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Diffstat (limited to 'kamon-core/src/main/scala/kamon/trace/SpanContextCodec.scala')
-rw-r--r--kamon-core/src/main/scala/kamon/trace/SpanContextCodec.scala105
1 files changed, 0 insertions, 105 deletions
diff --git a/kamon-core/src/main/scala/kamon/trace/SpanContextCodec.scala b/kamon-core/src/main/scala/kamon/trace/SpanContextCodec.scala
deleted file mode 100644
index 8e3a446b..00000000
--- a/kamon-core/src/main/scala/kamon/trace/SpanContextCodec.scala
+++ /dev/null
@@ -1,105 +0,0 @@
-/* =========================================================================================
- * Copyright © 2013-2017 the kamon project <http://kamon.io/>
- *
- * 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.trace
-
-import java.net.{URLDecoder, URLEncoder}
-import java.util.concurrent.ThreadLocalRandom
-
-import scala.collection.JavaConverters._
-import io.opentracing.propagation.TextMap
-import kamon.util.HexCodec
-
-
-trait SpanContextCodec[T] {
- def inject(spanContext: SpanContext, carrier: T): Unit
- def extract(carrier: T, sampler: Sampler): SpanContext
-}
-
-object SpanContextCodec {
-
- val TextMap: SpanContextCodec[TextMap] = new TextMapSpanCodec(
- traceIDKey = "TRACE_ID",
- parentIDKey = "PARENT_ID",
- spanIDKey = "SPAN_ID",
- sampledKey = "SAMPLED",
- baggagePrefix = "BAGGAGE_",
- baggageValueEncoder = identity,
- baggageValueDecoder = identity
- )
-
- val ZipkinB3: SpanContextCodec[TextMap] = new TextMapSpanCodec(
- traceIDKey = "X-B3-TraceId",
- parentIDKey = "X-B3-ParentSpanId",
- spanIDKey = "X-B3-SpanId",
- sampledKey = "X-B3-Sampled",
- baggagePrefix = "X-B3-Baggage-",
- baggageValueEncoder = urlEncode,
- baggageValueDecoder = urlDecode
- )
-
- private def urlEncode(s: String): String = URLEncoder.encode(s, "UTF-8")
- private def urlDecode(s: String): String = URLDecoder.decode(s, "UTF-8")
-
- private class TextMapSpanCodec(traceIDKey: String, parentIDKey: String, spanIDKey: String, sampledKey: String, baggagePrefix: String,
- baggageValueEncoder: String => String, baggageValueDecoder: String => String) extends SpanContextCodec[TextMap] {
-
- override def inject(spanContext: SpanContext, carrier: TextMap): Unit = {
- carrier.put(traceIDKey, encodeLong(spanContext.traceID))
- carrier.put(parentIDKey, encodeLong(spanContext.parentID))
- carrier.put(spanIDKey, encodeLong(spanContext.spanID))
-
- spanContext.baggageItems().iterator().asScala.foreach { entry =>
- carrier.put(baggagePrefix + entry.getKey, baggageValueEncoder(entry.getValue))
- }
- }
-
- override def extract(carrier: TextMap, sampler: Sampler): SpanContext = {
- var traceID: String = null
- var parentID: String = null
- var spanID: String = null
- var sampled: String = null
- var baggage: Map[String, String] = Map.empty
-
- carrier.iterator().asScala.foreach { entry =>
- if(entry.getKey.equals(traceIDKey))
- traceID = baggageValueDecoder(entry.getValue)
- else if(entry.getKey.equals(parentIDKey))
- parentID = baggageValueDecoder(entry.getValue)
- else if(entry.getKey.equals(spanIDKey))
- spanID = baggageValueDecoder(entry.getValue)
- else if(entry.getKey.equals(sampledKey))
- sampled = entry.getValue
- else if(entry.getKey.startsWith(baggagePrefix))
- baggage = baggage + (entry.getKey.substring(baggagePrefix.length) -> baggageValueDecoder(entry.getValue))
- }
-
- if(traceID != null && spanID != null) {
- val actualParent = if(parentID == null) 0L else decodeLong(parentID)
- val isSampled = if(sampled == null) sampler.decide(ThreadLocalRandom.current().nextLong()) else sampled.equals("1")
-
- new SpanContext(decodeLong(traceID), decodeLong(spanID), actualParent, isSampled, baggage)
- } else null
- }
-
- private def decodeLong(input: String): Long =
- HexCodec.lowerHexToUnsignedLong(input)
-
- private def encodeLong(input: Long): String =
- HexCodec.toLowerHex(input)
-
- }
-}