微服務之springCloud-config-bus(十三)

簡介java

當咱們的業務系統愈來愈龐大複雜的時候，各類配置就會層出不羣。一旦配置修改了，那麼咱們就是必須修改後停服務，而後再上線，若是服務少，咱們能夠手動來操做，若是是成千上百的服務，若是是手動操做，確定就不合適宜了，而後SpringCloudConfig就出來了，就是咱們一般意義上的配置中心，把應用本來放在本地文件的配置抽取出來放在中心服務器，從而可以提供更好的管理、發佈能力。git

SpringCloudConfig分服務端和客戶端，服務端負責將git（svn或本地文件系統）中存儲的配置文件發佈成REST接口，客戶端能夠從服務端REST接口獲取配置。但客戶端並不能主動感知到配置的變化，從而主動去獲取新的配置，這須要每一個客戶端經過POST方法觸發各自的/refresh。web

SpringCloudBus經過一個輕量級消息代理鏈接分佈式系統的節點。這能夠用於廣播狀態更改（如配置更改）或其餘管理指令。SpringCloudBus提供了經過POST方法訪問的endpoint/bus/refresh，這個接口一般由git的webhook功能調用，用以通知各個SpringCloudConfig的客戶端去服務端更新配置，本節就講怎麼搭建一套自動刷新的spring cloud configspring

1、建立模塊docker

模塊結構以下：apache

2、maven聚合模塊microservice-config的pom.xml文件bootstrap

<?xml version="1.0" encoding="UTF-8"?>
<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
    <parent>
        <groupId>org.springframework.boot</groupId>
        <artifactId>spring-boot-starter-parent</artifactId>
        <version>1.4.5.RELEASE</version>
    </parent>
    <modelVersion>4.0.0</modelVersion>
    <groupId>com.jacky</groupId>
    <artifactId>miroservice-config</artifactId>
    <packaging>pom</packaging>
    <version>1.0-SNAPSHOT</version>
    <modules>
        <module>microservice-config-server</module>
        <module>microservice-config-eureka</module>
        <module>microservice-config-client</module>
    </modules>

    <properties>
        <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
        <project.reporting.outputEncoding>UTF-8</project.reporting.outputEncoding>
        <java.version>1.8</java.version>
        <docker.image.prefix>jacky</docker.image.prefix><!--配置鏡像倉庫的屬性-->
        <docker.repostory>192.168.6.132:5000</docker.repostory><!--配置鏡像倉庫的對應的地址與端口-->
    </properties>

    <dependencyManagement>
        <dependencies>
            <dependency>
                <groupId>org.springframework.cloud</groupId>
                <artifactId>spring-cloud-dependencies</artifactId>
                <version>Camden.SR7</version>
                <type>pom</type>
                <scope>import</scope>
            </dependency>
        </dependencies>
    </dependencyManagement>

    <build>
        <plugins>
            <plugin>
                <groupId>org.springframework.boot</groupId>
                <artifactId>spring-boot-maven-plugin</artifactId>
            </plugin>
        </plugins>
        <!--添加利用maven插件構建docker鏡像的插件依賴-->
        <pluginManagement>
            <plugins>
                <plugin>
                    <groupId>com.spotify</groupId>
                    <artifactId>docker-maven-plugin</artifactId>
                    <version>0.4.13</version>
                </plugin>
            </plugins>
        </pluginManagement>
    </build>

</project>

3、配置中心模塊（microservice-config-eureka）api

3.一、pom.xml安全

<?xml version="1.0" encoding="UTF-8"?>
<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
    <parent>
        <artifactId>miroservice-config</artifactId>
        <groupId>com.jacky</groupId>
        <version>1.0-SNAPSHOT</version>
    </parent>
    <modelVersion>4.0.0</modelVersion>

    <artifactId>microservice-config-eureka</artifactId>
    <packaging>jar</packaging>
    <properties>
        <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
    </properties>

