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