1 files changed, 51 insertions, 0 deletions
diff --git a/kamon-core/src/legacy-main/scala/kamon/trace/TraceSettings.scala b/kamon-core/src/legacy-main/scala/kamon/trace/TraceSettings.scala
new file mode 100644
index 00000000..c3a83e93
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+++ b/kamon-core/src/legacy-main/scala/kamon/trace/TraceSettings.scala
@@ -0,0 +1,51 @@
+/*
+ * =========================================================================================
+ * Copyright © 2013-2015 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 kamon.util.ConfigTools.Syntax
+import com.typesafe.config.Config
+import kamon.util.NanoInterval
+
+case class TraceSettings(levelOfDetail: LevelOfDetail, sampler: Sampler, tokenGenerator: () ⇒ String)
+
+object TraceSettings {
+  def apply(config: Config): TraceSettings = {
+    val tracerConfig = config.getConfig("kamon.trace")
+
+    val detailLevel: LevelOfDetail = tracerConfig.getString("level-of-detail") match {
+      case "metrics-only" ⇒ LevelOfDetail.MetricsOnly
+      case "simple-trace" ⇒ LevelOfDetail.SimpleTrace
+      case other          ⇒ sys.error(s"Unknown tracer level of detail [$other] present in the configuration file.")
+    }
+
+    val sampler: Sampler =
+      if (detailLevel == LevelOfDetail.MetricsOnly) NoSampling
+      else tracerConfig.getString("sampling") match {
+        case "all"       ⇒ SampleAll
+        case "random"    ⇒ new RandomSampler(tracerConfig.getInt("random-sampler.chance"))
+        case "ordered"   ⇒ new OrderedSampler(tracerConfig.getInt("ordered-sampler.sample-interval"))
+        case "threshold" ⇒ new ThresholdSampler(new NanoInterval(tracerConfig.getFiniteDuration("threshold-sampler.minimum-elapsed-time").toNanos))
+        case "clock"     ⇒ new ClockSampler(new NanoInterval(tracerConfig.getFiniteDuration("clock-sampler.pause").toNanos))
+      }
+
+    val dynamic = new akka.actor.ReflectiveDynamicAccess(getClass.getClassLoader)
+    val tokenGeneratorFQN = tracerConfig.getString("token-generator")
+    val tokenGenerator = dynamic.createInstanceFor[() ⇒ String](tokenGeneratorFQN, Nil).get // let's bubble up any problems.
+
+    TraceSettings(detailLevel, sampler, tokenGenerator)
+  }
+}
+\ No newline at end of file