Add SslInfoContributor and SslHealthIndicator

spring-boot-project/spring-boot-actuator-autoconfigure/src/main/java/org/springframework/boot/actuate/autoconfigure/info/InfoContributorAutoConfiguration.java

@@ -16,13 +16,15 @@
 
 package org.springframework.boot.actuate.autoconfigure.info;
 
+import org.springframework.boot.actuate.autoconfigure.ssl.SslHealthIndicatorProperties;
 import org.springframework.boot.actuate.info.BuildInfoContributor;
 import org.springframework.boot.actuate.info.EnvironmentInfoContributor;
 import org.springframework.boot.actuate.info.GitInfoContributor;
 import org.springframework.boot.actuate.info.InfoContributor;
 import org.springframework.boot.actuate.info.JavaInfoContributor;
 import org.springframework.boot.actuate.info.OsInfoContributor;
 import org.springframework.boot.actuate.info.ProcessInfoContributor;
+import org.springframework.boot.actuate.info.SslInfoContributor;
 import org.springframework.boot.autoconfigure.AutoConfiguration;
 import org.springframework.boot.autoconfigure.EnableAutoConfiguration;
 import org.springframework.boot.autoconfigure.condition.ConditionalOnMissingBean;
@@ -31,6 +33,8 @@
 import org.springframework.boot.context.properties.EnableConfigurationProperties;
 import org.springframework.boot.info.BuildProperties;
 import org.springframework.boot.info.GitProperties;
+import org.springframework.boot.info.SslInfo;
+import org.springframework.boot.ssl.SslBundles;
 import org.springframework.context.annotation.Bean;
 import org.springframework.core.Ordered;
 import org.springframework.core.annotation.Order;
@@ -46,7 +50,7 @@
  * @since 2.0.0
  */
 @AutoConfiguration(after = ProjectInfoAutoConfiguration.class)
-@EnableConfigurationProperties(InfoContributorProperties.class)
+@EnableConfigurationProperties({ InfoContributorProperties.class, SslHealthIndicatorProperties.class })
 public class InfoContributorAutoConfiguration {
 
 	/**
@@ -100,4 +104,18 @@ public ProcessInfoContributor processInfoContributor() {
 		return new ProcessInfoContributor();
 	}
 
+	@Bean
+	@ConditionalOnEnabledInfoContributor(value = "ssl", fallback = InfoContributorFallback.DISABLE)
+	@Order(DEFAULT_ORDER)
+	public SslInfoContributor sslInfoContributor(SslInfo sslInfo) {
+		return new SslInfoContributor(sslInfo);
+	}
+
+	@Bean
+	@ConditionalOnMissingBean
+	@ConditionalOnEnabledInfoContributor(value = "ssl", fallback = InfoContributorFallback.DISABLE)
+	public SslInfo sslInfo(SslBundles sslBundles, SslHealthIndicatorProperties sslHealthIndicatorProperties) {
+		return new SslInfo(sslBundles, sslHealthIndicatorProperties.getCertificateValidityWarningThreshold());
+	}
+
 }

spring-boot-project/spring-boot-actuator-autoconfigure/src/main/java/org/springframework/boot/actuate/autoconfigure/ssl/SslHealthContributorAutoConfiguration.java

@@ -0,0 +1,53 @@
+/*
+ * Copyright 2012-2024 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.
+ */
+
+package org.springframework.boot.actuate.autoconfigure.ssl;
+
+import org.springframework.boot.actuate.autoconfigure.health.ConditionalOnEnabledHealthIndicator;
+import org.springframework.boot.actuate.autoconfigure.health.HealthContributorAutoConfiguration;
+import org.springframework.boot.actuate.ssl.SslHealthIndicator;
+import org.springframework.boot.autoconfigure.AutoConfiguration;
+import org.springframework.boot.autoconfigure.EnableAutoConfiguration;
+import org.springframework.boot.autoconfigure.condition.ConditionalOnMissingBean;
+import org.springframework.boot.context.properties.EnableConfigurationProperties;
+import org.springframework.boot.info.SslInfo;
+import org.springframework.boot.ssl.SslBundles;
+import org.springframework.context.annotation.Bean;
+
+/**
+ * {@link EnableAutoConfiguration Auto-configuration} for {@link SslHealthIndicator}.
+ *
+ * @author Jonatan Ivanov
+ * @since 3.4.0
+ */
+@AutoConfiguration(before = HealthContributorAutoConfiguration.class)
+@ConditionalOnEnabledHealthIndicator("ssl")
+@EnableConfigurationProperties(SslHealthIndicatorProperties.class)
+public class SslHealthContributorAutoConfiguration {
+
+	@Bean
+	@ConditionalOnMissingBean(name = "sslHealthIndicator")
+	public SslHealthIndicator sslHealthIndicator(SslInfo sslInfo) {
+		return new SslHealthIndicator(sslInfo);
+	}
+
+	@Bean
+	@ConditionalOnMissingBean
+	public SslInfo sslInfo(SslBundles sslBundles, SslHealthIndicatorProperties sslHealthIndicatorProperties) {
+		return new SslInfo(sslBundles, sslHealthIndicatorProperties.getCertificateValidityWarningThreshold());
+	}
+
+}

spring-boot-project/spring-boot-actuator-autoconfigure/src/main/java/org/springframework/boot/actuate/autoconfigure/ssl/SslHealthIndicatorProperties.java

