I think to get a copy of the configuration you could try to do:
ConfigurationSource source = configuration.getConfgurationSource();
Configuration configuration = null;
If (source != null) {
LoggerContext context = LogManager.getContext(false);
configuration = ConfigurationFactory.getInstance().getConfiguration(context,
source);
}
If getConfigurationSource returns null it would normally mean it wasn’t
configured from a file. This solution wouldn’t handle that case but from what
you have asked for this should be good enough.
Ralph
> On Feb 9, 2018, at 10:37 AM, Ralph Goers <[email protected]> wrote:
>
> Would you mind creating a Jira issue requesting that the clone method, or
> some variation of it, be added to Configuration implementations?
>
> Ralph
>
>> On Feb 9, 2018, at 9:14 AM, Mike Kienenberger <[email protected]> wrote:
>>
>> Doh! I thought you had provided me with the magic bullet. :)
>>
>> Ok. I'll back to programmically registering info read from my
>> XmlConfiguration into the active Context.
>>
>> On Fri, Feb 9, 2018 at 11:12 AM, Ralph Goers <[email protected]>
>> wrote:
>>> It occurs to me that there is a problem with my suggest in that you cannot
>>> create a new Configuration using the currently active configuration as that
>>> will cause problems. The current configuration needs to be cloned. I don’t
>>> know if we have an easy way to do that.
>>>
>>> Ralph
>>>
>>>> On Feb 9, 2018, at 9:08 AM, Ralph Goers <[email protected]> wrote:
>>>>
>>>> If you want to add to their configuration then you should use a
>>>> CompositeConfiguration. In that case I would get the current
>>>> configuration, create your own Configuration, add them both to a new
>>>> CompositeConfiguration and then call
>>>> Configurator.initialize(compositeConfiguration).
>>>>
>>>> Ralph
>>>>
>>>>> On Feb 9, 2018, at 9:03 AM, Mike Kienenberger <[email protected]> wrote:
>>>>>
>>>>> Thanks, Ralph,
>>>>>
>>>>> While that does work (tested) and could be useful in some instances,
>>>>> it would require that we extract and keep synced the logging
>>>>> configuration from EVIL.jar, then append our own changes to it. I can
>>>>> see how this will be helpful when I'm doing development in this
>>>>> environment. But it doesn't meet the need of only changing logging so
>>>>> that our own module logs to a different location.
>>>>>
>>>>> On Thu, Feb 8, 2018 at 7:26 PM, Ralph Goers <[email protected]>
>>>>> wrote:
>>>>>> If you want to replace the existing configuration you should be able to
>>>>>> do:
>>>>>>
>>>>>> Configurator.initialize(“MyApp”, “app-log4j2.xml”);
>>>>>>
>>>>>> This will look for a file named app-log4j2.xml on the class path.
>>>>>>
>>>>>> Ralph
>>>>>>
>>>>>>> On Feb 8, 2018, at 1:28 PM, Mike Kienenberger <[email protected]>
>>>>>>> wrote:
>>>>>>>
>>>>>>> As others have reported in years past, the examples in the docs for
>>>>>>>
>>>>>>> Programmatically Modifying the Current Configuration after
>>>>>>> Initialization
>>>>>>>
>>>>>>> are out of date. They don't compile. They don't work (affect the
>>>>>>> existing logging) even if you do fix the errors.
>>>>>>>
>>>>>>> Here's my situation:
>>>>>>>
>>>>>>> I am working in an environment with EVIL.JAR which includes a
>>>>>>> log4j2.xml file.
>>>>>>> I can't change the jar. I can't specific a System Property to override
>>>>>>> it.
>>>>>>>
>>>>>>> My code gets called as a loaded module long after the logging system
>>>>>>> is initialized.
>>>>>>>
>>>>>>> I want logging in my own code to go to a different location, and
>>>>>>> preferably I'd like to read the configuration in from a log4j2.xml
>>>>>>> file so that anyone who uses my module isn't victim to the same evil
>>>>>>> hardcoded-logging practices of EVIL.JAR.
>>>>>>>
>>>>>>> Creating an XMLConfiguration and initializing it lets me read the xml
>>>>>>> file easily enough. Looping through the data gets me the Appenders,
>>>>>>> Filters and Loggers. But I still can't use them to modify the
>>>>>>> existing configuration.
>>>>>>>
>>>>>>> Another person took the approach of using JUL instead. I hate JUL and
>>>>>>> I'd really rather not have to go down that route.
>>>>>>>
>>>>>>> Thanks in advance.
>>>>>>> -Mike
>>>>>>>
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>>>>>>
>>>>>>
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