kamon.instrumentation.logback.tools.ContextEntryConverter.scala Maven / Gradle / Ivy
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/*
* Copyright 2013-2021 The Kamon Project
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package kamon.instrumentation.logback.tools
import ch.qos.logback.classic.pattern.ClassicConverter
import ch.qos.logback.classic.spi.ILoggingEvent
import kamon.Kamon
import kamon.context.Context
class ContextEntryConverter extends ClassicConverter {
@volatile private var _entryKey: Context.Key[Any] = null
@volatile private var _default: String = null
override def start(): Unit = {
super.start()
val firstOption = getFirstOption()
if (firstOption != null && firstOption.nonEmpty) {
val optionParts = firstOption.split(':')
_default = if (optionParts.length > 1) optionParts(1) else ""
_entryKey = Context.key(optionParts(0), _default)
}
}
override def convert(event: ILoggingEvent): String = {
if (_entryKey != null) {
val context = Kamon.currentContext()
context.get(_entryKey).toString
} else _default
}
}