complement weed mount: add read and delete

weed/server/filer_server_handlers_api.go

@@ -3,9 +3,12 @@ package weed_server
 import (
 	"encoding/json"
 	"net/http"
+	"strconv"
 
 	"github.com/chrislusf/seaweedfs/weed/filer"
 	"github.com/chrislusf/seaweedfs/weed/glog"
+	"github.com/chrislusf/seaweedfs/weed/operation"
+	"github.com/chrislusf/seaweedfs/weed/util"
 )
 
 func (fs *FilerServer) apiHandler(w http.ResponseWriter, r *http.Request) {
@@ -32,5 +35,39 @@ func (fs *FilerServer) apiHandler(w http.ResponseWriter, r *http.Request) {
 			res.Error = err.Error()
 		}
 		writeJsonQuiet(w, r, http.StatusOK, res)
+	case "getFileSize":
+		res := filer.GetFileSizeResult{}
+		server, err := operation.LookupFileId(fs.getMasterNode(), apiRequest.FileId)
+		if err != nil {
+			res.Error = err.Error()
+			writeJsonQuiet(w, r, http.StatusOK, res)
+			return
+		}
+		head, err := util.Head(server)
+		if err != nil {
+			res.Error = err.Error()
+			writeJsonQuiet(w, r, http.StatusOK, res)
+			return
+		}
+		res.Size, err = strconv.ParseUint(head.Get("Content-Length"), 10, 0)
+		if err != nil {
+			res.Error = err.Error()
+		}
+		writeJsonQuiet(w, r, http.StatusOK, res)
+	case "getFileContent":
+		res := filer.GetFileContentResult{}
+		server, err := operation.LookupFileId(fs.getMasterNode(), apiRequest.FileId)
+		if err != nil {
+			res.Error = err.Error()
+			writeJsonQuiet(w, r, http.StatusOK, res)
+			return
+		}
+		res.Content, err = util.Get(server)
+		if err != nil {
+			res.Error = err.Error()
+			writeJsonQuiet(w, r, http.StatusOK, res)
+			return
+		}
+		writeJsonQuiet(w, r, http.StatusOK, res)
 	}
 }