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filer_server_handlers_read_dir.go
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/
filer_server_handlers_read_dir.go
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package weed_server
import (
"context"
"encoding/base64"
"fmt"
"github.com/skip2/go-qrcode"
"net/http"
"strconv"
"strings"
"github.com/chrislusf/seaweedfs/weed/glog"
ui "github.com/chrislusf/seaweedfs/weed/server/filer_ui"
"github.com/chrislusf/seaweedfs/weed/stats"
"github.com/chrislusf/seaweedfs/weed/util"
)
// listDirectoryHandler lists directories and folers under a directory
// files are sorted by name and paginated via "lastFileName" and "limit".
// sub directories are listed on the first page, when "lastFileName"
// is empty.
func (fs *FilerServer) listDirectoryHandler(w http.ResponseWriter, r *http.Request) {
stats.FilerRequestCounter.WithLabelValues("list").Inc()
path := r.URL.Path
if strings.HasSuffix(path, "/") && len(path) > 1 {
path = path[:len(path)-1]
}
limit, limit_err := strconv.Atoi(r.FormValue("limit"))
if limit_err != nil {
limit = 100
}
lastFileName := r.FormValue("lastFileName")
entries, err := fs.filer.ListDirectoryEntries(context.Background(), util.FullPath(path), lastFileName, false, limit, "")
if err != nil {
glog.V(0).Infof("listDirectory %s %s %d: %s", path, lastFileName, limit, err)
w.WriteHeader(http.StatusNotFound)
return
}
shouldDisplayLoadMore := len(entries) == limit
if path == "/" {
path = ""
}
if len(entries) > 0 {
lastFileName = entries[len(entries)-1].Name()
}
glog.V(4).Infof("listDirectory %s, last file %s, limit %d: %d items", path, lastFileName, limit, len(entries))
if r.Header.Get("Accept") == "application/json" {
writeJsonQuiet(w, r, http.StatusOK, struct {
Path string
Entries interface{}
Limit int
LastFileName string
ShouldDisplayLoadMore bool
}{
path,
entries,
limit,
lastFileName,
shouldDisplayLoadMore,
})
return
}
var qrImageString string
img, err := qrcode.Encode(fmt.Sprintf("http://%s:%d%s", fs.option.Host, fs.option.Port, r.URL.Path), qrcode.Medium, 128)
if err == nil {
qrImageString = base64.StdEncoding.EncodeToString(img)
}
ui.StatusTpl.Execute(w, struct {
Path string
Breadcrumbs []ui.Breadcrumb
Entries interface{}
Limit int
LastFileName string
ShouldDisplayLoadMore bool
QrImage string
}{
path,
ui.ToBreadcrumb(path),
entries,
limit,
lastFileName,
shouldDisplayLoadMore,
qrImageString,
})
}