/*
* =========================================================================================
* 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 scala.language.experimental.macros
import java.util.concurrent.atomic.AtomicLong
import kamon.macros.InlineTraceContextMacro
import scala.util.Try
import java.net.InetAddress
import akka.actor.ActorSystem
object TraceRecorder {
private val traceContextStorage = new ThreadLocal[TraceContext] {
override def initialValue(): TraceContext = EmptyTraceContext
}
private val tokenCounter = new AtomicLong
private val hostnamePrefix = Try(InetAddress.getLocalHost.getHostName).getOrElse("unknown-localhost")
def newToken: String = hostnamePrefix + "-" + String.valueOf(tokenCounter.incrementAndGet())
private def newTraceContext(name: String, token: Option[String], system: ActorSystem): TraceContext = {
new DefaultTraceContext(
name, token.getOrElse(newToken),
izOpen = true,
LevelOfDetail.OnlyMetrics,
TraceContextOrigin.Local,
startNanoTime = System.nanoTime)(system)
}
def joinRemoteTraceContext(traceName: String, traceToken: String, startMilliTime: Long, isOpen: Boolean, system: ActorSystem): TraceContext = {
/*new SimpleMetricCollectionContext(
traceName,
traceToken,
Map.empty,
TraceContextOrigin.Remote,
system,
startMilliTime,
isOpen)*/
???
}
def setContext(context: TraceContext): Unit = traceContextStorage.set(context)
def clearContext: Unit = traceContextStorage.set(EmptyTraceContext)
def currentContext: TraceContext = traceContextStorage.get()
// TODO: Remove this method.
def start(name: String, token: Option[String] = None)(implicit system: ActorSystem) = {
//val ctx = newTraceContext(name, token, metadata, system)
//traceContextStorage.set(Some(ctx))
}
def rename(name: String): Unit = currentContext.rename(name)
def withNewTraceContext[T](name: String, token: Option[String] = None)(thunk: ⇒ T)(implicit system: ActorSystem): T =
withTraceContext(newTraceContext(name, token, system))(thunk)
def withTraceContext[T](context: TraceContext)(thunk: ⇒ T): T = {
val oldContext = currentContext
setContext(context)
try thunk finally setContext(oldContext)
}
def withInlineTraceContextReplacement[T](traceCtx: TraceContext)(thunk: ⇒ T): T = macro InlineTraceContextMacro.withInlineTraceContextImpl[T, TraceContext]
def finish(): Unit = currentContext.finish()
}