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BAEL-2351 programmatically restart spring boot application
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8 files changed

+280
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‎spring-boot-ops/pom.xml

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<version>${jquery.version}</version>
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</dependency>
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<dependency>
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<groupId>org.springframework.cloud</groupId>
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<artifactId>spring-cloud-context</artifactId>
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<version>${springcloud.version}</version>
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</dependency>
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</dependencies>
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<build>
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<jpa.version>2.2</jpa.version>
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<guava.version>18.0</guava.version>
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<subethasmtp.version>3.1.7</subethasmtp.version>
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<springcloud.version>2.0.2.RELEASE</springcloud.version>
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</properties>
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</project>

‎spring-boot-ops/pom.xml~

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<?xml version="1.0" encoding="UTF-8"?>
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<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
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xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
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<modelVersion>4.0.0</modelVersion>
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<artifactId>spring-boot-ops</artifactId>
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<packaging>war</packaging>
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<name>spring-boot-ops</name>
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<description>Demo project for Spring Boot</description>
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<parent>
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<artifactId>parent-boot-2</artifactId>
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<groupId>com.baeldung</groupId>
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<version>0.0.1-SNAPSHOT</version>
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<relativePath>../parent-boot-2</relativePath>
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</parent>
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<dependencies>
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<dependency>
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<groupId>org.springframework.boot</groupId>
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<artifactId>spring-boot-starter-web</artifactId>
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</dependency>
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<dependency>
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<groupId>org.springframework.boot</groupId>
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<artifactId>spring-boot-starter-thymeleaf</artifactId>
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<scope>provided</scope>
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</dependency>
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<dependency>
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<groupId>org.springframework.boot</groupId>
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<artifactId>spring-boot-starter-test</artifactId>
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<scope>test</scope>
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</dependency>
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<dependency>
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<groupId>org.springframework.boot</groupId>
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<artifactId>spring-boot-starter-data-jpa</artifactId>
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</dependency>
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<dependency>
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<groupId>org.springframework.boot</groupId>
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<artifactId>spring-boot-starter-mail</artifactId>
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</dependency>
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<dependency>
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<groupId>org.springframework.boot</groupId>
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<artifactId>spring-boot-starter-actuator</artifactId>
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</dependency>
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<dependency>
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<groupId>com.h2database</groupId>
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<artifactId>h2</artifactId>
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<scope>runtime</scope>
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</dependency>
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<dependency>
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<groupId>javax.persistence</groupId>
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<artifactId>javax.persistence-api</artifactId>
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<version>${jpa.version}</version>
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</dependency>
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<dependency>
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<groupId>com.google.guava</groupId>
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<artifactId>guava</artifactId>
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<version>${guava.version}</version>
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</dependency>
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<dependency>
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<groupId>org.subethamail</groupId>
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<artifactId>subethasmtp</artifactId>
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<version>${subethasmtp.version}</version>
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<scope>test</scope>
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</dependency>
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<dependency>
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<groupId>org.webjars</groupId>
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<artifactId>bootstrap</artifactId>
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<version>${bootstrap.version}</version>
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</dependency>
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<dependency>
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<groupId>org.webjars</groupId>
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<artifactId>jquery</artifactId>
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<version>${jquery.version}</version>
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</dependency>
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<dependency>
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<groupId>org.springframework.cloud</groupId>
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<artifactId>spring-cloud-context</artifactId>
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<version>${springcloud.version}</version>
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</dependency>
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</dependencies>
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<build>
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<finalName>${project.artifactId}</finalName>
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<plugins>
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<plugin>
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<groupId>org.springframework.boot</groupId>
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<artifactId>spring-boot-maven-plugin</artifactId>
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<executions>
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<execution>
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<goals>
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<goal>repackage</goal>
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</goals>
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<configuration>
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<mainClass>com.baeldung.webjar.WebjarsdemoApplication</mainClass>
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</configuration>
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</execution>
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</executions>
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</plugin>
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</plugins>
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</build>
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<profiles>
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<profile>
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<id>autoconfiguration</id>
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<build>
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<plugins>
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<plugin>
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<groupId>org.apache.maven.plugins</groupId>
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<artifactId>maven-surefire-plugin</artifactId>
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<executions>
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<execution>
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<phase>integration-test</phase>
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<goals>
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<goal>test</goal>
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</goals>
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<configuration>
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<excludes>
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<exclude>**/*LiveTest.java</exclude>
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<exclude>**/*IntegrationTest.java</exclude>
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<exclude>**/*IntTest.java</exclude>
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</excludes>
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<includes>
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<include>**/AutoconfigurationTest.java</include>
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</includes>
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</configuration>
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</execution>
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</executions>
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<configuration>
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<systemPropertyVariables>
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<test.mime>json</test.mime>
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</systemPropertyVariables>
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</configuration>
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</plugin>
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</plugins>
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</build>
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</profile>
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</profiles>
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<properties>
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<!-- The main class to start by executing java -jar -->
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<start-class>org.baeldung.boot.Application</start-class>
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<jquery.version>3.1.1</jquery.version>
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<bootstrap.version>3.3.7-1</bootstrap.version>
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<jpa.version>2.2</jpa.version>
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<guava.version>18.0</guava.version>
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<subethasmtp.version>3.1.7</subethasmtp.version>
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</properties>
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</project>

