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https://issues.apache.org/jira/browse/LOG4J2-695?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14052001#comment-14052001
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Remko Popma commented on LOG4J2-695:
------------------------------------

Your results seem to indicate that "raw" logging (without formatting), log4j2 
is faster than log4j on both Linux and windows. It seems clear that the 
performance problem is in the formatting logic. (So I don't understand  why 
you're blaming AsyncLogger.)

Anyway, don't you think the difference between the formatting performance on 
Linux and Windows is interesting? Try commenting out all "create UUID" code and 
see how that impacts the results. 

> Custom Logger with restrictions on existing methods
> ---------------------------------------------------
>
>                 Key: LOG4J2-695
>                 URL: https://issues.apache.org/jira/browse/LOG4J2-695
>             Project: Log4j 2
>          Issue Type: Bug
>          Components: API
>            Reporter: SIBISH BASHEER
>              Labels: customlogger
>         Attachments: AppAsyncMain.java, CustomLogger.java, CustomLogger.java, 
> complete project.zip, final code V2 7 2 2014.zip, final code custom 
> logger.zip, performance log4j vs log4j2.zip, performance log4j vs log4j2.zip, 
> performance log4jvslog4j2 singleclass.zip, to Ralph performance code.zip
>
>
> I have been looking at the Custom/Extended logger discussions. But none of 
> them seems to fulfil what i am looking for.
> 1) I want custom methods as below:
> {code}
>     private static CustomLogger logger = 
> CustomLogger.getLogger(AppAsyncMain.class);
>    
>     logger.info( transaction_id, app_name + event_name +
>                                       "inside the loop" + "inside the loop of 
> the sample app" +
>                                       "success" + "looped in" + "loop_count" +
>                                       String.valueOf(i));
> {code}
>                                       
>       log:
> {code}
> 2014-06-30 16:09:28,268 log_level="INFO" thread_name="main" 
> class_name="com.custom.samplelog4j.AppAsyncMain" 
> transaction_id="79ea1071-9565-405a-aa18-75d271694bf2" 
> event_id="dd5c69c0-4400-41fd-8a2e-5d538d8e8c9b" app="Sample Logging SDK App" 
> event_name="Sample Event" action="start of sample app" desc="start of api" 
> result="success" reason="start" token="abcdefg" alias="a...@gmail.com" 
> {code}
>       
> 2) I want to show warning in existing logger methods so the teams using the 
> custom logger doesn't use these methods other than for testing:
> {code}
>    logger.info("start of statement");
> {code}
>    
>    log:
> {code}
>    2014-06-30 16:12:31,065 log_level="INFO" thread_name="main" 
> class_name="com.custom.samplelog4j2.AppAsyncMain" start of statement  
> customlogger_warning="method not recommended for production use" 
> {code}
>    
> 3) Custom validations for the fields:
> {code}
>       private static String validateFields(String app_name, String event_name,
>                       String action, String desc, Result result, String 
> reason) {
>               String validateStatus = "";
>               if (!ValidateAppName(app_name)) {
>                       validateStatus = "app_name";
>               } else if (!ValidateEventName(event_name)) {
>                       validateStatus = "event_name";
>               } else if (!ValidateAction(action)) {
>                       validateStatus = "action";
>               } else if (!ValidateDesc(desc)) {
>                       validateStatus = "desc";
>               } else if (!ValidateReason(result, reason)) {
>                       validateStatus = "reason";
>               }
>               return validateStatus;
>       }
> {code}
> Options tried:
> 1.
> * extended ExtendedLoggerWrapper
> * created the map of the Custom logger
> * This option was failing because of "writing to a closed appender"
> * Attached is the code "CustomLogger.java"
>    
> 2. Modified the AbstractLogger in Trunk and added the below methods:
> {code}
>       @Override
>     public void info(final String message) {
>     String updtMessage = message + " amexlogger_error=\"Incorrect method 
> used\"";
>         logIfEnabled(FQCN, Level.INFO, null, updtMessage, (Throwable) null);
>     }
>  public void info(final String transactionId, final String app_name, final 
> String event_name, final String action, final String desc, final String 
> result, final String reason, final String... moreFields) { 
>        String message = "transaction_id=" + transactionId + " " + "app_name=" 
> + app_name + " " + "event_name=" + event_name + " " + "action=" + action;
>  
>         logIfEnabled(FQCN, Level.INFO, null, message, (Throwable) null);
>     }
> {code}
>       I don't want to modify the methods inside the log4j-api. 
>       
> Please help me with the correct approach on how to use log4j2 for this 
> usecase.
> Thanks
> Sibish



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