update apiLatencySummary label keys (take out argument) (#49)

Author: schowsf

acdc-ws/app/services/Metric.scala

@@ -70,7 +70,7 @@ class PrometheusMetric @Inject() (implicit ec: ExecutionContext) extends Metric
   private val apiLatency: Summary = Summary
     .build()
     .name("apiLatencySummary")
-    .labelNames("path", "arguments", "method")
+    .labelNames("path", "method")
     .help("Profile API response time summary")
     .quantile(0.5d, 0.001d)
     .quantile(0.95d, 0.001d)

acdc-ws/app/utils/MetricFilter.scala

@@ -21,14 +21,13 @@ class MetricFilter @Inject() (
     nextFilter: RequestHeader => Future[Result]
   )(requestHeader: RequestHeader): Future[Result] = {
     metric.parseRequest(requestHeader) match {
-      case Some((staticPath, argument)) =>
+      case Some((staticPath, _)) =>
         // simplify path to control prometheus summary metric label cardinality
         val simplePath = staticPath match {
           case patt(prefix) => prefix
           case _ => ""
         }
-        // hardcode argument to "" so as to control the number of time series
-        val stopTimerCallback = metric.startApiTimer(simplePath, "", requestHeader.method)
+        val stopTimerCallback = metric.startApiTimer(simplePath, requestHeader.method)
 
         nextFilter(requestHeader)
           .transform(

version.sbt

@@ -1 +1 @@
- ThisBuild / version := "0.8.9"
+ ThisBuild / version := "0.8.10"