Golang匹配域名通配符

I have hostnameWhitelist map

var hostnameWhitelist = map[string] bool { "test.mydomain.com":true, "test12.mydomaindev.com":true}

And the way I check if incoming request's hostname is allowed or not is -

    url, errURL := url.Parse("test.mydomain.com")
    if errURL != nil {
        fmt.Println("error during parsing URL")
        return false
    }
    fmt.Println("HOSTNAME = " + url.Hostname())

    if ok := hostnameWhitelist[url.Hostname()]; ok {
        fmt.Println("valid domain, allow access")
    } else {
        fmt.Println("NOT valid domain")
        return false
    }

While this works great, how do I do a wild card match like -

*.mydomain.com 
*.mydomaindev.com 

Both of these should pass.

While,

*.test.com
*.hello.com

should fail