@@ -0,0 +1,47 @@
+/*
+ * Copyright 2012-2024 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.
+ */
+
+package org.springframework.boot.actuate.autoconfigure.ssl;
+
+import java.time.Duration;
+
+import org.springframework.boot.actuate.ssl.SslHealthIndicator;
+import org.springframework.boot.context.properties.ConfigurationProperties;
+
+/**
+ * External configuration properties for {@link SslHealthIndicator}.
+ *
+ * @author Jonatan Ivanov
+ * @since 3.4.0
+ */
+@ConfigurationProperties(prefix = "management.health.ssl")
+public class SslHealthIndicatorProperties {
+
+	/**
+	 * If an SSL Certificate will be invalid within the time span defined by this
+	 * threshold, it should trigger a warning.
+	 */
+	private Duration certificateValidityWarningThreshold = Duration.ofDays(14);
+
+	public Duration getCertificateValidityWarningThreshold() {
+		return this.certificateValidityWarningThreshold;
+	}
+
+	public void setCertificateValidityWarningThreshold(Duration certificateValidityWarningThreshold) {
+		this.certificateValidityWarningThreshold = certificateValidityWarningThreshold;
+	}
+
+}

spring-boot-project/spring-boot-actuator-autoconfigure/src/main/java/org/springframework/boot/actuate/autoconfigure/ssl/package-info.java

@@ -0,0 +1,20 @@
+/*
+ * Copyright 2012-2024 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 actuator ssl concerns.
+ */
+package org.springframework.boot.actuate.autoconfigure.ssl;

spring-boot-project/spring-boot-actuator-autoconfigure/src/main/resources/META-INF/additional-spring-configuration-metadata.json

@@ -227,6 +227,18 @@
       "description": "Whether to enable Redis health check.",
       "defaultValue": true
     },
+    {
+      "name": "management.health.ssl.certificate-validity-warning-threshold",
+      "type": "java.time.Duration",
+      "description": "If an SSL Certificate will be invalid within the time span defined by this threshold, it should trigger a warning.",
+      "defaultValue": "14d"
+    },
+    {
+      "name": "management.health.ssl.enabled",
+      "type": "java.lang.Boolean",
+      "description": "Whether to enable SSL Certificate health check.",
+      "defaultValue": true
+    },
     {
       "name": "management.httpexchanges.recording.enabled",
       "type": "java.lang.Boolean",
@@ -283,6 +295,12 @@
       "description": "Whether to enable process info.",
       "defaultValue": false
     },
+    {
+      "name": "management.info.ssl.enabled",
+      "type": "java.lang.Boolean",
+      "description": "Whether to enable SSL Certificate info.",
+      "defaultValue": false
+    },
     {
       "name": "management.metrics.binders.files.enabled",
       "type": "java.lang.Boolean",

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

@@ -104,6 +104,7 @@ org.springframework.boot.actuate.autoconfigure.security.reactive.ReactiveManagem
 org.springframework.boot.actuate.autoconfigure.security.servlet.ManagementWebSecurityAutoConfiguration
 org.springframework.boot.actuate.autoconfigure.session.SessionsEndpointAutoConfiguration
 org.springframework.boot.actuate.autoconfigure.startup.StartupEndpointAutoConfiguration
+org.springframework.boot.actuate.autoconfigure.ssl.SslHealthContributorAutoConfiguration
 org.springframework.boot.actuate.autoconfigure.system.DiskSpaceHealthContributorAutoConfiguration
 org.springframework.boot.actuate.autoconfigure.tracing.BraveAutoConfiguration
 org.springframework.boot.actuate.autoconfigure.tracing.MicrometerTracingAutoConfiguration

spring-boot-project/spring-boot-actuator-autoconfigure/src/test/java/org/springframework/boot/actuate/autoconfigure/info/InfoContributorAutoConfigurationTests.java

@@ -16,11 +16,13 @@
 
 package org.springframework.boot.actuate.autoconfigure.info;
 
+import java.time.Duration;
 import java.util.Map;
 import java.util.Properties;
 
 import org.junit.jupiter.api.Test;
 
