Can substitution in replace regexpression take the MDC context key name?

[Yogi Nerella <yn...@gmail.com>]

Hi,

I want to replace some constant strings with the MDC.context() values?

Does regularexpress replace support this?

Ex:
%replace{%msg}{myappname}{%X{appname}}

Thanks
Yogi

Re: Can substitution in replace regexpression take the MDC context key name?

[Yogi Nerella <yn...@gmail.com>]

Ralph,


My intention is basically to replace all "\n" in the message with the
ThreadContext for our application.


I think RegexReplacement is not taking variables for pattern and
substitution.

I am using the following in pattern-layout, but the substitution is not
happening correctly, and also by looking at the code, it looks like code do
not support.

            <PatternLayout>
                <pattern>%-5p | %X | %d{MM-dd-yyyy HH:mm} |%10sn |
%replace{%msg}{\n}{%%X{host}}%n</pattern>


RegexReplacement  class do not have any information about the context, so
it cannot resolve %X{host} for substitution string.


 public String format(final String msg) {
        return pattern.matcher(msg).replaceAll(substitution);
    }

this could be as follows

public String format(final String msg, String paramSubstitution)
{
       // substitution should be formatted with the formatter, and then
passed to this method.
        return pattern.matcher(msg).replaceAll(paramSubstitution);
}

Yogi


On Fri, Feb 15, 2013 at 4:04 PM, Ralph Goers <ra...@dslextreme.com>wrote:

> Where are you wanting to do this?  In a pattern in the pattern layout you
> just use %X{app name} as you show below.  In many places you can use
> ${mdc:name}.
>
> Ralph
>
>
> On Feb 15, 2013, at 12:02 PM, Yogi Nerella wrote:
>
> > Hi,
> >
> > I want to replace some constant strings with the MDC.context() values?
> >
> > Does regularexpress replace support this?
> >
> > Ex:
> > %replace{%msg}{myappname}{%X{appname}}
> >
> > Thanks
> > Yogi
>
>
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>

Re: Can substitution in replace regexpression take the MDC context key name?

[Ralph Goers <ra...@dslextreme.com>]

Where are you wanting to do this?  In a pattern in the pattern layout you just use %X{app name} as you show below.  In many places you can use ${mdc:name}.

Ralph


On Feb 15, 2013, at 12:02 PM, Yogi Nerella wrote:

> Hi,
> 
> I want to replace some constant strings with the MDC.context() values?
> 
> Does regularexpress replace support this?
> 
> Ex:
> %replace{%msg}{myappname}{%X{appname}}
> 
> Thanks
> Yogi


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