Spring Cloud Config 整合Spring Cloud Bus以及使用WebHooks 实现自动更新

绝地灬酷狼 2022-03-15 12:47 215阅读 0赞

## 版本真的很重要！！！ ##

## 整合config和bus 期间我遇到以下问题： ##

1. spring cloud 版本和spring boot版本不兼容，有些类找不到，以至于启动不了

2. 使用spring-cloud-starter-bus-amqp时，使用bus-refresh时没有互相推送，actuator的接口没有对外暴露

3. 使用WebHooks将git文件修改推送到 xxx/actuator/bus/refresh上，报了400

## 下面就到了 show code： ##

首先我使用的spring cloud version : GreenWich.RC2   ;spring boot version : 2.1.3.RELEASE

重点说下bus-refresh地址： 一定不要错，国内很多调用信息都是老版本

参考官网：[https://cloud.spring.io/spring-cloud-bus/single/spring-cloud-bus.html\#\_bus\_refresh\_endpoint][https_cloud.spring.io_spring-cloud-bus_single_spring-cloud-bus.html_bus_refresh_endpoint]

curl -v -X POST "http://localhost:9001/actuator/bus-refresh"

**先贴 config server端的 yml:  **

spring:
      application:
        name: config
      cloud:
        config:
          server:
            git:
              uri: https://gitee.com/xxx/xxx
              username: xxx
              password: xxx
              basedir: C:/Users/xie87/Desktop/repo/
    eureka:
      client:
        service-url:
          defaultZone: http://localhost:8761/eureka
    management:
      endpoints:
        web:
          exposure:
            include: "*"  #为了暴露actuator的接口

config server的依赖：（actuator 用来监控和刷新）

<dependency>
      <groupId>org.springframework.boot</groupId>
      <artifactId>spring-boot-starter-actuator</artifactId>
     </dependency>
    <dependency>
      <groupId>org.springframework.cloud</groupId>
      <artifactId>spring-cloud-starter-bus-amqp</artifactId>
    </dependency>
    <dependency>
       <groupId>org.springframework.cloud</groupId>
       <artifactId>spring-cloud-config-server</artifactId>
    </dependency>
    <dependency>
      <groupId>org.springframework.cloud</groupId>
      <artifactId>spring-cloud-starter-netflix-eureka-client</artifactId>
    </dependency>

config server端的代码

@SpringBootApplication
    @EnableDiscoveryClient
    @EnableConfigServer
    public class ConfigApplication {
        run..
    }

写一个过滤器，过滤掉下面的这个请求，为了让**WebHooks正常发送请求**

/actuator/bus-refresh

随便找了一个过滤器，代码附上

package com.seller.config;
    
    import java.io.BufferedReader;
    import java.io.ByteArrayInputStream;
    import java.io.IOException;
    import javax.servlet.Filter;
    import javax.servlet.FilterChain;
    import javax.servlet.FilterConfig;
    import javax.servlet.ReadListener;
    import javax.servlet.ServletException;
    import javax.servlet.ServletInputStream;
    import javax.servlet.ServletRequest;
    import javax.servlet.ServletResponse;
    import javax.servlet.http.HttpServletRequest;
    import javax.servlet.http.HttpServletRequestWrapper;
    import javax.servlet.http.HttpServletResponse;
    import org.springframework.stereotype.Component;
    
    /**
     * 过滤器
     */
    @Component
    public class UrlFilter implements Filter {
      @Override
      public void init(FilterConfig filterConfig) throws ServletException {
    
      }
    
      @Override
      public void doFilter(ServletRequest request, ServletResponse response, FilterChain chain) throws IOException, ServletException {
        HttpServletRequest httpServletRequest = (HttpServletRequest)request;
        HttpServletResponse httpServletResponse = (HttpServletResponse)response;
    
        String url = new String(httpServletRequest.getRequestURI());
    
        //只过滤/actuator/bus-refresh请求
        if (!url.endsWith("/actuator/bus-refresh")) {
          chain.doFilter(request, response);
          return;
        }
    
        //获取原始的body
        String body = readAsChars(httpServletRequest);
    
        System.out.println("original body:   "+ body);
    
        //使用HttpServletRequest包装原始请求达到修改post请求中body内容的目的
        CustometRequestWrapper requestWrapper = new CustometRequestWrapper(httpServletRequest);
    
        chain.doFilter(requestWrapper, response);
    
      }
    
      @Override
      public void destroy() {
    
      }
    
      private class CustometRequestWrapper extends HttpServletRequestWrapper {
        public CustometRequestWrapper(HttpServletRequest request) {
          super(request);
        }
    
        @Override
        public ServletInputStream getInputStream() throws IOException {
          byte[] bytes = new byte[0];
          ByteArrayInputStream byteArrayInputStream = new ByteArrayInputStream(bytes);
    
          return new ServletInputStream() {
            @Override
            public boolean isFinished() {
              return byteArrayInputStream.read() == -1 ? true:false;
            }
    
