build.gradle.kts

@@ -47,8 +47,15 @@ dependencies {
     // Logging
     implementation("io.github.oshai:kotlin-logging-jvm:7.0.3")
     implementation("net.logstash.logback:logstash-logback-encoder:8.1")
+    implementation("com.github.loki4j:loki-logback-appender:2.0.0")
     implementation("net.ttddyy.observation:datasource-micrometer-spring-boot:1.1.1")
 
+    // Observability
+    implementation("org.springframework.boot:spring-boot-starter-actuator")
+    implementation("io.micrometer:micrometer-tracing-bridge-otel")
+    implementation("io.opentelemetry:opentelemetry-exporter-otlp")
+    runtimeOnly("io.micrometer:micrometer-registry-prometheus")
+
     // Kotlin
     implementation("org.jetbrains.kotlin:kotlin-reflect")
     implementation("com.fasterxml.jackson.module:jackson-module-kotlin")

src/main/resources/application-local.yaml

@@ -38,3 +38,8 @@ jdbc:
       logger-name: query-logger
     multiline: true
   includes: connection,query,keys,fetch
+
+management:
+  tracing:
+    sampling:
+      probability: 1

src/main/resources/application.yaml

@@ -1,3 +1,6 @@
+server:
+  forward-headers-strategy: framework
+
 spring:
   profiles:
     active: ${ACTIVE_PROFILE:local}

src/main/resources/logback-local.xml

@@ -4,7 +4,7 @@
                     class="roomescape.common.log.RoomescapeLogMaskingConverter"/>
 
     <property name="CONSOLE_LOG_PATTERN"
-              value="%d{yyyy-MM-dd HH:mm:ss.SSS} %highlight(%-5level) %green(${PID:- }) --- [%15.15thread] %cyan(%-40logger{36}) : %maskedMessage%n%throwable"/>
+              value="%d{yyyy-MM-dd HH:mm:ss.SSS} %highlight(%-5level) %green(${PID:- }) --- [%15.15thread] [%magenta(%X{traceId:-},%X{spanId:-})] %cyan(%-40logger{36}) : %maskedMessage%n%throwable"/>
 
     <appender name="CONSOLE" class="ch.qos.logback.core.ConsoleAppender">
         <encoder>