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Open <ESB_HOME>/repository/conf/log4j.properties file using your favorite text editor to configure log4j to log the API specific logs to a file.

• Add the following block of entries section to the end of the file to configure the logger for log messages where the Log Category is INFO.

  Code Block

  log4j.category.API_LOGGER=INFO, API_APPENDER log4j.additivity.API_LOGGER=false log4j.appender.API_APPENDER=org.apache.log4j.RollingFileAppender log4j.appender.API_APPENDER.File=${carbon.home}/repository/logs/${instance.log}/wso2-esb-api${instance.log}.log log4j.appender.API_APPENDER.MaxFileSize=1000KB log4j.appender.API_APPENDER.MaxBackupIndex=10 log4j.appender.API_APPENDER.layout=org.apache.log4j.PatternLayout log4j.appender.API_APPENDER.layout.ConversionPattern=%d{ISO8601} [%X{ip}-%X{host}] [%t] %5p %c{1} %m%n</pre>

  Tip
  The in-sequence of the REST API will need to contain a Log mediator  with the Log Category defined as INFO to be able to view logs in the log file.

• Add the following block of entries following section to the end of the file to configure the logger for log messages where the Log Category is DEBUG.

  Code Block

  log4j.category.API_LOGGER.TestAPI=DEBUG, TEST_API_APPENDER log4j.additivity.API_LOGGER.TestAPI=false log4j.appender.TEST_API_APPENDER=org.apache.log4j.DailyRollingFileAppender log4j.appender.TEST_API_APPENDER.File=${carbon.home}/repository/logs/${instance.log}/TestAPI.log log4j.appender.TEST_API_APPENDER.datePattern='.'yyyy-MM-dd-HH-mm log4j.appender.TEST_API_APPENDER.layout=org.apache.log4j.PatternLayout log4j.appender.TEST_API_APPENDER.layout.ConversionPattern=%d{ISO8601} [%X{ip}-%X{host}] [%t] %5p %c{1} %m%n

  Info
  The above configuration creates a log file names TestAPI.log in the folder <ESB_HOME>/repository/logs.

  Tip
  The in-sequence of the REST API will need to contain a Log mediator  with the Log Category defined as DEBUG to be able to view logs in the log file.

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