Implement OpenTelemetry in Spring Boot 3 using the Micrometer

spring-boot-modules/pom.xml

@@ -69,6 +69,7 @@
         <module>spring-boot-mvc-birt</module>
         <module>spring-boot-mvc-jersey</module>
         <module>spring-boot-nashorn</module>
+        <module>spring-boot-open-telemetry</module>
         <module>spring-boot-parent</module>
         <module>spring-boot-performance</module>
         <module>spring-boot-pkl</module>

spring-boot-modules/spring-boot-open-telemetry/docker-compose.yml

@@ -0,0 +1,20 @@
+services:
+  product-service:
+    build: spring-boot-open-telemetry1/
+    ports:
+      - "8080:8080"
+    depends_on:
+      - collector
+
+  price-service:
+    build: spring-boot-open-telemetry2/
+    ports:
+      - "8081"
+    depends_on:
+      - collector
+
+  collector:
+    image: jaegertracing/jaeger:2.5.0
+    ports:
+      - "16686:16686"
+      - "4318:4318"

spring-cloud-modules/spring-cloud-open-telemetry/pom.xml → spring-boot-modules/spring-boot-open-telemetry/pom.xml

@@ -2,21 +2,21 @@
     xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
     xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
     <modelVersion>4.0.0</modelVersion>
-    <groupId>com.baeldung.spring.cloud</groupId>
-    <artifactId>spring-cloud-open-telemetry</artifactId>
+    <groupId>com.baeldung.spring.boot</groupId>
+    <artifactId>spring-boot-open-telemetry</artifactId>
     <version>1.0.0-SNAPSHOT</version>
     <packaging>pom</packaging>
-    <name>spring-cloud-open-telemetry</name>
+    <name>spring-boot-open-telemetry</name>
 
     <parent>
-        <groupId>com.baeldung.spring.cloud</groupId>
-        <artifactId>spring-cloud-modules</artifactId>
+        <groupId>com.baeldung.spring-boot-modules</groupId>
+        <artifactId>spring-boot-modules</artifactId>
         <version>1.0.0-SNAPSHOT</version>
     </parent>
 
     <modules>
-        <module>spring-cloud-open-telemetry1</module>
-        <module>spring-cloud-open-telemetry2</module>
+        <module>spring-boot-open-telemetry1</module>
+        <module>spring-boot-open-telemetry2</module>
     </modules>
 
 </project>

spring-boot-modules/spring-boot-open-telemetry/spring-boot-open-telemetry1/Dockerfile

@@ -0,0 +1,7 @@
+FROM openjdk:17-alpine
+
+COPY target/spring-boot-open-telemetry1-1.0.0-SNAPSHOT.jar spring-boot-open-telemetry.jar
+
+EXPOSE 8080
+
+ENTRYPOINT ["java","-jar","/spring-boot-open-telemetry.jar"]

spring-cloud-modules/spring-cloud-open-telemetry/spring-cloud-open-telemetry1/pom.xml → spring-boot-modules/spring-boot-open-telemetry/spring-boot-open-telemetry1/pom.xml

@@ -3,15 +3,14 @@
     xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
     xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
     <modelVersion>4.0.0</modelVersion>
-    <artifactId>spring-cloud-open-telemetry1</artifactId>
-    <groupId>com.baeldung.spring.cloud</groupId>
+    <artifactId>spring-boot-open-telemetry1</artifactId>
     <version>1.0.0-SNAPSHOT</version>
     <packaging>jar</packaging>
-    <name>spring-cloud-open-telemetry1</name>
+    <name>spring-boot-open-telemetry1</name>
 
     <parent>
-        <groupId>com.baeldung.spring.cloud</groupId>
-        <artifactId>spring-cloud-open-telemetry</artifactId>
+        <groupId>com.baeldung.spring.boot</groupId>
+        <artifactId>spring-boot-open-telemetry</artifactId>
         <version>1.0.0-SNAPSHOT</version>
     </parent>
 