+import org.springframework.boot.actuate.autoconfigure.ssl.SslHealthIndicatorProperties;
 import org.springframework.boot.actuate.info.BuildInfoContributor;
 import org.springframework.boot.actuate.info.EnvironmentInfoContributor;
 import org.springframework.boot.actuate.info.GitInfoContributor;
@@ -29,12 +31,16 @@
 import org.springframework.boot.actuate.info.JavaInfoContributor;
 import org.springframework.boot.actuate.info.OsInfoContributor;
 import org.springframework.boot.actuate.info.ProcessInfoContributor;
+import org.springframework.boot.actuate.info.SslInfoContributor;
 import org.springframework.boot.autoconfigure.AutoConfigurations;
+import org.springframework.boot.autoconfigure.ssl.SslAutoConfiguration;
 import org.springframework.boot.info.BuildProperties;
 import org.springframework.boot.info.GitProperties;
 import org.springframework.boot.info.JavaInfo;
 import org.springframework.boot.info.OsInfo;
 import org.springframework.boot.info.ProcessInfo;
+import org.springframework.boot.info.SslInfo;
+import org.springframework.boot.ssl.SslBundles;
 import org.springframework.boot.test.context.runner.ApplicationContextRunner;
 import org.springframework.context.annotation.Bean;
 import org.springframework.context.annotation.Configuration;
@@ -60,7 +66,8 @@ void envContributor() {
 
 	@Test
 	void defaultInfoContributorsEnabled() {
-		this.contextRunner.run((context) -> assertThat(context).doesNotHaveBean(InfoContributor.class));
+		this.contextRunner.run(
+				(context) -> assertThat(context).doesNotHaveBean(InfoContributor.class).doesNotHaveBean(SslInfo.class));
 	}
 
 	@Test
@@ -176,6 +183,54 @@ void processInfoContributor() {
 		});
 	}
 
+	@Test
+	void sslInfoContributor() {
+		this.contextRunner.withConfiguration(AutoConfigurations.of(SslAutoConfiguration.class))
+			.withPropertyValues("management.info.ssl.enabled=true", "server.ssl.bundle=ssltest",
+					"spring.ssl.bundle.jks.ssltest.keystore.location=classpath:test.jks")
+			.run((context) -> {
+				assertThat(context).hasSingleBean(SslInfoContributor.class);
+				assertThat(context).hasSingleBean(SslInfo.class);
+				Map<String, Object> content = invokeContributor(context.getBean(SslInfoContributor.class));
+				assertThat(content).containsKey("ssl");
+				assertThat(content.get("ssl")).isInstanceOf(SslInfo.class);
+			});
+	}
+
+	@Test
+	void sslInfoContributorWithWarningThreshold() {
+		this.contextRunner.withConfiguration(AutoConfigurations.of(SslAutoConfiguration.class))
+			.withPropertyValues("management.info.ssl.enabled=true", "server.ssl.bundle=ssltest",
+					"spring.ssl.bundle.jks.ssltest.keystore.location=classpath:test.jks",
+					"management.health.ssl.certificate-validity-warning-threshold=1d")
+			.run((context) -> {
+				assertThat(context).hasSingleBean(SslInfoContributor.class);
+				assertThat(context).hasSingleBean(SslInfo.class);
+				assertThat(context).hasSingleBean(SslHealthIndicatorProperties.class);
+				assertThat(context.getBean(SslHealthIndicatorProperties.class).getCertificateValidityWarningThreshold())
+					.isEqualTo(Duration.ofDays(1));
+				Map<String, Object> content = invokeContributor(context.getBean(SslInfoContributor.class));
+				assertThat(content).containsKey("ssl");
+				assertThat(content.get("ssl")).isInstanceOf(SslInfo.class);
+			});
+	}
+
+	@Test
+	void customSslInfo() {
+		this.contextRunner.withUserConfiguration(CustomSslInfoConfiguration.class)
+			.withConfiguration(AutoConfigurations.of(SslAutoConfiguration.class))
+			.withPropertyValues("management.info.ssl.enabled=true", "server.ssl.bundle=ssltest",
+					"spring.ssl.bundle.jks.ssltest.keystore.location=classpath:test.jks")
+			.run((context) -> {
+				assertThat(context).hasSingleBean(SslInfoContributor.class);
+				assertThat(context).hasSingleBean(SslInfo.class);
+				assertThat(context.getBean(SslInfo.class)).isSameAs(context.getBean("customSslInfo"));
+				Map<String, Object> content = invokeContributor(context.getBean(SslInfoContributor.class));
+				assertThat(content).containsKey("ssl");
+				assertThat(content.get("ssl")).isInstanceOf(SslInfo.class);
+			});
+	}
+
 	private Map<String, Object> invokeContributor(InfoContributor contributor) {
 		Info.Builder builder = new Info.Builder();
 		contributor.contribute(builder);
@@ -241,4 +296,14 @@ BuildInfoContributor customBuildInfoContributor() {
 
 	}
 
+	@Configuration(proxyBeanMethods = false)
+	static class CustomSslInfoConfiguration {
+
+		@Bean
+		SslInfo customSslInfo(SslBundles sslBundles) {
+			return new SslInfo(sslBundles, Duration.ofDays(7));
+		}
+
+	}
+
 }