From 8d03edf3783f914dd9081bc25be674710582b4cc Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Dominique=20Eifl=C3=A4nder?=
 <dominique.eiflaender@knecon.com>
Date: Wed, 20 Dec 2023 12:22:16 +0100
Subject: [PATCH] RED-1137: Do not observe actuator endpoints

---
 pom.xml                                       |  6 +++++
 .../DefaultTracingAutoConfiguration.java      | 25 +++++++++++++++++--
 2 files changed, 29 insertions(+), 2 deletions(-)

diff --git a/pom.xml b/pom.xml
index 9b9aab9..37f06b5 100644
--- a/pom.xml
+++ b/pom.xml
@@ -44,6 +44,12 @@
             <artifactId>spring-boot-configuration-processor</artifactId>
             <optional>true</optional>
         </dependency>
+        <dependency>
+            <groupId>org.springframework.boot</groupId>
+            <artifactId>spring-boot-starter-web</artifactId>
+            <optional>true</optional>
+            <scope>provided</scope>
+        </dependency>
 
         <!-- Miscellaneous -->
         <dependency>
diff --git a/src/main/java/com/knecon/fforesight/tracing/DefaultTracingAutoConfiguration.java b/src/main/java/com/knecon/fforesight/tracing/DefaultTracingAutoConfiguration.java
index 0be674a..35608b7 100644
--- a/src/main/java/com/knecon/fforesight/tracing/DefaultTracingAutoConfiguration.java
+++ b/src/main/java/com/knecon/fforesight/tracing/DefaultTracingAutoConfiguration.java
@@ -1,17 +1,38 @@
 package com.knecon.fforesight.tracing;
 
+import org.springframework.boot.actuate.autoconfigure.tracing.ConditionalOnEnabledTracing;
+import org.springframework.boot.autoconfigure.AutoConfiguration;
+import org.springframework.context.annotation.Bean;
+import org.springframework.context.annotation.ComponentScan;
+import org.springframework.http.server.observation.ServerRequestObservationContext;
+
+import io.micrometer.observation.ObservationPredicate;
 import jakarta.annotation.PostConstruct;
 import lombok.extern.slf4j.Slf4j;
-import org.springframework.boot.autoconfigure.AutoConfiguration;
-import org.springframework.context.annotation.ComponentScan;
 
 @Slf4j
 @ComponentScan
 @AutoConfiguration
 public class DefaultTracingAutoConfiguration {
+
     @PostConstruct
     public void postConstruct() {
+
         log.info("Tracing AutoConfiguration Loaded!");
     }
 
+
+    @Bean
+    @ConditionalOnEnabledTracing
+    ObservationPredicate actuatorServerContextPredicate() {
+
+        // There might be a better solution soon: https://github.com/spring-projects/spring-boot/issues/34801
+        return (name, context) -> {
+            if (name.equals("http.server.requests") && context instanceof ServerRequestObservationContext serverContext) {
+                return !serverContext.getCarrier().getRequestURI().startsWith("/actuator");
+            }
+            return true;
+        };
+    }
+
 }