49 lines
1.4 KiB
Scala
49 lines
1.4 KiB
Scala
package controllers
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import io.opentelemetry.OpenTelemetry
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import io.opentelemetry.trace.Tracer
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import javax.inject.Inject
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import play.api.mvc._
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/**
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* This controller creates an `Action` to handle HTTP requests to the
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* application's work page which does busy wait to simulate some work
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*/
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class HomeController @Inject()(cc: ControllerComponents) extends AbstractController(cc) {
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val TRACER: Tracer = OpenTelemetry.getTracerProvider.get("io.opentelemetry.auto")
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/**
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* Create an Action to perform busy wait
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*/
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def doGet(workTimeMS: Option[Long], error: Option[String]) = Action { implicit request: Request[AnyContent] =>
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error match {
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case Some(x) => throw new RuntimeException("some sync error")
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case None => {
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var workTime = workTimeMS.getOrElse(0l)
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scheduleWork(workTime)
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Ok("Did " + workTime + "ms of work.")
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}
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}
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}
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private def scheduleWork(workTimeMS: Long) {
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val span = TRACER.spanBuilder("work").startSpan()
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val scope = TRACER.withSpan(span)
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try {
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if (span != null) {
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span.setAttribute("work-time", workTimeMS)
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span.setAttribute("info", "interesting stuff")
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span.setAttribute("additionalInfo", "interesting stuff")
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}
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if (workTimeMS > 0) {
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Worker.doWork(workTimeMS)
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}
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} finally {
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span.end()
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scope.close()
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}
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}
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}
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