "LOG_FILE_NAME" >
            ${BASE_PATH}/${APP_NAME}.log
        </property>

        <! - rolling log file generation rules -> 
        < Property name = "LOG_FILE_PATTERN" >
            ${BASE_PATH}/${APP_NAME}_%d{yyyyMMddHHmm}-%i.log
        </property>
    </properties>

    <!-- xx报文日志级别 -->
    <DynamicThresholdFilter key="traceOpen" defaultThreshold="ERROR" onMatch="ACCEPT"
        onMismatch="NEUTRAL">
        <KeyValuePair key="yes" value="trace" />
    </DynamicThresholdFilter>
       
           <! - log output defined -> 
    < the appenders in > 
        <! - the rolling Log -> 
        < RollingFile name = "rollingFileLog" filename = "$ {} LOG_FILE_NAME" filePattern = "$ {} LOG_FILE_PATTERN" 
            the append = "to true" > 
            < Filters >
                Filter out the log does not meet the level of the log
                <!-- <ThresholdFilter level="error" onMatch="DENY" onMismatch="NEUTRAL" /> -->
                 Only output level and higher-level information (onMatch), other direct denial (onMismatch)
                <!-- <ThresholdFilter level="trace" onMatch="ACCEPT" onMismatch="DENY" /> -->
            </Filters>
            Log output format
            <PatternLayout pattern="${PATTERN}" />
            <Policies>
                <TimeBasedTriggeringPolicy />
                <SizeBasedTriggeringPolicy size="20 MB" />
            </Policies>
            Log rolling strategy
            < DefaultRolloverStrategy max = "50" > 
                < the Delete the basePath = "$ {BASE_PATH} /" maxDepth = "2" > 
                    < IfFileName glob =. "$ {_} * Log APP_NAME"  /> 
                    <-! ! Here must Age filePattern and coordination, which is accurate to HH, there have to be written xH, xd would be ineffective
                    In addition, the best digital> 2, otherwise it may result in deletion of time, the most recent file is still in an occupied state, leading to delete unsuccessful! -> 
                    <! - 7 days -> 
                    < IfLastModified Age = "7D"  /> 
                    < IfAny > 
                        < IfAccumulatedFileSize Exceeds = "GB 2"  /> 
                        < IfAccumulatedFileCount Exceeds = "100"  /> 
                    </ IfAny > 
                </ the Delete > 
            </ DefaultRolloverStrategy > 
        </ RollingFile > 
                <-! console -> 
        <Console name="console" target="SYSTEM_OUT">
            <PatternLayout pattern="${PATTERN}" />
        </Console>
    </appenders>
    
     <!-- 日志对象定义 -->
    <loggers>
        <!-- xx日志 -->
        <logger name="CoreframeInteractiveLogger" level="info" additivity="true">
            <AppenderRef ref="interactiveAppender" />
        </logger>

        <!-- xx日志 -->
        <logger name="CoreframeServiceMetricsLogger" level="info" additivity="true">
            <AppenderRef ref="serviceMetricsAppender" />
        </logger>

        <-! Services Framework -> 
        < Logger name = "CoreFrame" Level = "info"  />

        <! - Application logs -> 
        < Logger name = "-Service" Level = "Debug"  /> 
        < Logger name = "" Level = "Debug"  />

        <!-- 测试日志 -->
        <logger name="test" level="trace" />
        <logger name="" level="trace" />

        <root level="info">
            <AppenderRef ref="console" />
            <AppenderRef ref="rollingFileLog" />
        </root>
    </loggers>

</configuration>