+ core: log a configurable error message when the application was started with the AspectJ Weaver, closes #48

1 files changed, 17 insertions, 0 deletions

diff --git a/kamon-core/src/main/scala/kamon/instrumentation/AspectJWeaverMissingWarning.scala b/kamon-core/src/main/scala/kamon/instrumentation/AspectJWeaverMissingWarning.scala
new file mode 100644
index 00000000..d227404a
--- /dev/null
+++ b/kamon-core/src/main/scala/kamon/instrumentation/AspectJWeaverMissingWarning.scala
@@ -0,0 +1,17 @@
+package kamon.instrumentation
+
+import _root_.akka.event.EventStream
+import org.aspectj.lang.ProceedingJoinPoint
+import org.aspectj.lang.annotation.{Around, Pointcut, Aspect}
+
+@Aspect
+class AspectJWeaverMissingWarning {
+
+  @Pointcut("execution(* kamon.metric.MetricsExtension.printInitializationMessage(..)) && args(eventStream, *)")
+  def printInitializationMessage(eventStream: EventStream): Unit = {}
+
+  @Around("printInitializationMessage(eventStream)")
+  def aroundPrintInitializationMessage(pjp: ProceedingJoinPoint, eventStream: EventStream): Unit = {
+    pjp.proceed(Array[AnyRef](eventStream, Boolean.box(true)))
+  }
+}