Nepxion Discovery(1) 全链路蓝绿发布

矫情吗；* 2023-01-10 11:50 160阅读 0赞

### 一、前言 ###

> [https://github.com/Nepxion/Discovery][https_github.com_Nepxion_Discovery]

Discovery【探索】微服务框架，基于Spring Cloud & Spring Cloud Alibaba，Discovery服务注册发现、Ribbon负载均衡、Feign和RestTemplate调用、Spring Cloud Gateway和Zuul过滤等组件全方位增强的企业级微服务开源解决方案，更贴近企业级需求，更具有企业级的插件引入、开箱即用特征…

### 二、环境准备 ###

1.  运行nacos服务
    
    > 基于docker环境运行nacos可参考：[https://gitee.com/zhengqingya/docker-compose][https_gitee.com_zhengqingya_docker-compose]
2.  下载代码：[https://github.com/Nepxion/DiscoveryGuide][https_github.com_Nepxion_DiscoveryGuide] (注：用simple分支)
    
    > 温馨小提示：如果依赖下载不了，尝试将`discovery`版本修改为`6.5.0`  
    > 也可直接用小编的代码：[https://gitee.com/zhengqingya/java-workspace][https_gitee.com_zhengqingya_java-workspace]
3.  代码导入idea中启动运行所需服务
    
    > ![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3FxXzM4MjI1NTU4_size_16_color_FFFFFF_t_70]
4.  ① 访问测试 [http://127.0.0.1:5001/discovery-guide-service-a/invoke/gateway][http_127.0.0.1_5001_discovery-guide-service-a_invoke_gateway]  
    ② 访问测试 [http://127.0.0.1:5002/discovery-guide-service-a/invoke/zuul][http_127.0.0.1_5002_discovery-guide-service-a_invoke_zuul]

### 三、全链路蓝绿发布 ###

> **经典场景**：当调用请求从网关或者服务发起的时候，通过`Header` | `Parameter` | `Cookie`一种或者几种参数进行驱动，在路由过滤中，根据这些参数，选择在配置中心配置的`蓝路由` | `绿路由` | `兜底路由`的规则策略（Json格式），并把命中的规则策略转化为策略路由Header（n-d-开头），实现全链路传递。每个端到端服务接收到策略路由Header后，执行负载均衡时，该Header跟注册中心的对应元数据进行相关比较，不符合条件的实例进行过滤，从而实现全链路蓝绿发布

> **实施概要**：只涉及当前正在发布的服务，例如，对于 `〔网关〕`\->`〔A服务〕`\->`〔B服务〕`\->`〔C服务〕`\->`〔D服务〕`调用链来说，如果当前只是B服务和C服务正在实施发布，那么，只需要把B服务和C服务配置到规则策略中，其它则不需要配置。发布结束后，即B服务和C服务的所有实例都完全一致，例如，版本号都只有唯一一个，那么清除掉在配置中心配置的规则策略即可，从而进行下一轮全链路蓝绿发布

![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3FxXzM4MjI1NTU4_size_16_color_FFFFFF_t_70 1]

#### 1、全链路`版本匹配`蓝绿发布 ####

![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3FxXzM4MjI1NTU4_size_16_color_FFFFFF_t_70 2]

nacos中增加Spring Cloud Gateway的版本匹配蓝绿发布策略配置  
![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3FxXzM4MjI1NTU4_size_16_color_FFFFFF_t_70 3]

<table> 
 <thead> 
  <tr> 
   <th></th> 
   <th></th> 
  </tr> 
 </thead> 
 <tbody> 
  <tr> 
   <td>Data ID</td> 
   <td>discovery-guide-gateway</td> 
  </tr> 
  <tr> 
   <td>Group</td> 
   <td>discovery-guide-group</td> 
  </tr> 
  <tr> 
   <td>配置格式</td> 
   <td>XML</td> 
  </tr> 
 </tbody> 
</table>

![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3FxXzM4MjI1NTU4_size_16_color_FFFFFF_t_70 4]

###### 策略①-`每个服务的版本统一指定`: 从Spring Cloud Gateway发起的`调用全链路`都走`1.0`版本服务，配置内容如下 ######

<?xml version="1.0" encoding="UTF-8"?>
    <rule>
        <strategy>
            <version>1.0</version>
        </strategy>
    </rule>

访问测试 [http://127.0.0.1:5001/discovery-guide-service-a/invoke/gateway][http_127.0.0.1_5001_discovery-guide-service-a_invoke_gateway]

![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3FxXzM4MjI1NTU4_size_16_color_FFFFFF_t_70 5]

###### 策略②-`每个服务的版本分别指定`: 从Spring Cloud Gateway发起的调用走`1.0版本的a服务` \-> `走1.1版本的b服务`，配置内容如下 ######

<?xml version="1.0" encoding="UTF-8"?>
    <rule>
        <strategy>
            <version>{"discovery-guide-service-a":"1.0", "discovery-guide-service-b":"1.1"}</version>
        </strategy>
    </rule>

![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3FxXzM4MjI1NTU4_size_16_color_FFFFFF_t_70 6]

如果上述表达式还未满足需求，可以采用`通配表达式`方式

* - 表示调用范围为所有版本
    1.* - 表示调用范围为1开头的所有版本

ex：

<?xml version="1.0" encoding="UTF-8"?>
    <rule>
        <strategy>
            <version>{"discovery-guide-service-a":"1.0*", "discovery-guide-service-b":"1.?"}</version>
        </strategy>
    </rule>

