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package kamon
import kamon.context.{Context, Storage}
import kamon.trace.Span
import scala.util.control.NonFatal
trait ContextStorage {
private val _contextStorage = Storage.ThreadLocal()
def currentContext(): Context =
_contextStorage.current()
def currentSpan(): Span =
_contextStorage.current().get(Span.ContextKey)
def storeContext(context: Context): Storage.Scope =
_contextStorage.store(context)
def withContext[T](context: Context)(f: => T): T = {
val scope = _contextStorage.store(context)
try {
f
} finally {
scope.close()
}
}
def withContextKey[T, K](key: Context.Key[K], value: K)(f: => T): T =
withContext(currentContext().withKey(key, value))(f)
def withSpan[T](span: Span)(f: => T): T =
withSpan(span, true)(f)
def withSpan[T](span: Span, finishSpan: Boolean)(f: => T): T = {
try {
withContextKey(Span.ContextKey, span)(f)
} catch {
case NonFatal(t) =>
span.addError(t.getMessage, t)
throw t
} finally {
if(finishSpan)
span.finish()
}
}
}
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