@@ -24,20 +23,6 @@
                 <type>pom</type>
                 <scope>import</scope>
             </dependency>
-            <dependency>
-                <groupId>org.springframework.cloud</groupId>
-                <artifactId>spring-cloud-dependencies</artifactId>
-                <version>${release.train.version}</version>
-                <type>pom</type>
-                <scope>import</scope>
-            </dependency>
-            <dependency>
-                <groupId>org.springframework.cloud</groupId>
-                <artifactId>spring-cloud-sleuth-otel-dependencies</artifactId>
-                <version>${spring-cloud-sleuth-otel.version}</version>
-                <scope>import</scope>
-                <type>pom</type>
-            </dependency>
         </dependencies>
     </dependencyManagement>
 
@@ -46,31 +31,37 @@
             <groupId>org.springframework.boot</groupId>
             <artifactId>spring-boot-starter-web</artifactId>
         </dependency>
+
         <dependency>
-            <groupId>org.springframework.cloud</groupId>
-            <artifactId>spring-cloud-starter-sleuth</artifactId>
-            <exclusions>
-                <exclusion>
-                    <groupId>org.springframework.cloud</groupId>
-                    <artifactId>spring-cloud-sleuth-brave</artifactId>
-                </exclusion>
-            </exclusions>
+            <groupId>org.springframework.boot</groupId>
+            <artifactId>spring-boot-starter-actuator</artifactId>
+        </dependency>
+
+        <dependency>
+            <groupId>io.micrometer</groupId>
+            <artifactId>micrometer-tracing</artifactId>
+            <version>${micrometer-tracing-version}</version>
         </dependency>
+
         <dependency>
-            <groupId>org.springframework.cloud</groupId>
-            <artifactId>spring-cloud-sleuth-otel-autoconfigure</artifactId>
+            <groupId>io.micrometer</groupId>
+            <artifactId>micrometer-tracing-bridge-otel</artifactId>
+            <version>${micrometer-tracing-version}</version>
         </dependency>
+
         <dependency>
             <groupId>io.opentelemetry</groupId>
             <artifactId>opentelemetry-exporter-otlp</artifactId>
             <version>${otel-exporter-otlp.version}</version>
         </dependency>
+
         <dependency>
             <groupId>org.junit.jupiter</groupId>
             <artifactId>junit-jupiter-engine</artifactId>
-            <version>${junit-jupiter.version}</version>
+            <version>${junit-jupiter-engine.version}</version>
             <scope>test</scope>
         </dependency>
+
     </dependencies>
 
     <build>
@@ -90,10 +81,11 @@
     </build>
 
     <properties>
-        <spring-boot-dependencies.version>2.7.9</spring-boot-dependencies.version>
-        <release.train.version>2021.0.5</release.train.version>
-        <spring-cloud-sleuth-otel.version>1.1.2</spring-cloud-sleuth-otel.version>
-        <otel-exporter-otlp.version>1.23.1</otel-exporter-otlp.version>
+        <spring-boot-dependencies.version>3.4.4</spring-boot-dependencies.version>
+        <micrometer-tracing-version>1.4.4</micrometer-tracing-version>
+        <otel-exporter-otlp.version>1.39.0</otel-exporter-otlp.version>
+        <logback.version>1.5.16</logback.version>
+        <junit-jupiter-engine.version>5.4.2</junit-jupiter-engine.version>
     </properties>
 
 </project>

spring-cloud-modules/spring-cloud-open-telemetry/spring-cloud-open-telemetry1/src/main/java/com/baeldung/opentelemetry/configuration/RestConfiguration.java → spring-boot-modules/spring-boot-open-telemetry/spring-boot-open-telemetry1/src/main/java/com/baeldung/opentelemetry/configuration/RestTemplateConfig.java

@@ -1,15 +1,15 @@
 package com.baeldung.opentelemetry.configuration;
 
+import org.springframework.boot.web.client.RestTemplateBuilder;
 import org.springframework.context.annotation.Bean;
 import org.springframework.context.annotation.Configuration;
 import org.springframework.web.client.RestTemplate;
 
 @Configuration
-public class RestConfiguration {
+class RestTemplateConfig {
 
     @Bean
-    public RestTemplate restTemplate() {
-        return new RestTemplate();
+    RestTemplate restTemplate(RestTemplateBuilder builder) {
+        return builder.build();
     }
-
-}
+}

spring-cloud-modules/spring-cloud-open-telemetry/spring-cloud-open-telemetry1/src/main/java/com/baeldung/opentelemetry/repository/ProductRepository.java → spring-boot-modules/spring-boot-open-telemetry/spring-boot-open-telemetry1/src/main/java/com/baeldung/opentelemetry/repository/ProductRepository.java

