func (mm *ModuleManager) RegisterRouterGroup(group *gin.RouterGroup) {
group.GET("/", func(c *gin.Context) {
c.JSON(http.StatusOK, (*mm).GetAllModules())
})
group.POST("/", func(c *gin.Context) {
var req shared.Module
err := c.BindJSON(&req)
if err != nil {
c.JSON(400, shared.HttpError{"Decoding HTTP body failed.", err})
return
}
if strings.TrimSpace(req.ModuleURL) == "" {
c.JSON(400, shared.HttpError{"Attribute 'module-url' is missing.", nil})
return
}
if mm.GetModule(req.Metadata.ID) != nil {
c.JSON(423, shared.HttpError{"Module already registered.", nil})
return
}
mm.AddModule(&req)
})
group.Any("/:module/proxy/*path", func(c *gin.Context) {
module := mm.GetModule(c.Param("module"))
if module == nil {
c.JSON(404, shared.HttpError{"Module not found.", nil})
return
}
target, err := url.Parse(module.ModuleURL)
if module == nil {
c.JSON(500, shared.HttpError{"Error connecting to module.", err})
return
}
oldPrefix := fmt.Sprintf("%s/%s/proxy", group.BasePath(), module.Metadata.ID)
newPrefix := "/module"
var handler http.Handler
handler = httputil.NewSingleHostReverseProxy(target)
handler = HTTPAddPrefix(newPrefix, handler)
handler = http.StripPrefix(oldPrefix, handler)
wrapper := gin.WrapH(handler)
wrapper(c)
})
}