Move R2DBC health and observation to spring-boot-r2dbc

Author: wilkinsona

spring-boot-project/spring-boot-actuator-autoconfigure-all/build.gradle

@@ -41,7 +41,6 @@ dependencies {
 	optional(project(":spring-boot-project:spring-boot-metrics"))
 	optional(project(":spring-boot-project:spring-boot-micrometer-observation"))
 	optional(project(":spring-boot-project:spring-boot-opentelemetry"))
-	optional(project(":spring-boot-project:spring-boot-r2dbc"))
 	optional(project(":spring-boot-project:spring-boot-restclient"))
 	optional(project(":spring-boot-project:spring-boot-security-oauth2-client"))
 	optional(project(":spring-boot-project:spring-boot-security-oauth2-resource-server"))
@@ -71,9 +70,6 @@ dependencies {
 	optional("io.opentelemetry:opentelemetry-exporter-otlp")
 	optional("io.projectreactor.netty:reactor-netty-http")
 	optional("io.prometheus:prometheus-metrics-tracer-common")
-	optional("io.r2dbc:r2dbc-pool")
-	optional("io.r2dbc:r2dbc-proxy")
-	optional("io.r2dbc:r2dbc-spi")
 	optional("jakarta.persistence:jakarta.persistence-api")
 	optional("jakarta.servlet:jakarta.servlet-api")
 	optional("org.apache.activemq:activemq-broker")
@@ -119,7 +115,6 @@ dependencies {
 	testImplementation("io.opentelemetry:opentelemetry-exporter-common")
 	testImplementation("io.projectreactor:reactor-test")
 	testImplementation("io.prometheus:prometheus-metrics-exposition-formats")
-	testImplementation("io.r2dbc:r2dbc-h2")
 	testImplementation("com.squareup.okhttp3:mockwebserver")
 	testImplementation("jakarta.xml.bind:jakarta.xml.bind-api")
 	testImplementation("org.apache.activemq:artemis-jakarta-client")

spring-boot-project/spring-boot-actuator-autoconfigure-all/src/main/resources/META-INF/spring/org.springframework.boot.autoconfigure.AutoConfiguration.imports

@@ -18,8 +18,6 @@ org.springframework.boot.actuate.autoconfigure.metrics.task.TaskExecutorMetricsA
 org.springframework.boot.actuate.autoconfigure.observability.ObservabilityAutoConfiguration
 org.springframework.boot.actuate.autoconfigure.observation.web.reactive.WebFluxObservationAutoConfiguration
 org.springframework.boot.actuate.autoconfigure.observation.web.servlet.WebMvcObservationAutoConfiguration
-org.springframework.boot.actuate.autoconfigure.r2dbc.ConnectionFactoryHealthContributorAutoConfiguration
-org.springframework.boot.actuate.autoconfigure.r2dbc.R2dbcObservationAutoConfiguration
 org.springframework.boot.actuate.autoconfigure.sbom.SbomEndpointAutoConfiguration
 org.springframework.boot.actuate.autoconfigure.scheduling.ScheduledTasksEndpointAutoConfiguration
 org.springframework.boot.actuate.autoconfigure.scheduling.ScheduledTasksObservabilityAutoConfiguration

spring-boot-project/spring-boot-r2dbc/build.gradle

@@ -19,10 +19,11 @@ dependencies {
 
 	compileOnly("com.fasterxml.jackson.core:jackson-annotations")
 
-	optional(project(":spring-boot-project:spring-boot-actuator"))
+	optional(project(":spring-boot-project:spring-boot-actuator-autoconfigure"))
 	optional(project(":spring-boot-project:spring-boot-autoconfigure"))
 	optional(project(":spring-boot-project:spring-boot-docker-compose"))
 	optional(project(":spring-boot-project:spring-boot-metrics"))
+	optional(project(":spring-boot-project:spring-boot-micrometer-observation"))
 	optional(project(":spring-boot-project:spring-boot-testcontainers"))
 	optional("io.micrometer:micrometer-core")
 	optional("io.r2dbc:r2dbc-pool")

spring-boot-project/spring-boot-actuator-autoconfigure-all/src/main/java/org/springframework/boot/actuate/autoconfigure/r2dbc/ConnectionFactoryHealthContributorAutoConfiguration.java renamed to spring-boot-project/spring-boot-r2dbc/src/main/java/org/springframework/boot/r2dbc/actuate/health/autoconfigure/ConnectionFactoryHealthContributorAutoConfiguration.java

@@ -14,7 +14,7 @@
  * limitations under the License.
  */
 
-package org.springframework.boot.actuate.autoconfigure.r2dbc;
+package org.springframework.boot.r2dbc.actuate.health.autoconfigure;
 
 import io.r2dbc.spi.ConnectionFactory;
 
