fix: STUD-358 Initial setup for logging instance id

newm-server/src/main/kotlin/io/newm/server/Application.kt

@@ -25,6 +25,7 @@ import io.newm.server.features.user.createUserRoutes
 import io.newm.server.features.walletconnection.createWalletConnectionRoutes
 import io.newm.server.forwarder.installForwarder
 import io.newm.server.health.installHealthCheck
+import io.newm.server.logging.initializeLogging
 import io.newm.server.logging.initializeSentry
 import io.newm.server.logging.installCallLogging
 import io.newm.server.staticcontent.createStaticContentRoutes
@@ -58,11 +59,11 @@ fun main(args: Array<String>) {
 
 @Suppress("unused")
 fun Application.module() {
+    initializeLogging()
     initializeSentry()
     installDependencyInjection()
     initializeDatabase()
     installCurator()
-
     installCallLogging()
     installContentNegotiation()
     installAuthentication()

newm-server/src/main/kotlin/io/newm/server/logging/InitializeLogging.kt

@@ -0,0 +1,16 @@
+package io.newm.server.logging
+
+import io.ktor.server.application.Application
+import io.ktor.server.application.log
+import org.slf4j.MDC
+import software.amazon.awssdk.regions.internal.util.EC2MetadataUtils
+
+fun Application.initializeLogging() {
+    val instanceId = try {
+        EC2MetadataUtils.getInstanceId()
+    } catch (e: Throwable) {
+        log.error("Failed to get instanceId from EC2MetadataUtils", e)
+        "instanceId-unknown"
+    }
+    MDC.put("instanceId", instanceId)
+}

newm-server/src/main/resources/logback.xml

@@ -1,7 +1,7 @@
 <configuration>
     <appender name="STDOUT" class="ch.qos.logback.core.ConsoleAppender">
         <encoder>
-            <pattern>%d{YYYY-MM-dd HH:mm:ss.SSS} [%thread] %-5level %logger{36} - %msg%n</pattern>
+            <pattern>%d{YYYY-MM-dd HH:mm:ss.SSS} [%X{instanceId}][%thread] %-5level %logger{36} - %msg%n</pattern>
         </encoder>
     </appender>
     <appender name="Sentry" class="io.sentry.logback.SentryAppender">