title: Request Plugin keywords: [“request”] description: request plugin

1. Overview

1.1 Plugin Name

  • Request Plugin

1.2 Appropriate Scenario

  • The request plugin is able to make customized changes to the request parameters of uri.

1.3 Plugin functionality

  • The Apache ShenYu gateway allows users to use the request plugin to add, modify, and remove request headers to request parameters, request headers, and Cookie when proxying a target service.

1.4 Plugin code

  • Core Module shenyu-plugin-request

  • Core Class org.apache.shenyu.plugin.request.RequestPlugin

1.5 Added Since Which shenyu version

  • Since ShenYu 2.4.0

2. How to use plugin

2.1 Plugin-use procedure chart

2.2 Import pom

  • Import maven config in shenyu-bootstrap project's pom.xml file, which is already added by default.
  <dependency>
      <groupId>org.apache.shenyu</groupId>
      <artifactId>shenyu-spring-boot-starter-plugin-request</artifactId>
      <version>${project.version}</version>
  </dependency>

2.3 Enable plugin

  • In shenyu-admin --> BasicConfig --> Plugin --> request set Status enabled.

    If there is an option to configure a ruleHandlePageType on the page here, you can configure any string, e.g. custom, which has no effect on the request, and will be removed in later versions.

2.4 Config plugin

  • selectors and rules, only requests that match are forwarded and redirected, see the Selector And Rule Config

  • shenyu-admin Plugin --> HttpProcess --> Request. Add the selector first, then add the rule：

  • Add the selector:

  • Add the rule

2.5 Examples

2.5.1 Adding request parameters

  • When we configure a custom path in Rules, it should be a reachable service path.
  • When a request is matched, based on the customized path, the Apache ShenYu gateway performs a service hop.
  1. Refer to Local Deployment启动 admin 和网关
  2. Refer to 2.2 importing pom and restarting the gateway.
  3. Refer to 2.3 enabling Plugin
  4. Start the project shenyu-examples-http
  5. Refer to 2.4 and Selector And Rule Config, configuring plugin rules.
  6. Call interface：http-test-api.http

  • Calling the interface declared by the selector and rule will see the request parameters configured in the request plugin.

3. How to disable plugin

  • In shenyu-admin --> BasicConfig --> Plugin --> request set Status disable.