## plugins development guideline

### SPI agreement

plugins include multiple plugin, every plugin configure the aop pointcut  independently.

plugin is base on java spi, so we need some configuration at the directory path `Resource/META-INF/services`. 

For agent mode, the file name is `io.manbang.zodiac.traffichandler.TrafficHandler`, like:

```
main
└── resources
    └── META-INF
        └── services
            └── io.manbang.zodiac.traffichandler.TrafficHandler
```

For attach mode, the file name is `io.manbang.zodiac.traffichandler.AttachTrafficHandler`, like:

```
main
└── resources
    └── META-INF
        └── services
            └── io.manbang.zodiac.traffichandler.AttachTrafficHandler
```

Next, we only need to add plugin class name to corresponding file.