seaweedfs/weed/server/filer_server_handlers_read_dir.go

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package weed_server
import (
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"context"
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"net/http"
"strconv"
"strings"
"github.com/chrislusf/seaweedfs/weed/glog"
ui "github.com/chrislusf/seaweedfs/weed/server/filer_ui"
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"github.com/chrislusf/seaweedfs/weed/stats"
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"github.com/chrislusf/seaweedfs/weed/util"
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)
// 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) {
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stats.FilerRequestCounter.WithLabelValues("list").Inc()
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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")
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entries, err := fs.filer.ListDirectoryEntries(context.Background(), util.FullPath(path), lastFileName, false, limit)
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if err != nil {
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glog.V(0).Infof("listDirectory %s %s %d: %s", path, lastFileName, limit, err)
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w.WriteHeader(http.StatusNotFound)
return
}
shouldDisplayLoadMore := len(entries) == limit
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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,
})
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} else {
ui.StatusTpl.Execute(w, struct {
Path string
Breadcrumbs []ui.Breadcrumb
Entries interface{}
Limit int
LastFileName string
ShouldDisplayLoadMore bool
}{
path,
ui.ToBreadcrumb(path),
entries,
limit,
lastFileName,
shouldDisplayLoadMore,
})
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}
}