mirror of
https://github.com/seaweedfs/seaweedfs.git
synced 2024-11-24 11:09:12 +08:00
9b3109a5d8
* filer calculate MD5 etag * filer handle response headers, instread of pass it to volume servers
319 lines
8.9 KiB
Go
319 lines
8.9 KiB
Go
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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"io"
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"mime/multipart"
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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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"time"
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"google.golang.org/grpc"
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"github.com/chrislusf/seaweedfs/weed/glog"
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"github.com/chrislusf/seaweedfs/weed/operation"
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"github.com/chrislusf/seaweedfs/weed/stats"
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"github.com/chrislusf/seaweedfs/weed/storage/needle"
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"github.com/chrislusf/seaweedfs/weed/util"
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"github.com/gorilla/mux"
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statik "github.com/rakyll/statik/fs"
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_ "github.com/chrislusf/seaweedfs/weed/statik"
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)
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var serverStats *stats.ServerStats
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var startTime = time.Now()
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var statikFS http.FileSystem
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func init() {
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serverStats = stats.NewServerStats()
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go serverStats.Start()
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statikFS, _ = statik.New()
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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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if httpStatus == http.StatusNotModified {
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return
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}
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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 httpStatus == http.StatusNotModified {
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return
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}
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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 status %d: %v", httpStatus, err)
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glog.V(1).Infof("JSON content: %+v", obj)
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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, grpcDialOption grpc.DialOption) {
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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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pu, pe := needle.ParseUpload(r, 256*1024*1024)
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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", pu.FileName)
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r.ParseForm()
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count := uint64(1)
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if r.FormValue("count") != "" {
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count, pe = strconv.ParseUint(r.FormValue("count"), 10, 32)
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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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}
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ar := &operation.VolumeAssignRequest{
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Count: count,
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DataCenter: r.FormValue("dataCenter"),
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Replication: r.FormValue("replication"),
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Collection: r.FormValue("collection"),
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Ttl: r.FormValue("ttl"),
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}
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assignResult, ae := operation.Assign(masterUrl, grpcDialOption, ar)
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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.Url + "/" + assignResult.Fid
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if pu.ModifiedTime != 0 {
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url = url + "?ts=" + strconv.FormatUint(pu.ModifiedTime, 10)
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}
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debug("upload file to store", url)
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uploadResult, err := operation.Upload(url, pu.FileName, false, bytes.NewReader(pu.Data), pu.IsGzipped, pu.MimeType, pu.PairMap, assignResult.Auth)
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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"] = pu.FileName
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m["fid"] = assignResult.Fid
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m["fileUrl"] = assignResult.PublicUrl + "/" + assignResult.Fid
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m["size"] = pu.OriginalDataSize
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m["eTag"] = uploadResult.ETag
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writeJsonQuiet(w, r, http.StatusCreated, m)
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return
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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 statsHealthHandler(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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writeJsonQuiet(w, r, http.StatusOK, m)
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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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func handleStaticResources(defaultMux *http.ServeMux) {
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defaultMux.Handle("/favicon.ico", http.FileServer(statikFS))
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defaultMux.Handle("/seaweedfsstatic/", http.StripPrefix("/seaweedfsstatic", http.FileServer(statikFS)))
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}
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func handleStaticResources2(r *mux.Router) {
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r.Handle("/favicon.ico", http.FileServer(statikFS))
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r.PathPrefix("/seaweedfsstatic/").Handler(http.StripPrefix("/seaweedfsstatic", http.FileServer(statikFS)))
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}
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func adjustHeadersAfterHEAD(w http.ResponseWriter, r *http.Request, filename string) {
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if filename != "" {
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contentDisposition := "inline"
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if r.FormValue("dl") != "" {
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if dl, _ := strconv.ParseBool(r.FormValue("dl")); dl {
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contentDisposition = "attachment"
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}
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}
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w.Header().Set("Content-Disposition", contentDisposition+`; filename="`+fileNameEscaper.Replace(filename)+`"`)
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}
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}
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func processRangeRequst(r *http.Request, w http.ResponseWriter, totalSize int64, mimeType string, writeFn func(writer io.Writer, offset int64, size int64) error) {
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rangeReq := r.Header.Get("Range")
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if rangeReq == "" {
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w.Header().Set("Content-Length", strconv.FormatInt(totalSize, 10))
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if err := writeFn(w, 0, totalSize); err != nil {
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http.Error(w, err.Error(), http.StatusInternalServerError)
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return
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}
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return
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}
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//the rest is dealing with partial content request
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//mostly copy from src/pkg/net/http/fs.go
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ranges, err := parseRange(rangeReq, totalSize)
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if err != nil {
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http.Error(w, err.Error(), http.StatusRequestedRangeNotSatisfiable)
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return
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}
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if sumRangesSize(ranges) > totalSize {
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// The total number of bytes in all the ranges
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// is larger than the size of the file by
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// itself, so this is probably an attack, or a
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// dumb client. Ignore the range request.
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return
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}
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if len(ranges) == 0 {
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return
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}
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if len(ranges) == 1 {
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// RFC 2616, Section 14.16:
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// "When an HTTP message includes the content of a single
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// range (for example, a response to a request for a
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// single range, or to a request for a set of ranges
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// that overlap without any holes), this content is
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// transmitted with a Content-Range header, and a
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// Content-Length header showing the number of bytes
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// actually transferred.
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// ...
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// A response to a request for a single range MUST NOT
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// be sent using the multipart/byteranges media type."
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ra := ranges[0]
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w.Header().Set("Content-Length", strconv.FormatInt(ra.length, 10))
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w.Header().Set("Content-Range", ra.contentRange(totalSize))
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w.WriteHeader(http.StatusPartialContent)
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err = writeFn(w, ra.start, ra.length)
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if err != nil {
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http.Error(w, err.Error(), http.StatusInternalServerError)
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return
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}
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return
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}
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// process multiple ranges
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for _, ra := range ranges {
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if ra.start > totalSize {
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http.Error(w, "Out of Range", http.StatusRequestedRangeNotSatisfiable)
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return
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}
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}
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sendSize := rangesMIMESize(ranges, mimeType, totalSize)
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pr, pw := io.Pipe()
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mw := multipart.NewWriter(pw)
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w.Header().Set("Content-Type", "multipart/byteranges; boundary="+mw.Boundary())
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sendContent := pr
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defer pr.Close() // cause writing goroutine to fail and exit if CopyN doesn't finish.
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go func() {
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for _, ra := range ranges {
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part, e := mw.CreatePart(ra.mimeHeader(mimeType, totalSize))
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if e != nil {
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pw.CloseWithError(e)
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return
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}
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if e = writeFn(part, ra.start, ra.length); e != nil {
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pw.CloseWithError(e)
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return
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}
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}
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mw.Close()
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pw.Close()
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}()
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if w.Header().Get("Content-Encoding") == "" {
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w.Header().Set("Content-Length", strconv.FormatInt(sendSize, 10))
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}
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w.WriteHeader(http.StatusPartialContent)
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if _, err := io.CopyN(w, sendContent, sendSize); err != nil {
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http.Error(w, "Internal Error", http.StatusInternalServerError)
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return
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}
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}
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