‎spring-boot-ops/src/main/java/com/baeldung/restart/Application.java

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package com.baeldung.restart;
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import org.springframework.boot.ApplicationArguments;
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import org.springframework.boot.SpringApplication;
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import org.springframework.boot.autoconfigure.SpringBootApplication;
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import org.springframework.boot.web.servlet.support.SpringBootServletInitializer;
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import org.springframework.context.ConfigurableApplicationContext;
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@SpringBootApplication
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public class Application extends SpringBootServletInitializer {
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private static ConfigurableApplicationContext context;
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public static void main(String[] args) {
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context = SpringApplication.run(Application.class, args);
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}
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public static void restart() {
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ApplicationArguments args = context.getBean(ApplicationArguments.class);
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Thread thread = new Thread(() -> {
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context.close();
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context = SpringApplication.run(Application.class, args.getSourceArgs());
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});
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thread.setDaemon(false);
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thread.start();
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}
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}

‎spring-boot-ops/src/main/java/com/baeldung/restart/RestartController.java

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package com.baeldung.restart;
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import org.springframework.beans.factory.annotation.Autowired;
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import org.springframework.web.bind.annotation.PostMapping;
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import org.springframework.web.bind.annotation.RestController;
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@RestController
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public class RestartController {
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@Autowired
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private RestartService restartService;
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@PostMapping("/restart")
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public void restart() {
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Application.restart();
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}
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@PostMapping("/restartApp")
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public void restartUsingActuator() {
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restartService.restartApp();
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}
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}

‎spring-boot-ops/src/main/java/com/baeldung/restart/RestartService.java

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package com.baeldung.restart;
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import org.springframework.stereotype.Service;
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import org.springframework.beans.factory.annotation.Autowired;
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import org.springframework.cloud.context.restart.RestartEndpoint;
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@Service
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public class RestartService {
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@Autowired
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private RestartEndpoint restartEndpoint;
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public void restartApp() {
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restartEndpoint.restart();
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}
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}

‎spring-boot-ops/src/main/resources/application.properties

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management.endpoints.web.exposure.include=*
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management.metrics.enable.root=true
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management.metrics.enable.jvm=true
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management.metrics.enable.jvm=true
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management.endpoint.restart.enabled=true

‎spring-boot-ops/src/test/java/com/baeldung/restart/RestartApplicationIntegrationTest.java

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package com.baeldung.restart;
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import static org.junit.Assert.assertEquals;
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import org.junit.Test;
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import org.springframework.boot.test.web.client.TestRestTemplate;
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import org.springframework.http.HttpMethod;
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import org.springframework.http.ResponseEntity;
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public class RestartApplicationIntegrationTest {
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private TestRestTemplate template = new TestRestTemplate();
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@Test
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public void givenBootApp_whenRestart_thenOk() throws Exception {
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Application.main(new String[0]);
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ResponseEntity response = template.exchange("http://localhost:8080/restart",
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HttpMethod.POST, null, Object.class);
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assertEquals(200, response.getStatusCode().value());
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}
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@Test
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public void givenBootApp_whenRestartUsingActuator_thenOk() throws Exception {
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Application.main(new String[] { "--server.port=8090" });
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ResponseEntity response = template.exchange("http://localhost:8090/restartApp",
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HttpMethod.POST, null, Object.class);
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assertEquals(200, response.getStatusCode().value());
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}
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}

‎spring-boot-ops/src/test/resources/application.properties

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management.endpoints.web.exposure.include=*
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management.endpoint.shutdown.enabled=true
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endpoints.shutdown.enabled=true
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endpoints.shutdown.enabled=true
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management.endpoint.restart.enabled=true

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