downgrade spring-boot version in order to make it java 11 compatible

kogito-build/kogito-dependencies-bom/pom.xml

@@ -18,7 +18,7 @@
     <!-- this version property is used in plugins but also in dependencies too -->
     <version.io.quarkus>3.5.2</version.io.quarkus>
     <version.io.quarkus.quarkus-test>${version.io.quarkus}</version.io.quarkus.quarkus-test>
-    <version.org.springframework.boot>3.0.5</version.org.springframework.boot>
+    <version.org.springframework.boot>2.6.6</version.org.springframework.boot>
     <version.org.apache.kafka>3.5.1</version.org.apache.kafka>
 
     <!-- dependencies versions -->

springboot/addons/events/decisions/src/main/java/org/kie/kogito/eventdriven/decision/SpringBootEventDrivenDecisionController.java

@@ -18,14 +18,15 @@
  */
 package org.kie.kogito.eventdriven.decision;
 
-import jakarta.annotation.PostConstruct;
 import org.kie.kogito.config.ConfigBean;
 import org.kie.kogito.decision.DecisionModels;
 import org.kie.kogito.event.EventEmitter;
 import org.kie.kogito.event.EventReceiver;
 import org.springframework.beans.factory.annotation.Autowired;
 import org.springframework.stereotype.Component;
 
+import jakarta.annotation.PostConstruct;
+
 @Component
 public class SpringBootEventDrivenDecisionController extends EventDrivenDecisionController {
 

springboot/addons/events/mongodb/src/main/java/org/kie/kogito/events/mongodb/SpringbootMongoDBEventPublisher.java

@@ -18,14 +18,15 @@
  */
 package org.kie.kogito.events.mongodb;
 
-import jakarta.annotation.PostConstruct;
 import org.kie.kogito.mongodb.transaction.AbstractTransactionManager;
 import org.springframework.beans.factory.annotation.Autowired;
 import org.springframework.beans.factory.annotation.Value;
 import org.springframework.stereotype.Component;
 
 import com.mongodb.client.MongoClient;
 
+import jakarta.annotation.PostConstruct;
+
 @Component
 public class SpringbootMongoDBEventPublisher extends MongoDBEventPublisher {
 

springboot/addons/events/predictions/src/main/java/org/kie/kogito/eventdriven/predictions/SpringBootEventDrivenPredictionsController.java

@@ -18,14 +18,15 @@
  */
 package org.kie.kogito.eventdriven.predictions;
 
-import jakarta.annotation.PostConstruct;
 import org.kie.kogito.config.ConfigBean;
 import org.kie.kogito.event.EventEmitter;
 import org.kie.kogito.event.EventReceiver;
 import org.kie.kogito.prediction.PredictionModels;
 import org.springframework.beans.factory.annotation.Autowired;
 import org.springframework.stereotype.Component;
 
+import jakarta.annotation.PostConstruct;
+
 @Component
 public class SpringBootEventDrivenPredictionsController extends EventDrivenPredictionsController {
 

springboot/addons/jobs/src/main/java/org/kie/kogito/jobs/management/springboot/SpringRestJobsService.java

@@ -29,7 +29,6 @@
 import org.springframework.beans.factory.annotation.Value;
 import org.springframework.http.HttpEntity;
 import org.springframework.http.HttpHeaders;
-import org.springframework.http.HttpStatusCode;
 import org.springframework.http.MediaType;
 import org.springframework.http.ResponseEntity;
 import org.springframework.stereotype.Component;
@@ -86,7 +85,7 @@ public String scheduleProcessInstanceJob(ProcessInstanceJobDescription descripti
         ResponseEntity<String> result = restTemplate.postForEntity(getJobsServiceUri(),
                 request,
                 String.class);
-        if (result.getStatusCode().isSameCodeAs(HttpStatusCode.valueOf(200))) {
+        if (result.getStatusCode().ordinal() == 200) {
             LOGGER.debug("Creating of the job {} done with status code {} ", job, result.getStatusCode());
         }
         return job.getId();

springboot/addons/messaging/implementation/src/main/java/org/kie/kogito/addon/cloudevents/spring/SpringBootKogitoExtensionInitializer.java

@@ -18,7 +18,6 @@
  */
 package org.kie.kogito.addon.cloudevents.spring;
 
-import jakarta.annotation.PostConstruct;
 import org.kie.kogito.event.cloudevents.extension.KogitoExtension;
 import org.kie.kogito.event.cloudevents.extension.KogitoPredictionsExtension;
 import org.kie.kogito.event.cloudevents.extension.KogitoProcessExtension;
@@ -32,6 +31,8 @@
 
 import io.cloudevents.jackson.JsonFormat;
 
+import jakarta.annotation.PostConstruct;
+
 /**
  * The goal of this bean is to register the Kogito CloudEvent extension
  * that allows the system to correctly parse Kogito extension attributes.

springboot/addons/messaging/implementation/src/main/java/org/kie/kogito/addon/cloudevents/spring/SpringKafkaCloudEventEmitter.java

@@ -64,6 +64,7 @@ public CompletionStage<Void> emit(DataEvent<?> event) {
                             env.getProperty("kogito.addon.cloudevents.kafka." + KogitoEventStreams.OUTGOING + "." + event.getType(),
                                     defaultTopicName),
                             configBean.useCloudEvents() ? ceMarshaller.marshall(event.asCloudEvent(ceMarshaller.cloudEventDataFactory())) : marshaller.marshall(event.getData()))
+                    .completable()
                     .thenApply(r -> null);
         } catch (IOException e) {
             throw new UncheckedIOException(e);

springboot/addons/messaging/implementation/src/main/java/org/kie/kogito/addon/cloudevents/spring/SpringKafkaCloudEventReceiver.java

@@ -26,7 +26,6 @@
 import java.util.concurrent.ExecutionException;
 import java.util.function.Function;
 
-import jakarta.annotation.PostConstruct;
 import org.kie.kogito.config.ConfigBean;
 import org.kie.kogito.event.CloudEventUnmarshallerFactory;
 import org.kie.kogito.event.DataEvent;
@@ -43,6 +42,8 @@
 import org.springframework.messaging.handler.annotation.Payload;
 import org.springframework.stereotype.Component;
 
+import jakarta.annotation.PostConstruct;
+
 @Component
 public class SpringKafkaCloudEventReceiver implements EventReceiver {
 

springboot/addons/monitoring/core/src/main/java/org/kie/kogito/monitoring/core/springboot/SpringbootMetricsInterceptor.java

@@ -18,8 +18,8 @@
  */
 package org.kie.kogito.monitoring.core.springboot;
 
-import jakarta.servlet.http.HttpServletRequest;
-import jakarta.servlet.http.HttpServletResponse;
+import javax.servlet.http.HttpServletRequest;
+import javax.servlet.http.HttpServletResponse;
 
 import org.kie.kogito.monitoring.core.common.system.interceptor.MetricsInterceptor;
 import org.springframework.lang.Nullable;

springboot/addons/monitoring/core/src/test/java/org/kie/kogito/monitoring/core/springboot/SpringMetricsInterceptorTest.java

@@ -20,8 +20,8 @@
 
 import java.util.List;
 
-import jakarta.servlet.http.HttpServletRequest;
-import jakarta.servlet.http.HttpServletResponse;
+import javax.servlet.http.HttpServletRequest;
+import javax.servlet.http.HttpServletResponse;
 
 import org.junit.jupiter.api.Test;
 import org.kie.kogito.monitoring.core.common.system.interceptor.MetricsInterceptor;