新增: 初始化提交
commit
fd3c83f8de
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target/
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!.mvn/wrapper/maven-wrapper.jar
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!**/src/main/**/target/
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!**/src/test/**/target/
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### IntelliJ IDEA ###
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.idea/modules.xml
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.idea/jarRepositories.xml
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.idea/compiler.xml
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.idea/libraries/
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*.iws
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*.iml
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*.ipr
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### Eclipse ###
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.apt_generated
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.classpath
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.factorypath
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.project
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.settings
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.springBeans
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.sts4-cache
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### NetBeans ###
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/nbproject/private/
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/nbbuild/
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/dist/
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/nbdist/
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/.nb-gradle/
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build/
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!**/src/main/**/build/
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!**/src/test/**/build/
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### VS Code ###
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.vscode/
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### Mac OS ###
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.DS_Store
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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 https://maven.apache.org/xsd/maven-4.0.0.xsd">
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<modelVersion>4.0.0</modelVersion>
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<parent>
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<groupId>org.springframework.boot</groupId>
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<artifactId>spring-boot-starter-parent</artifactId>
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<version>3.2.3</version>
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<relativePath/>
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</parent>
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<groupId>space.caoshd</groupId>
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<artifactId>state-machin</artifactId>
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<version>1.0.0-SNAPSHOT</version>
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<name>state-machine</name>
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<properties>
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<java.version>17</java.version>
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<maven.compiler.source>17</maven.compiler.source>
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<maven.compiler.target>17</maven.compiler.target>
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<project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
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</properties>
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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</artifactId>
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</dependency>
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<dependency>
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<groupId>org.springframework.statemachine</groupId>
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<artifactId>spring-statemachine-starter</artifactId>
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<version>4.0.0</version>
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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.projectlombok</groupId>
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<artifactId>lombok</artifactId>
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<scope>provided</scope>
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</dependency>
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</dependencies>
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<build>
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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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</plugin>
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</plugins>
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</build>
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</project>
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package space.caoshd.statemachine;
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import org.springframework.boot.SpringApplication;
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import org.springframework.boot.autoconfigure.SpringBootApplication;
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@SpringBootApplication
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public class StateMachineApplication {
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public static void main(String[] args) {
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SpringApplication.run(StateMachineApplication.class, args);
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}
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}
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package space.caoshd.statemachine.config;
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import org.springframework.context.annotation.Configuration;
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import org.springframework.statemachine.config.EnableStateMachine;
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import org.springframework.statemachine.config.StateMachineConfigurerAdapter;
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import org.springframework.statemachine.config.builders.StateMachineStateConfigurer;
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import org.springframework.statemachine.config.builders.StateMachineTransitionConfigurer;
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import org.springframework.statemachine.config.configurers.ExternalTransitionConfigurer;
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import java.util.EnumSet;
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@Configuration
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@EnableStateMachine(name = "stateMachine")
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public class Config extends StateMachineConfigurerAdapter<Status, Event> {
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@Override
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public void configure(StateMachineStateConfigurer<Status, Event> state) throws Exception {
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state.withStates()
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.initial(Status.INIT)
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.states(EnumSet.allOf(Status.class));
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}
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@Override
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public void configure(StateMachineTransitionConfigurer<Status, Event> transitions) throws Exception {
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ExternalTransitionConfigurer<Status, Event> configurer = transitions.withExternal();
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configurer.source(Status.INIT).target(Status.READY).event(Event.FETCH);
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configurer.source(Status.INIT).target(Status.ERROR).event(Event.FETCH_ERROR);
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configurer.source(Status.READY).target(Status.FINISHED).event(Event.HANDLE);
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configurer.source(Status.INIT).target(Status.ERROR).event(Event.HANDLE_ERROR);
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}
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}
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package space.caoshd.statemachine.config;
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public enum Event {
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FETCH, HANDLE, FETCH_ERROR, HANDLE_ERROR, CALLBACK
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}
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package space.caoshd.statemachine.config;
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public enum Status {
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INIT(0), READY(1), FINISHED(2), ERROR(-1);
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private final Integer code;
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private final String name;
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Status(int code) {
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this.code = code;
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this.name = this.name();
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}
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public Integer getCode() {
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return this.code;
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}
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public String getName() {
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return this.name;
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}
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}
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package space.caoshd.statemachine.service;
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import org.springframework.beans.factory.annotation.Autowired;
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import org.springframework.messaging.Message;
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import org.springframework.messaging.support.MessageBuilder;
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import org.springframework.statemachine.StateMachine;
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import org.springframework.stereotype.Component;
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import space.caoshd.statemachine.config.Event;
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import space.caoshd.statemachine.config.Status;
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@Component
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public class Processor {
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@Autowired
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private StateMachine<Status, Event> stateMachine;
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public boolean process(Event e) {
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Message<Event> message = MessageBuilder.withPayload(e).build();
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return stateMachine.sendEvent(message);
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}
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}
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package space.caoshd.statemachine.service;
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import lombok.extern.slf4j.Slf4j;
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import org.springframework.messaging.Message;
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import org.springframework.messaging.MessageHeaders;
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import org.springframework.statemachine.annotation.OnTransition;
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import org.springframework.stereotype.Component;
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import space.caoshd.statemachine.config.Event;
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@Slf4j
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@Component
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public class StateListener {
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@OnTransition(source = "INIT", target = "READY")
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public boolean fetch(Message<Event> message) {
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MessageHeaders headers = message.getHeaders();
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log.info("fetch");
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return true;
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}
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@OnTransition(source = "READY", target = "FINISHED")
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public boolean handle(Message<Event> message) {
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MessageHeaders headers = message.getHeaders();
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log.info("ready");
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return true;
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}
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@OnTransition(source = "INIT", target = "ERROR")
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public boolean fetchError(Message<Event> message) {
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MessageHeaders headers = message.getHeaders();
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log.info("fetchError");
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return true;
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}
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@OnTransition(source = "READY", target = "ERROR")
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public boolean handleError(Message<Event> message) {
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MessageHeaders headers = message.getHeaders();
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log.info("handleError");
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return true;
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}
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}
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package space.caoshd.statemachine;
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import org.junit.jupiter.api.Test;
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import org.springframework.beans.factory.annotation.Autowired;
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import org.springframework.boot.test.context.SpringBootTest;
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import space.caoshd.statemachine.config.Event;
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import space.caoshd.statemachine.service.Processor;
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@SpringBootTest
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class StateMachineApplicationTests {
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@Autowired
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private Processor processor;
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@Test
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void contextLoads() {
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processor.process(Event.FETCH);
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}
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}
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