Parsing Apache Log files

Wednesday, November 01 2006

This is a useful Regex that Craig wrote today, it pulls out various info from an apache log file.

private static Regex __Regex = null;

internal static Regex _Regex

{

get

{

if (__Regex == null)

{

__Regex = new Regex(@"(?<remoteHost>[^\ ]+?)\ (?<remoteIdent>[^\ ]+?)\ (?<remoteUs"

+ @"er>[^\ ]+?)\ \[(?<requestTime>[^\]]+?)\]\ \""(?<request>(?<r"

+ @"equestMethod>[^\ ]+?)?\ ?(?<requestPath>[^\ ]+?)?\ ?(?<reque"

+ @"stProtocol>[^\ ]+?)?)\""\ (?<statusCode>[^\ ]+?)\ (?<sizeByt"

+ @"es>[^\ ]+?)\ \""(?<referer>[^\""]*?)\""\ \""(?<userAgent>[^\""]"

+ @"+?)\""\r?\n?",

RegexOptions.Compiled & RegexOptions.IgnoreCase & RegexOptions.IgnorePatternWhitespace & RegexOptions.CultureInvariant);

}

return __Regex;

}

Update: Craig's finally started writing about it, you can read the article here: Apache Log Fun

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