add "weed copy" command to copy files to filer

weed/operation/filer/register.go

@@ -0,0 +1,31 @@
+package operation
+
+import (
+	"fmt"
+	"net/url"
+
+	"github.com/chrislusf/seaweedfs/weed/security"
+	"github.com/chrislusf/seaweedfs/weed/util"
+)
+
+type SubmitResult struct {
+	FileName string `json:"fileName,omitempty"`
+	FileUrl  string `json:"fileUrl,omitempty"`
+	Fid      string `json:"fid,omitempty"`
+	Size     uint32 `json:"size,omitempty"`
+	Error    string `json:"error,omitempty"`
+}
+
+func RegisterFile(filer string, path string, fileId string, secret security.Secret) error {
+	// TODO: jwt need to be used
+	_ = security.GenJwt(secret, fileId)
+
+	values := make(url.Values)
+	values.Add("path", path)
+	values.Add("fileId", fileId)
+	_, err := util.Post("http://"+filer+"/admin/register", values)
+	if err != nil {
+		return fmt.Errorf("Failed to register path:%s on filer:%s to file id:%s", path, filer, fileId)
+	}
+	return nil
+}