Sofa Proxy

This document is intended to help the Sofa service access the Apache ShenYu gateway. The Apache ShenYu gateway uses the Sofa plugin to handle sofa service.

Before the connection, start shenyu-admin correctly, start Sofa plugin, and add related dependencies on the gateway and Sofa application client. Refer to the previous Quick start with Sofa .

For the use of the plugin, see：Sofa Plugin

For details about client access configuration, see Application Client Access Config .

For details about data synchronization configurations, see Data Synchronization Config .

Add sofa plugin in gateway

In the current version, this dependency has been introduced by default.

1. Add the following dependencies in the gateway's pom.xml file：

          <dependency>           <groupId>com.alipay.sofa</groupId>           <artifactId>sofa-rpc-all</artifactId>           <version>5.7.6</version>           <exclusions>               <exclusion>                   <groupId>net.jcip</groupId>                   <artifactId>jcip-annotations</artifactId>               </exclusion>           </exclusions>       </dependency>       <dependency>           <groupId>org.apache.curator</groupId>           <artifactId>curator-client</artifactId>           <version>4.0.1</version>       </dependency>       <dependency>           <groupId>org.apache.curator</groupId>           <artifactId>curator-framework</artifactId>           <version>4.0.1</version>       </dependency>       <dependency>           <groupId>org.apache.curator</groupId>           <artifactId>curator-recipes</artifactId>           <version>4.0.1</version>       </dependency>       <dependency>           <groupId>org.apache.shenyu</groupId>           <artifactId>shenyu-spring-boot-starter-plugin-sofa</artifactId>           <version>${project.version}</version>       </dependency>

2. Restart the gateway service.

Sofa service access gateway

Please refer to：shenyu-examples-sofa

1. Based on the springboot project，Introduce the following dependencies：

           <dependency>            <groupId>com.alipay.sofa</groupId>            <artifactId>rpc-sofa-boot-starter</artifactId>            <version>${rpc-sofa-boot-starter.version}</version>        </dependency>                <dependency>            <groupId>org.apache.shenyu</groupId>            <artifactId>shenyu-spring-boot-starter-client-sofa</artifactId>            <version>${shenyu.version}</version>        </dependency>

2. Configure in application.yml

com:  alipay:    sofa:      rpc:        registry-address: zookeeper://127.0.0.1:2181 # consul # nacos        bolt-port: 8888shenyu:  register:    registerType: http #zookeeper #etcd #nacos #consul    serverLists: http://localhost:9095 #localhost:2181 #http://localhost:2379 #localhost:8848    props:      username: admin      password: 123456  client:    sofa:      props:        contextPath: /sofa        ipAndPort: sofa        appName: sofa        port: 8888

3. Configure the service interface exposed by the sofa service in the xml file in the resources.

<beans xmlns="http://www.springframework.org/schema/beans"       xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"       xmlns:sofa="http://sofastack.io/schema/sofaboot"       xsi:schemaLocation="http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans.xsd            http://sofastack.io/schema/sofaboot https://sofastack.io/schema/sofaboot.xsd"       default-autowire="byName">    <sofa:service ref="sofaSingleParamService" interface="org.apache.shenyu.examples.sofa.api.service.SofaSingleParamService">        <sofa:binding.bolt/>    </sofa:service>    <sofa:service ref="sofaMultiParamService" interface="org.apache.shenyu.examples.sofa.api.service.SofaMultiParamService">        <sofa:binding.bolt/>    </sofa:service></beans>

4. Add the @ShenyuSofaClient annotation to the interface

@ShenyuSofaClient("/demo")@Servicepublic class SofaClientMultiParamServiceImpl implements SofaClientMultiParamService {        @Override    @ShenyuSofaClient("/findByIdsAndName")    public SofaSimpleTypeBean findByIdsAndName(final List<Integer> ids, final String name) {        return new SofaSimpleTypeBean(ids.toString(), "hello world shenyu sofa param findByIdsAndName ：" + name);    }}

5. Start the sofa service, and after successful registration:

• Go to PluginList -> Proxy -> Sofa in the backend management system, you will see the information of auto-registered selectors and rules.
• Go to BasicConfig -> Metadata and search by app name . You will see the metadata of sofa, each sofa interface method, will correspond to a metadata.

User request and parameter description

• The gateway can be requested by means of http to request your sofa service.
  • ShenYu gateway needs to have a routing prefix, this routing prefix is for you to access the project for configuration contextPath .

For example, if you have an order service, it has an interface and its registration path /order/test/save

Now it's to request the gateway via post：http://localhost:9195/order/test/save

Where localhost:9195 is the IP port of the gateway, default port is 9195, /order is the contextPath of your sofa access gateway configuration.

• Parameter passing：

  • Access the gateway through http post，and pass through body and json.
  • For more parameter type transfer, please refer to the interface definition in shenyu-examples-sofa and the parameter transfer method.

• Single java bean parameter type (default)

• Customize multi-parameter support:

• In the gateway project you built, add a new class MySofaParamResolveService, implements org.apache.shenyu.plugin.api.sofa.SofaParamResolveService .

  public interface SofaParamResolveService {
    /**   * Build parameter pair.   * this is Resolve http body to get sofa param.   *   * @param body           the body   * @param parameterTypes the parameter types   * @return the pair   */  Pair<String[], Object[]> buildParameter(String body, String parameterTypes);}

• body is the json string passed by body in http.

• parameterTypes: list of matched method parameter types, If there are multiple, use , to separate.

• In Pair，left is the parameter type，and right is the parameter value. This is the standard for sofa generalization calls.

• Register your class as a String bean and override the default implementation.

  @Beanpublic SofaParamResolveService mySofaParamResolveService() {  return new MySofaParamResolveService();}