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Hystrix集群及集群监控turbine

Hystrix集群及监控turbine

前面Dashboard演示的仅仅是单机服务监控，实际项目基本都是集群，所以这里集群监控用的是turbine。

turbine是基于Dashboard的。

先搞个集群；

再microservice-student-provider-hystrix-1004项目的基础上再搞一个microservice-student-provider-hystrix-1005

代码和配置都复制一份，然后修改几个地方；

1、yml配置

  1 ---
  2 server:
  3   port: 1004
  4   context-path: /
  5 spring:
  6   datasource:
  7     type: com.alibaba.druid.pool.DruidDataSource
  8     driver-class-name: com.mysql.jdbc.Driver
  9     url: jdbc:mysql://localhost:3306/j2ee?useUnicode=true&characterEncoding=utf8
 10     username: root
 11     password: 12345
 12   jpa:
 13     hibernate:
 14       ddl-auto: update
 15     show-sql: true
 16   application:
 17     name: microservice-student
 18   profiles: provider-hystrix-1004
 19 
 20 eureka:
 21   instance:
 22     hostname: localhost
 23     appname: microservice-student
 24     instance-id: microservice-student:1004
 25     prefer-ip-address: true
 26   client:
 27     service-url:
 28       defaultZone: http://eureka2001.yuan.com:2001/eureka/,http://eureka2002.yuan.com:2002/eureka/,http://eureka2003.yuan.com:2003/eureka/
 29 
 30 info:
 31   groupId: com.yuan.testSpringcloud
 32   artifactId: microservice-student-provider-hystrix-1004
 33   version: 1.0-SNAPSHOT
 34   userName: http://yuan.com
 35   phone: 123456
 36 
 37 hystrix:
 38   command:
 39     default:
 40       execution:
 41         isolation:
 42           thread:
 43             timeoutInMilliseconds: 1500
 44 
 45 ---
 46 server:
 47   port: 1005
 48   context-path: /
 49 spring:
 50   datasource:
 51     type: com.alibaba.druid.pool.DruidDataSource
 52     driver-class-name: com.mysql.jdbc.Driver
 53     url: jdbc:mysql://localhost:3306/j2ee?useUnicode=true&characterEncoding=utf8
 54     username: root
 55     password: 12345
 56   jpa:
 57     hibernate:
 58       ddl-auto: update
 59     show-sql: true
 60   application:
 61     name: microservice-student
 62   profiles: provider-hystrix-1005
 63 
 64 eureka:
 65   instance:
 66     hostname: localhost
 67     appname: microservice-student
 68     instance-id: microservice-student:1005
 69     prefer-ip-address: true
 70   client:
 71     service-url:
 72       defaultZone: http://eureka2001.yuan.com:2001/eureka/,http://eureka2002.yuan.com:2002/eureka/,http://eureka2003.yuan.com:2003/eureka/
 73 
 74 info:
 75   groupId: com.yuan.testSpringcloud
 76   artifactId: microservice-student-provider-hystrix-1005
 77   version: 1.0-SNAPSHOT
 78   userName: http://yuan.com
 79   phone: 123456
 80 
 81 hystrix:
 82   command:
 83     default:
 84       execution:
 85         isolation:
 86           thread:
 87             timeoutInMilliseconds: 1500
 88 
 89 ---
 90 server:
 91   port: 1006
 92   context-path: /
 93 spring:
 94   datasource:
 95     type: com.alibaba.druid.pool.DruidDataSource
 96     driver-class-name: com.mysql.jdbc.Driver
 97     url: jdbc:mysql://localhost:3306/j2ee?useUnicode=true&characterEncoding=utf8
 98     username: root
 99     password: 12345
100   jpa:
101     hibernate:
102       ddl-auto: update
103     show-sql: true
104   application:
105     name: microservice-student
106   profiles: provider-hystrix-1006
107 
108 eureka:
109   instance:
110     hostname: localhost
111     appname: microservice-student
112     instance-id: microservice-student:1006
113     prefer-ip-address: true
114   client:
115     service-url:
116       defaultZone: http://eureka2001.yuan.com:2001/eureka/,http://eureka2002.yuan.com:2002/eureka/,http://eureka2003.yuan.com:2003/eureka/
117 
118 info:
119   groupId: com.yuan.testSpringcloud
120   artifactId: microservice-student-provider-hystrix-1006
121   version: 1.0-SNAPSHOT
122   userName: http://yuan.com
123   phone: 123456
124 
125 hystrix:
126   command:
127     default:
128       execution:
129         isolation:
130           thread:
131             timeoutInMilliseconds: 1500

