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package kamon
import scala.util.Try
import com.typesafe.config.{Config, ConfigFactory}
import org.slf4j.LoggerFactory
trait Configuration { self: ClassLoading =>
private val logger = LoggerFactory.getLogger(classOf[Configuration])
private var _currentConfig: Config = ConfigFactory.load(self.classLoader())
private var _onReconfigureHooks = Seq.empty[Configuration.OnReconfigureHook]
/**
* Retrieve Kamon's current configuration.
*/
def config(): Config =
_currentConfig
/**
* Supply a new Config instance to rule Kamon's world.
*/
def reconfigure(newConfig: Config): Unit = synchronized {
_currentConfig = newConfig
_onReconfigureHooks.foreach(hook => {
Try(hook.onReconfigure(newConfig)).failed.foreach(error =>
logger.error("Exception occurred while trying to run a OnReconfigureHook", error)
)
})
}
/**
* Register a reconfigure hook that will be run when the a call to Kamon.reconfigure(config) is performed. All
* registered hooks will run sequentially in the same Thread that calls Kamon.reconfigure(config).
*/
def onReconfigure(hook: Configuration.OnReconfigureHook): Unit = synchronized {
_onReconfigureHooks = hook +: _onReconfigureHooks
}
/**
* Register a reconfigure hook that will be run when the a call to Kamon.reconfigure(config) is performed. All
* registered hooks will run sequentially in the same Thread that calls Kamon.reconfigure(config).
*/
def onReconfigure(hook: (Config) => Unit): Unit = {
onReconfigure(new Configuration.OnReconfigureHook {
override def onReconfigure(newConfig: Config): Unit = hook.apply(newConfig)
})
}
}
object Configuration {
trait OnReconfigureHook {
def onReconfigure(newConfig: Config): Unit
}
}
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