Spring Cloud构建微服务架构（三）断路器

2016-06-25 22:23:49 +08:00
parent aeb58f4bad
commit 1fc884ec92
4 changed files with 145 additions and 0 deletions
@@ -0,0 +1,72 @@
+<?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>
+
+	<groupId>com.didispace</groupId>
+	<artifactId>eureka-ribbon</artifactId>
+	<version>1.0.0</version>
+	<packaging>jar</packaging>
+
+	<name>eureka-ribbon</name>
+	<description>Spring Cloud project</description>
+
+	<parent>
+		<groupId>org.springframework.boot</groupId>
+		<artifactId>spring-boot-starter-parent</artifactId>
+		<version>1.3.5.RELEASE</version>
+		<relativePath/> <!-- lookup parent from repository -->
+	</parent>
+
+	<properties>
+		<project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
+		<java.version>1.8</java.version>
+	</properties>
+
+	<dependencies>
+		<dependency>
+			<groupId>org.springframework.cloud</groupId>
+			<artifactId>spring-cloud-starter-hystrix</artifactId>
+		</dependency>
+		<dependency>
+			<groupId>org.springframework.cloud</groupId>
+			<artifactId>spring-cloud-starter-ribbon</artifactId>
+		</dependency>
+		<dependency>
+			<groupId>org.springframework.cloud</groupId>
+			<artifactId>spring-cloud-starter-eureka</artifactId>
+		</dependency>
+		<dependency>
+			<groupId>org.springframework.boot</groupId>
+			<artifactId>spring-boot-starter-web</artifactId>
+		</dependency>
+
+		<dependency>
+			<groupId>org.springframework.boot</groupId>
+			<artifactId>spring-boot-starter-test</artifactId>
+			<scope>test</scope>
+		</dependency>
+	</dependencies>
+
+	<dependencyManagement>
+		<dependencies>
+			<dependency>
+				<groupId>org.springframework.cloud</groupId>
+				<artifactId>spring-cloud-dependencies</artifactId>
+				<version>Brixton.RELEASE</version>
+				<type>pom</type>
+				<scope>import</scope>
+			</dependency>
+		</dependencies>
+	</dependencyManagement>
+
+	<build>
+		<plugins>
+			<plugin>
+				<groupId>org.springframework.boot</groupId>
+				<artifactId>spring-boot-maven-plugin</artifactId>
+			</plugin>
+		</plugins>
+	</build>
+
+</project>
@@ -0,0 +1,26 @@
+package com.didispace;
+
+import org.springframework.boot.SpringApplication;
+import org.springframework.boot.autoconfigure.SpringBootApplication;
+import org.springframework.cloud.client.circuitbreaker.EnableCircuitBreaker;
+import org.springframework.cloud.client.discovery.EnableDiscoveryClient;
+import org.springframework.cloud.client.loadbalancer.LoadBalanced;
+import org.springframework.context.annotation.Bean;
+import org.springframework.web.client.RestTemplate;
+
+@SpringBootApplication
+@EnableDiscoveryClient
+@EnableCircuitBreaker
+public class RibbonApplication {
+
+	@Bean
+	@LoadBalanced
+	RestTemplate restTemplate() {
+		return new RestTemplate();
+	}
+
+	public static void main(String[] args) {
+		SpringApplication.run(RibbonApplication.class, args);
+	}
+
+}
@@ -0,0 +1,23 @@
+package com.didispace.service;
+
+import com.netflix.hystrix.contrib.javanica.annotation.HystrixCommand;
+import org.springframework.beans.factory.annotation.Autowired;
+import org.springframework.stereotype.Service;
+import org.springframework.web.client.RestTemplate;
+
+@Service
+public class ComputeService {
+
+    @Autowired
+    RestTemplate restTemplate;
+
+    @HystrixCommand(fallbackMethod = "addServiceFallback")
+    public String addService() {
+        return restTemplate.getForEntity("http://COMPUTE-SERVICE/add?a=10&b=20", String.class).getBody();
+    }
+
+    public String addServiceFallback() {
+        return "error";
+    }
+
+}
@@ -0,0 +1,24 @@
+package com.didispace.web;
+
+import com.didispace.service.ComputeService;
+import com.netflix.hystrix.contrib.javanica.annotation.HystrixCommand;
+import org.springframework.beans.factory.annotation.Autowired;
+import org.springframework.web.bind.annotation.RequestMapping;
+import org.springframework.web.bind.annotation.RequestMethod;
+import org.springframework.web.bind.annotation.RestController;
+import org.springframework.web.client.RestTemplate;
+
+import java.util.Map;
+
+@RestController
+public class ConsumerController {
+
+    @Autowired
+    private ComputeService computeService;
+
+    @RequestMapping(value = "/add", method = RequestMethod.GET)
+    public String add() {
+        return computeService.addService();
+    }
+
+}