2016-06-03 03:05:34 +00:00
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package weed_server
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import (
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2016-07-21 04:20:22 +00:00
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"io"
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"net/http"
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"net/url"
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"strconv"
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"strings"
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"github.com/chrislusf/seaweedfs/weed/glog"
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"github.com/chrislusf/seaweedfs/weed/operation"
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ui "github.com/chrislusf/seaweedfs/weed/server/filer_ui"
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"github.com/chrislusf/seaweedfs/weed/util"
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"github.com/syndtr/goleveldb/leveldb"
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)
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2016-07-21 04:20:22 +00:00
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// listDirectoryHandler lists directories and folers under a directory
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// files are sorted by name and paginated via "lastFileName" and "limit".
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// sub directories are listed on the first page, when "lastFileName"
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// is empty.
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func (fs *FilerServer) listDirectoryHandler(w http.ResponseWriter, r *http.Request) {
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if !strings.HasSuffix(r.URL.Path, "/") {
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return
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}
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limit, limit_err := strconv.Atoi(r.FormValue("limit"))
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if limit_err != nil {
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limit = 100
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}
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2016-07-20 08:46:28 +00:00
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lastFileName := r.FormValue("lastFileName")
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files, err := fs.filer.ListFiles(r.URL.Path, lastFileName, limit)
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if err == leveldb.ErrNotFound {
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glog.V(0).Infof("Error %s", err)
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w.WriteHeader(http.StatusNotFound)
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return
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}
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2016-07-18 08:28:24 +00:00
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directories, err2 := fs.filer.ListDirectories(r.URL.Path)
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if err2 == leveldb.ErrNotFound {
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glog.V(0).Infof("Error %s", err)
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w.WriteHeader(http.StatusNotFound)
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return
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}
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2016-07-20 08:46:28 +00:00
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shouldDisplayLoadMore := len(files) > 0
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lastFileName = ""
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if len(files) > 0 {
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lastFileName = files[len(files)-1].Name
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files2, err3 := fs.filer.ListFiles(r.URL.Path, lastFileName, limit)
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if err3 == leveldb.ErrNotFound {
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glog.V(0).Infof("Error %s", err)
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w.WriteHeader(http.StatusNotFound)
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return
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}
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shouldDisplayLoadMore = len(files2) > 0
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}
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args := struct {
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Path string
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Files interface{}
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Directories interface{}
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Limit int
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LastFileName string
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ShouldDisplayLoadMore bool
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}{
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r.URL.Path,
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files,
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directories,
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limit,
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lastFileName,
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shouldDisplayLoadMore,
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}
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ui.StatusTpl.Execute(w, args)
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}
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2016-07-21 04:20:22 +00:00
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func (fs *FilerServer) GetOrHeadHandler(w http.ResponseWriter, r *http.Request, isGetMethod bool) {
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if strings.HasSuffix(r.URL.Path, "/") {
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if fs.disableDirListing {
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w.WriteHeader(http.StatusMethodNotAllowed)
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return
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}
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fs.listDirectoryHandler(w, r)
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return
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}
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fileId, err := fs.filer.FindFile(r.URL.Path)
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if err == leveldb.ErrNotFound {
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glog.V(3).Infoln("Not found in db", r.URL.Path)
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w.WriteHeader(http.StatusNotFound)
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return
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}
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urlLocation, err := operation.LookupFileId(fs.getMasterNode(), fileId)
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if err != nil {
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glog.V(1).Infoln("operation LookupFileId %s failed, err is %s", fileId, err.Error())
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w.WriteHeader(http.StatusNotFound)
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return
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}
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urlString := urlLocation
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if fs.redirectOnRead {
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http.Redirect(w, r, urlString, http.StatusFound)
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return
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}
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u, _ := url.Parse(urlString)
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q := u.Query()
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for key, values := range r.URL.Query() {
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for _, value := range values {
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q.Add(key, value)
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}
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}
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u.RawQuery = q.Encode()
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request := &http.Request{
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Method: r.Method,
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URL: u,
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Proto: r.Proto,
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ProtoMajor: r.ProtoMajor,
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ProtoMinor: r.ProtoMinor,
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Header: r.Header,
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Body: r.Body,
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Host: r.Host,
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ContentLength: r.ContentLength,
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}
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glog.V(3).Infoln("retrieving from", u)
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resp, do_err := util.Do(request)
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if do_err != nil {
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glog.V(0).Infoln("failing to connect to volume server", do_err.Error())
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writeJsonError(w, r, http.StatusInternalServerError, do_err)
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return
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}
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defer resp.Body.Close()
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for k, v := range resp.Header {
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w.Header()[k] = v
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}
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w.WriteHeader(resp.StatusCode)
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io.Copy(w, resp.Body)
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}
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