Problem with WriterAppender

 

Hi,

                I am facing a problem with the WriterAppender. I am developing a custom appender class derived from WriterAppender class.  I have initialized the custom appender class as follows:

 

                log4cxx::LayoutPtr layout(new log4cxx::PatternLayout(""));

       istringstream in_bis(ios_base:: in | ios_base::out |

                          ios_base::app );

       std::ostream *os = new std::ostream(in_bis.rdbuf());

       CCustomLogClass *my = new CCustomLogClass (layout,os);

 

CCustomLogClass has been derived from WriterAppender. Then I added this custom appender class to the root logger and called debug, info, error function with some log strings on root logger. I have set the immediateFlush variable of the custom appender class as FALSE.

 

To extract the logging information in my custom appender class I have written the following code:

 

       std::string str(10u,' ');

       std::stringbuf *pStream = new std::stringbuf;

       os->rdbuf(pStream);

       pStream->str(str);

 

I tried to get the logging string from str.c_str() function. But this function was always returning NULL. Can anybody tell what else need to be done to extract logging string or I am doing something wrong here.

 

 

 

Regards

Prosenjit Sinha

Project Engineer 

Plot No:2,MIDC,

Pune Infotech Park,

Hinjewadi,Pune-411057,India

Tel: 09325502750 

"Simplicity is the ultimate sophistication."

 

 

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