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BAEL-6179: Add Actuator sample without Spring Boot (#14032) 

* BAEL-6179: Add Actuator sample without Spring Boot

* BAEL-6179: Simplify custom health indicator
This commit is contained in:
Ralf Ueberfuhr 2023-05-18 14:01:50 +02:00 committed by GitHub
parent 9bb795bfd3
commit 68324c8f6b
9 changed files with 253 additions and 0 deletions
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3
parent-spring-6/README.md Normal file
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## Parent Spring 5
This is a parent module for all projects using Spring 5

41
parent-spring-6/pom.xml Normal file
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<?xml version="1.0" encoding="UTF-8"?>
<project xmlns="http://maven.apache.org/POM/4.0.0"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
<modelVersion>4.0.0</modelVersion>
<artifactId>parent-spring-6</artifactId>
<version>0.0.1-SNAPSHOT</version>
<name>parent-spring-6</name>
<packaging>pom</packaging>
<description>Parent for all spring 6 core modules</description>
<parent>
<groupId>com.baeldung</groupId>
<artifactId>parent-modules</artifactId>
<version>1.0.0-SNAPSHOT</version>
</parent>
<dependencyManagement>
<dependencies>
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-framework-bom</artifactId>
<version>${spring.version}</version>
<type>pom</type>
<scope>import</scope>
</dependency>
</dependencies>
</dependencyManagement>
<dependencies>
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-core</artifactId>
</dependency>
</dependencies>
<properties>
<spring.version>6.0.8</spring.version>
</properties>
</project>

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pom.xml
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<module>parent-boot-2</module>
<module>parent-spring-4</module>
<module>parent-spring-5</module>
<module>parent-spring-6</module>
<module>parent-java</module>
<module>checker-framework</module>
@ -408,6 +409,7 @@
<module>parent-boot-2</module>
<module>parent-spring-4</module>
<module>parent-spring-5</module>
<module>parent-spring-6</module>
<module>parent-java</module>
<module>spring-4</module>
@ -468,6 +470,7 @@
<module>parent-boot-2</module>
<module>parent-spring-4</module>
<module>parent-spring-5</module>
<module>parent-spring-6</module>
<module>parent-java</module>
<module>apache-spark</module>
@ -509,6 +512,7 @@
<module>parent-boot-2</module>
<module>parent-spring-4</module>
<module>parent-spring-5</module>
<module>parent-spring-6</module>
<module>parent-java</module>
<module>checker-framework</module>
@ -577,6 +581,7 @@
<module>parent-boot-2</module>
<module>parent-spring-4</module>
<module>parent-spring-5</module>
<module>parent-spring-6</module>
<module>parent-java</module>
<module>spring-4</module>
@ -629,6 +634,7 @@
<module>parent-boot-2</module>
<module>parent-spring-4</module>
<module>parent-spring-5</module>
<module>parent-spring-6</module>
<module>parent-java</module>
<module>apache-spark</module>
@ -896,6 +902,7 @@
<module>spring-5-webflux</module>
<module>spring-5-webflux-2</module>
<module>spring-activiti</module>
<module>spring-actuator</module>
<module>spring-core-2</module>
<module>spring-core-3</module>
<module>spring-credhub</module>
@ -1201,6 +1208,7 @@
<module>parent-boot-2</module>
<module>parent-spring-4</module>
<module>parent-spring-5</module>
<module>parent-spring-6</module>
<module>parent-java</module>
</modules>

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spring-actuator/pom.xml Normal file
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<?xml version="1.0" encoding="UTF-8"?>
<project xmlns="http://maven.apache.org/POM/4.0.0"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
<modelVersion>4.0.0</modelVersion>
<artifactId>spring-actuator</artifactId>
<name>spring-actuator</name>
<packaging>war</packaging>
<description>Demo project for Spring Boot Actuator without Spring Boot</description>
<parent>
<groupId>com.baeldung</groupId>
<artifactId>parent-spring-6</artifactId>
<version>0.0.1-SNAPSHOT</version>
<relativePath>../parent-spring-6</relativePath>
</parent>
<dependencies>
<dependency>
<groupId>jakarta.servlet</groupId>
<artifactId>jakarta.servlet-api</artifactId>
<version>5.0.0</version>
<scope>provided</scope>
</dependency>
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-webmvc</artifactId>
</dependency>
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-test</artifactId>
<scope>test</scope>
</dependency>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-actuator-autoconfigure</artifactId>
<version>${spring-boot.version}</version>
</dependency>
<!-- Jetty embedded -->
<dependency>
<groupId>org.eclipse.jetty</groupId>
<artifactId>jetty-servlet</artifactId>
<version>${jetty.version}</version>
</dependency>
</dependencies>
<build>
<pluginManagement>
<plugins>
<plugin>
<groupId>org.apache.maven.plugins</groupId>
<artifactId>maven-war-plugin</artifactId>
<version>3.3.2</version>
</plugin>
<!-- to run the server, use mvn jetty:run -->
<plugin>
<groupId>org.eclipse.jetty</groupId>
<artifactId>jetty-maven-plugin</artifactId>
<version>${jetty.version}</version>
</plugin>
</plugins>
</pluginManagement>
<plugins>
<plugin>
<groupId>org.eclipse.jetty</groupId>
<artifactId>jetty-maven-plugin</artifactId>
</plugin>
</plugins>
</build>
<properties>
<spring-boot.version>3.0.6</spring-boot.version>
<jetty.version>11.0.15</jetty.version>
</properties>
</project>

