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• opentracing-play_2.12
• 0.22-2.8
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• HeadersTextMap.scala

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io.opentracing.play.HeadersTextMap.scala Maven / Gradle / Ivy

package io.opentracing.play

import com.google.common.collect.Maps
import io.opentracing.propagation.TextMap
import play.api.mvc.Headers
import scala.jdk.CollectionConverters._

class HeadersTextMap(headers: Headers) extends TextMap {
  def iterator =
    headers.toMap.iterator.map {
      case (name, values) => Maps.immutableEntry(name, values.mkString(","))
    }.asJava

  def put(key: String, value: String) = throw new UnsupportedOperationException
}