@@ -2,11 +2,11 @@
 
 import com.baeldung.opentelemetry.exception.ProductNotFoundException;
 import com.baeldung.opentelemetry.model.Product;
+import jakarta.annotation.PostConstruct;
 import org.slf4j.Logger;
 import org.slf4j.LoggerFactory;
 import org.springframework.stereotype.Component;
 
-import javax.annotation.PostConstruct;
 import java.util.HashMap;
 import java.util.Map;
 

spring-boot-modules/spring-boot-open-telemetry/spring-boot-open-telemetry1/src/main/resources/application.yml

@@ -0,0 +1,16 @@
+spring:
+  application:
+    name: product-service
+server:
+  port: '8080'
+
+priceClient:
+  baseUrl: http://price-service:8081
+
+management:
+  tracing:
+    sampling:
+      probability: '1.0'
+  otlp:
+    tracing:
+      endpoint: http://collector:4318/v1/traces

spring-cloud-modules/spring-cloud-open-telemetry/spring-cloud-open-telemetry1/src/test/java/com/baeldung/opentelemetry/SpringContextTest.java → spring-boot-modules/spring-boot-open-telemetry/spring-boot-open-telemetry1/src/test/java/com/baeldung/opentelemetry/SpringContextTest.java

@@ -2,14 +2,16 @@
 
 import org.junit.jupiter.api.Test;
 import org.junit.jupiter.api.extension.ExtendWith;
+import org.springframework.beans.factory.annotation.Autowired;
 import org.springframework.boot.test.context.SpringBootTest;
 import org.springframework.test.context.junit.jupiter.SpringExtension;
+import org.springframework.web.client.RestTemplate;
 
 
 @ExtendWith(SpringExtension.class)
 @SpringBootTest(classes = ProductApplication.class)
 class SpringContextTest {
-    
+
     @Test
     void whenSpringContextIsBootstrapped_thenNoExceptions() {
     }

spring-boot-modules/spring-boot-open-telemetry/spring-boot-open-telemetry2/Dockerfile

@@ -0,0 +1,7 @@
+FROM openjdk:17-alpine
+
+COPY target/spring-boot-open-telemetry2-1.0.0-SNAPSHOT.jar spring-boot-open-telemetry.jar
+
+EXPOSE 8081
+
+ENTRYPOINT ["java","-jar","/spring-boot-open-telemetry.jar"]

spring-cloud-modules/spring-cloud-open-telemetry/spring-cloud-open-telemetry2/pom.xml → spring-boot-modules/spring-boot-open-telemetry/spring-boot-open-telemetry2/pom.xml

@@ -1,17 +1,16 @@
 <?xml version="1.0" encoding="UTF-8"?>
 <project xmlns="http://maven.apache.org/POM/4.0.0"
-    xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
-    xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 https://maven.apache.org/xsd/maven-4.0.0.xsd">
+         xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
+         xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
     <modelVersion>4.0.0</modelVersion>
-    <artifactId>spring-cloud-open-telemetry2</artifactId>
-    <groupId>com.baeldung.spring.cloud</groupId>
+    <artifactId>spring-boot-open-telemetry2</artifactId>
     <version>1.0.0-SNAPSHOT</version>
     <packaging>jar</packaging>
-    <name>spring-cloud-open-telemetry2</name>
+    <name>spring-boot-open-telemetry2</name>
 
     <parent>
-        <groupId>com.baeldung.spring.cloud</groupId>
-        <artifactId>spring-cloud-open-telemetry</artifactId>
+        <groupId>com.baeldung.spring.boot</groupId>
+        <artifactId>spring-boot-open-telemetry</artifactId>
         <version>1.0.0-SNAPSHOT</version>
     </parent>
 
