Stop DataSource initialization from preventing Hikari instrumentation

Closes gh-12129

spring-boot-project/spring-boot-actuator-autoconfigure/src/main/java/org/springframework/boot/actuate/autoconfigure/metrics/jdbc/HikariDataSourceMetricsPostProcessor.java

@@ -19,9 +19,12 @@ package org.springframework.boot.actuate.autoconfigure.metrics.jdbc;
 import com.zaxxer.hikari.HikariDataSource;
 import com.zaxxer.hikari.metrics.micrometer.MicrometerMetricsTrackerFactory;
 import io.micrometer.core.instrument.MeterRegistry;
+import org.apache.commons.logging.Log;
+import org.apache.commons.logging.LogFactory;
 
 import org.springframework.beans.factory.config.BeanPostProcessor;
 import org.springframework.context.ApplicationContext;
+import org.springframework.core.Ordered;
 
 /**
  * {@link BeanPostProcessor} that configures Hikari metrics. Such arrangement is necessary
@@ -30,7 +33,10 @@ import org.springframework.context.ApplicationContext;
  *
  * @author Stephane Nicoll
  */
-class HikariDataSourceMetricsPostProcessor implements BeanPostProcessor {
+class HikariDataSourceMetricsPostProcessor implements BeanPostProcessor, Ordered {
+
+	private static final Log logger = LogFactory
+			.getLog(HikariDataSourceMetricsPostProcessor.class);
 
 	private final ApplicationContext context;
 
@@ -53,9 +59,14 @@ class HikariDataSourceMetricsPostProcessor implements BeanPostProcessor {
 			HikariDataSource dataSource) {
 		if (dataSource.getMetricRegistry() == null
 				&& dataSource.getMetricsTrackerFactory() == null) {
+			try {
 				dataSource.setMetricsTrackerFactory(
 						new MicrometerMetricsTrackerFactory(registry));
 			}
+			catch (Exception ex) {
+				logger.warn("Failed to bind Hikari metrics: " + ex.getMessage());
+			}
+		}
 	}
 
 	private MeterRegistry getMeterRegistry() {
@@ -65,4 +76,9 @@ class HikariDataSourceMetricsPostProcessor implements BeanPostProcessor {
 		return this.meterRegistry;
 	}
 
+	@Override
+	public int getOrder() {
+		return Ordered.HIGHEST_PRECEDENCE;
+	}
+
 }

spring-boot-project/spring-boot-actuator-autoconfigure/src/test/java/org/springframework/boot/actuate/autoconfigure/metrics/jdbc/DataSourcePoolMetricsAutoConfigurationTests.java

@@ -16,6 +16,7 @@
 
 package org.springframework.boot.actuate.autoconfigure.metrics.jdbc;
 
+import java.sql.SQLException;
 import java.util.UUID;
 
 import javax.sql.DataSource;
@@ -26,6 +27,8 @@ import io.micrometer.core.instrument.Tag;
 import io.micrometer.core.instrument.simple.SimpleMeterRegistry;
 import org.junit.Test;
 
+import org.springframework.beans.BeansException;
+import org.springframework.beans.factory.config.BeanPostProcessor;
 import org.springframework.boot.actuate.autoconfigure.metrics.test.MetricsRun;
 import org.springframework.boot.autoconfigure.AutoConfigurations;
 import org.springframework.boot.autoconfigure.jdbc.DataSourceAutoConfiguration;
@@ -33,6 +36,8 @@ import org.springframework.boot.jdbc.DataSourceBuilder;
 import org.springframework.boot.test.context.runner.ApplicationContextRunner;
 import org.springframework.context.annotation.Bean;
 import org.springframework.context.annotation.Configuration;
+import org.springframework.core.Ordered;
+import org.springframework.core.PriorityOrdered;
 
 import static org.assertj.core.api.Assertions.assertThat;
 
@@ -96,6 +101,29 @@ public class DataSourcePoolMetricsAutoConfigurationTests {
 		});
 	}
 
+	@Test
+	public void autoConfiguredHikariDataSourceIsInstrumentedWhenUsingDataSourceInitialization() {
+		this.contextRunner
+				.withPropertyValues(
+						"spring.datasource.schema:db/create-custom-schema.sql")
+				.run((context) -> {
+					context.getBean(DataSource.class).getConnection();
+					MeterRegistry registry = context.getBean(MeterRegistry.class);
+					registry.get("hikaricp.connections").meter();
+				});
+	}
+
+	@Test
+	public void failureToInstrumentHikariDataSourceIsTolerated() {
+		this.contextRunner.withUserConfiguration(HikariSealingConfiguration.class)
+				.run((context) -> {
+					assertThat(context).hasNotFailed();
+					context.getBean(DataSource.class).getConnection();
+					MeterRegistry registry = context.getBean(MeterRegistry.class);
+					assertThat(registry.find("hikaricp.connections").meter()).isNull();
+				});
+	}
+
 	@Test
 	public void hikariDataSourceInstrumentationCanBeDisabled() {
 		this.contextRunner.withPropertyValues("management.metrics.enable.hikaricp=false")
@@ -215,4 +243,37 @@ public class DataSourcePoolMetricsAutoConfigurationTests {
 
 	}
 
+	@Configuration
+	static class HikariSealingConfiguration {
+
+		@Bean
+		public static HikariSealer hikariSealer() {
+			return new HikariSealer();
+		}
+
+		static class HikariSealer implements BeanPostProcessor, PriorityOrdered {
+
+			@Override
+			public int getOrder() {
+				return Ordered.HIGHEST_PRECEDENCE;
+			}
+
+			@Override
+			public Object postProcessAfterInitialization(Object bean, String beanName)
+					throws BeansException {
+				if (bean instanceof HikariDataSource) {
+					try {
+						((HikariDataSource) bean).getConnection().close();
+					}
+					catch (SQLException ex) {
+						throw new IllegalStateException(ex);
+					}
+				}
+				return bean;
+			}
+
+		}
+
+	}
+
 }

spring-boot-project/spring-boot-autoconfigure/src/main/java/org/springframework/boot/autoconfigure/jdbc/DataSourceInitializerPostProcessor.java

@@ -33,11 +33,9 @@ import org.springframework.core.Ordered;
  */
 class DataSourceInitializerPostProcessor implements BeanPostProcessor, Ordered {
 
-	private int order = Ordered.HIGHEST_PRECEDENCE;
-
 	@Override
 	public int getOrder() {
-		return this.order;
+		return Ordered.HIGHEST_PRECEDENCE + 1;
 	}
 
 	@Autowired