+ core: include Tags and Status in TraceInfo and SegmentInfo and closes

#377

kamon-core/src/main/scala/kamon/trace/MetricsOnlyContext.scala

@@ -61,7 +61,7 @@ private[kamon] class MetricsOnlyContext(traceName: String,
     _elapsedTime = traceElapsedTime
 
     if (Kamon.metrics.shouldTrack(name, TraceMetrics.category)) {
-      val traceEntity = Kamon.metrics.entity(TraceMetrics, name)
+      val traceEntity = Kamon.metrics.entity(TraceMetrics, name, _tags.toMap)
       traceEntity.elapsedTime.record(traceElapsedTime.nanos)
       if (withError) traceEntity.errors.increment()
     }
@@ -125,7 +125,7 @@ private[kamon] class MetricsOnlyContext(traceName: String,
       segmentTags: Map[String, String]) extends Segment {
 
     private val _startTimestamp = RelativeNanoTimestamp.now
-    protected val _tags = TrieMap.empty[String, String] ++= segmentTags
+    private val _tags = TrieMap.empty[String, String] ++= segmentTags
 
     @volatile private var _segmentName = segmentName
     @volatile private var _elapsedTime = NanoInterval.default

kamon-core/src/main/scala/kamon/trace/TraceContext.scala

@@ -110,9 +110,7 @@ case object EmptyTraceContext extends TraceContext {
   def startSegment(segmentName: String, category: String, library: String, tags: Map[String, String]): Segment = EmptySegment
   def addMetadata(key: String, value: String): Unit = {}
   def startTimestamp = new RelativeNanoTimestamp(0L)
-  def addTags(tags: Map[String, String]): Unit = {}
   def addTag(key: String, value: String): Unit = {}
-  def removeTags(tags: Map[String, String]): Unit = {}
   def removeTag(key: String, value: String): Boolean = false
 
   case object EmptySegment extends Segment {

kamon-core/src/main/scala/kamon/trace/TracerModule.scala

@@ -194,5 +194,5 @@ private[kamon] object TracerModuleImpl {
     new TracerModuleImpl(metricsExtension, config)
 }
 
-case class TraceInfo(name: String, token: String, timestamp: NanoTimestamp, elapsedTime: NanoInterval, metadata: Map[String, String], segments: List[SegmentInfo])
-case class SegmentInfo(name: String, category: String, library: String, timestamp: NanoTimestamp, elapsedTime: NanoInterval, metadata: Map[String, String], tags: Map[String, String])
+case class TraceInfo(name: String, token: String, timestamp: NanoTimestamp, elapsedTime: NanoInterval, metadata: Map[String, String], tags: Map[String, String], segments: List[SegmentInfo], status: Status)
+case class SegmentInfo(name: String, category: String, library: String, timestamp: NanoTimestamp, elapsedTime: NanoInterval, metadata: Map[String, String], tags: Map[String, String], status: Status)

kamon-core/src/main/scala/kamon/trace/TracingContext.scala

@@ -1,6 +1,6 @@
 /*
  * =========================================================================================
- * Copyright © 2013-2014 the kamon project <http://kamon.io/>
+ * Copyright © 2013-2016 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
@@ -57,6 +57,11 @@ private[trace] class TracingContext(traceName: String,
     traceInfoSink(this)
   }
 
+  override def finishWithError(cause: Throwable): Unit = {
+    super.finishWithError(cause)
+    traceInfoSink(this)
+  }
+
   override def finishSegment(segmentName: String, category: String, library: String, duration: NanoInterval, tags: Map[String, String], isFinishedWithError: Boolean = false): Unit = {
     _openSegments.decrementAndGet()
     super.finishSegment(segmentName, category, library, duration, tags, isFinishedWithError)
@@ -79,7 +84,7 @@ private[trace] class TracingContext(traceName: String,
         log.warning("Segment [{}] will be left out of TraceInfo because it was still open.", segment.name)
     }
 
-    TraceInfo(name, token, _startTimestamp, elapsedTime, _metadata.toMap, segmentsInfo.result())
+    TraceInfo(name, token, _startTimestamp, elapsedTime, _metadata.toMap, tags, segmentsInfo.result(), status)
   }
 
   class TracingSegment(segmentName: String,
@@ -98,7 +103,7 @@ private[trace] class TracingContext(traceName: String,
       // expensive and inaccurate, but we can do that once for the trace and calculate all the segments relative to it.
       val segmentStartTimestamp = new NanoTimestamp((this.startTimestamp.nanos - traceRelativeTimestamp.nanos) + traceStartTimestamp.nanos)
 