            @Override
            public boolean isReady() {
              return false;
            }
    
            @Override
            public void setReadListener(ReadListener readListener) {
    
            }
    
            @Override
            public int read() throws IOException {
              return byteArrayInputStream.read();
            }
          };
        }
      }
    
      public static String readAsChars(HttpServletRequest request)
      {
    
        BufferedReader br = null;
        StringBuilder sb = new StringBuilder("");
        try
        {
          br = request.getReader();
          String str;
          while ((str = br.readLine()) != null)
          {
            sb.append(str);
          }
          br.close();
        }
        catch (IOException e)
        {
          e.printStackTrace();
        }
        finally
        {
          if (null != br)
          {
            try
            {
              br.close();
            }
            catch (IOException e)
            {
              e.printStackTrace();
            }
          }
        }
        return sb.toString();
      }
    }

order的yml:

spring:
      application:
        name: order
      cloud:
        config:
          discovery:
            enabled: true
            service-id: CONFIG
          profile: dev
    eureka:
      client:
        service-url:
          defaultZone: http://eureka1:8761/eureka/
    management:
      endpoints:
        web:
          exposure:
            include:  bus-refresh # 暴露bus-refresh为了接到通知

客户端order的pom：（核心包）

<dependency>
       <groupId>org.springframework.boot</groupId>
       <artifactId>spring-boot-starter-actuator</artifactId>
    </dependency>
    <dependency>
       <groupId>org.springframework.cloud</groupId>
       <artifactId>spring-cloud-config-client</artifactId>
    </dependency>
    <dependency>
        <groupId>org.springframework.cloud</groupId>
        <artifactId>spring-cloud-starter-bus-amqp</artifactId>
    </dependency>

order代码;

@SpringBootApplication
    @EnableDiscoveryClient
    public class OrderApplication {
        run..
    }

测试接口

@RestController
    @RefreshScope
    public class TestController {
      @Value("${name}")
      private String name;
    
      @GetMapping("/print")
      public String print() {
        return name;
      }
    
    }

下面看gitee 仓库，name: very good!!

![watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3FxXzM4NDIzMTA1_size_16_color_FFFFFF_t_70][]

调用接口：

![20190302202238748.png][]

### 1. 修改文件值 ###

![20190302202321792.png][]

### 2.gitee WebHook推送了信息: ###

![20190302202432859.png][]

### 3.本地config server 端刷新了日志 ###

![20190302202359668.png][]

