Installation

Overview

This document explains how to install apisix-java-plugin-runner.

Prerequisites

• JDK 11
• APISIX master branch
• Refer to Debug to build the debug environment.

Install

1. Create a simple web application with Spring Boot, and choose Maven as the build tool.

2. Add the apisix-java-plugin-runner dependency in your POM, like:

<dependency>
    <groupId>org.apache.apisix</groupId> 
    <artifactId>apisix-runner-starter</artifactId>
    <version>0.5.0</version>
</dependency>

3. Configuring the scan package path

```java
@SpringBootApplication(scanBasePackages = {"your-filter's-package-name","org.apache.apisix.plugin.runner"})

4. Excluding the default logging framework

To prevent multiple slf4j bindings, exclude the logback-classic and log4j-to-slf4j in pom.xml, like:

<dependency>
    <groupId>org.springframework.boot</groupId>
    <artifactId>spring-boot-starter</artifactId>
    <exclusions>
           <exclusion>
                <groupId>ch.qos.logback</groupId>
                <artifactId>logback-classic</artifactId>
           </exclusion>
           <exclusion>
                <groupId>org.apache.logging.log4j</groupId>
                <artifactId>log4j-to-slf4j</artifactId>
           </exclusion>
    </exclusions>
</dependency>

5. Configuring the address for Unix Domain Socket communication with APISIX

socket.file = /tmp/runner.sock

6. Implementing the PluginFilter interface

When you write your custom plugins, you need to implement the PluginFilter interface and inject filters into Spring Boot's object lifecycle management using @Component.

code example:

@Component
public class RewriteRequestDemoFilter implements PluginFilter {
  ......
  implementing functions
}

You can refer to Development to learn how to write custom plugins.

Demo

A Demo Project that work with apisix-java-plugin-runner and custom filters can be found at: java-plugin-runner-demo.