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using sentinel feign in nacos discovery example

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pull/143/head
fangjian0423 6 years ago
parent 6104799a36
commit be2f52c880
6 changed files with 112 additions and 41 deletions
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5
spring-cloud-alibaba-examples/nacos-example/nacos-discovery-example/nacos-discovery-consumer-example/pom.xml
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@ -40,6 +40,11 @@
<artifactId>spring-cloud-starter-feign</artifactId>
</dependency>
<dependency>
<groupId>org.springframework.cloud</groupId>
<artifactId>spring-cloud-starter-alibaba-sentinel</artifactId>
</dependency>
</dependencies>
<build>

56
spring-cloud-alibaba-examples/nacos-example/nacos-discovery-example/nacos-discovery-consumer-example/src/main/java/org/springframework/cloud/alibaba/cloud/examples/ConsumerApplication.java
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@ -2,6 +2,7 @@ package org.springframework.cloud.alibaba.cloud.examples;
import org.springframework.boot.SpringApplication;
import org.springframework.boot.autoconfigure.SpringBootApplication;
import org.springframework.cloud.alibaba.cloud.examples.ConsumerApplication.EchoService;
import org.springframework.cloud.client.discovery.EnableDiscoveryClient;
import org.springframework.cloud.client.loadbalancer.LoadBalanced;
import org.springframework.cloud.netflix.feign.EnableFeignClients;
@ -10,6 +11,7 @@ import org.springframework.context.annotation.Bean;
import org.springframework.web.bind.annotation.PathVariable;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RequestMethod;
import org.springframework.web.bind.annotation.RequestParam;
import org.springframework.web.client.RestTemplate;
/**
@ -20,22 +22,50 @@ import org.springframework.web.client.RestTemplate;
@EnableFeignClients
public class ConsumerApplication {
@LoadBalanced
@Bean
public RestTemplate restTemplate() {
return new RestTemplate();
}
@LoadBalanced
@Bean
public RestTemplate restTemplate() {
return new RestTemplate();
}
public static void main(String[] args) {
SpringApplication.run(ConsumerApplication.class, args);
}
@FeignClient(name = "service-provider", fallback = EchoServiceFallback.class, configuration = FeignConfiguration.class)
public interface EchoService {
@RequestMapping(value = "/echo/{str}", method = RequestMethod.GET)
String echo(@PathVariable("str") String str);
@RequestMapping(value = "/divide", method = RequestMethod.GET)
String divide(@RequestParam("a") Integer a, @RequestParam("b") Integer b);
public static void main(String[] args) {
SpringApplication.run(ConsumerApplication.class, args);
}
@RequestMapping(value = "/notFound", method = RequestMethod.GET)
String notFound();
}
@FeignClient(name = "service-provider")
public interface EchoService {
@RequestMapping(value = "/echo/{str}", method = RequestMethod.GET)
String echo(@PathVariable("str") String str);
}
}
class FeignConfiguration {
@Bean
public EchoServiceFallback echoServiceFallback() {
return new EchoServiceFallback();
}
}
class EchoServiceFallback implements EchoService {
@Override
public String echo(@PathVariable("str") String str) {
return "echo fallback";
}
@Override
public String divide(@RequestParam Integer a, @RequestParam Integer b) {
return "divide fallback";
}
@Override
public String notFound() {
return "notFound fallback";
}
}