    <dependencies>
        <dependency>
            <groupId>org.springframework.cloud</groupId>
            <artifactId>spring-cloud-starter-eureka-server</artifactId>
        </dependency>
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-security</artifactId>
        </dependency>
    </dependencies>

    <build>
        <plugins>
            <plugin>
                <groupId>com.spotify</groupId>
                <artifactId>docker-maven-plugin</artifactId>
                <executions>
                    <!--設置在執行maven 的install時構建鏡像-->
                    <execution>
                        <id>build-image</id>
                        <phase>install</phase>
                        <goals>
                            <goal>build</goal>
                        </goals>
                    </execution>
                </executions>
                <configuration>
                    <!--安裝了docker的主機，而且打開了api remote接口設置-->
                    <dockerHost>http://192.168.6.130:5678</dockerHost>
                    <pushImage>true</pushImage><!--設置上傳鏡像到私有倉庫，須要docker設置指定私有倉庫地址-->
                    <!--鏡像名稱-->
                    <imageName>${docker.repostory}/${docker.image.prefix}/${project.artifactId}:${project.version}</imageName>
                    <!--鏡像的基礎版本-->
                    <baseImage>java:openjdk-8-jdk-alpine</baseImage>
                    <!--鏡像啓動參數-->
                    <entryPoint>["java", "-jar", "/${project.build.finalName}.jar"]</entryPoint>
                    <resources>
                        <resource>
                            <targetPath>/</targetPath>
                            <directory>${project.build.directory}</directory>
                            <include>${project.build.finalName}.jar</include>
                        </resource>
                    </resources>
                </configuration>
            </plugin>
        </plugins>
    </build>
</project>

3.二、application.yml服務器

spring: application: name: microservice-config-server security: basic: enabled: true user: name: jacky password: admin server: port: 9511 eureka: client: register-with-eureka: false fetch-registry: false service-url: defaultZone: http://jacky:admin@localhost:9511/eureka

3.三、啓動類EurekaApplication.java

package com.jacky.cloud; import org.springframework.boot.SpringApplication; import org.springframework.boot.autoconfigure.SpringBootApplication; import org.springframework.cloud.netflix.eureka.server.EnableEurekaServer; @SpringBootApplication @EnableEurekaServer public class EurekaApplication { public static void main(String[] args) { SpringApplication.run(EurekaApplication.class, args); } }

4、配置中心服務端（microservice-config-server）

4.一、pom.xml文件

<?xml version="1.0" encoding="UTF-8"?>
<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
    <parent>
        <artifactId>miroservice-config</artifactId>
        <groupId>com.jacky</groupId>
        <version>1.0-SNAPSHOT</version>
    </parent>
    <modelVersion>4.0.0</modelVersion>

    <artifactId>microservice-config-server</artifactId>
    <packaging>jar</packaging>

    <properties>
        <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
    </properties>

    <dependencies>
        <dependency>
            <groupId>org.springframework.cloud</groupId>
            <artifactId>spring-cloud-config-server</artifactId>
        </dependency>
        <dependency>
            <groupId>org.springframework.cloud</groupId>
            <artifactId>spring-cloud-starter-eureka</artifactId>
        </dependency>
        <dependency>
            <groupId>org.springframework.cloud</groupId>
            <artifactId>spring-cloud-starter-bus-amqp</artifactId>
        </dependency>
        <!--配置認證所須要的包-->
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-security</artifactId>
        </dependency>
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-actuator</artifactId>
        </dependency>
    </dependencies>

