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Sentinel 整合完成

This commit is contained in:
YoVinchen 2023-08-17 09:16:56 +08:00
parent f022d1a9a4
commit d50c81ecaa
14 changed files with 122 additions and 13 deletions
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1
.run/BookApplication-01.run.xml
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@ -2,6 +2,7 @@
<configuration default="false" name="BookApplication-01" type="SpringBootApplicationConfigurationType" factoryName="Spring Boot" folderName="图书服务">
<envs>
<env name="server.port" value="8201" />
<env name="spring.cloud.nacos.discovery.cluster-name" value="Chongqing" />
</envs>
<module name="book-service" />
<option name="SPRING_BOOT_MAIN_CLASS" value="com.test.BookApplication" />

1
.run/BookApplication-02.run.xml
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@ -2,6 +2,7 @@
<configuration default="false" name="BookApplication-02" type="SpringBootApplicationConfigurationType" factoryName="Spring Boot" folderName="图书服务">
<envs>
<env name="server.port" value="8202" />
<env name="spring.cloud.nacos.discovery.cluster-name" value="Chengdu" />
</envs>
<module name="book-service" />
<option name="SPRING_BOOT_MAIN_CLASS" value="com.test.BookApplication" />

1
.run/UserApplication-01.run.xml
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@ -2,6 +2,7 @@
<configuration default="false" name="UserApplication-01" type="SpringBootApplicationConfigurationType" factoryName="Spring Boot" folderName="用户服务">
<envs>
<env name="server.port" value="8101" />
<env name="spring.cloud.nacos.discovery.cluster-name" value="Chongqing" />
</envs>
<module name="user-service" />
<option name="SPRING_BOOT_MAIN_CLASS" value="com.test.UserApplication" />

1
.run/UserApplication-02.run.xml
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@ -2,6 +2,7 @@
<configuration default="false" name="UserApplication-02" type="SpringBootApplicationConfigurationType" factoryName="Spring Boot" folderName="用户服务">
<envs>
<env name="server.port" value="8102" />
<env name="spring.cloud.nacos.discovery.cluster-name" value="Chengdu" />
</envs>
<module name="user-service" />
<option name="SPRING_BOOT_MAIN_CLASS" value="com.test.UserApplication" />

4
book-service/pom.xml
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@ -19,6 +19,10 @@
</properties>
<dependencies>
<dependency>
<groupId>com.alibaba.cloud</groupId>
<artifactId>spring-cloud-starter-alibaba-sentinel</artifactId>
</dependency>
<dependency>
<groupId>com.alibaba.cloud</groupId>
<artifactId>spring-cloud-starter-alibaba-nacos-discovery</artifactId>

5
book-service/src/main/resources/application.yml
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@ -14,3 +14,8 @@ spring:
discovery:
# 配置Nacos注册中心地址
server-addr: localhost:8848
namespace: dd668135-0bfe-489f-ab2b-24aefb21d156
sentinel:
transport:
# 添加监控页面地址即可
dashboard: localhost:8858

4
borrow-service/pom.xml
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@ -18,6 +18,10 @@
<project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
</properties>
<dependencies>
<dependency>
<groupId>com.alibaba.cloud</groupId>
<artifactId>spring-cloud-starter-alibaba-sentinel</artifactId>
</dependency>
<dependency>
<groupId>org.springframework.cloud</groupId>
<artifactId>spring-cloud-starter-openfeign</artifactId>

52
borrow-service/src/main/java/com/test/controller/BorrowController.java
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@ -1,12 +1,16 @@
package com.test.controller;
import com.alibaba.csp.sentinel.annotation.SentinelResource;
import com.alibaba.fastjson.JSONObject;
import com.test.entity.UserBorrowDetail;
import com.test.service.BorrowService;
import org.springframework.web.bind.annotation.PathVariable;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RequestParam;
import org.springframework.web.bind.annotation.RestController;
import javax.annotation.Resource;
import java.io.IOException;
/**
@ -22,8 +26,52 @@ public class BorrowController {
@Resource
BorrowService service;
@RequestMapping("/borrow/{uid}")
UserBorrowDetail findUserBorrows(@PathVariable("uid") int uid){
@RequestMapping("/borrow1/{uid}")
UserBorrowDetail findUserBorrows1(@PathVariable("uid") int uid) {
return service.getUserBorrowDetailByUid(uid);
}
@RequestMapping("/borrow2/{uid}")
UserBorrowDetail findUserBorrows2(@PathVariable("uid") int uid) {
return service.getUserBorrowDetailByUid(uid);
}
@RequestMapping("/blocked")
JSONObject blocked() {
JSONObject object = new JSONObject();
object.put("code", 403);
object.put("success", false);
object.put("massage", "您的请求频率过快，请稍后再试！");
return object;
}
// @RequestMapping("/test")
// @SentinelResource(value = "test", fallback = "except", //fallback指定出现异常时的替代方案
// blockHandler = "blocked",
//// 特别注意这种方式会在没有配置blockHandler的情况下，将Sentinel机制内（也就是限流的异常）的异常也一并处理了，如果配置了blockHandler，那么在出现限流时，依然只会执行blockHandler指定的替代方案（因为限流是在方法执行之前进行的）
// exceptionsToIgnore = IOException.class)
// //忽略那些异常，也就是说这些异常出现时不使用替代方案
// String test() {
// throw new RuntimeException("HelloWorld！");
// }
//
// //替代方法必须和原方法返回值和参数一致，最后可以添加一个Throwable作为参数接受异常
// String except(Throwable t) {
// return t.getMessage();
// }
@RequestMapping("/test")
@SentinelResource("test") //注意这里需要添加@SentinelResource才可以，用户资源名称就使用这里定义的资源名称
String findUserBorrows2(@RequestParam(value = "a", required = false) String a,
@RequestParam(value = "b", required = false) String b,
@RequestParam(value = "c",required = false) String c) {
return "请求成功！a = "+a+", b = "+b+", c = "+c;
}
//模拟慢调用
@RequestMapping("/slowCall/{uid}")
String slowCall(@PathVariable("uid") int uid) throws InterruptedException {
//模拟慢调用
Thread.sleep(1000);
return "Hello World";
}
}