2、启动类配置

 1 package com.yuan.microservicestudentproviderhystrix;
 2 
 3 import org.springframework.boot.SpringApplication;
 4 import org.springframework.boot.autoconfigure.SpringBootApplication;
 5 import org.springframework.boot.autoconfigure.domain.EntityScan;
 6 import org.springframework.cloud.client.circuitbreaker.EnableCircuitBreaker;
 7 import org.springframework.cloud.netflix.eureka.EnableEurekaClient;
 8 
 9 @EnableCircuitBreaker
10 @EntityScan("com.yuan.*.*")
11 @EnableEurekaClient
12 @SpringBootApplication
13 public class MicroserviceStudentProviderHystrixApplication {
14 
15     public static void main(String[] args) {
16         SpringApplication.run(MicroserviceStudentProviderHystrixApplication.class, args);
17     }
18 
19 }

这样的话就有了 hystrix集群服务；

3、我们新建项目microservice-student-consumer-hystrix-turbine-91

pom.xml加下依赖

 1 <?xml version="1.0" encoding="UTF-8"?>
 2 <project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
 3          xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 https://maven.apache.org/xsd/maven-4.0.0.xsd">
 4     <modelVersion>4.0.0</modelVersion>
 5     <parent>
 6         <groupId>com.yuan</groupId>
 7         <artifactId>t226microservice</artifactId>
 8         <version>1.0-SNAPSHOT</version>
 9     </parent>
10     <artifactId>microservice-student-consumer-hystrix-turbine-91</artifactId>
11 
12     <properties>
13         <java.version>1.8</java.version>
14     </properties>
15 
16     <dependencies>
17         <dependency>
18             <groupId>org.springframework.boot</groupId>
19             <artifactId>spring-boot-starter</artifactId>
20         </dependency>
21 
22         <dependency>
23             <groupId>org.springframework.boot</groupId>
24             <artifactId>spring-boot-starter-test</artifactId>
25             <scope>test</scope>
26             <exclusions>
27                 <exclusion>
28                     <groupId>org.junit.vintage</groupId>
29                     <artifactId>junit-vintage-engine</artifactId>
30                 </exclusion>
31             </exclusions>
32         </dependency>
33 
34         <dependency>
35             <groupId>org.springframework.boot</groupId>
36             <artifactId>spring-boot-starter-actuator</artifactId>
37         </dependency>
38         <dependency>
39             <groupId>org.springframework.cloud</groupId>
40             <artifactId>spring-cloud-starter-turbine</artifactId>
41         </dependency>
42 
43     </dependencies>
44 
45     <build>
46         <plugins>
47             <plugin>
48                 <groupId>org.springframework.boot</groupId>
49                 <artifactId>spring-boot-maven-plugin</artifactId>
50             </plugin>
51         </plugins>
52     </build>
53 
54 </project>

添加application.yml的配置

 1 server:
 2   port: 91
 3   context-path: /
 4 eureka:
 5   client:
 6     service-url:
 7       defaultZone: http://eureka2001.yuan.com:2001/eureka/,http://eureka2002.yuan.com:2002/eureka/,http://eureka2003.yuan.com:2003/eureka/
 8 turbine:
 9   app-config: microservice-student   
10   clusterNameExpression: "'default'" 
11 spring:
12   application:
13     name: turbine

1、启动类MicroserviceStudentConsumerHystrixTurbine91Application 加注解：@EnableTurbine

 1 package com.yuan.microservicestudentconsumerhystrixturbine91;
 2 
 3 import org.springframework.boot.SpringApplication;
 4 import org.springframework.boot.autoconfigure.SpringBootApplication;
 5 import org.springframework.boot.autoconfigure.jdbc.DataSourceAutoConfiguration;
 6 import org.springframework.boot.autoconfigure.orm.jpa.HibernateJpaAutoConfiguration;
 7 import org.springframework.cloud.netflix.turbine.EnableTurbine;
 8 
 9 @SpringBootApplication(exclude={DataSourceAutoConfiguration.class, HibernateJpaAutoConfiguration.class})
10 @EnableTurbine
11 public class MicroserviceStudentConsumerHystrixTurbine91Application {
12 
13     public static void main(String[] args) {
14         SpringApplication.run(MicroserviceStudentConsumerHystrixTurbine91Application.class, args);
15     }
16 
17 }

