package weed_server import ( "bytes" "code.google.com/p/weed-fs/go/glog" "code.google.com/p/weed-fs/go/operation" "code.google.com/p/weed-fs/go/stats" "code.google.com/p/weed-fs/go/storage" "code.google.com/p/weed-fs/go/util" "encoding/json" "fmt" "net" "net/http" "path/filepath" "strconv" "strings" ) var serverStats *stats.ServerStats func init() { serverStats = stats.NewServerStats() go serverStats.Start() } func writeJson(w http.ResponseWriter, r *http.Request, obj interface{}) (err error) { var bytes []byte if r.FormValue("pretty") != "" { bytes, err = json.MarshalIndent(obj, "", " ") } else { bytes, err = json.Marshal(obj) } if err != nil { return } callback := r.FormValue("callback") if callback == "" { w.Header().Set("Content-Type", "application/json") _, err = w.Write(bytes) } else { w.Header().Set("Content-Type", "application/javascript") if _, err = w.Write([]uint8(callback)); err != nil { return } if _, err = w.Write([]uint8("(")); err != nil { return } fmt.Fprint(w, string(bytes)) if _, err = w.Write([]uint8(")")); err != nil { return } } return } // wrapper for writeJson - just logs errors func writeJsonQuiet(w http.ResponseWriter, r *http.Request, obj interface{}) { if err := writeJson(w, r, obj); err != nil { glog.V(0).Infof("error writing JSON %s: %s", obj, err.Error()) } } func writeJsonError(w http.ResponseWriter, r *http.Request, err error) { w.WriteHeader(http.StatusInternalServerError) m := make(map[string]interface{}) m["error"] = err.Error() writeJsonQuiet(w, r, m) } func debug(params ...interface{}) { glog.V(4).Infoln(params) } func secure(whiteList []string, f func(w http.ResponseWriter, r *http.Request)) func(w http.ResponseWriter, r *http.Request) { return func(w http.ResponseWriter, r *http.Request) { if len(whiteList) == 0 { f(w, r) return } host, _, err := net.SplitHostPort(r.RemoteAddr) if err == nil { for _, ip := range whiteList { if ip == host { f(w, r) return } } } writeJsonQuiet(w, r, map[string]interface{}{"error": "No write permisson from " + host}) } } func submitForClientHandler(w http.ResponseWriter, r *http.Request, masterUrl string) { m := make(map[string]interface{}) if r.Method != "POST" { m["error"] = "Only submit via POST!" writeJsonQuiet(w, r, m) return } debug("parsing upload file...") fname, data, mimeType, isGzipped, lastModified, pe := storage.ParseUpload(r) if pe != nil { writeJsonError(w, r, pe) return } debug("assigning file id for", fname) assignResult, ae := operation.Assign(masterUrl, 1, r.FormValue("replication"), r.FormValue("collection")) if ae != nil { writeJsonError(w, r, ae) return } url := "http://" + assignResult.PublicUrl + "/" + assignResult.Fid if lastModified != 0 { url = url + "?ts=" + strconv.FormatUint(lastModified, 10) } debug("upload file to store", url) uploadResult, err := operation.Upload(url, fname, bytes.NewReader(data), isGzipped, mimeType) if err != nil { writeJsonError(w, r, err) return } m["fileName"] = fname m["fid"] = assignResult.Fid m["fileUrl"] = assignResult.PublicUrl + "/" + assignResult.Fid m["size"] = uploadResult.Size writeJsonQuiet(w, r, m) return } func deleteForClientHandler(w http.ResponseWriter, r *http.Request, masterUrl string) { r.ParseForm() fids := r.Form["fid"] ret, err := operation.DeleteFiles(masterUrl, fids) if err != nil { writeJsonError(w, r, err) return } writeJsonQuiet(w, r, ret) } func parseURLPath(path string) (vid, fid, filename, ext string, isVolumeIdOnly bool) { switch strings.Count(path, "/") { case 3: parts := strings.Split(path, "/") vid, fid, filename = parts[1], parts[2], parts[3] ext = filepath.Ext(filename) case 2: parts := strings.Split(path, "/") vid, fid = parts[1], parts[2] dotIndex := strings.LastIndex(fid, ".") if dotIndex > 0 { ext = fid[dotIndex:] fid = fid[0:dotIndex] } default: sepIndex := strings.LastIndex(path, "/") commaIndex := strings.LastIndex(path[sepIndex:], ",") if commaIndex <= 0 { vid, isVolumeIdOnly = path[sepIndex+1:], true return } dotIndex := strings.LastIndex(path[sepIndex:], ".") vid = path[sepIndex+1 : commaIndex] fid = path[commaIndex+1:] ext = "" if dotIndex > 0 { fid = path[commaIndex+1 : dotIndex] ext = path[dotIndex:] } } return } func statsCounterHandler(w http.ResponseWriter, r *http.Request) { m := make(map[string]interface{}) m["Version"] = util.VERSION m["Counters"] = serverStats writeJsonQuiet(w, r, m) } func statsMemoryHandler(w http.ResponseWriter, r *http.Request) { m := make(map[string]interface{}) m["Version"] = util.VERSION m["Memory"] = stats.MemStat() writeJsonQuiet(w, r, m) }