src/main/kotlin/net/pterodactylus/sone/web/pages/MetricsPage.kt

   1 package net.pterodactylus.sone.web.pages
   2
   3 import com.codahale.metrics.*
   4 import net.pterodactylus.sone.main.*
   5 import net.pterodactylus.sone.web.*
   6 import net.pterodactylus.sone.web.page.*
   7 import net.pterodactylus.util.template.*
   8 import javax.inject.*
   9
  10 @MenuName("Metrics")
  11 @TemplatePath("/templates/metrics.html")
  12 @ToadletPath("metrics.html")
  13 class MetricsPage @Inject constructor(webInterface: WebInterface, loaders: Loaders, templateRenderer: TemplateRenderer, private val metricsRegistry: MetricRegistry) : SoneTemplatePage(webInterface, loaders, templateRenderer, "Page.Metrics.Title") {
  14
  15         override fun handleRequest(soneRequest: SoneRequest, templateContext: TemplateContext) {
  16                 addHistogram(templateContext, "sone.parsing.duration", "soneParsingDuration")
  17                 addHistogram(templateContext, "sone.insert.duration", "soneInsertDuration")
  18         }
  19
  20         private fun addHistogram(templateContext: TemplateContext, metricName: String, variablePrefix: String) {
  21                 metricsRegistry.histogram(metricName).also { histogram ->
  22                         templateContext["${variablePrefix}Count"] = histogram.count
  23                         histogram.snapshot.also { snapshot ->
  24                                 templateContext["${variablePrefix}Min"] = snapshot.min
  25                                 templateContext["${variablePrefix}Max"] = snapshot.max
  26                                 templateContext["${variablePrefix}Median"] = snapshot.median
  27                                 templateContext["${variablePrefix}Mean"] = snapshot.mean
  28                                 templateContext["${variablePrefix}Percentile75"] = snapshot.get75thPercentile()
  29                                 templateContext["${variablePrefix}Percentile95"] = snapshot.get95thPercentile()
  30                                 templateContext["${variablePrefix}Percentile98"] = snapshot.get98thPercentile()
  31                                 templateContext["${variablePrefix}Percentile99"] = snapshot.get99thPercentile()
  32                                 templateContext["${variablePrefix}Percentile999"] = snapshot.get999thPercentile()
  33                         }
  34                 }
  35         }
  36
  37 }