    <build>
        <plugins>
            <plugin>
                <groupId>com.spotify</groupId>
                <artifactId>docker-maven-plugin</artifactId>
                <executions>
                    <!--設置在執行maven 的install時構建鏡像-->
                    <execution>
                        <id>build-image</id>
                        <phase>install</phase>
                        <goals>
                            <goal>build</goal>
                        </goals>
                    </execution>
                </executions>
                <configuration>
                    <!--安裝了docker的主機，而且打開了api remote接口設置-->
                    <dockerHost>http://192.168.6.130:5678</dockerHost>
                    <pushImage>true</pushImage><!--設置上傳鏡像到私有倉庫，須要docker設置指定私有倉庫地址-->
                    <!--鏡像名稱-->
                    <imageName>${docker.repostory}/${docker.image.prefix}/${project.artifactId}:${project.version}</imageName>
                    <!--鏡像的基礎版本-->
                    <baseImage>java:openjdk-8-jdk-alpine</baseImage>
                    <!--鏡像啓動參數-->
                    <entryPoint>["java", "-jar", "/${project.build.finalName}.jar"]</entryPoint>
                    <resources>
                        <resource>
                            <targetPath>/</targetPath>
                            <directory>${project.build.directory}</directory>
                            <include>${project.build.finalName}.jar</include>
                        </resource>
                    </resources>
                </configuration>
            </plugin>
        </plugins>
    </build>

</project>

4.二、application.yml文件

server: port: 9518 eureka: instance: prefer-ip-address: true # 開啓健康檢查（須要spring-boot-starter-actuator依賴） lease-expiration-duration-in-seconds: 90 #續約到期時間(單位 S)默認是90S lease-renewal-interval-in-seconds: 30 # 續約更新時間間隔（默認30秒） instance-id: ${spring.application.name}:${spring.cloud.client.ipAddress}:${spring.application.instance_id:${server.port}} client: serviceUrl: defaultZone: http://jacky:admin@localhost:9511/eureka/ #把configservice註冊到eureka上，以便於客戶端經過eureka上註冊的信息找到configservice #實現的基本的 HttpBasic 的認證 security: basic: enabled: true # 開啓基於HTTP basic的認證 user: name: jacky123 # 配置登陸的帳號 password: admin123 # 配置登陸的密碼 # spring: application: name: microservice-config-service cloud: config: server: git: uri: http://git.oschina.net/jacky-lulu/microservice-config-repo #配置git倉庫位置 clone-on-start: true #在啓動的時候克隆倉庫 search-paths: '{application}' #配置倉庫路徑下的相對搜索位置，能夠配置多個 username: myuser #填寫git倉庫的用戶名 password: mypass #填寫git倉庫的密碼 rabbitmq: host: 192.168.6.130 port: 5672 username: myuser password: mypass

4.三、啓動類ConfigServerApplication.java

package com.jacky.cloud; import org.springframework.boot.SpringApplication; import org.springframework.boot.autoconfigure.SpringBootApplication; import org.springframework.cloud.client.discovery.EnableDiscoveryClient; import org.springframework.cloud.config.server.EnableConfigServer; @SpringBootApplication @EnableDiscoveryClient @EnableConfigServer public class ConfigServerApplication { public static void main(String[] args) { SpringApplication.run(ConfigServerApplication.class, args); } }

5、客戶端（microservice-config-client）

5.一、pom.xml配置文件

<?xml version="1.0" encoding="UTF-8"?>
<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
    <parent>
        <artifactId>miroservice-config</artifactId>
        <groupId>com.jacky</groupId>
        <version>1.0-SNAPSHOT</version>
    </parent>
    <modelVersion>4.0.0</modelVersion>

    <artifactId>microservice-config-client</artifactId>
    <packaging>jar</packaging>

    <properties>
        <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
    </properties>

    <dependencies>
        <dependency>
            <groupId>org.springframework.cloud</groupId>
            <artifactId>spring-cloud-starter-config</artifactId>
        </dependency>
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-web</artifactId>
        </dependency>

        <dependency>
            <groupId>org.springframework.cloud</groupId>
            <artifactId>spring-cloud-starter-eureka</artifactId>
        </dependency>