@@ -24,20 +23,6 @@
                 <type>pom</type>
                 <scope>import</scope>
             </dependency>
-            <dependency>
-                <groupId>org.springframework.cloud</groupId>
-                <artifactId>spring-cloud-dependencies</artifactId>
-                <version>${release.train.version}</version>
-                <type>pom</type>
-                <scope>import</scope>
-            </dependency>
-            <dependency>
-                <groupId>org.springframework.cloud</groupId>
-                <artifactId>spring-cloud-sleuth-otel-dependencies</artifactId>
-                <version>${spring-cloud-sleuth-otel.version}</version>
-                <scope>import</scope>
-                <type>pom</type>
-            </dependency>
         </dependencies>
     </dependencyManagement>
 
@@ -46,31 +31,37 @@
             <groupId>org.springframework.boot</groupId>
             <artifactId>spring-boot-starter-web</artifactId>
         </dependency>
+
         <dependency>
-            <groupId>org.springframework.cloud</groupId>
-            <artifactId>spring-cloud-starter-sleuth</artifactId>
-            <exclusions>
-                <exclusion>
-                    <groupId>org.springframework.cloud</groupId>
-                    <artifactId>spring-cloud-sleuth-brave</artifactId>
-                </exclusion>
-            </exclusions>
+            <groupId>org.springframework.boot</groupId>
+            <artifactId>spring-boot-starter-actuator</artifactId>
+        </dependency>
+
+        <dependency>
+            <groupId>io.micrometer</groupId>
+            <artifactId>micrometer-tracing</artifactId>
+            <version>${micrometer-tracing-version}</version>
         </dependency>
+
         <dependency>
-            <groupId>org.springframework.cloud</groupId>
-            <artifactId>spring-cloud-sleuth-otel-autoconfigure</artifactId>
+            <groupId>io.micrometer</groupId>
+            <artifactId>micrometer-tracing-bridge-otel</artifactId>
+            <version>${micrometer-tracing-version}</version>
         </dependency>
+
         <dependency>
             <groupId>io.opentelemetry</groupId>
             <artifactId>opentelemetry-exporter-otlp</artifactId>
             <version>${otel-exporter-otlp.version}</version>
         </dependency>
+
         <dependency>
             <groupId>org.junit.jupiter</groupId>
             <artifactId>junit-jupiter-engine</artifactId>
-            <version>${junit-jupiter.version}</version>
+            <version>${junit-jupiter-engine.version}</version>
             <scope>test</scope>
         </dependency>
+
     </dependencies>
 
     <build>
@@ -90,10 +81,11 @@
     </build>
 
     <properties>
-        <spring-boot-dependencies.version>2.7.9</spring-boot-dependencies.version>
-        <release.train.version>2021.0.5</release.train.version>
-        <spring-cloud-sleuth-otel.version>1.1.2</spring-cloud-sleuth-otel.version>
-        <otel-exporter-otlp.version>1.23.1</otel-exporter-otlp.version>
+        <spring-boot-dependencies.version>3.4.4</spring-boot-dependencies.version>
+        <micrometer-tracing-version>1.4.4</micrometer-tracing-version>
+        <otel-exporter-otlp.version>1.39.0</otel-exporter-otlp.version>
+        <logback.version>1.5.16</logback.version>
+        <junit-jupiter-engine.version>5.4.2</junit-jupiter-engine.version>
     </properties>
 
 </project>

spring-cloud-modules/spring-cloud-open-telemetry/spring-cloud-open-telemetry2/src/main/java/com/baeldung/opentelemetry/repository/PriceRepository.java → spring-boot-modules/spring-boot-open-telemetry/spring-boot-open-telemetry2/src/main/java/com/baeldung/opentelemetry/repository/PriceRepository.java

@@ -2,11 +2,11 @@
 
 import com.baeldung.opentelemetry.model.Price;
 import com.baeldung.opentelemetry.exception.PriceNotFoundException;
+import jakarta.annotation.PostConstruct;
 import org.slf4j.Logger;
 import org.slf4j.LoggerFactory;
 import org.springframework.stereotype.Component;
 
-import javax.annotation.PostConstruct;
 import java.util.HashMap;
 import java.util.Map;
 

spring-boot-modules/spring-boot-open-telemetry/spring-boot-open-telemetry2/src/main/resources/application.yml

@@ -0,0 +1,14 @@
+spring:
+  application:
+    name: price-service
+
+server:
+  port: '8081'
+
+management:
+  tracing:
+    sampling:
+      probability: '1.0'
+  otlp:
+    tracing:
+      endpoint: http://collector:4318/v1/traces