예제 #1
0
파일: http_api.go 프로젝트: yonglehou/bfs
func (s *Server) get(wr http.ResponseWriter, r *http.Request) {
	var (
		v                *volume.Volume
		n                *needle.Needle
		err              error
		vid, key, cookie int64
		ret              = http.StatusOK
		params           = r.URL.Query()
		now              = time.Now()
	)
	if r.Method != "GET" && r.Method != "HEAD" {
		ret = http.StatusMethodNotAllowed
		http.Error(wr, "method not allowed", ret)
		return
	}
	defer HttpGetWriter(r, wr, now, &err, &ret)
	if vid, err = strconv.ParseInt(params.Get("vid"), 10, 32); err != nil {
		log.Errorf("strconv.ParseInt(\"%s\") error(%v)", params.Get("vid"), err)
		ret = http.StatusBadRequest
		return
	}
	if key, err = strconv.ParseInt(params.Get("key"), 10, 64); err != nil {
		log.Errorf("strconv.ParseInt(\"%s\") error(%v)", params.Get("key"), err)
		ret = http.StatusBadRequest
		return
	}
	if cookie, err = strconv.ParseInt(params.Get("cookie"), 10, 32); err != nil {
		log.Errorf("strconv.ParseInt(\"%s\") error(%v)", params.Get("cookie"), err)
		ret = http.StatusBadRequest
		return
	}
	n = s.store.Needle()
	n.Key = key
	n.Cookie = int32(cookie)
	if v = s.store.Volumes[int32(vid)]; v != nil {
		if err = v.Get(n); err != nil {
			if err == errors.ErrNeedleDeleted || err == errors.ErrNeedleNotExist {
				ret = http.StatusNotFound
			} else {
				ret = http.StatusInternalServerError
			}
		}
	} else {
		ret = http.StatusNotFound
		err = errors.ErrVolumeNotExist
	}
	if err == nil {
		if r.Method == "GET" {
			if _, err = wr.Write(n.Data); err != nil {
				log.Errorf("wr.Write() error(%v)", err)
				ret = http.StatusInternalServerError
			}
		}
		if log.V(1) {
			log.Infof("get a needle: %v", n)
		}
	}
	s.store.FreeNeedle(n)
	return
}
예제 #2
0
파일: volume.go 프로젝트: yonglehou/bfs
// Probe probe a needle by key.
func (v *Volume) Probe(n *needle.Needle) (err error) {
	var key int64
	v.lock.RLock()
	// get a rand key
	for key, _ = range v.needles {
		break
	}
	v.lock.RUnlock()
	n.Key = key
	if err = v.get(n); err != nil {
		return
	}
	return
}