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/*
* =========================================================================================
* Copyright © 2013-2014 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 akka.instrumentation
import kamon.trace.{ TraceContextAware, TraceRecorder }
import org.aspectj.lang.ProceedingJoinPoint
import org.aspectj.lang.annotation._
@Aspect
class ActorLoggingInstrumentation {
@DeclareMixin("akka.event.Logging.LogEvent+")
def mixinTraceContextAwareToLogEvent: TraceContextAware = TraceContextAware.default
@Pointcut("execution(akka.event.Logging.LogEvent+.new(..)) && this(event)")
def logEventCreation(event: TraceContextAware): Unit = {}
@After("logEventCreation(event)")
def captureTraceContext(event: TraceContextAware): Unit = {
// Force initialization of TraceContextAware
event.traceContext
}
@Pointcut("execution(* akka.event.slf4j.Slf4jLogger.withMdc(..)) && args(logSource, logEvent, logStatement)")
def withMdcInvocation(logSource: String, logEvent: TraceContextAware, logStatement: () ⇒ _): Unit = {}
@Around("withMdcInvocation(logSource, logEvent, logStatement)")
def aroundWithMdcInvocation(pjp: ProceedingJoinPoint, logSource: String, logEvent: TraceContextAware, logStatement: () ⇒ _): Unit = {
TraceRecorder.withTraceContext(logEvent.traceContext) {
pjp.proceed()
}
}
}
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