66
spring-cloud-alibaba-examples/nacos-example/nacos-discovery-example/nacos-discovery-consumer-example/src/main/java/org/springframework/cloud/alibaba/cloud/examples/TestController.java
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@ -6,6 +6,7 @@ import org.springframework.cloud.client.discovery.DiscoveryClient;
import org.springframework.web.bind.annotation.PathVariable;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RequestMethod;
import org.springframework.web.bind.annotation.RequestParam;
import org.springframework.web.bind.annotation.RestController;
import org.springframework.web.client.RestTemplate;
@ -15,31 +16,42 @@ import org.springframework.web.client.RestTemplate;
@RestController
public class TestController {
@Autowired
private RestTemplate restTemplate;
@Autowired
private EchoService echoService;
@Autowired
private DiscoveryClient discoveryClient;
@RequestMapping(value = "/echo-rest/{str}", method = RequestMethod.GET)
public String rest(@PathVariable String str) {
return restTemplate.getForObject("http://service-provider/echo/" + str, String.class);
}
@RequestMapping(value = "/echo-feign/{str}", method = RequestMethod.GET)
public String feign(@PathVariable String str) {
return echoService.echo(str);
}
@RequestMapping(value="/services/{service}",method = RequestMethod.GET)
public Object client(@PathVariable String service){
return discoveryClient.getInstances(service);
}
@RequestMapping(value="/services",method = RequestMethod.GET)
public Object services(){
return discoveryClient.getServices();
}
@Autowired
private RestTemplate restTemplate;
@Autowired
private EchoService echoService;
@Autowired
private DiscoveryClient discoveryClient;
@RequestMapping(value = "/echo-rest/{str}", method = RequestMethod.GET)
public String rest(@PathVariable String str) {
return restTemplate.getForObject("http://service-provider/echo/" + str,
String.class);
}
@RequestMapping(value = "/notFound-feign", method = RequestMethod.GET)
public String notFound() {
return echoService.notFound();
}
@RequestMapping(value = "/divide-feign", method = RequestMethod.GET)
public String divide(@RequestParam Integer a, @RequestParam Integer b) {
return echoService.divide(a, b);
}
@RequestMapping(value = "/echo-feign/{str}", method = RequestMethod.GET)
public String feign(@PathVariable String str) {
return echoService.echo(str);
}
@RequestMapping(value = "/services/{service}", method = RequestMethod.GET)
public Object client(@PathVariable String service) {
return discoveryClient.getInstances(service);
}
@RequestMapping(value = "/services", method = RequestMethod.GET)
public Object services() {
return discoveryClient.getServices();
}
}

10
spring-cloud-alibaba-examples/nacos-example/nacos-discovery-example/nacos-discovery-consumer-example/src/main/resources/application.properties
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@ -1,4 +1,12 @@
spring.application.name=service-consumer
server.port=18083
management.endpoints.web.exposure.include=*
spring.cloud.nacos.discovery.server-addr=127.0.0.1:8848
spring.cloud.nacos.discovery.server-addr=127.0.0.1:8848
feign.sentinel.enabled=true
spring.cloud.sentinel.transport.dashboard=localhost:8080
spring.cloud.sentinel.eager=true
spring.cloud.sentinel.datasource.ds1.file.file=classpath: flowrule.json
spring.cloud.sentinel.datasource.ds1.file.data-type=json

10
spring-cloud-alibaba-examples/nacos-example/nacos-discovery-example/nacos-discovery-consumer-example/src/main/resources/flowrule.json
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@ -0,0 +1,10 @@
[
{
"resource": "GET:http://service-provider/echo/{str}",
"controlBehavior": 0,
"count": 1,
"grade": 1,
"limitApp": "default",
"strategy": 0
}
]

6
spring-cloud-alibaba-examples/nacos-example/nacos-discovery-example/nacos-discovery-provider-example/src/main/java/org/springframework/cloud/alibaba/cloud/examples/ProviderApplication.java
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@ -6,6 +6,7 @@ import org.springframework.cloud.client.discovery.EnableDiscoveryClient;
import org.springframework.web.bind.annotation.PathVariable;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RequestMethod;
import org.springframework.web.bind.annotation.RequestParam;
import org.springframework.web.bind.annotation.RestController;
/**
@ -25,5 +26,10 @@ public class ProviderApplication {
public String echo(@PathVariable String string) {
return "hello Nacos Discovery " + string;
}
@RequestMapping(value = "/divide", method = RequestMethod.GET)
public String divide(@RequestParam Integer a, @RequestParam Integer b) {
return String.valueOf(a / b);
}
}
}

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