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spring-actuator/src/main/java/com/baeldung/spring/actuator/ActuatorConfiguration.java Normal file
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package com.baeldung.spring.actuator;
import org.springframework.boot.actuate.health.Health;
import org.springframework.boot.actuate.health.HealthIndicator;
import org.springframework.boot.actuate.info.InfoContributor;
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;
@Configuration
public class ActuatorConfiguration {
@Bean
public HealthIndicator sampleHealthIndicator() {
return Health.up()
.withDetail("info", "Sample Health")
::build;
}
@Bean
public InfoContributor provideSampleInfos() {
return builder ->
builder
.withDetail("app-title", "Actuator Sample Application");
}
}

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spring-actuator/src/main/java/com/baeldung/spring/actuator/AppConfig.java Normal file
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package com.baeldung.spring.actuator;
import org.springframework.boot.autoconfigure.EnableAutoConfiguration;
import org.springframework.context.annotation.ComponentScan;
import org.springframework.context.annotation.PropertySource;
@EnableAutoConfiguration
@PropertySource("classpath:application.properties")
@ComponentScan(basePackageClasses = AppConfig.class)
public class AppConfig {
}

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spring-actuator/src/main/java/com/baeldung/spring/actuator/Start.java Normal file
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package com.baeldung.spring.actuator;
import org.eclipse.jetty.server.Server;
import org.eclipse.jetty.servlet.ServletContextHandler;
import org.eclipse.jetty.servlet.ServletHolder;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import org.springframework.web.context.ContextLoaderListener;
import org.springframework.web.context.WebApplicationContext;
import org.springframework.web.context.support.AnnotationConfigWebApplicationContext;
import org.springframework.web.servlet.DispatcherServlet;
public class Start {
private static final Logger logger = LoggerFactory.getLogger(Start.class);
private static final int DEFAULT_PORT = 8080;
private static final String CONTEXT_PATH = "/";
private static final String CONFIG_LOCATION = AppConfig.class.getName();
private static final String MAPPING_URL = "/*";
/*
* This application runs a Jetty webcontainer that runs the
* Spring Dispatcher Servlet.
*/
public static void main(String[] args) throws Exception {
new Start().startJetty(getPortFromArgs(args));
}
private static int getPortFromArgs(String[] args) {
if (args.length > 0) {
try {
return Integer.parseInt(args[0]);
} catch (NumberFormatException ignore) {
}
}
logger.info("No server port configured, falling back to {}", DEFAULT_PORT);
return DEFAULT_PORT;
}
private void startJetty(int port) throws Exception {
logger.info("Starting server at port {}", port);
Server server = new Server(port);
server.setHandler(getServletContextHandler(getContext()));
server.start();
logger.info("Server started at port {}", port);
server.join();
}
private static ServletContextHandler getServletContextHandler(WebApplicationContext context) {
ServletContextHandler contextHandler = new ServletContextHandler();
contextHandler.setErrorHandler(null);
contextHandler.setContextPath(CONTEXT_PATH);
contextHandler.addServlet(new ServletHolder(new DispatcherServlet(context)), MAPPING_URL);
contextHandler.addEventListener(new ContextLoaderListener(context));
return contextHandler;
}
private static WebApplicationContext getContext() {
AnnotationConfigWebApplicationContext context = new AnnotationConfigWebApplicationContext();
context.setConfigLocation(CONFIG_LOCATION);
return context;
}
}

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spring-actuator/src/main/java/com/baeldung/spring/actuator/WebMvcConfiguration.java Normal file
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package com.baeldung.spring.actuator;
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;
import org.springframework.web.servlet.config.annotation.ViewControllerRegistry;
import org.springframework.web.servlet.config.annotation.WebMvcConfigurer;
@Configuration
public class WebMvcConfiguration {
@Bean
public WebMvcConfigurer webMvcConfigurer() {
return new WebMvcConfigurer() {
@Override
public void addViewControllers(ViewControllerRegistry registry) {
registry
.addViewController("/")
.setViewName("redirect:/actuator");
}
};
}
}

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spring-actuator/src/main/resources/application.properties Normal file
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management.endpoints.web.exposure.include=*
management.endpoint.health.show-details=always