测试：

先启动三个eureka，然后把1004 1005 带hystrix的服务都启动；

microservice-student-consumer-80这个也启动，方便测试；

dashboard，turbine启动；

这样的话 http://localhost/student/hystrix 就能调用服务集群；

http://localhost:91/turbine.stream 可以监控数据，实时ping 返回data

Feign、Hystrix整合

前面的代码，用@HystrixCommand fallbackMethod是很不好的，因为和业务代码耦合度太高，不利于维护，所以需要解耦，这我们讲下Feign Hystrix整合。

1、microservice-student-provider-hystrix项目修改

我们不用原先那套。按照正常的逻辑来写；

StudentService加新的接口方法：

 1 package com.yuan.microservicestudentproviderhystrix.service;
 2 
 3 import com.yuan.microservicecommon.entity.Student;
 4 
 5 import java.util.List;
 6 import java.util.Map;
 7 
 8 public interface StudentService {
 9  
10     public void save(Student student);
11      
12     public Student findById(Integer id);
13      
14     public List<Student> list();
15      
16     public void delete(Integer id);
17 
18     /**
19      * 测试Hystrix服务降级
20      * @return
21      */
22     public Map<String,Object> hystrix();
23      
24      
25 }

实现类

 1 package com.yuan.microservicestudentproviderhystrix.service.impl;
 2 
 3 import com.yuan.microservicecommon.entity.Student;
 4 import com.yuan.microservicestudentproviderhystrix.repository.StudentRepository;
 5 import com.yuan.microservicestudentproviderhystrix.service.StudentService;
 6 import org.springframework.beans.factory.annotation.Autowired;
 7 import org.springframework.beans.factory.annotation.Value;
 8 import org.springframework.stereotype.Service;
 9 
10 import java.util.HashMap;
11 import java.util.List;
12 import java.util.Map;
13 
14 @Service
15 public class StudentServiceImpl implements StudentService {
16     @Autowired
17     private StudentRepository studentRepository;
18 
19     @Value("${server.port}")
20     private String port;
21 
22     @Override
23     public void save(Student student) {
24         studentRepository.save(student);
25     }
26 
27     @Override
28     public Student findById(Integer id) {
29         return studentRepository.findOne(id);
30     }
31 
32     @Override
33     public List<Student> list() {
34         return studentRepository.findAll();
35     }
36 
37     @Override
38     public void delete(Integer id) {
39         studentRepository.delete(id);
40     }
41 
42     @Override
43     public Map<String, Object> hystrix() {
44         Map<String,Object> map=new HashMap<String,Object>();
45         map.put("code", 200);
46         map.put("info","工号【"+port+"】正在为您服务");
47         return map;
48     }
49 
50 }

