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Diffstat (limited to 'kamon-core/src/legacy-main/scala/kamon/trace/TracerModule.scala')
| -rw-r--r-- | kamon-core/src/legacy-main/scala/kamon/trace/TracerModule.scala | 197 |
1 files changed, 197 insertions, 0 deletions
diff --git a/kamon-core/src/legacy-main/scala/kamon/trace/TracerModule.scala b/kamon-core/src/legacy-main/scala/kamon/trace/TracerModule.scala new file mode 100644 index 00000000..552962eb --- /dev/null +++ b/kamon-core/src/legacy-main/scala/kamon/trace/TracerModule.scala @@ -0,0 +1,197 @@ +/* + * ========================================================================================= + * 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 + * + * 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.util + +import akka.actor._ +import akka.event.{Logging, LoggingAdapter} +import com.typesafe.config.Config +import kamon.Kamon +import kamon.metric.MetricsModule +import kamon.util._ + +import scala.collection.JavaConverters._ + +trait TracerModule { + def newContext(name: String): TraceContext + def newContext(name: String, token: Option[String]): TraceContext + def newContext(name: String, token: Option[String], tags: Map[String, String]): TraceContext + def newContext(name: String, token: Option[String], tags: Map[String, String], timestamp: RelativeNanoTimestamp, state: Status, isLocal: Boolean): TraceContext + + def subscribe(subscriber: ActorRef): Unit + def unsubscribe(subscriber: ActorRef): Unit +} + +object Tracer { + private[kamon] val _traceContextStorage = new ThreadLocal[TraceContext] { + override def initialValue(): TraceContext = EmptyTraceContext + } + + def currentContext: TraceContext = + _traceContextStorage.get() + + def setCurrentContext(context: TraceContext): Unit = + _traceContextStorage.set(context) + + def clearCurrentContext: Unit = + _traceContextStorage.remove() + + def withContext[T](context: TraceContext)(code: ⇒ T): T = { + val oldContext = _traceContextStorage.get() + _traceContextStorage.set(context) + + try code finally _traceContextStorage.set(oldContext) + } + + // Java variant. + def withContext[T](context: TraceContext, code: Supplier[T]): T = + withContext(context)(code.get) + + def withNewContext[T](traceName: String, traceToken: Option[String], tags: Map[String, String], autoFinish: Boolean)(code: ⇒ T): T = { + withContext(Kamon.tracer.newContext(traceName, traceToken, tags)) { + val codeResult = code + if (autoFinish) + currentContext.finish() + + codeResult + } + } + + def withNewContext[T](traceName: String)(code: ⇒ T): T = + withNewContext(traceName, None)(code) + + def withNewContext[T](traceName: String, tags: Map[String, String])(code: ⇒ T): T = + withNewContext(traceName, None, tags)(code) + + def withNewContext[T](traceName: String, traceToken: Option[String])(code: ⇒ T): T = + withNewContext(traceName, traceToken, Map.empty[String, String])(code) + + def withNewContext[T](traceName: String, traceToken: Option[String], tags: Map[String, String])(code: ⇒ T): T = + withNewContext(traceName, traceToken, tags, autoFinish = false)(code) + + def withNewContext[T](traceName: String, autoFinish: Boolean)(code: ⇒ T): T = + withNewContext(traceName, None, Map.empty[String, String], autoFinish)(code) + + def withNewContext[T](traceName: String, tags: Map[String, String], autoFinish: Boolean)(code: ⇒ T): T = + withNewContext(traceName, None, tags, autoFinish)(code) + + // Java variants. + def withNewContext[T](traceName: String, traceToken: Option[String], autoFinish: Boolean, code: Supplier[T]): T = + withNewContext(traceName, traceToken, Map.empty[String, String], autoFinish)(code.get) + + def withNewContext[T](traceName: String, traceToken: Option[String], tags: util.Map[String, String], autoFinish: Boolean, code: Supplier[T]): T = + withNewContext(traceName, traceToken, tags.asScala.toMap, autoFinish)(code.get) + + def withNewContext[T](traceName: String, code: Supplier[T]): T = + withNewContext(traceName, None, Map.empty[String, String], autoFinish = false)(code.get) + + def withNewContext[T](traceName: String, tags: util.Map[String, String], code: Supplier[T]): T = + withNewContext(traceName, None, tags.asScala.toMap, autoFinish = false)(code.get) + + def withNewContext[T](traceName: String, traceToken: Option[String], code: Supplier[T]): T = + withNewContext(traceName, traceToken, Map.empty[String, String], autoFinish = false)(code.get) + + def withNewContext[T](traceName: String, traceToken: Option[String], tags: util.Map[String, String], code: Supplier[T]): T = + withNewContext(traceName, traceToken, tags.asScala.toMap, autoFinish = false)(code.get) + + def withNewContext[T](traceName: String, autoFinish: Boolean, code: Supplier[T]): T = + withNewContext(traceName, None, Map.empty[String, String], autoFinish)(code.get) + + def withNewContext[T](traceName: String, tags: util.Map[String, String], autoFinish: Boolean, code: Supplier[T]): T = + withNewContext(traceName, None, tags.asScala.toMap, autoFinish)(code.get) +} + +private[kamon] class TracerModuleImpl(metricsExtension: MetricsModule, config: Config) extends TracerModule { + @volatile private var _settings = TraceSettings(config) + + private val _subscriptions = new LazyActorRef + private val _incubator = new LazyActorRef + + private def newToken: String = _settings.tokenGenerator() + + def newContext(name: String): TraceContext = + createTraceContext(name, None) + + def newContext(name: String, token: Option[String]): TraceContext = + createTraceContext(name, token) + + def newContext(name: String, token: Option[String], tags: Map[String, String]): TraceContext = + createTraceContext(name, token, tags) + + def newContext(name: String, token: Option[String], tags: Map[String, String], timestamp: RelativeNanoTimestamp, status: Status, isLocal: Boolean): TraceContext = + createTraceContext(name, token, tags, timestamp, status, isLocal) + + private def createTraceContext(traceName: String, token: Option[String], tags: Map[String, String] = Map.empty, startTimestamp: RelativeNanoTimestamp = RelativeNanoTimestamp.now, + status: Status = Status.Open, isLocal: Boolean = true): TraceContext = { + + def newMetricsOnlyContext(token: String): TraceContext = + new MetricsOnlyContext(traceName, token, tags, status, _settings.levelOfDetail, startTimestamp, _logger) + + val traceToken = token.getOrElse(newToken) + + _settings.levelOfDetail match { + case LevelOfDetail.MetricsOnly ⇒ + newMetricsOnlyContext(traceToken) + case _ if !isLocal || !_settings.sampler.shouldTrace ⇒ + newMetricsOnlyContext(traceToken) + case _ ⇒ + new TracingContext(traceName, traceToken, tags, currentStatus = Status.Open, _settings.levelOfDetail, isLocal, startTimestamp, _logger, dispatchTracingContext) + } + } + + def subscribe(subscriber: ActorRef): Unit = + _subscriptions.tell(TraceSubscriptions.Subscribe(subscriber)) + + def unsubscribe(subscriber: ActorRef): Unit = + _subscriptions.tell(TraceSubscriptions.Unsubscribe(subscriber)) + + private[kamon] def dispatchTracingContext(trace: TracingContext): Unit = + if (_settings.sampler.shouldReport(trace.elapsedTime)) + if (trace.shouldIncubate) + _incubator.tell(trace) + else + _subscriptions.tell(trace.generateTraceInfo) + + /** + * Tracer Extension initialization. + */ + private var _system: ActorSystem = null + private var _logger: LoggingAdapter = null + private lazy val _start = { + val subscriptions = _system.actorOf(Props[TraceSubscriptions], "trace-subscriptions") + _subscriptions.point(subscriptions) + _incubator.point(_system.actorOf(Incubator.props(subscriptions))) + } + + def start(system: ActorSystem, newConfig: Config): Unit = synchronized { + _settings = TraceSettings(newConfig) + _system = system + _logger = Logging(_system, "TracerModule") + _start + _system = null + } +} + +private[kamon] object TracerModuleImpl { + + def apply(metricsExtension: MetricsModule, config: Config) = + new TracerModuleImpl(metricsExtension, config) +} + +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)
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