From ebe5d6ebeab65622c6189e3f72bbb9a1328af5b6 Mon Sep 17 00:00:00 2001
From: Magnus Evensberget <magnus.evensberget@nav.no>
Date: Fri, 30 Apr 2021 09:34:07 +0200
Subject: [PATCH] Prometheus

---
 build.gradle.kts                              |  3 +++
 nais-dev.yaml                                 | 20 +++++++++++++-
 .../kotlin/no/nav/fo/veilarbvarsel/main.kt    | 26 ++++++++++++++++---
 3 files changed, 44 insertions(+), 5 deletions(-)

diff --git a/build.gradle.kts b/build.gradle.kts
index c768b80..f0203fc 100644
--- a/build.gradle.kts
+++ b/build.gradle.kts
@@ -32,6 +32,7 @@ repositories {
 }
 
 val ktor_version = "1.5.0"
+val prometheusVersion = "1.6.6"
 val exposed_version = "0.17.13"
 val coroutines_version = "1.4.3"
 
@@ -59,6 +60,8 @@ dependencies {
     // KTor stuff
     implementation("io.ktor:ktor-server-core:$ktor_version")
     implementation("io.ktor:ktor-server-netty:$ktor_version")
+    implementation("io.ktor", "ktor-metrics-micrometer", ktor_version)
+    implementation("io.micrometer", "micrometer-registry-prometheus", prometheusVersion)
 
     // Database stuff
     implementation("org.postgresql:postgresql:$postgresql_version")
diff --git a/nais-dev.yaml b/nais-dev.yaml
index d8b6860..c9633cd 100644
--- a/nais-dev.yaml
+++ b/nais-dev.yaml
@@ -6,4 +6,22 @@ metadata:
   labels:
     team: pto
 spec:
-  image: ghcr.io/navikt/veilarbvarsel/veilarbvarsel:{{version}}
\ No newline at end of file
+  image: ghcr.io/navikt/veilarbvarsel/veilarbvarsel:{{version}}
+  port: 8080
+  prometheus:
+    enabled: true
+    path: /metrics
+  liveness:
+    path: /system/isAlice
+    port: 8080
+    initialDelay: 10
+    timeout: 10
+  readyness:
+    path: /system/isReady
+    port: 8080
+    initialDelay: 10
+    timeout: 10
+  replicas:
+    min: 1
+    max: 2
+    cpuThreasholdPercentage: 50
\ No newline at end of file
diff --git a/src/main/kotlin/no/nav/fo/veilarbvarsel/main.kt b/src/main/kotlin/no/nav/fo/veilarbvarsel/main.kt
index adadc67..e0ff5a3 100644
--- a/src/main/kotlin/no/nav/fo/veilarbvarsel/main.kt
+++ b/src/main/kotlin/no/nav/fo/veilarbvarsel/main.kt
@@ -1,16 +1,19 @@
 package no.nav.fo.veilarbvarsel
 
 import io.ktor.application.*
+import io.ktor.metrics.micrometer.*
+import io.ktor.response.*
 import io.ktor.routing.*
 import io.ktor.server.engine.*
 import io.ktor.server.netty.*
+import io.micrometer.core.instrument.binder.jvm.JvmGcMetrics
+import io.micrometer.core.instrument.binder.jvm.JvmMemoryMetrics
+import io.micrometer.core.instrument.binder.system.ProcessorMetrics
+import io.micrometer.prometheus.PrometheusConfig
+import io.micrometer.prometheus.PrometheusMeterRegistry
 import no.nav.fo.veilarbvarsel.domain.VarselType
-import no.nav.fo.veilarbvarsel.features.BackgroundJob
 import no.nav.fo.veilarbvarsel.kafka.internal.InternalEventProducer
-import no.nav.fo.veilarbvarsel.kafka.internal.KafkaInternalConsumer
 import no.nav.fo.veilarbvarsel.system.systemRouter
-import no.nav.fo.veilarbvarsel.varsel.VarselSender
-import no.nav.fo.veilarbvarsel.varsel.VarselServiceImpl
 import org.slf4j.LoggerFactory
 import java.util.*
 
@@ -23,6 +26,18 @@ fun main() {
 }
 
 fun Application.server() {
+    val appMicrometerRegistry = PrometheusMeterRegistry(PrometheusConfig.DEFAULT)
+
+    install(MicrometerMetrics) {
+        registry = appMicrometerRegistry
+
+        meterBinders = listOf(
+            JvmMemoryMetrics(),
+            JvmGcMetrics(),
+            ProcessorMetrics()
+        )
+    }
+
 /*    DB.connect()
     DB.setupSchemas()
 
@@ -40,6 +55,9 @@ fun Application.server() {
         trace {
             application.log.debug(it.buildText())
         }
+        get("/metrics") {
+            call.respond(appMicrometerRegistry.scrape())
+        }
         systemRouter()
     }