[FEATURE] Get all metadata of AiService & Tool when the Spring Boot s…

…tarts

langchain4j/langchain4j#2112

langchain4j-spring-boot-starter/src/main/java/dev/langchain4j/service/spring/AiServicesAutoConfig.java

@@ -23,12 +23,10 @@
 import org.springframework.context.annotation.Bean;
 
 import java.lang.reflect.Method;
-import java.util.ArrayList;
 import java.util.Arrays;
 import java.util.Collection;
 import java.util.HashMap;
 import java.util.HashSet;
-import java.util.List;
 import java.util.Map;
 import java.util.Set;
 import java.util.stream.Collectors;

langchain4j-spring-boot-starter/src/test/java/dev/langchain4j/service/spring/mode/automatic/withTools/AiServiceWithToolsApplication.java

@@ -2,14 +2,17 @@
 
 import dev.langchain4j.agent.tool.ToolSpecification;
 import dev.langchain4j.service.spring.event.AiServiceRegisteredEvent;
-import dev.langchain4j.service.spring.event.AiServiceRegisteredEventListener;
+import dev.langchain4j.service.spring.mode.automatic.withTools.listener.AbstractApplicationListener;
 import org.springframework.boot.SpringApplication;
 import org.springframework.boot.autoconfigure.SpringBootApplication;
+import org.springframework.context.ApplicationListener;
+import org.springframework.context.annotation.Import;
 
 import java.util.List;
 
+@Import(AbstractApplicationListener.class)
 @SpringBootApplication
-class AiServiceWithToolsApplication implements AiServiceRegisteredEventListener {
+class AiServiceWithToolsApplication implements ApplicationListener<AiServiceRegisteredEvent> {
 
     public static void main(String[] args) {
         SpringApplication.run(AiServiceWithToolsApplication.class, args);

langchain4j-spring-boot-starter/src/test/java/dev/langchain4j/service/spring/mode/automatic/withTools/AiServicesAutoConfigIT.java

@@ -1,14 +1,22 @@
 package dev.langchain4j.service.spring.mode.automatic.withTools;
 
+import dev.langchain4j.agent.tool.ToolSpecification;
 import dev.langchain4j.service.spring.AiServicesAutoConfig;
+import dev.langchain4j.service.spring.event.AiServiceRegisteredEvent;
+import dev.langchain4j.service.spring.mode.automatic.withTools.listener.AiServiceRegisteredEventListener;
 import org.junit.jupiter.api.Test;
 import org.springframework.boot.autoconfigure.AutoConfigurations;
 import org.springframework.boot.test.context.runner.ApplicationContextRunner;
 
+import java.util.List;
+
 import static dev.langchain4j.service.spring.mode.ApiKeys.OPENAI_API_KEY;
 import static dev.langchain4j.service.spring.mode.automatic.withTools.PackagePrivateTools.CURRENT_TIME;
 import static dev.langchain4j.service.spring.mode.automatic.withTools.PublicTools.CURRENT_DATE;
 import static org.assertj.core.api.Assertions.assertThat;
+import static org.junit.jupiter.api.Assertions.assertEquals;
+import static org.junit.jupiter.api.Assertions.assertNotNull;
+import static org.junit.jupiter.api.Assertions.assertTrue;
 
 class AiServicesAutoConfigIT {
 
@@ -61,6 +69,30 @@ void should_create_AI_service_with_tool_that_is_package_private_method_in_packag
                 });
     }
 
+    @Test
+    void should_receive_ai_service_registered_event() {
+        contextRunner
+                .withUserConfiguration(AiServiceWithToolsApplication.class)
+                .run(context -> {
+
+                    // given
+                    AiServiceRegisteredEventListener listener = context.getBean(AiServiceRegisteredEventListener.class);
+
+                    // then should receive AiServiceRegisteredEvent
+                    assertTrue(listener.isEventReceived());
+                    assertEquals(1, listener.getReceivedEvents().size());
+
+                    AiServiceRegisteredEvent event = listener.getReceivedEvents().stream().findFirst().orElse(null);
+                    assertNotNull(event);
+                    assertEquals(AiServiceWithTools.class, event.getAiServiceClass());
+                    assertEquals(2, event.getToolSpecifications().size());
+
+                    List<String> tools = event.getToolSpecifications().stream().map(ToolSpecification::name).toList();
+                    assertTrue(tools.contains("getCurrentDate"));
+                    assertTrue(tools.contains("getCurrentTime"));
+                });
+    }
+
     // TODO tools which are not @Beans?
     // TODO negative cases
     // TODO no @AiServices in app, just models

langchain4j-spring-boot-starter/src/test/java/dev/langchain4j/service/spring/mode/automatic/withTools/listener/AbstractApplicationListener.java

@@ -0,0 +1,32 @@
+package dev.langchain4j.service.spring.mode.automatic.withTools.listener;
+
+import org.springframework.context.ApplicationEvent;
+import org.springframework.context.ApplicationListener;
+
+import java.util.ArrayList;
+import java.util.List;
+
+public class AbstractApplicationListener<E extends ApplicationEvent> implements ApplicationListener<E> {
+
+    private boolean eventReceived = false;
+    private final List<E> receivedEvents = new ArrayList<>();
+
+    @Override
+    public void onApplicationEvent(E event) {
+        eventReceived = true;
+        receivedEvents.add(event);
+    }
+
+    public List<E> getReceivedEvents() {
+        return receivedEvents;
+    }
+
+    public boolean isEventReceived() {
+        return eventReceived;
+    }
+
+    public void reset() {
+        eventReceived = false;
+        receivedEvents.clear();
+    }
+}

langchain4j-spring-boot-starter/src/test/java/dev/langchain4j/service/spring/mode/automatic/withTools/listener/AiServiceRegisteredEventListener.java

@@ -0,0 +1,7 @@
+package dev.langchain4j.service.spring.mode.automatic.withTools.listener;
+
+import dev.langchain4j.service.spring.event.AiServiceRegisteredEvent;
+import org.springframework.stereotype.Component;
+@Component
+public class AiServiceRegisteredEventListener extends AbstractApplicationListener<AiServiceRegisteredEvent> {
+}