Controller层

 1 package com.yuan.microservicestudentproviderhystrix.controller;
 2 
 3 import com.netflix.hystrix.contrib.javanica.annotation.HystrixCommand;
 4 import com.yuan.microservicecommon.entity.Student;
 5 import com.yuan.microservicestudentproviderhystrix.service.StudentService;
 6 import org.springframework.beans.factory.annotation.Autowired;
 7 import org.springframework.beans.factory.annotation.Value;
 8 import org.springframework.web.bind.annotation.*;
 9 
10 import java.util.HashMap;
11 import java.util.List;
12 import java.util.Map;
13 
14 @RestController
15 @RequestMapping("/student")
16 public class StudentProviderController {
17  
18     @Autowired
19     private StudentService studentService;
20 
21     @Value("${server.port}")
22     private String port;
23      
24     @PostMapping(value="/save")
25     public boolean save(Student student){
26         try{
27             studentService.save(student);  
28             return true;
29         }catch(Exception e){
30             return false;
31         }
32     }
33      
34     @GetMapping(value="/list")
35     public List<Student> list(){
36         return studentService.list();
37     }
38      
39     @GetMapping(value="/get/{id}")
40     public Student get(@PathVariable("id") Integer id){
41         return studentService.findById(id);
42     }
43      
44     @GetMapping(value="/delete/{id}")
45     public boolean delete(@PathVariable("id") Integer id){
46         try{
47             studentService.delete(id);
48             return true;
49         }catch(Exception e){
50             return false;
51         }
52     }
53 
54     @RequestMapping("/ribbon")
55     public String ribbon(){
56         return "工号【"+port+"】正在为您服务";
57     }
58 
59     /**
60      * 测试Hystrix服务降级
61      * @return
62      * @throws InterruptedException
63      */
64     @ResponseBody
65     @GetMapping(value="/hystrix")
66 //    @HystrixCommand(fallbackMethod="hystrixFallback")
67     public Map<String,Object> hystrix() throws InterruptedException{
68         Thread.sleep(1000);
69 //        Map<String,Object> map=new HashMap<String,Object>();
70 //        map.put("code", 200);
71 //        map.put("info","工号【"+port+"】正在为您服务");
72 //        return map;
73         return this.studentService.hystrix();
74     }
75 
76 //    public Map<String,Object> hystrixFallback() throws InterruptedException{
77 //        Map<String,Object> map=new HashMap<String,Object>();
78 //        map.put("code", 500);
79 //        map.put("info", "系统【"+port+"】繁忙，稍后重试");
80 //        return map;
81 //    }
82 
83 }

microservice-common项目修改StudentClientService

 1 package com.yuan.microservicecommon.service;
 2 
 3 import com.yuan.microservicecommon.entity.Student;
 4 import org.springframework.cloud.netflix.feign.FeignClient;
 5 import org.springframework.web.bind.annotation.GetMapping;
 6 import org.springframework.web.bind.annotation.PathVariable;
 7 import org.springframework.web.bind.annotation.PostMapping;
 8 import org.springframework.web.bind.annotation.RequestMapping;
 9 
10 import java.util.List;
11 import java.util.Map;
12 
13 /**
14  * Student Feign接口客户端
15  * @author Administrator
16  *
17  */
18 @FeignClient(value="MICROSERVICE-STUDENT",fallbackFactory=StudentClientFallbackFactory.class)
19 public interface StudentClientService {
20  
21     /**
22      * 根据id查询学生信息
23      * @param id
24      * @return
25      */
26     @GetMapping(value="/student/get/{id}")
27     public Student get(@PathVariable("id") Integer id);
28      
29     /**
30      * 查询学生信息
31      * @return
32      */
33     @GetMapping(value="/student/list")
34     public List<Student> list();
35      
36     /**
37      * 添加或者修改学生信息
38      * @param student
39      * @return
40      */
41     @PostMapping(value="/student/save")
42     public boolean save(Student student);
43      
44     /**
45      * 根据id删除学生信息
46      * @return
47      */
48     @GetMapping(value="/student/delete/{id}")
49     public boolean delete(@PathVariable("id") Integer id);
50 
51     @RequestMapping("/student/ribbon")
52     public String ribbon();
53 
54     @RequestMapping("/student/hystrix")
55     public Map<String,Object> hystrix();
56 
57 
58 }

StudentClientService接口的@FeignClient注解加下 fallbackFactory属性

1 @FeignClient(value="MICROSERVICE-STUDENT",fallbackFactory=StudentClientFallbackFactory.class)

2、microservice-common项目新建FallbackFactory类，解耦服务熔断服务降级

StudentClientService接口，新增getInfo方法；

1 /**
2  * 服务熔断降级
3  * @return
4  */
5 @GetMapping(value="/student/hystrix")
6 public Map<String,Object> hystrix();