### 4.order端接受到修改信息,解析，重新获取，局部刷新 ###

2019-03-02 20:23:19.839  INFO 12028 --- [jSNlPxJXhyu1w-1] trationDelegate$BeanPostProcessorChecker : Bean 'org.springframework.cloud.autoconfigure.ConfigurationPropertiesRebinderAutoConfiguration' of type [org.springframework.cloud.autoconfigure.ConfigurationPropertiesRebinderAutoConfiguration$$EnhancerBySpringCGLIB$$164481ed] is not eligible for getting processed by all BeanPostProcessors (for example: not eligible for auto-proxying)
    2019-03-02 20:23:20.741  INFO 12028 --- [jSNlPxJXhyu1w-1] o.s.c.n.eureka.InstanceInfoFactory       : Setting initial instance status as: STARTING
    2019-03-02 20:23:20.746  INFO 12028 --- [jSNlPxJXhyu1w-1] com.netflix.discovery.DiscoveryClient    : Initializing Eureka in region us-east-1
    2019-03-02 20:23:20.749  INFO 12028 --- [jSNlPxJXhyu1w-1] c.n.d.provider.DiscoveryJerseyProvider   : Using JSON encoding codec LegacyJacksonJson
    2019-03-02 20:23:20.749  INFO 12028 --- [jSNlPxJXhyu1w-1] c.n.d.provider.DiscoveryJerseyProvider   : Using JSON decoding codec LegacyJacksonJson
    2019-03-02 20:23:20.749  INFO 12028 --- [jSNlPxJXhyu1w-1] c.n.d.provider.DiscoveryJerseyProvider   : Using XML encoding codec XStreamXml
    2019-03-02 20:23:20.749  INFO 12028 --- [jSNlPxJXhyu1w-1] c.n.d.provider.DiscoveryJerseyProvider   : Using XML decoding codec XStreamXml
    2019-03-02 20:23:20.915  INFO 12028 --- [jSNlPxJXhyu1w-1] c.n.d.s.r.aws.ConfigClusterResolver      : Resolving eureka endpoints via configuration
    2019-03-02 20:23:20.917  INFO 12028 --- [jSNlPxJXhyu1w-1] com.netflix.discovery.DiscoveryClient    : Disable delta property : false
    2019-03-02 20:23:20.917  INFO 12028 --- [jSNlPxJXhyu1w-1] com.netflix.discovery.DiscoveryClient    : Single vip registry refresh property : null
    2019-03-02 20:23:20.917  INFO 12028 --- [jSNlPxJXhyu1w-1] com.netflix.discovery.DiscoveryClient    : Force full registry fetch : false
    2019-03-02 20:23:20.917  INFO 12028 --- [jSNlPxJXhyu1w-1] com.netflix.discovery.DiscoveryClient    : Application is null : false
    2019-03-02 20:23:20.917  INFO 12028 --- [jSNlPxJXhyu1w-1] com.netflix.discovery.DiscoveryClient    : Registered Applications size is zero : true
    2019-03-02 20:23:20.917  INFO 12028 --- [jSNlPxJXhyu1w-1] com.netflix.discovery.DiscoveryClient    : Application version is -1: true
    2019-03-02 20:23:20.917  INFO 12028 --- [jSNlPxJXhyu1w-1] com.netflix.discovery.DiscoveryClient    : Getting all instance registry info from the eureka server
    2019-03-02 20:23:20.924  INFO 12028 --- [jSNlPxJXhyu1w-1] com.netflix.discovery.DiscoveryClient    : The response status is 200
    2019-03-02 20:23:20.924  INFO 12028 --- [jSNlPxJXhyu1w-1] com.netflix.discovery.DiscoveryClient    : Not registering with Eureka server per configuration
    2019-03-02 20:23:20.924  INFO 12028 --- [jSNlPxJXhyu1w-1] com.netflix.discovery.DiscoveryClient    : Discovery Client initialized at timestamp 1551529400924 with initial instances count: 2
    2019-03-02 20:23:21.548  INFO 12028 --- [jSNlPxJXhyu1w-1] c.c.c.ConfigServicePropertySourceLocator : Fetching config from server at : http://DESKTOP-2N9C4AE:9001/
    2019-03-02 20:23:23.276  INFO 12028 --- [jSNlPxJXhyu1w-1] c.c.c.ConfigServicePropertySourceLocator : Located environment: name=order, profiles=[dev], label=null, version=76e1c9035d8d89d0c545e2e24130904ff43d4ef6, state=null
    2019-03-02 20:23:23.276  INFO 12028 --- [jSNlPxJXhyu1w-1] b.c.PropertySourceBootstrapConfiguration : Located property source: CompositePropertySource {name='configService', propertySources=[MapPropertySource {name='configClient'}, MapPropertySource {name='https://gitee.com/xiechenxuyuan/SpringCouldConfig/order-dev.yml'}]}
    2019-03-02 20:23:23.278  INFO 12028 --- [jSNlPxJXhyu1w-1] o.s.boot.SpringApplication               : No active profile set, falling back to default profiles: default
    2019-03-02 20:23:23.289  INFO 12028 --- [jSNlPxJXhyu1w-1] o.s.boot.SpringApplication               : Started application in 4.941 seconds (JVM running for 189.325)
    2019-03-02 20:23:23.289  INFO 12028 --- [jSNlPxJXhyu1w-1] com.netflix.discovery.DiscoveryClient    : Shutting down DiscoveryClient ...
    2019-03-02 20:23:23.292  INFO 12028 --- [jSNlPxJXhyu1w-1] com.netflix.discovery.DiscoveryClient    : Completed shut down of DiscoveryClient
    2019-03-02 20:23:23.431  INFO 12028 --- [jSNlPxJXhyu1w-1] com.netflix.discovery.DiscoveryClient    : Shutting down DiscoveryClient ...
    2019-03-02 20:23:23.835  INFO 12028 --- [jSNlPxJXhyu1w-1] com.netflix.discovery.DiscoveryClient    : Unregistering ...

### 5.查看页面，数据已刷新 ###

![2019030220293982.png][]

--------------------

Studies this matter,lacks the time ,but is lacks diligently。

学习这件事，不是缺乏时间，而是缺乏努力。

[https_cloud.spring.io_spring-cloud-bus_single_spring-cloud-bus.html_bus_refresh_endpoint]: https://cloud.spring.io/spring-cloud-bus/single/spring-cloud-bus.html#_bus_refresh_endpoint
[watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3FxXzM4NDIzMTA1_size_16_color_FFFFFF_t_70]: /images/20220315/da6e4df5b77a417b8aa694d90ff32856.png
[20190302202238748.png]: /images/20220315/f69dc93847d14d17927e6c0c1f91fd91.png
[20190302202321792.png]: /images/20220315/e49d99e4cb45420bbb10ccf3aafcf356.png
[20190302202432859.png]: /images/20220315/e8923dd446a8407598643b1d3b0f1be1.png
[20190302202359668.png]: /images/20220315/c39195e0c7ad4e998dacf0b5ead2c981.png
[2019030220293982.png]: /images/20220315/167f4cc61e674b979185579a83cc5468.png