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feat:add circuitbreaker demo (#184)
* add circuitbreaker demo * add circuitbreaker demo --------- Co-authored-by: fredrikliu <[email protected]>
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‎polaris-agent-examples/spring-cloud-plugins-examples/spring-cloud-hoxton-examples/quickstart-examples/consumer/pom.xml

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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>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-webflux</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-openfeign</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>org.springframework.cloud</groupId>
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<artifactId>spring-cloud-starter-loadbalancer</artifactId>
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</dependency>
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</dependencies>
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<build>

‎polaris-agent-examples/spring-cloud-plugins-examples/spring-cloud-hoxton-examples/quickstart-examples/consumer/src/main/java/cn/polarismesh/agent/examples/alibaba/cloud/cloud/ConsumerApplication.java

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package cn.polarismesh.agent.examples.alibaba.cloud.cloud;
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import org.springframework.beans.factory.annotation.Autowired;
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import org.springframework.beans.factory.annotation.Qualifier;
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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.CircuitBreakerFactory;
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import org.springframework.cloud.client.loadbalancer.LoadBalanced;
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import org.springframework.cloud.openfeign.FeignClient;
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import org.springframework.context.annotation.Bean;
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import org.springframework.http.ResponseEntity;
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import org.springframework.stereotype.Component;
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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.RestController;
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import org.springframework.web.client.RestTemplate;
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import org.springframework.web.util.DefaultUriBuilderFactory;
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/**
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* @author <a href="mailto:[email protected]">liaochuntao</a>
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this.template = restTemplate;
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}
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@Autowired
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@Qualifier("defaultRestTemplate")
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private RestTemplate defaultRestTemplate;
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@Autowired
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private CircuitBreakerFactory circuitBreakerFactory;
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@Bean
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@LoadBalanced
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public RestTemplate defaultRestTemplate() {
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DefaultUriBuilderFactory uriBuilderFactory = new DefaultUriBuilderFactory("http://service-provider-hoxton");
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RestTemplate restTemplate = new RestTemplate();
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restTemplate.setUriTemplateHandler(uriBuilderFactory);
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return restTemplate;
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}
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@GetMapping("/rest")
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public String circuitBreakRestTemplate() {
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return circuitBreakerFactory
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.create("service-provider-hoxton#/circuitBreak")
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.run(() -> defaultRestTemplate.getForObject("/circuitBreak", String.class),
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throwable -> "trigger the refuse for service callee."
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);
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}
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@GetMapping("/echo/{str}")
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public ResponseEntity<String> rest(@PathVariable String str) {
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ResponseEntity<String> response = template.getForEntity("http://service-provider-hoxton/echo/" + str,
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String.class);
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return response;
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}
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}
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@FeignClient(name = "service-provider-hoxton", contextId = "fallback-from-polaris")
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public interface CircuitBreakerQuickstartCalleeService {
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/**
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* Check circuit break.
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*
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* @return circuit break info
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*/
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@GetMapping("/circuitBreak")
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String circuitBreak();
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}
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@Component
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public class CircuitBreakerQuickstartCalleeServiceFallback implements CircuitBreakerQuickstartCalleeServiceWithFallback {
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@Override
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public String circuitBreak() {
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return "fallback: trigger the refuse for service callee.";
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}
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}
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@FeignClient(name = "service-provider-hoxton", contextId = "fallback-from-code", fallback = CircuitBreakerQuickstartCalleeServiceFallback.class)
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public interface CircuitBreakerQuickstartCalleeServiceWithFallback {
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/**
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* Check circuit break.
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*
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* @return circuit break info
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*/
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@GetMapping("/circuitBreak")
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String circuitBreak();
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}
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}

‎polaris-agent-examples/spring-cloud-plugins-examples/spring-cloud-hoxton-examples/quickstart-examples/pom.xml

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<artifactId>hoxton-quickstart-examples</artifactId>
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<packaging>pom</packaging>
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<modules>
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<module>provider</module>
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<module>provider-b</module>
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<module>provider-a</module>
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<module>consumer</module>
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<module>scg</module>
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</modules>

‎polaris-agent-examples/spring-cloud-plugins-examples/spring-cloud-hoxton-examples/quickstart-examples/provider/Dockerfile renamed to ‎polaris-agent-examples/spring-cloud-plugins-examples/spring-cloud-hoxton-examples/quickstart-examples/provider-a/Dockerfile

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‎polaris-agent-examples/spring-cloud-plugins-examples/spring-cloud-hoxton-examples/quickstart-examples/provider/deployment.yaml renamed to ‎polaris-agent-examples/spring-cloud-plugins-examples/spring-cloud-hoxton-examples/quickstart-examples/provider-a/deployment.yaml

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kind: Deployment
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metadata:
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labels:
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app: service-provider-hoxton
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name: service-provider-hoxton
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app: service-provider-hoxton-a
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name: service-provider-hoxton-a
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namespace: default
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spec:
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replicas: 1
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selector:
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matchLabels:
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app: service-provider-hoxton
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app: service-provider-hoxton-a
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template:
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metadata:
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labels:
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app: service-provider-hoxton
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app: service-provider-hoxton-a
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annotations:
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polarismesh.cn/javaagent: "true"
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polarismesh.cn/javaagentVersion: "1.7.0-RC2"
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polarismesh.cn/javaagentFrameworkName: "spring-cloud"
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polarismesh.cn/javaagentFrameworkVersion: "hoxton"
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spec:
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containers:
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- image: polarismesh/polaris-javaagent-demo-sc-quickstart-hoxton-provider:1.7.0-java8
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- image: polarismesh/polaris-javaagent-demo-sc-quickstart-hoxton-provider-a:1.7.0-java8
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imagePullPolicy: Always
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name: provider
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resources:
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command:
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- /bin/bash
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- -c
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- cd /app && java -Dserver.port=65101 -jar main.jar
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- cd /app && java -Dserver.port=65001 -jar main.jar
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lifecycle:
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preStop:
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exec:

‎polaris-agent-examples/spring-cloud-plugins-examples/spring-cloud-hoxton-examples/quickstart-examples/provider/pom.xml renamed to ‎polaris-agent-examples/spring-cloud-plugins-examples/spring-cloud-hoxton-examples/quickstart-examples/provider-a/pom.xml

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<modelVersion>4.0.0</modelVersion>
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<groupId>com.tencent.polaris</groupId>
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<artifactId>polaris-javaagent-demo-sc-quickstart-hoxton-provider</artifactId>
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<artifactId>polaris-javaagent-demo-sc-quickstart-hoxton-provider-a</artifactId>
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<packaging>jar</packaging>
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<version>1.7.0</version>
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<name>hoxton-provider</name>
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<name>hoxton-provider-a</name>
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<description>Demo Provider Project For Spring Cloud Alibaba</description>
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<dependencyManagement>
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<artifactId>spring-cloud-starter-alibaba-nacos-config</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-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-webflux</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-openfeign</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>org.springframework.cloud</groupId>
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<artifactId>spring-cloud-starter-loadbalancer</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>

‎polaris-agent-examples/spring-cloud-plugins-examples/spring-cloud-hoxton-examples/quickstart-examples/provider/src/main/java/cn/polarismesh/agent/examples/alibaba/cloud/cloud/ProviderApplication.java renamed to ‎polaris-agent-examples/spring-cloud-plugins-examples/spring-cloud-hoxton-examples/quickstart-examples/provider-a/src/main/java/cn/polarismesh/agent/examples/alibaba/cloud/cloud/ProviderApplication.java

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package cn.polarismesh.agent.examples.alibaba.cloud.cloud;
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import org.slf4j.Logger;
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import org.slf4j.LoggerFactory;
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import org.springframework.beans.factory.annotation.Value;
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import org.springframework.boot.SpringApplication;
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import org.springframework.boot.autoconfigure.SpringBootApplication;
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@RestController
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public static class EchoController {
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private static final Logger LOG = LoggerFactory.getLogger(ProviderApplication.class);
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@Value("${name:}")
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private String name;
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@Value("${server.port}")
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private String port;
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@Value("${spring.cloud.client.ip-address:127.0.0.1}")
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private String ip;
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@GetMapping("/circuitBreak")
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public String circuitBreak() {
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LOG.info("Quickstart Callee Service [{}:{}] is called right.", ip, port);
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return String.format("Quickstart Callee Service [%s:%s] is called right.", ip, port);
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}
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@GetMapping("/echo/{string}")
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public String echo(@PathVariable String string) {
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return "Hello, I'm provider, receive msg : "

‎polaris-agent-examples/spring-cloud-plugins-examples/spring-cloud-hoxton-examples/quickstart-examples/provider/src/main/resources/application.properties renamed to ‎polaris-agent-examples/spring-cloud-plugins-examples/spring-cloud-hoxton-examples/quickstart-examples/provider-a/src/main/resources/application.properties

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spring.cloud.nacos.discovery.server-addr=127.0.0.1:8848
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spring.cloud.nacos.discovery.enabled=true
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spring.cloud.nacos.discovery.enabled=false
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management.endpoints.web.exposure.include=*
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management.endpoint.health.show-details=always

‎polaris-agent-examples/spring-cloud-plugins-examples/spring-cloud-hoxton-examples/quickstart-examples/provider/src/main/resources/bootstrap.properties renamed to ‎polaris-agent-examples/spring-cloud-plugins-examples/spring-cloud-hoxton-examples/quickstart-examples/provider-a/src/main/resources/bootstrap.properties

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server.port=65001
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spring.application.name=service-provider-hoxton
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spring.cloud.nacos.config.server-addr=127.0.0.1:8848
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spring.cloud.nacos.config.enabled=true
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spring.cloud.nacos.config.enabled=false
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spring.cloud.nacos.discovery.enabled=false
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spring.cloud.nacos.username=nacos
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spring.cloud.nacos.password=nacos
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spring.cloud.nacos.password=nacos

‎polaris-agent-examples/spring-cloud-plugins-examples/spring-cloud-hoxton-examples/quickstart-examples/provider-b/Dockerfile

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FROM alpine:3.19.1
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ARG file_name
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ARG java_version
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COPY ./target/${file_name} /app/main.jar
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WORKDIR /app
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RUN sed -i 's!http://dl-cdn.alpinelinux.org/!https://mirrors.tencent.com/!g' /etc/apk/repositories
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RUN set -eux && \
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apk add openjdk${java_version} && \
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apk add bind-tools && \
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apk add busybox-extras && \
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apk add findutils && \
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apk add tcpdump && \
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apk add tzdata && \
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apk add curl && \
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apk add bash && \
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cp /usr/share/zoneinfo/Asia/Shanghai /etc/localtime && \
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echo "Asia/Shanghai" > /etc/timezone && \
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date
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RUN chmod 777 /app/
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RUN ls -la /app/
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ENTRYPOINT ["java", "-jar", "/app/main.jar"]

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