新建 StudentClientFallbackFactory 类，实现FallbackFactory<StudentClientService>接口；

 1 package com.yuan.microservicecommon.service;
 2 
 3 import com.yuan.microservicecommon.entity.Student;
 4 import feign.hystrix.FallbackFactory;
 5 import org.springframework.stereotype.Component;
 6 
 7 import java.util.HashMap;
 8 import java.util.List;
 9 import java.util.Map;
10 
11 @Component
12 public class StudentClientFallbackFactory implements FallbackFactory<StudentClientService> {
13 
14     @Override
15     public StudentClientService create(Throwable throwable) {
16         return new StudentClientService() {
17             @Override
18             public Student get(Integer id) {
19                 return null;
20             }
21 
22             @Override
23             public List<Student> list() {
24                 return null;
25             }
26 
27             @Override
28             public boolean save(Student student) {
29                 return false;
30             }
31 
32             @Override
33             public boolean delete(Integer id) {
34                 return false;
35             }
36 
37             @Override
38             public String ribbon() {
39                 return null;
40             }
41 
42             @Override
43             public Map<String, Object> hystrix() {
44                Map<String,Object> map=new HashMap<String,Object>();
45                   map.put("code", 500);
46                   map.put("info", "系统繁忙，稍后重试");
47                return map;
48             }
49         };
50 
51     }
52 }

修改项目microservice-student-provider-hystrix-1004

Controller层

 1 package com.yuan.microservicestudentproviderhystrix1004.controller;
 2 
 3 import com.netflix.hystrix.contrib.javanica.annotation.HystrixCommand;
 4 import com.yuan.microservicecommon.entity.Student;
 5 import com.yuan.microservicestudentproviderhystrix1004.service.StudentService;
 6 import org.springframework.beans.factory.annotation.Autowired;
 7 import org.springframework.beans.factory.annotation.Value;
 8 import org.springframework.web.bind.annotation.*;
 9 
10 import java.util.HashMap;
11 import java.util.List;
12 import java.util.Map;
13 
14 @RestController
15 @RequestMapping("/student")
16 public class StudentProviderController {
17  
18     @Autowired
19     private StudentService studentService;
20 
21     @Value("${server.port}")
22     private String port;
23      
24     @PostMapping(value="/save")
25     public boolean save(Student student){
26         try{
27             studentService.save(student);  
28             return true;
29         }catch(Exception e){
30             return false;
31         }
32     }
33      
34     @GetMapping(value="/list")
35     public List<Student> list(){
36         return studentService.list();
37     }
38      
39     @GetMapping(value="/get/{id}")
40     public Student get(@PathVariable("id") Integer id){
41         return studentService.findById(id);
42     }
43      
44     @GetMapping(value="/delete/{id}")
45     public boolean delete(@PathVariable("id") Integer id){
46         try{
47             studentService.delete(id);
48             return true;
49         }catch(Exception e){
50             return false;
51         }
52     }
53 
54     @RequestMapping("/ribbon")
55     public String ribbon(){
56         return "工号【"+port+"】正在为您服务";
57     }
58 
59     /**
60      * 测试Hystrix服务降级
61      * @return
62      * @throws InterruptedException
63      */
64     @ResponseBody
65     @GetMapping(value="/hystrix")
66 //    @HystrixCommand(fallbackMethod="hystrixFallback")
67     public Map<String,Object> hystrix() throws InterruptedException{
68         Thread.sleep(2000);
69 //        Map<String,Object> map=new HashMap<String,Object>();
70 //        map.put("code", 200);
71 //        map.put("info","工号【"+port+"】正在为您服务");
72 //        return map;
73         return this.studentService.hystrix();
74     }
75 
76 //    public Map<String,Object> hystrixFallback() throws InterruptedException{
77 //        Map<String,Object> map=new HashMap<String,Object>();
78 //        map.put("code", 500);
79 //        map.put("info", "系统【"+port+"】繁忙，稍后重试");
80 //        return map;
81 //    }
82 
83 }

StudentService

 1 package com.yuan.microservicestudentproviderhystrix1004.service;
 2 
 3 import com.yuan.microservicecommon.entity.Student;
 4 
 5 import java.util.List;
 6 import java.util.Map;
 7 
 8 public interface StudentService {
 9  
10     public void save(Student student);
11      
12     public Student findById(Integer id);
13      
14     public List<Student> list();
15      
16     public void delete(Integer id);
17 
18     /**
19      * 测试Hystrix服务降级
20      * @return
21      */
22     public Map<String,Object> hystrix();
23      
24      
25 }

