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author | Ivan Topolnak <itopolnak@despegar.com> | 2014-01-02 18:09:53 -0300 |
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committer | Ivan Topolnak <itopolnak@despegar.com> | 2014-01-13 17:37:20 -0300 |
commit | 7a10c0ef2a6566229e8571f6d385ca2ff794cc20 (patch) | |
tree | cecd7ce6eb7a71f967eaa1605615780fa94d346c /kamon-core/src/main/scala/kamon/trace/Trace.scala | |
parent | 54143e4af6182b967736abc60a7fb20c88dd6587 (diff) | |
download | Kamon-7a10c0ef2a6566229e8571f6d385ca2ff794cc20.tar.gz Kamon-7a10c0ef2a6566229e8571f6d385ca2ff794cc20.tar.bz2 Kamon-7a10c0ef2a6566229e8571f6d385ca2ff794cc20.zip |
integrate trace and metrics into the base project
Diffstat (limited to 'kamon-core/src/main/scala/kamon/trace/Trace.scala')
-rw-r--r-- | kamon-core/src/main/scala/kamon/trace/Trace.scala | 114 |
1 files changed, 114 insertions, 0 deletions
diff --git a/kamon-core/src/main/scala/kamon/trace/Trace.scala b/kamon-core/src/main/scala/kamon/trace/Trace.scala new file mode 100644 index 00000000..31e8185a --- /dev/null +++ b/kamon-core/src/main/scala/kamon/trace/Trace.scala @@ -0,0 +1,114 @@ +/* =================================================== + * Copyright © 2013 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.Kamon +import akka.actor._ +import scala.Some +import kamon.trace.Trace.Register +import scala.concurrent.duration._ +import java.util.concurrent.atomic.AtomicLong + +object Trace extends ExtensionId[TraceExtension] with ExtensionIdProvider { + def lookup(): ExtensionId[_ <: Extension] = Trace + def createExtension(system: ExtendedActorSystem): TraceExtension = new TraceExtension(system) + + /*** Protocol */ + case object Register + + /** User API */ + //private[trace] val traceContext = new DynamicVariable[Option[TraceContext]](None) + private[trace] val traceContext = new ThreadLocal[Option[TraceContext]] { + override def initialValue(): Option[TraceContext] = None + } + private[trace] val tranid = new AtomicLong() + + def context() = traceContext.get + private def set(ctx: Option[TraceContext]) = traceContext.set(ctx) + + def clear: Unit = traceContext.remove() + def start(name: String)(implicit system: ActorSystem): TraceContext = { + val ctx = newTraceContext(name) + ctx.start(name) + set(Some(ctx)) + + ctx + } + + def withContext[T](ctx: Option[TraceContext])(thunk: ⇒ T): T = { + val oldval = context + set(ctx) + + try thunk + finally set(oldval) + } + + def transformContext(f: TraceContext ⇒ TraceContext): Unit = { + context.map(f).foreach(ctx ⇒ set(Some(ctx))) + } + + def finish(): Option[TraceContext] = { + val ctx = context() + ctx.map(_.finish) + clear + ctx + } + + // TODO: FIX + def newTraceContext(name: String)(implicit system: ActorSystem): TraceContext = TraceContext(Kamon(Trace).api, tranid.getAndIncrement, name) + + def startSegment(category: Segments.Category, description: String = "", attributes: Map[String, String] = Map()): SegmentCompletionHandle = { + val start = Segments.Start(category, description, attributes) + SegmentCompletionHandle(start) + } + + def startSegment(start: Segments.Start): SegmentCompletionHandle = SegmentCompletionHandle(start) + + case class SegmentCompletionHandle(start: Segments.Start) { + def complete(): Unit = { + val end = Segments.End() + println(s"Completing the Segment: $start - $end") + } + def complete(end: Segments.End): Unit = { + println(s"Completing the Segment: $start - $end") + } + } +} + +class TraceExtension(system: ExtendedActorSystem) extends Kamon.Extension { + val api: ActorRef = system.actorOf(Props[TraceManager], "kamon-trace") +} + +class TraceManager extends Actor with ActorLogging { + var listeners: Seq[ActorRef] = Seq.empty + + def receive = { + case Register ⇒ + listeners = sender +: listeners + log.info("Registered [{}] as listener for Kamon traces", sender) + + case segment: UowSegment ⇒ + val tracerName = segment.id.toString + context.child(tracerName).getOrElse(newTracer(tracerName)) ! segment + + case trace: UowTrace ⇒ + listeners foreach (_ ! trace) + } + + def newTracer(name: String): ActorRef = { + context.actorOf(UowTraceAggregator.props(self, 30 seconds), name) + } +} |