@@ -36,10 +36,10 @@
  * {@link ConnectionFactoryHealthIndicator}.
  *
  * @author Mark Paluch
- * @since 2.3.0
+ * @since 4.0.0
  */
 @AutoConfiguration(after = R2dbcAutoConfiguration.class)
-@ConditionalOnClass({ ConnectionFactory.class, ConnectionFactoryHealthIndicator.class })
+@ConditionalOnClass({ ConnectionFactory.class, ConditionalOnEnabledHealthIndicator.class })
 @ConditionalOnBean(ConnectionFactory.class)
 @ConditionalOnEnabledHealthIndicator("r2dbc")
 public class ConnectionFactoryHealthContributorAutoConfiguration
@@ -51,7 +51,7 @@ public class ConnectionFactoryHealthContributorAutoConfiguration
 
 	@Bean
 	@ConditionalOnMissingBean(name = { "r2dbcHealthIndicator", "r2dbcHealthContributor" })
-	public ReactiveHealthContributor r2dbcHealthContributor(ConfigurableListableBeanFactory beanFactory) {
+	ReactiveHealthContributor r2dbcHealthContributor(ConfigurableListableBeanFactory beanFactory) {
 		return createContributor(beanFactory, ConnectionFactory.class);
 	}
 

spring-boot-project/spring-boot-r2dbc/src/main/java/org/springframework/boot/r2dbc/actuate/health/autoconfigure/package-info.java

@@ -0,0 +1,20 @@
+/*
+ * Copyright 2012-2025 the original author or authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      https://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+/**
+ * Auto-configuration for R2DBC health integration.
+ */
+package org.springframework.boot.r2dbc.actuate.health.autoconfigure;

spring-boot-project/spring-boot-actuator-autoconfigure-all/src/main/java/org/springframework/boot/actuate/autoconfigure/r2dbc/R2dbcObservationAutoConfiguration.java renamed to spring-boot-project/spring-boot-r2dbc/src/main/java/org/springframework/boot/r2dbc/autoconfigure/observation/R2dbcObservationAutoConfiguration.java

@@ -14,7 +14,7 @@
  * limitations under the License.
  */
 
-package org.springframework.boot.actuate.autoconfigure.r2dbc;
+package org.springframework.boot.r2dbc.autoconfigure.observation;
 
 import io.micrometer.observation.ObservationRegistry;
 import io.r2dbc.proxy.ProxyConnectionFactory;
@@ -30,7 +30,6 @@
 import org.springframework.boot.autoconfigure.condition.ConditionalOnBean;
 import org.springframework.boot.autoconfigure.condition.ConditionalOnClass;
 import org.springframework.boot.context.properties.EnableConfigurationProperties;
-import org.springframework.boot.micrometer.observation.autoconfigure.ObservationAutoConfiguration;
 import org.springframework.boot.r2dbc.OptionsCapableConnectionFactory;
 import org.springframework.boot.r2dbc.autoconfigure.ProxyConnectionFactoryCustomizer;
 import org.springframework.context.annotation.Bean;
@@ -41,16 +40,17 @@
  *
  * @author Moritz Halbritter
  * @author Tadaya Tsuyukubo
- * @since 3.2.0
+ * @since 4.0.0
  */
-@AutoConfiguration(after = ObservationAutoConfiguration.class)
-@ConditionalOnClass({ ConnectionFactory.class, ProxyConnectionFactory.class })
+@AutoConfiguration(
+		afterName = "org.springframework.boot.micrometer.observation.autoconfigure.ObservationAutoConfiguration")
+@ConditionalOnClass({ ConnectionFactory.class, ProxyConnectionFactory.class, ObservationRegistry.class })
+@ConditionalOnBean(ObservationRegistry.class)
 @EnableConfigurationProperties(R2dbcObservationProperties.class)
 public class R2dbcObservationAutoConfiguration {
 
 	/**
 	 * {@code @Order} value of the observation customizer.
-	 * @since 3.4.0
 	 */
 	public static final int R2DBC_PROXY_OBSERVATION_CUSTOMIZER_ORDER = 0;
 

spring-boot-project/spring-boot-actuator-autoconfigure-all/src/main/java/org/springframework/boot/actuate/autoconfigure/r2dbc/R2dbcObservationProperties.java renamed to spring-boot-project/spring-boot-r2dbc/src/main/java/org/springframework/boot/r2dbc/autoconfigure/observation/R2dbcObservationProperties.java

