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filer: add API to add/modify/delete tagging

This commit is contained in:
Chris Lu 2020-11-09 01:00:07 -08:00
parent 4f676aa7d3
commit 6856b0d57e
3 changed files with 118 additions and 6 deletions

View file

@ -38,10 +38,12 @@ func init() {
func writeJson(w http.ResponseWriter, r *http.Request, httpStatus int, obj interface{}) (err error) {
var bytes []byte
if r.FormValue("pretty") != "" {
bytes, err = json.MarshalIndent(obj, "", " ")
} else {
bytes, err = json.Marshal(obj)
if obj != nil {
if r.FormValue("pretty") != "" {
bytes, err = json.MarshalIndent(obj, "", " ")
} else {
bytes, err = json.Marshal(obj)
}
}
if err != nil {
return

View file

@ -26,11 +26,19 @@ func (fs *FilerServer) filerHandler(w http.ResponseWriter, r *http.Request) {
stats.FilerRequestHistogram.WithLabelValues("head").Observe(time.Since(start).Seconds())
case "DELETE":
stats.FilerRequestCounter.WithLabelValues("delete").Inc()
fs.DeleteHandler(w, r)
if _, ok := r.URL.Query()["tagging"]; ok {
fs.DeleteTaggingHandler(w,r)
} else {
fs.DeleteHandler(w, r)
}
stats.FilerRequestHistogram.WithLabelValues("delete").Observe(time.Since(start).Seconds())
case "PUT":
stats.FilerRequestCounter.WithLabelValues("put").Inc()
fs.PostHandler(w, r)
if _, ok := r.URL.Query()["tagging"]; ok {
fs.PutTaggingHandler(w,r)
} else {
fs.PostHandler(w, r)
}
stats.FilerRequestHistogram.WithLabelValues("put").Observe(time.Since(start).Seconds())
case "POST":
stats.FilerRequestCounter.WithLabelValues("post").Inc()

View file

@ -0,0 +1,102 @@
package weed_server
import (
"context"
"net/http"
"strings"
"github.com/chrislusf/seaweedfs/weed/glog"
"github.com/chrislusf/seaweedfs/weed/storage/needle"
"github.com/chrislusf/seaweedfs/weed/util"
)
// add or replace one file Seaweed- prefixed attributes
// curl -X PUT -H "Seaweed-Name1: value1" http://localhost:8888/path/to/a/file?tagging
func (fs *FilerServer) PutTaggingHandler(w http.ResponseWriter, r *http.Request) {
ctx := context.Background()
path := r.URL.Path
if strings.HasSuffix(path, "/") {
path = path[:len(path)-1]
}
existingEntry, err := fs.filer.FindEntry(ctx, util.FullPath(path))
if err != nil {
writeJsonError(w, r, http.StatusNotFound, err)
return
}
if existingEntry == nil {
writeJsonError(w, r, http.StatusNotFound, err)
return
}
if existingEntry.Extended == nil {
existingEntry.Extended = make(map[string][]byte)
}
for header, values := range r.Header {
if strings.HasPrefix(header, needle.PairNamePrefix) {
for _, value := range values {
existingEntry.Extended[header] = []byte(value)
}
}
}
if dbErr := fs.filer.CreateEntry(ctx, existingEntry, false, false, nil); dbErr != nil {
glog.V(0).Infof("failing to update %s tagging : %v", path, dbErr)
writeJsonError(w, r, http.StatusInternalServerError, err)
return
}
writeJsonQuiet(w, r, http.StatusAccepted, nil)
return
}
// remove all Seaweed- prefixed attributes
// curl -X DELETE http://localhost:8888/path/to/a/file?tagging
func (fs *FilerServer) DeleteTaggingHandler(w http.ResponseWriter, r *http.Request) {
ctx := context.Background()
path := r.URL.Path
if strings.HasSuffix(path, "/") {
path = path[:len(path)-1]
}
existingEntry, err := fs.filer.FindEntry(ctx, util.FullPath(path))
if err != nil {
writeJsonError(w, r, http.StatusNotFound, err)
return
}
if existingEntry == nil {
writeJsonError(w, r, http.StatusNotFound, err)
return
}
if existingEntry.Extended == nil {
existingEntry.Extended = make(map[string][]byte)
}
hasDeletion := false
for header, _ := range existingEntry.Extended {
if strings.HasPrefix(header, needle.PairNamePrefix) {
delete(existingEntry.Extended, header)
hasDeletion = true
}
}
if !hasDeletion {
writeJsonQuiet(w, r, http.StatusNotModified, nil)
return
}
if dbErr := fs.filer.CreateEntry(ctx, existingEntry, false, false, nil); dbErr != nil {
glog.V(0).Infof("failing to delete %s tagging : %v", path, dbErr)
writeJsonError(w, r, http.StatusInternalServerError, err)
return
}
writeJsonQuiet(w, r, http.StatusAccepted, nil)
return
}