Access Log

If you want to logging the access information for each provide service,you can turn on the accesslog switch,which like the access log of Apache.

Note: The size of the access log maybe too much,please check the disk capacity. Now I will show you how to config the access log.

Logging by logging framework

<dubbo:protocol accesslog="true" .../>

The above configuration will turn on accesslog switch for all provide services,and logging the access log with logging framework(log4j/logback/slf4j...).You can config the logging framework of logger and appender for logging the access log.The simplest way is config logger name with dubbo.accesslog. The Example:

<appender name="accesslogAppender" class="ch.qos.logback.core.rolling.RollingFileAppender">
        <file>${loggingRoot}/accesslog/logging.log</file>
        <encoding>${loggingCharset}</encoding>
        <append>true</append>
        <rollingPolicy class="ch.qos.logback.core.rolling.TimeBasedRollingPolicy">
            <FileNamePattern>${loggingRoot}/accesslog/%d{yyyyMMdd}/logging.log.%d{yyyyMMdd}%i.gz
            </FileNamePattern>
            <MaxHistory>15</MaxHistory>
            <TimeBasedFileNamingAndTriggeringPolicy class="ch.qos.logback.core.rolling.SizeAndTimeBasedFNATP">
                <MaxFileSize>1024MB</MaxFileSize>
            </TimeBasedFileNamingAndTriggeringPolicy>
        </rollingPolicy>
        <layout class="ch.qos.logback.classic.PatternLayout">
            <pattern><![CDATA[%level|%d{yyyy-MM-dd HH:mm:ss}|%m%n}]]></pattern>
        </layout>
</appender>
<logger name="dubbo.accesslog" level="INFO" additivity="false">
        <appender-ref ref="accesslogAppender"/>
</logger>

The above is the demonstration of logback framework.Other logging framework is same too. It will logging the access log of all provide services into single file(accesslog/logging.log). And you can also config the access log of each provide service to logging separately,Only change name attribute of the logger tag,set the name attribute to dubbo.accesslog.serviceInterfaceClassFullName.The Example:

<logger name="dubbo.accesslog.com.dubbo.FooServiceInterface" level="INFO" additivity="false">
        <appender-ref ref="fooServiceAccesslogAppender"/>
</logger>

If you only want logging the access log of specified provide service,but not all services, it's supported too.The Example:

<dubbo:service accesslog="true" .../>

Logging by specified file path

You can specify the file path with the accesslog attribute.The Example:

<dubbo:protocol accesslog="/home/admin/logs/service/accesslog.log" .../>

OR

<dubbo:service accesslog="/home/admin/logs/service/accesslog.log" .../>