Add integration with Zipkin (#75)

* Add integration with Zipkin

* Add Actuator and Zipkin deps

Author: alexheifetz

docker-compose.yml

@@ -0,0 +1,5 @@
+services:
+  zipkin:
+    image: 'openzipkin/zipkin:latest'
+    ports:
+      - "9411:9411"

examples-java/src/main/resources/application-observability.yml

@@ -0,0 +1,23 @@
+# Observability configuration for Spring AI with tracing and logging
+# This is a concern of the application, not the library and will be removed in future versions
+spring:
+  ai:
+    chat:
+      client:
+        observations:
+          log-prompt: false             # Enable ChatClient prompt logging
+      observations:
+        log-prompt: false               # Enable ChatModel prompt logging
+        log-completion: false           # Enable ChatModel response logging
+        include-error-logging: true     # Include error details
+# Observability and tracing configuration
+management:
+  tracing:
+    enabled: true
+    sampling:
+      probability: 1.0                 # Sample 100% of traces (use 0.1 for production)
+
+  # Zipkin configuration
+  zipkin:
+    tracing:
+      endpoint: http://localhost:9411/api/v2/spans

examples-kotlin/src/main/resources/application-observability.yml

@@ -0,0 +1,23 @@
+# Observability configuration for Spring AI with tracing and logging
+# This is a concern of the application, not the library and will be removed in future versions
+spring:
+  ai:
+    chat:
+      client:
+        observations:
+          log-prompt: false             # Enable ChatClient prompt logging
+      observations:
+        log-prompt: false               # Enable ChatModel prompt logging
+        log-completion: false           # Enable ChatModel response logging
+        include-error-logging: true     # Include error details
+# Observability and tracing configuration
+management:
+  tracing:
+    enabled: true
+    sampling:
+      probability: 1.0                 # Sample 100% of traces (use 0.1 for production)
+
+  # Zipkin configuration
+  zipkin:
+    tracing:
+      endpoint: http://localhost:9411/api/v2/spans

pom.xml

@@ -19,6 +19,25 @@
         <module>examples-common</module>
     </modules>
 
+    <dependencies>
+        <!-- ================ Observability ================ -->
+        <dependency>
+            <groupId>org.springframework.boot</groupId>
+            <artifactId>spring-boot-starter-actuator</artifactId>
+        </dependency>
+
+        <dependency>
+            <groupId>io.micrometer</groupId>
+            <artifactId>micrometer-tracing-bridge-brave</artifactId>
+        </dependency>
+
+        <dependency>
+            <groupId>io.zipkin.reporter2</groupId>
+            <artifactId>zipkin-reporter-brave</artifactId>
+        </dependency>
+        <!-- ================ Observability ================ -->
+    </dependencies>
+
     <repositories>
         <repository>
             <id>embabel-releases</id>