@@ -14,7 +14,7 @@
  * limitations under the License.
  */
 
-package org.springframework.boot.actuate.autoconfigure.r2dbc;
+package org.springframework.boot.r2dbc.autoconfigure.observation;
 
 import org.springframework.boot.context.properties.ConfigurationProperties;
 

spring-boot-project/spring-boot-actuator-autoconfigure-all/src/main/java/org/springframework/boot/actuate/autoconfigure/r2dbc/package-info.java renamed to spring-boot-project/spring-boot-r2dbc/src/main/java/org/springframework/boot/r2dbc/autoconfigure/observation/package-info.java

@@ -15,6 +15,6 @@
  */
 
 /**
- * Auto-configuration for actuator R2DBC.
+ * Auto-configuration for R2DBC observation.
  */
-package org.springframework.boot.actuate.autoconfigure.r2dbc;
+package org.springframework.boot.r2dbc.autoconfigure.observation;

spring-boot-project/spring-boot-r2dbc/src/main/resources/META-INF/spring/org.springframework.boot.autoconfigure.AutoConfiguration.imports

@@ -1,5 +1,7 @@
-org.springframework.boot.r2dbc.metrics.autoconfigure.ConnectionPoolMetricsAutoConfiguration
+org.springframework.boot.r2dbc.actuate.health.autoconfigure.ConnectionFactoryHealthContributorAutoConfiguration
 org.springframework.boot.r2dbc.autoconfigure.R2dbcAutoConfiguration
 org.springframework.boot.r2dbc.autoconfigure.R2dbcInitializationAutoConfiguration
 org.springframework.boot.r2dbc.autoconfigure.R2dbcProxyAutoConfiguration
 org.springframework.boot.r2dbc.autoconfigure.R2dbcTransactionManagerAutoConfiguration
+org.springframework.boot.r2dbc.autoconfigure.observation.R2dbcObservationAutoConfiguration
+org.springframework.boot.r2dbc.metrics.autoconfigure.ConnectionPoolMetricsAutoConfiguration

spring-boot-project/spring-boot-actuator-autoconfigure-all/src/test/java/org/springframework/boot/actuate/autoconfigure/r2dbc/ConnectionFactoryHealthContributorAutoConfigurationTests.java renamed to spring-boot-project/spring-boot-r2dbc/src/test/java/org/springframework/boot/r2dbc/actuate/health/autoconfigure/ConnectionFactoryHealthContributorAutoConfigurationTests.java

@@ -14,7 +14,7 @@
  * limitations under the License.
  */
 
-package org.springframework.boot.actuate.autoconfigure.r2dbc;
+package org.springframework.boot.r2dbc.actuate.health.autoconfigure;
 
 import org.junit.jupiter.api.Test;
 

spring-boot-project/spring-boot-actuator-autoconfigure-all/src/test/java/org/springframework/boot/actuate/autoconfigure/r2dbc/R2dbcObservationAutoConfigurationTests.java renamed to spring-boot-project/spring-boot-r2dbc/src/test/java/org/springframework/boot/r2dbc/autoconfigure/observation/R2dbcObservationAutoConfigurationTests.java

@@ -14,7 +14,7 @@
  * limitations under the License.
  */
 
-package org.springframework.boot.actuate.autoconfigure.r2dbc;
+package org.springframework.boot.r2dbc.autoconfigure.observation;
 
 import java.util.UUID;
 import java.util.concurrent.atomic.AtomicReference;
@@ -28,9 +28,7 @@
 import org.junit.jupiter.api.Test;
 import reactor.core.publisher.Mono;
 
-import org.springframework.boot.autoconfigure.AutoConfiguration;
 import org.springframework.boot.autoconfigure.AutoConfigurations;
-import org.springframework.boot.context.annotation.ImportCandidates;
 import org.springframework.boot.r2dbc.ConnectionFactoryBuilder;
 import org.springframework.boot.r2dbc.ConnectionFactoryDecorator;
 import org.springframework.boot.r2dbc.autoconfigure.ProxyConnectionFactoryCustomizer;
@@ -55,12 +53,6 @@ class R2dbcObservationAutoConfigurationTests {
 	private final ApplicationContextRunner runner = this.runnerWithoutObservationRegistry
 		.withBean(ObservationRegistry.class, ObservationRegistry::create);
 
-	@Test
-	void shouldBeRegisteredInAutoConfigurationImports() {
-		assertThat(ImportCandidates.load(AutoConfiguration.class, null).getCandidates())
-			.contains(R2dbcObservationAutoConfiguration.class.getName());
-	}
-
 	@Test
 	void shouldNotSupplyBeansIfObservationRegistryIsNotPresent() {
 		this.runnerWithoutObservationRegistry