Version: 2.5.1

1. Overview

1.1 Plugin name#

Sofa plugin

1.2 Appropriate scenario#

Protocol conversion, a plugin that converts http protocol requests into the sofa framework protocol
Service Load Balancing.

1.3 Plugin functionality#

Converting http protocol requests to sofa framework protocol.

1.4 Plugin code#

Core Module shenyu-plugin-sofa
Core Class org.apache.shenyu.plugin.sofa.SofaPlugin

1.5 Added since which shenyu version#

2.3.0

2. How to use plugin

2.1 Plugin-use procedure chart#

2.2 Import pom#

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

2.3 Configure in the client project#

Configure the sofa configuration 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

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

<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">        <!-- 示例 sofa 接口 -->    <sofa:service ref="sofaSingleParamService" interface="org.apache.shenyu.examples.sofa.api.service.SofaSingleParamService">        <sofa:binding.bolt/>    </sofa:service>        <!-- 示例 sofa 接口 -->    <sofa:service ref="sofaMultiParamService" interface="org.apache.shenyu.examples.sofa.api.service.SofaMultiParamService">        <sofa:binding.bolt/>    </sofa:service></beans>

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);    }}

2.4 Enable plugin#

In shenyu-admin --> BasicConfig --> Plugin --> sofa set Status enabled.

2.5 Config plugin#

2.5.1 Registry Config#

protocol: Register center protocol, currently supports zookeeper、consul、nacos.
register: The service IP and PORT of the registry.
threadpool：There are five types of business thread pools: fixed, eager, cached, limited and shared. The first 4 types correspond to the thread pools officially provided by dubbo. Let's talk about shared, as its name implies, all proxy plugins share a shared thread pool, the advantage of this is that it can reduce the number of thread pools, thereby reducing memory and improving resource utilization.
corethreads：The number of core threads in the business thread pool.
threads：The maximum number of threads in the business thread pool.
queues：The length of the blocking queue of the business thread pool, 0 means unbounded blocking queue.

2.5.2 Selector config#

Flow needs to be matched by selector.

Automatically configure the selector with the @ShenyuSofaClient annotation.

2.5.3 Rule Config#

After the traffic has been successfully matched by the selector, it will enter the rules for the final traffic matching.

Automatically configure the selector with the @ShenyuSofaClient annotation.

2.5.4 Metadata config#

When the sofa application client accesses the Apache ShenYu gateway, it will be automatically registered, and can be viewed in the -shenyu-admin backend management system's basic configuration --> metadata management, each sofa interface method, will correspond to a metadata.

AppName: specifies the name of the application to which the metadata belongs.
MethodName: the name of the method to call.
Path: http request path.
PathDescribe: the description of the path is easy to view.
ParamsType: the parameters are separated by commas (,) in the order of interface parameter types.
RpcExpand: other configurations of the sofa interface, which support the JSON format.
examples：{"loadbalance":"hash","retries":3,"timeout":-1}
- loadbalance：Load balancing policy, currently supports roundRobin, random and hash.
- retries：Number of retries to call client timeout failures.
- timeout：Calling the client's timeout time.
Interface: The fully qualified class name of the sofa interface.
RpcType：choose sofa.

2.6 Examples#

2.6.1 Accessing the sofa service via Zookeeper using ShenYu#

2.6.1.1 Preparation#

Start Zookeeper service.
Start ShenYu Admin.
Start Shenyu Bootstrap.

2.6.1.2 Plugin Config#

In shenyu-admin --> BasicConfig --> Plugin --> sofa set Status enabled, And adjust the registry configuration as needed.
Adjust to the actual situation shenyu-examples-sofa application.yml configuration in the project and start it.

2.6.2.6 Request service and check result#

3. How to disable plugin

In shenyu-admin --> BasicConfig --> Plugin --> sofa set Status disable.