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macrozhengmacrozheng
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add hystrix-service
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‎hystrix-service/.gitignore‎

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HELP.md
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target/
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!.mvn/wrapper/maven-wrapper.jar
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!**/src/main/**
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!**/src/test/**
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### STS ###
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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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### IntelliJ IDEA ###
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.idea
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*.iws
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*.iml
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*.ipr
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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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### VS Code ###
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.vscode/

‎hystrix-service/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 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>2.1.7.RELEASE</version>
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<relativePath/> <!-- lookup parent from repository -->
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</parent>
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<groupId>com.macro.cloud</groupId>
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<artifactId>hystrix-service</artifactId>
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<version>0.0.1-SNAPSHOT</version>
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<name>hystrix-service</name>
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<description>Demo project for Spring Boot</description>
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<properties>
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<java.version>1.8</java.version>
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<spring-cloud.version>Greenwich.SR2</spring-cloud.version>
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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-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.cloud</groupId>
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<artifactId>spring-cloud-starter-netflix-eureka-client</artifactId>
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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-starter-netflix-hystrix</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-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-actuator</artifactId>
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</dependency>
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<dependency>
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<groupId>cn.hutool</groupId>
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<artifactId>hutool-all</artifactId>
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<version>4.6.3</version>
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</dependency>
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</dependencies>
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<dependencyManagement>
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<dependencies>
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<dependency>
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<groupId>org.springframework.cloud</groupId>
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<artifactId>spring-cloud-dependencies</artifactId>
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<version>${spring-cloud.version}</version>
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<type>pom</type>
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<scope>import</scope>
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</dependency>
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</dependencies>
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</dependencyManagement>
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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>

‎hystrix-service/src/main/java/com/macro/cloud/HystrixServiceApplication.java‎

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package com.macro.cloud;
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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.cloud.client.circuitbreaker.EnableCircuitBreaker;
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import org.springframework.cloud.client.discovery.EnableDiscoveryClient;
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@EnableCircuitBreaker
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@EnableDiscoveryClient
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@SpringBootApplication
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public class HystrixServiceApplication {
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public static void main(String[] args) {
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SpringApplication.run(HystrixServiceApplication.class, args);
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}
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}

‎hystrix-service/src/main/java/com/macro/cloud/config/RibbonConfig.java‎

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package com.macro.cloud.config;
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import org.springframework.cloud.client.loadbalancer.LoadBalanced;
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import org.springframework.context.annotation.Bean;
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import org.springframework.context.annotation.Configuration;
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import org.springframework.web.client.RestTemplate;
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/**
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* Created by macro on 2019/8/29.
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*/
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@Configuration
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public class RibbonConfig {
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@Bean
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@LoadBalanced
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public RestTemplate restTemplate(){
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return new RestTemplate();
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}
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}

‎hystrix-service/src/main/java/com/macro/cloud/controller/UserHystrixController.java‎

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package com.macro.cloud.controller;
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import cn.hutool.core.thread.ThreadUtil;
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import com.macro.cloud.domain.CommonResult;
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import com.macro.cloud.domain.User;
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import com.macro.cloud.service.UserService;
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import org.springframework.beans.factory.annotation.Autowired;
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import org.springframework.web.bind.annotation.GetMapping;
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import org.springframework.web.bind.annotation.PathVariable;
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import org.springframework.web.bind.annotation.RequestMapping;
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import org.springframework.web.bind.annotation.RestController;
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import java.util.concurrent.ExecutionException;
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import java.util.concurrent.Future;
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/**
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* Created by macro on 2019/9/3.
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*/
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@RestController
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@RequestMapping("/user")
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public class UserHystrixController {
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@Autowired
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private UserService userService;
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@GetMapping("/testFallback/{id}")
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public CommonResult testFallback(@PathVariable Long id) {
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return userService.getUser(id);
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}
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@GetMapping("/testCommand/{id}")
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public CommonResult testCommand(@PathVariable Long id) {
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return userService.getUserCommand(id);
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}
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@GetMapping("/testException/{id}")
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public CommonResult testException(@PathVariable Long id) {
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return userService.getUserException(id);
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}
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@GetMapping("/testCache/{id}")
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public CommonResult testCache(@PathVariable Long id) {
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userService.getUserCache(id);
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userService.getUserCache(id);
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userService.getUserCache(id);
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return new CommonResult("操作成功", 200);
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}
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@GetMapping("/testRemoveCache/{id}")
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public CommonResult testRemoveCache(@PathVariable Long id) {
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userService.getUserCache(id);
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userService.removeCache(id);
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userService.getUserCache(id);
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return new CommonResult("操作成功", 200);
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}
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@GetMapping("/testCollapser")
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public CommonResult testCollapser() throws ExecutionException, InterruptedException {
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Future<User> future1 = userService.getUserFuture(1L);
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Future<User> future2 = userService.getUserFuture(2L);
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future1.get();
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future2.get();
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ThreadUtil.safeSleep(200);
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Future<User> future3 = userService.getUserFuture(3L);
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future3.get();
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return new CommonResult("操作成功", 200);
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}
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}

‎hystrix-service/src/main/java/com/macro/cloud/domain/CommonResult.java‎

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package com.macro.cloud.domain;
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/**
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* Created by macro on 2019/8/29.
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*/
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public class CommonResult<T> {
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private T data;
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private String message;
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private Integer code;
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public CommonResult() {
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}
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public CommonResult(T data, String message, Integer code) {
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this.data = data;
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this.message = message;
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this.code = code;
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}
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public CommonResult(String message, Integer code) {
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this(null, message, code);
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}
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public CommonResult(T data) {
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this(data, "操作成功", 200);
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}
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public T getData() {
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return data;
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}
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public void setData(T data) {
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this.data = data;
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}
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public String getMessage() {
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return message;
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}
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public void setMessage(String message) {
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this.message = message;
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}
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public Integer getCode() {
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return code;
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}
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public void setCode(Integer code) {
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this.code = code;
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}
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}

‎hystrix-service/src/main/java/com/macro/cloud/domain/User.java‎

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package com.macro.cloud.domain;
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/**
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* Created by macro on 2019/8/29.
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*/
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public class User {
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private Long id;
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private String username;
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private String password;
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public User() {
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}
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public User(Long id, String username, String password) {
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this.id = id;
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this.username = username;
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this.password = password;
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}
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public Long getId() {
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return id;
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}
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public void setId(Long id) {
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this.id = id;
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}
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public String getUsername() {
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return username;
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}
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public void setUsername(String username) {
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this.username = username;
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}
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public String getPassword() {
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return password;
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}
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public void setPassword(String password) {
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this.password = password;
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}
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}

‎hystrix-service/src/main/java/com/macro/cloud/filter/HystrixRequestContextFilter.java‎

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package com.macro.cloud.filter;
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import com.netflix.hystrix.strategy.concurrency.HystrixRequestContext;
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import org.springframework.stereotype.Component;
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import javax.servlet.*;
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import javax.servlet.annotation.WebFilter;
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import java.io.IOException;
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/**
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* Created by macro on 2019/9/4.
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*/
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@Component
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@WebFilter(urlPatterns = "/*",asyncSupported = true)
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public class HystrixRequestContextFilter implements Filter {
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@Override
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public void doFilter(ServletRequest servletRequest, ServletResponse servletResponse, FilterChain filterChain) throws IOException, ServletException {
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HystrixRequestContext context = HystrixRequestContext.initializeContext();
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try {
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filterChain.doFilter(servletRequest, servletResponse);
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} finally {
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context.close();
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}
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}
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}

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