fetcher.go

func fetch(c *check) {
        f := &fetcher{}
	for {
		f.once(c)
        }
}
struct fetcher {
     resp *http.Response
     err error
}
func (f *fetcher) once(c *check){
    defer func(){
        if f.resp != nil {
           f.resp.Body.Close()
        }
        log.Printf("at=%s status=sleep", c.name)
        time.Sleep(time.Second)
    }()
    
    log.Printf("at=%s status=begin", c.name)
    if f.resp, f.err = http.Get(c.url); err != nil {
	log.Printf("at=%s status=error error=\"%s\"", c.name, f.err)
	return;
    }
    if _, f.err = ioutil.ReadAll(resp.Body); err != nil {
	log.Printf("at=%s status=error error=\"%s\"", c.name, f.err)
	return;
    }
    log.Printf("at=%s status=success", c.name)
		
}