-      SegmentInfo(this.name, category, library, segmentStartTimestamp, this.elapsedTime, metadata.toMap, _tags.toMap)
+      SegmentInfo(this.name, category, library, segmentStartTimestamp, this.elapsedTime, metadata.toMap, tags, status)
     }
   }
 }

kamon-core/src/test/scala/kamon/trace/SimpleTraceSpec.scala

@@ -20,6 +20,7 @@ import kamon.Kamon
 import kamon.testkit.BaseKamonSpec
 
 import scala.concurrent.duration._
+import scala.util.control.NoStackTrace
 
 class SimpleTraceSpec extends BaseKamonSpec("simple-trace-spec") {
 
@@ -42,6 +43,71 @@ class SimpleTraceSpec extends BaseKamonSpec("simple-trace-spec") {
       traceInfo.segments.find(_.name == "segment-two") should be('defined)
     }
 
+    "send a TraceInfo when the trace has finished with error and all segments are finished" in {
+      Kamon.tracer.subscribe(testActor)
+
+      Tracer.withContext(newContext("simple-trace-with-error-and-without-segments")) {
+        Tracer.currentContext.startSegment("segment-one", "test-segment", "test").finish()
+        Tracer.currentContext.startSegment("segment-two", "test-segment", "test").finish()
+        Tracer.currentContext.finishWithError(TraceException("awesome-trace-error"))
+      }
+
+      val traceInfo = expectMsgType[TraceInfo]
+      Kamon.tracer.unsubscribe(testActor)
+
+      traceInfo.name should be("simple-trace-with-error-and-without-segments")
+      traceInfo.status should be(Status.FinishedWithError)
+      traceInfo.segments.size should be(2)
+      traceInfo.segments.find(_.name == "segment-one") should be('defined)
+      traceInfo.segments.find(_.name == "segment-two") should be('defined)
+    }
+
+    "send a TraceInfo when the trace has finished with error and all segments are finished with error" in {
+      Kamon.tracer.subscribe(testActor)
+
+      Tracer.withContext(newContext("simple-trace-with-error-and-without-segments")) {
+        Tracer.currentContext.startSegment("segment-one-finished-with-error", "test-segment", "test").finishWithError(SegmentException("awesome-segment-exception"))
+        Tracer.currentContext.startSegment("segment-two-finished-with-error", "test-segment", "test").finishWithError(SegmentException("awesome-segment-exception"))
+        Tracer.currentContext.finishWithError(TraceException("awesome-trace-error"))
+      }
+
+      val traceInfo = expectMsgType[TraceInfo]
+      Kamon.tracer.unsubscribe(testActor)
+
+      traceInfo.name should be("simple-trace-with-error-and-without-segments")
+      traceInfo.status should be(Status.FinishedWithError)
+      traceInfo.segments.size should be(2)
+
+      val segmentOne = traceInfo.segments.find(_.name == "segment-one-finished-with-error")
+      val segmentTwo = traceInfo.segments.find(_.name == "segment-two-finished-with-error")
+
+      segmentOne.get.status should be(Status.FinishedWithError)
+      segmentTwo.get.status should be(Status.FinishedWithError)
+    }
+
+    "send a TraceInfo when the trace has finished and all segments are finished and both contains tags" in {
+      Kamon.tracer.subscribe(testActor)
+
+      Tracer.withContext(newContext("simple-trace-without-segments", "awesome-token", Map("environment" -> "production"))) {
+        Tracer.currentContext.startSegment("segment-one", "test-segment", "test", Map("segment-one-info" -> "info")).finish()
+        Tracer.currentContext.startSegment("segment-two", "test-segment", "test", Map("segment-two-info" -> "info")).finish()
+        Tracer.currentContext.finish()
+      }
+
+      val traceInfo = expectMsgType[TraceInfo]
+      Kamon.tracer.unsubscribe(testActor)
+
+      traceInfo.name should be("simple-trace-without-segments")
+      traceInfo.tags should be(Map("environment" -> "production"))
+      traceInfo.segments.size should be(2)
+
+      val segmentOne = traceInfo.segments.find(_.name == "segment-one")
+      val segmentTwo = traceInfo.segments.find(_.name == "segment-two")
+
+      segmentOne.get.tags should be(Map("segment-one-info" -> "info"))
+      segmentTwo.get.tags should be(Map("segment-two-info" -> "info"))
+    }
+
     "incubate the tracing context if there are open segments after finishing" in {
       Kamon.tracer.subscribe(testActor)
 
@@ -68,3 +134,6 @@ class SimpleTraceSpec extends BaseKamonSpec("simple-trace-spec") {
 
   }
 }
+
+case class TraceException(message: String) extends RuntimeException(message) with NoStackTrace
+case class SegmentException(message: String) extends RuntimeException(message) with NoStackTrace