9
borrow-service/src/main/java/com/test/service/impl/BorrowServiceImpl.java
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@ -1,6 +1,8 @@
package com.test.service.impl;
import com.alibaba.csp.sentinel.annotation.SentinelResource;
import com.alibaba.csp.sentinel.slots.block.BlockException;
import com.test.entity.Book;
import com.test.entity.Borrow;
import com.test.entity.User;
@ -12,6 +14,7 @@ import com.test.service.client.UserClient;
import org.springframework.stereotype.Service;
import javax.annotation.Resource;
import java.util.Collections;
import java.util.List;
import java.util.stream.Collectors;
@ -35,6 +38,7 @@ public class BorrowServiceImpl implements BorrowService {
BookClient bookClient;
@Override
@SentinelResource(value = "details", blockHandler = "blocked")
public UserBorrowDetail getUserBorrowDetailByUid(int uid) {
List<Borrow> borrow = mapper.getBorrowsByUid(uid);
User user = userClient.getUserById(uid);
@ -44,4 +48,9 @@ public class BorrowServiceImpl implements BorrowService {
.collect(Collectors.toList());
return new UserBorrowDetail(user, bookList);
}
//替代方案，注意参数和返回值需要保持一致，并且参数最后还需要额外添加一个BlockException
public UserBorrowDetail blocked(int uid, BlockException e) {
return new UserBorrowDetail(null, Collections.emptyList());
}
}

14
borrow-service/src/main/resources/application.yml
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@ -14,3 +14,17 @@ spring:
discovery:
# 配置Nacos注册中心地址
server-addr: localhost:8848
# 将ephemeral修改为false，表示非临时实例（用于持续监控）
ephemeral: false
cluster-name: Chengdu
namespace: dd668135-0bfe-489f-ab2b-24aefb21d156
loadbalancer:
nacos:
enabled: true
sentinel:
transport:
# 添加监控页面地址即可
dashboard: localhost:8858
# 关闭Context收敛，这样被监控方法可以进行不同链路的单独控制
web-context-unify: false
block-page: /blocked

12
user-service/pom.xml
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@ -18,6 +18,18 @@
<project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
</properties>
<dependencies>
<dependency>
<groupId>com.alibaba.cloud</groupId>
<artifactId>spring-cloud-starter-alibaba-sentinel</artifactId>
</dependency>
<dependency>
<groupId>org.springframework.cloud</groupId>
<artifactId>spring-cloud-starter-bootstrap</artifactId>
</dependency>
<dependency>
<groupId>com.alibaba.cloud</groupId>
<artifactId>spring-cloud-starter-alibaba-nacos-config</artifactId>
</dependency>
<dependency>
<groupId>com.alibaba.cloud</groupId>
<artifactId>spring-cloud-starter-alibaba-nacos-discovery</artifactId>

2
user-service/src/main/java/com/test/controller/UserController.java
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@ -24,7 +24,7 @@ public class UserController {
//这里以RESTFul风格为例
@RequestMapping("/user/{uid}")
public User findUserById(@PathVariable("uid") int uid) {
System.out.println("调用图书服务");
System.out.println("调用用户服务");
return service.getUserById(uid);
}
}

15
user-service/src/main/resources/application.yml
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@ -1,16 +1,11 @@
server:
port: 8101
spring:
datasource:
driver-class-name: com.mysql.cj.jdbc.Driver
url: jdbc:mysql://43.143.164.194:3306/mac
username: mac
password: mactest
# 应用名称 userservice
application:
name: userservice
cloud:
nacos:
discovery:
# 配置Nacos注册中心地址
server-addr: localhost:8848
namespace: dd668135-0bfe-489f-ab2b-24aefb21d156
sentinel:
transport:
# 添加监控页面地址即可
dashboard: localhost:8858

14
user-service/src/main/resources/bootstrap.yml Normal file
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@ -0,0 +1,14 @@
spring:
application:
# 服务名称和配置文件保持一致
name: userservice
profiles:
# 环境也是和配置文件保持一致
active: dev
cloud:
nacos:
config:
# 配置文件后缀名
file-extension: yml
# 配置中心服务器地址，也就是Nacos地址
server-addr: localhost:8848