        <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>
    </dependencies>

    <build>
        <plugins>
            <plugin>
                <groupId>com.spotify</groupId>
                <artifactId>docker-maven-plugin</artifactId>
                <executions>
                    <!--設置在執行maven 的install時構建鏡像-->
                    <execution>
                        <id>build-image</id>
                        <phase>install</phase>
                        <goals>
                            <goal>build</goal>
                        </goals>
                    </execution>
                </executions>
                <configuration>
                    <!--安裝了docker的主機，而且打開了api remote接口設置-->
                    <dockerHost>http://192.168.6.130:5678</dockerHost>
                    <pushImage>true</pushImage><!--設置上傳鏡像到私有倉庫，須要docker設置指定私有倉庫地址-->
                    <!--鏡像名稱-->
                    <imageName>${docker.repostory}/${docker.image.prefix}/${project.artifactId}:${project.version}</imageName>
                    <!--鏡像的基礎版本-->
                    <baseImage>java:openjdk-8-jdk-alpine</baseImage>
                    <!--鏡像啓動參數-->
                    <entryPoint>["java", "-jar", "/${project.build.finalName}.jar"]</entryPoint>
                    <resources>
                        <resource>
                            <targetPath>/</targetPath>
                            <directory>${project.build.directory}</directory>
                            <include>${project.build.finalName}.jar</include>
                        </resource>
                    </resources>
                </configuration>
            </plugin>
        </plugins>
    </build>


</project>

5.二、application.yml文件

server: port: 8081

5.三、bootstrap.yml文件

spring: cloud: config: username: jacky123 #configservice認證的用戶名 password: admin123 #認證密碼 label: master # 倉庫的分支節點 discovery: enabled: true service-id: microservice-config-service profile: dev #倉庫中對應文件的環境，如dev、prod、test等 fail-fast: true bus: trace: enabled: true #開啓消息跟蹤 application: name: microservice-config-client rabbitmq: host: 192.168.6.130 port: 5672 username: myuser password: mypass eureka: client: serviceUrl: defaultZone: http://jacky:admin@localhost:9511/eureka instance: prefer-ip-address: true management: security: enabled: false #刷新時關閉安全認證

注意：

上面這些屬性必須配置在bootstrap.yml，服務端的配置內容才能正確加載。由於經過bootstrap.yml的加載優先級比配置中心的服務端的高，服務端加載優先於application.yml，因此若是你把上面的配置寫在application.yml中，至關於默認不是從配置中心的服務端中讀取的配置信息，而是spring boot的默認加載。啓動的時候就會看到加載的配置，不是配置中心得配置內容，而是默認的本地的

5.四、啓動類（ConfigClientApplication.java）

package com.jacky.cloud; import org.springframework.boot.SpringApplication; import org.springframework.boot.autoconfigure.SpringBootApplication; import org.springframework.cloud.client.discovery.EnableDiscoveryClient; @SpringBootApplication @EnableDiscoveryClient public class ConfigClientApplication { public static void main(String[] args) { SpringApplication.run(ConfigClientApplication.class, args); } }

5.五、控制層類（ConfigClientController.java）

package com.jacky.cloud.controller; import org.springframework.beans.factory.annotation.Value; import org.springframework.cloud.context.config.annotation.RefreshScope; import org.springframework.web.bind.annotation.GetMapping; import org.springframework.web.bind.annotation.RestController; @RefreshScope @RestController public class ConfigClientController { @Value("${profile}") private String profile; @GetMapping("/profile") public String getProfile() { return this.profile; } }

6、在碼雲建立git項目，放置配置文件

地址：https://gitee.com/jacky-lulu/microservice-config-repo

7、測試

7.一、http://localhost:9511/

7.二、http://localhost:9518/microservice-config-client/dev

7.三、http://localhost:8081/profile

如今把碼雲上的配置文件 microservice-config-client-dev.yml 改成

profile : helleWordDevUpdate

而後發送post請求到配置中心服務端 http://localhost:9518/bus/refresh

再次訪問客戶端

能夠看到自動刷新成功