Thanks, Sean. Exactly what I was looking for.
IMO, clojure.tools.logging could of made this easier: log
implementation from classpath by default with override by client when
needed.
On Nov 17, 11:32 pm, Sean Corfield <seancorfi...@gmail.com> wrote:
> Note: if you just want something that will execute at startup and
> force _all_ logging to use log4j, instead of wrapping code in (binding
> ..) then you probably want something like this:
>
> (ns your.namespace
> (:require [clojure.tools.logging :as log])
> (:require [clojure.tools.logging.impl :as impl]))
>
> (alter-var-root (var log/*logger-factory*) (constantly (impl/log4j-factory)))
>
> This is what we ended with in our code to ensure log4j was selected at
> startup...
>
> Sean
>
>
>
>
>
>
>
> On Thu, Nov 17, 2011 at 7:04 PM, Mark Rathwell <mark.rathw...@gmail.com>
> wrote:
> > You rebind dynamic vars with binding, so your use would look something
> > like this:
>
> > (binding [*logger-factory* (log-impl/log4j-factory)]
> > (do-stuff-with-the-logger-factory-rebound))
>
> > On Thu, Nov 17, 2011 at 5:17 PM, vitalyper <vitaly...@yahoo.com> wrote:
> >> clojure.tools.logging defines *logger-factory* and initializes it with
> >> first logger implementation on the class path
>
> >> (def ^{:doc
> >> "An instance satisfying the impl/LoggerFactory protocol. Used
> >> internally to
> >> obtain an impl/Logger. Defaults to the value returned from impl/
> >> find-factory."
> >> :dynamic true}
> >> *logger-factory*
> >> (impl/find-factory))
>
> >> In my own namespace I want to redefine *logger-factory* to log4j one.
> >> Tried different variations (def, set!, etc) in 1.3.0 with no avail.
> >> (ns my.foo
> >> (:gen-class)
> >> (:use
> >> [clojure.tools.logging :only (*logger-factory* info debug)])
> >> (:require
> >> [clojure.string :as s1]
> >> [clojure.tools.logging.impl :as log-impl])
> >> )
>
> >> (defn init-logging
> >> "Force log4j factory for core tools logging"
> >> []
> >> (def *logger-factory* (log-impl/log4j-factory)))
> >> ; CompilerException java.lang.IllegalStateException: *logger-factory*
> >> already refers to: #'clojure.tools.logging/*logger-factory* in
> >> namespace: infrared.common
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