Thanks Ron, that looks like it will allow me to populate the Properties
collection of the LoggingEvent instance.
Then, considering that the actual properties logged will differ per event I
guess I would combine this with my custom Layout class.
I think that gives me what I need.
Thanks again.
Ron Grabowski wrote:
>
> public class LogManager
> {
> public static GetLogger<T>()
> {
> return new LogEx(LogManager.GetLogger(typeof(T)));
> }
> }
>
> // untested...I think I'm forgetting a constructor
> public class LogEx : LogImpl
> {
> private readonly static Type declaringType = typeof(LogEx);
>
> public void Info(string message, IDictionary properties)
> {
> if (IsInfoEnabled)
> {
> LoggingEvent loggingEvent = new LoggingEvent(
> declaringType,
> Logger.Repository,
> Logger.Name,
> Level.Info,
> message,
> t);
> foreach (var entry in properites)
> {
> loggingEvent.Properties[entry.Key.ToString()] = entry.Value;
> }
> Logger.Log(loggingEvent);
> }
> }
> }
>
> http://www.mail-archive.com/[email protected]/msg04357.html
>
>
> ----- Original Message ----
> From: AdamTappis <[email protected]>
> To: [email protected]
> Sent: Monday, August 17, 2009 11:08:44 AM
> Subject: Re: Adding custom logging properties
>
>
> Having a closer look at the documentation, the Properties property of the
> LoggingEvent class is a PropertiesDictionary which derives from
> ReadOnlyPropertiesDictionary which menas it can't be written to and hence
> it's not suitable for my purposes.
>
> Any ideas?
>
>
> AdamTappis wrote:
>>
>> Ross,
>>
>> I guess that's why I'm posting here, because I'm trying to devise a
>> pattern and some coding guidelines so that all our applications log
>> consistently. I considered wrapping log4net but all I've read advises
>> against that. So what I'm trying to achieve is an elegant solution that
>> makes the best use of the framework.
>>
>> You're right, I wish to log a collection of Key-Value pairs associated
>> with a given loggin event. e.g.
>> statistics -
>> <eventData><duration>3ms</duration><size>10kb</size></eventData>
>> details -
>> <eventData><customerID>3</customerID><orderID>10</orderID></eventData>
>>
>> The question I'm asking is how best to implement this with log4net?
>>
>> Should I write a wrapper or a helper class that accepts the key-Value
>> pairs collection as a parameter and returns a formattred XML string that
>> then get's logged?
>>
>> Maybe I should be creating a LoggingEvent in code manually, adding the
>> Key-Value pairs to the Properties collection and then using
>> ILog.Logger.Log to actually log the event rather than using Ilog.Info()
>> to
>> log. I could than write a custom layout class that serialises the
>> properties out as an XML string.
>>
>> like I said, I'm not sure and am looking for some disrection.
>>
>> Ideally I would have the following interface available to me:
>>
>> ILog.Info(string message, Dictionary customProperties)
>>
>> and then it would be the configuration that drives how the
>> customProperties are rendered by specifying the approporiate Layout
>> class.
>> That way I could format the customProperties to a file in one way and to
>> a
>> Db as XML etc... without embedding the formatting logic in my code.
>>
>>
>> Ross Hinkley wrote:
>>>
>>> Adam,
>>>
>>> How are these properties getting transformed from a logging call to XML?
>>> Are you asking if there's a way to modify a custom format on the fly and
>>> then turn the custom properties into XML? (I'm thinking of something
>>> like
>>> appending name-value pairs to the log format and having a custom
>>> appender
>>> do
>>> the XML conversion for you. This doesn't seem terribly elegant.)
>>>
>>> Maybe I'm over-trivializing, but it seems to me you should be able to
>>> use
>>> custom properties to take care of your current needs, converting your
>>> properties to XML in code, then modifying the ADO appender configuration
>>> to
>>> handle that property appropriately when the logging database is
>>> implemented.
>>>
>>> I guess another question would be what sorts of things need to be
>>> serialized? Are they going to be serialized from a class?
>>>
>>> -Ross
>>>
>>> On Mon, Aug 17, 2009 at 8:12 AM, AdamTappis <[email protected]>
>>> wrote:
>>>
>>>>
>>>> Hi,
>>>>
>>>> I've been evaluating log4net recently with a view to using the
>>>> framework
>>>> as
>>>> a loggin standard for our enterprise applicaption. I see it very easy
>>>> to
>>>> extend the framework, however I have some specific logging requirements
>>>> and
>>>> I'm not sure what would be the easiest way implement these with minimal
>>>> coding.
>>>>
>>>> At some time in the future, we aim to build a consolidated logging
>>>> database
>>>> that will capture logging data from our server application suite. The
>>>> information that needs to be logged will differ per
>>>> service/applicaption
>>>> and
>>>> to that end I would aim to have a table schema that has the standard
>>>> logging
>>>> columns plus a generic XML column (no defined schema) to act as a
>>>> property
>>>> bag for custom information associated with a specific event.
>>>>
>>>> We don't have time to develop the logging repository at present,
>>>> however
>>>> I'm
>>>> stressing that we should build logging into our code from the start
>>>> rather
>>>> than trying to retro-fitting it later which would be far more costly.
>>>>
>>>> So I need my code to be able to fire off logging messages with a list
>>>> or
>>>> arbitrary custom properties that get formatted into an XML string. For
>>>> now
>>>> the messages can be written to a text file and later we'll configure
>>>> and
>>>> AdoNetAppender to write to out logging database.
>>>>
>>>> So my questions are:
>>>> - Is this possible using configuration only? (I susopect not)
>>>> - If not then which custom objects do I need to create? From what I've
>>>> seen
>>>> so far I think I'll need to code my own Layout Class
>>>> - The ILog interface doesn't doesn't expose a method that takes a
>>>> property
>>>> bag (or dictionary), but it appears that the LoggingEvent object does.
>>>> Does
>>>> that mean I would have to make my logging calls using
>>>> ILog.Logger.Log()?
>>>> - Could someone provide some sample code please?
>>>> --
>>>> View this message in context:
>>>> http://www.nabble.com/Adding-custom-logging-properties-tp25006538p25006538.html
>>>> Sent from the Log4net - Users mailing list archive at Nabble.com.
>>>>
>>>>
>>>
>>>
>>
>>
>
> --
> View this message in context:
> http://www.nabble.com/Adding-custom-logging-properties-tp25006538p25008536.html
> Sent from the Log4net - Users mailing list archive at Nabble.com.
>
>
--
View this message in context:
http://www.nabble.com/Adding-custom-logging-properties-tp25006538p25023045.html
Sent from the Log4net - Users mailing list archive at Nabble.com.
