golang：如何卸载已经加载的“go插件”1.8

awesome.soAwesomePlugin

type MyPlugin struct { 
    Name string 
    Enable func() error 
    Disable func() error 
} 

然后在插件本身你会做这样的事情：

var (
    awesomeEnabled bool 
) 

func AwesomePlugin() *myplugin.MyPlugin { 
    return &myplugin.MyPlugin{ 
     Name: "AwesomePlugin", 
     Enable: func() error { 
      println("Enabling AwesomePlugin") 
      awesomeEnabled = true 
      return nil // or do something more complex that could error 
     }, 
     Disable: func() error { 
      println("Disabling AwesomePlugin") 
      awesomeEnabled = false 
      return nil // or do something more complex that could error 
     }, 
    } 
} 

然后代码加载它，打开它，并禁用它会是这样像：

awesomePlugin, err := plugin.Open("awesome.so") 
if err != nil { 
    panic("Can't load plugin: " + err.Error()) 
} 

sym, err := awesomePlugin.Lookup("AwesomePlugin") 
if err != nil { 
    panic("Can't find symbol: " + err.Error()) 
} 

awesomeFactory := sym.(func() *myplugin.MyPlugin) 
awesome := awesomeFactory() 

println("Loaded " + awesome.Name + " plugin") 

err = awesome.Enable() 
if err != nil { 
    panic("Can't enable plugin: " + err.Error()) 
} 

// Do some stuff 

err = awesome.Disable() 
if err != nil { 
    panic("Can't enable plugin: " + err.Error()) 
} 

你必须在插件看看代码，看看是否已启用插件或不运行可以定义任何其他功能之前。

然后运行它，我们得到这样的输出：

Loaded AwesomePlugin plugin 
Enabling AwesomePlugin 
Disabling AwesomePlugin 

panic()