kamon.instrumentation.logback.tools.TraceIDConverter.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.trace.Identifier

class TraceIDConverter extends ClassicConverter {

  override def convert(event: ILoggingEvent): String = {
    val currentSpan = Kamon.currentSpan()
    val traceID = currentSpan.trace.id

    if (traceID == Identifier.Empty)
      "undefined"
    else
      traceID.string
  }
}