프로메테우스 설정 추가

build.gradle.kts

@@ -7,6 +7,7 @@ val h2_version: String by project
 val hikaricp_version: String by project
 val koin_version: String by project
 val jbcrypt_version: String by project
+val prometeus_version: String by project
 
 plugins {
     kotlin("jvm") version "1.9.23"
@@ -37,6 +38,7 @@ dependencies {
     implementation("io.ktor:ktor-server-sessions-jvm")
     implementation("io.ktor:ktor-server-auth-jvm")
     implementation("io.ktor:ktor-server-status-pages-jvm")
+    implementation("io.ktor:ktor-server-metrics-micrometer-jvm")
     implementation("io.ktor:ktor-serialization-kotlinx-json-jvm")
     implementation("ch.qos.logback:logback-classic:$logback_version")
     implementation("org.jetbrains.exposed:exposed-core:$exposed_version")
@@ -47,6 +49,7 @@ dependencies {
     implementation("io.insert-koin:koin-ktor:$koin_version")
     implementation("io.insert-koin:koin-logger-slf4j:$koin_version")
     implementation("org.mindrot:jbcrypt:$jbcrypt_version")
+    implementation("io.micrometer:micrometer-registry-prometheus:$prometeus_version")
     testImplementation("io.ktor:ktor-server-tests-jvm")
     testImplementation("org.jetbrains.kotlin:kotlin-test-junit:$kotlin_version")
 }

gradle.properties

@@ -7,3 +7,4 @@ h2_version=2.1.214
 hikaricp_version=5.1.0
 koin_version=3.5.0
 jbcrypt_version=0.4
+prometeus_version=1.6.3

src/main/kotlin/com/example/Application.kt

@@ -5,6 +5,7 @@ import com.example.config.configureDependencyInjection
 import com.example.config.configureErrorHandling
 import com.example.config.configureHttp
 import com.example.config.configureLogging
+import com.example.config.configureMonitoring
 import com.example.config.configureRouting
 import com.example.config.configureSecurity
 import com.example.config.configureSerialization
@@ -28,4 +29,5 @@ fun Application.module() {
     configureRouting()
     configureErrorHandling()
     configureLogging()
+    configureMonitoring()
 }

src/main/kotlin/com/example/config/Monitoring.kt

@@ -0,0 +1,31 @@
+package com.example.config
+
+import io.ktor.server.application.*
+import io.ktor.server.metrics.micrometer.*
+import io.micrometer.core.instrument.binder.jvm.ClassLoaderMetrics
+import io.micrometer.core.instrument.binder.jvm.JvmGcMetrics
+import io.micrometer.core.instrument.binder.jvm.JvmMemoryMetrics
+import io.micrometer.core.instrument.binder.jvm.JvmThreadMetrics
+import io.micrometer.core.instrument.binder.system.FileDescriptorMetrics
+import io.micrometer.core.instrument.binder.system.ProcessorMetrics
+import io.micrometer.core.instrument.binder.system.UptimeMetrics
+import io.micrometer.prometheus.PrometheusConfig
+import io.micrometer.prometheus.PrometheusMeterRegistry
+
+
+val appMicrometerRegistry = PrometheusMeterRegistry(PrometheusConfig.DEFAULT)
+fun Application.configureMonitoring() {
+    install(MicrometerMetrics) {
+        registry = appMicrometerRegistry
+        meterBinders =
+            listOf(
+                ClassLoaderMetrics(),
+                JvmMemoryMetrics(),
+                JvmGcMetrics(),
+                ProcessorMetrics(),
+                JvmThreadMetrics(),
+                FileDescriptorMetrics(),
+                UptimeMetrics()
+            )
+    }
+}

src/main/kotlin/com/example/config/Routing.kt

@@ -1,6 +1,7 @@
 package com.example.config
 
 import com.example.route.menuRoute
+import com.example.route.monitorRoute
 import com.example.route.orderRoute
 import com.example.route.userRoute
 import io.ktor.server.application.*
@@ -15,6 +16,7 @@ fun Application.configureRouting() {
             orderRoute()
         }
 
+        monitorRoute()
         singlePageApplication {
             react("frontend")
         }

src/main/kotlin/com/example/route/MonitorRoute.kt

@@ -0,0 +1,12 @@
+package com.example.route
+
+import com.example.config.appMicrometerRegistry
+import io.ktor.server.application.*
+import io.ktor.server.response.*
+import io.ktor.server.routing.*
+
+fun Route.monitorRoute() {
+    get("/metrics") {
+        call.respond(appMicrometerRegistry.scrape())
+    }
+}