#### 2、全链路`区域匹配`蓝绿发布 ####

![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3FxXzM4MjI1NTU4_size_16_color_FFFFFF_t_70 7]

nacos中增加Zuul的区域匹配蓝绿发布策略配置

<table> 
 <thead> 
  <tr> 
   <th></th> 
   <th></th> 
  </tr> 
 </thead> 
 <tbody> 
  <tr> 
   <td>Data ID</td> 
   <td>discovery-guide-zuul</td> 
  </tr> 
  <tr> 
   <td>Group</td> 
   <td>discovery-guide-group</td> 
  </tr> 
  <tr> 
   <td>配置格式</td> 
   <td>XML</td> 
  </tr> 
 </tbody> 
</table>

![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3FxXzM4MjI1NTU4_size_16_color_FFFFFF_t_70 8]

###### 策略①-`每个服务的区域统一指定`: 从Zuul发起的`调用全链路`都走`dev区域`服务，配置内容如下 ######

<?xml version="1.0" encoding="UTF-8"?>
    <rule>
        <strategy>
            <region>dev</region>
        </strategy>
    </rule>

访问测试 [http://127.0.0.1:5002/discovery-guide-service-a/invoke/zuul][http_127.0.0.1_5002_discovery-guide-service-a_invoke_zuul]

![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3FxXzM4MjI1NTU4_size_16_color_FFFFFF_t_70 9]

###### 策略②-`每个服务的区域分别指定`: 从Zuul发起的调用走`dev区域的a服务` \-> `走qa区域的b服务`，配置内容如下 ######

<?xml version="1.0" encoding="UTF-8"?>
    <rule>
        <strategy>
            <region>{"discovery-guide-service-a":"dev", "discovery-guide-service-b":"qa"}</region>
        </strategy>
    </rule>

![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3FxXzM4MjI1NTU4_size_16_color_FFFFFF_t_70 10]

如果上述表达式还未满足需求，可以采用`通配表达式`方式

* - 表示调用范围为所有区域
    d* - 表示调用范围为d开头的所有区域

ex：

<?xml version="1.0" encoding="UTF-8"?>
    <rule>
        <strategy>
            <region>{"discovery-guide-service-a":"d*;q?", "discovery-guide-service-b":"dev"}</region>
        </strategy>
    </rule>

#### 3、全链路`IP地址和端口匹配`蓝绿发布 ####

![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3FxXzM4MjI1NTU4_size_16_color_FFFFFF_t_70 11]

nacos中增加Zuul的IP地址和端口匹配蓝绿发布策略配置

###### 策略①-`每个服务的IP地址或端口统一指定`: 从Zuul发起的调用走`指定IP地址和端口`/`IP地址`/`端口`，配置内容如下 ######

<?xml version="1.0" encoding="UTF-8"?>
    <rule>
        <strategy>
            
            
            <address>192.168.0.111</address>
            
        </strategy>
    </rule>

访问测试 [http://127.0.0.1:5002/discovery-guide-service-a/invoke/zuul][http_127.0.0.1_5002_discovery-guide-service-a_invoke_zuul]  
![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3FxXzM4MjI1NTU4_size_16_color_FFFFFF_t_70 12]

###### 策略②-`每个服务的IP地址或端口分别指定`: 从Zuul发起的调用走`3001端口的a服务`\->`走4001端口的b服务`，配置内容如下 ######

<?xml version="1.0" encoding="UTF-8"?>
    <rule>
        <strategy>
            <address>{"discovery-guide-service-a":"3002", "discovery-guide-service-b":"4001"}</address>
        </strategy>
    </rule>

![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3FxXzM4MjI1NTU4_size_16_color_FFFFFF_t_70 13]

如果上述表达式还未满足需求，可以采用`通配表达式`方式

* - 表示调用范围为所有端口
    3* - 表示调用范围为3开头的所有端口

ex：

<?xml version="1.0" encoding="UTF-8"?>
    <rule>
        <strategy>
            <address>{"discovery-guide-service-a":"3*;400?", "discovery-guide-service-b":"4001"}</address>
        </strategy>
    </rule>

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

> 今日分享语句：  
> 我发现，一个人在放弃给别人留好印象的负担之后，原来心里会如此踏实。

[https_github.com_Nepxion_Discovery]: https://github.com/Nepxion/Discovery
[https_gitee.com_zhengqingya_docker-compose]: https://gitee.com/zhengqingya/docker-compose
[https_github.com_Nepxion_DiscoveryGuide]: https://github.com/Nepxion/DiscoveryGuide
[https_gitee.com_zhengqingya_java-workspace]: https://gitee.com/zhengqingya/java-workspace
[watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3FxXzM4MjI1NTU4_size_16_color_FFFFFF_t_70]: /images/20221119/5f6e699b3a7e4e788e60f967e4ac696d.png
[http_127.0.0.1_5001_discovery-guide-service-a_invoke_gateway]: http://127.0.0.1:5001/discovery-guide-service-a/invoke/gateway
[http_127.0.0.1_5002_discovery-guide-service-a_invoke_zuul]: http://127.0.0.1:5002/discovery-guide-service-a/invoke/zuul
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