实现类

 1 package com.yuan.microservicestudentproviderhystrix1004.service.impl;
 2 
 3 import com.yuan.microservicecommon.entity.Student;
 4 import com.yuan.microservicestudentproviderhystrix1004.repository.StudentRepository;
 5 import com.yuan.microservicestudentproviderhystrix1004.service.StudentService;
 6 import org.springframework.beans.factory.annotation.Autowired;
 7 import org.springframework.beans.factory.annotation.Value;
 8 import org.springframework.stereotype.Service;
 9 
10 import java.util.HashMap;
11 import java.util.List;
12 import java.util.Map;
13 
14 @Service
15 public class StudentServiceImpl implements StudentService {
16     @Autowired
17     private StudentRepository studentRepository;
18 
19     @Value("${server.port}")
20     private String port;
21 
22     @Override
23     public void save(Student student) {
24         studentRepository.save(student);
25     }
26 
27     @Override
28     public Student findById(Integer id) {
29         return studentRepository.findOne(id);
30     }
31 
32     @Override
33     public List<Student> list() {
34         return studentRepository.findAll();
35     }
36 
37     @Override
38     public void delete(Integer id) {
39         studentRepository.delete(id);
40     }
41 
42     @Override
43     public Map<String, Object> hystrix() {
44         Map<String,Object> map=new HashMap<String,Object>();
45         map.put("code", 200);
46         map.put("info","工号【"+port+"】正在为您服务");
47         return map;
48     }
49 }

这类我们实现了降级处理方法实现；

3、microservice-student-consumer-feign-80修改支持Hystrix

StudentConsumerFeignController新增方法调用

1 /**
2  * Feign整合Hystrix服务熔断降级
3  * @return
4  * @throws InterruptedException
5  */
6 @GetMapping(value="/hystrix")
7 public Map<String,Object> hystrix() throws InterruptedException{
8     return studentClientService.hystrix();
9 }

microservice-student-consumer-feign-80的application.yml加上hystrix支持

 1 server:
 2   port: 81
 3   context-path: /
 4 eureka:
 5   client:
 6     service-url:
 7       defaultZone: http://eureka2001.yuan.com:2001/eureka/,http://eureka2002.yuan.com:2002/eureka/,http://eureka2003.yuan.com:2003/eureka/
 8     register-with-eureka: false
 9 feign:
10   hystrix:
11     enabled: true
12 ribbon:
13   ReadTimeout: 10000
14   ConnectTimeout: 9000

1、microservice-student-consumer-feign-80的启动类上添加公共模块

@ComponentScan(basePackages = {"com.javaxl.microservicecommon","com.javaxl.microservicestudentconsumerfeign80"})

注意：

公共子项目与当前子项目的基包都要扫描到；

只指定公共子模块为基包会导致本子项目的springmvc功能失效；

只指定本子项目为基包会导致feign与Hystrix集成失败，从而导致服务熔断功能失效

 1 package com.yuan.microservicestudentconsumerfeign80;
 2 
 3 import org.springframework.boot.SpringApplication;
 4 import org.springframework.boot.autoconfigure.SpringBootApplication;
 5 import org.springframework.boot.autoconfigure.jdbc.DataSourceAutoConfiguration;
 6 import org.springframework.boot.autoconfigure.orm.jpa.HibernateJpaAutoConfiguration;
 7 import org.springframework.cloud.netflix.eureka.EnableEurekaClient;
 8 import org.springframework.cloud.netflix.feign.EnableFeignClients;
 9 import org.springframework.context.annotation.ComponentScan;
10 
11 @ComponentScan(basePackages = {"com.yuan.microservicecommon","com.yuan.microservicestudentconsumerfeign80"})//扫描公共模块
12 @EnableFeignClients(value = "com.yuan.*.*")
13 @EnableEurekaClient
14 @SpringBootApplication(exclude={DataSourceAutoConfiguration.class, HibernateJpaAutoConfiguration.class})
15 public class MicroserviceStudentConsumerFeign80Application {
16 
17     public static void main(String[] args) {
18         SpringApplication.run(MicroserviceStudentConsumerFeign80Application.class, args);
19     }
20 
21 }

运行结果

谢谢观看！！！

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原文地址：https://www.cnblogs.com/ly-0919/p/12031161.html