[Log4c-devel] configuration file logging failure and log file reading

[Reshmi K. <res...@ne...>]

Hi all,

 

I am trying to use log4c for my application logging. For implementing
rolling policy, I used log4c rolling file APIs. I understood from Log4C
developers guide that the rolling policy could be achieved by editing
the configuration file (log4crc). I tried editing the appender name to a
log file path in the configuration file. But the application run without
logging. 

 Can anyone please tell me  how to implement rolling log mechanism using
log4c
<http://stackoverflow.com/questions/614193/how-to-use-rolling-log-using-
log4c> ? 

 

Attached the  helloworld application sample and the configuration file
below: 

 

Hello world code snippet as follows:

 

#include <stdio.h>

 

#include "log4c.h"

 

int main(int argc, char** argv){

  int rc = 0;

  log4c_category_t* mycat = NULL;

  

  if (log4c_init()){

    printf("log4c_init() failed");

    rc = 1;  

  }else{

      mycat = log4c_category_get("log4c.examples.helloworld"); 

 

      log4c_category_log(mycat, LOG4C_PRIORITY_ERROR, "Hello World!");

    

    /* Explicitly call the log4c cleanup routine */

    if ( log4c_fini()){

      printf("log4c_fini() failed");

    }

  }

  return 0;

}

 

 

 

The configuration file looks as follows:

<?xml version="1.0" encoding="ISO-8859-1"?>

<!DOCTYPE log4c SYSTEM "">

 

<log4c version="1.2.3">

 

        <config>

               <bufsize>0</bufsize>

               <debug level="2"/>

               <nocleanup>0</nocleanup>

               <reread>1</reread>

        </config>

 

        <category name="root" priority="notice"/>

        <category name="six13log.log" priority="error" appender="stdout"
/>

 

        <rollingpolicy name="myrollingpolicy" type="sizewin"
maxsize="1024" maxnum="10" />

 

        <appender name="myrollingfileappender" type="rollingfile"
logdir="." prefix="myprefix" layout="dated"
rollingpolicy="myrollingpolicy" />

        

        <appender name="stdout" type="stream" layout="basic"/>

        <appender name="stderr" type="stream" layout="dated"/>

        <appender name="syslog" type="syslog" layout="basic"/>

        

 

        <appender name="s13file" type="s13_file" layout="basic"/>

        <appender name="plain_stderr" type="s13_stderr" layout="none"/>

        <appender name="cat_stderr" type="s13_stderr"
layout="catlayout"/>

        <appender name="xml_stderr" type="s13_stderr"
layout="xmllayout"/>

        <appender name="user_stderr" type="s13_stderr"
layout="userlayout"/>

 

        <layout name="basic" type="basic"/>

        <layout name="dated" type="dated"/>

        

        <layout name="catlayout" type="s13_cat"/>

        <layout name="xmllayout" type="s13_xml"/>

        <layout name="none" type="s13_none"/>

        <layout name="userlayout" type="s13_userloc"/>

        

        <category name="six13log.log.app.application2" priority="debug"
appender="cat_stderr" />

        <category name="six13log.log.app.application3" priority="debug"
appender="user_stderr" />

        <category name="six13log.log.app" priority="debug"
appender="myrollingfileappender" />

 

        <category name="log4c.examples.helloworld" priority="debug"
appender="stdout"/>

        <category name="log4c.examples.helloworld" priority="debug"
appender="/home .. /..filename.txt"/>

 

        

     

 

</log4c>

 

I edited the last two lines in the configuration file for logging.

Please let me know how the logging has done through the log4crc
configuration file??

 

Also I want to know how the log file reading  could be performed using
log4c APIs?I tried with simple file operations to read the logs from a
log file. But it fails. 

 

Thanks in advance 

 

 

Regards,

Reshmi