6d5f2a4391
Better support of HEAD and listing of zero sized objects with trailing slash (a.k.a empty directory). For that, isLeafDir function is added to indicate if the specified object is an empty directory or not. Each backend (xl, fs) has the responsibility to store that information. Currently, in both of XL & FS, an empty directory is represented by an empty directory in the backend. isLeafDir() checks if the given path is an empty directory or not, since dir listing is costly if the latter contains too many objects, readDirN() is added in this PR to list only N number of entries. In isLeadDir(), we will only list one entry to check if a directory is empty or not.
159 lines
3.2 KiB
Go
159 lines
3.2 KiB
Go
/*
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* Minio Cloud Storage, (C) 2016 Minio, Inc.
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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package cmd
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// GenericVolArgs - generic volume args.
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type GenericVolArgs struct {
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// Authentication token generated by Login.
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AuthRPCArgs
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// Name of the volume.
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Vol string
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}
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// ListVolsReply represents list of vols RPC reply.
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type ListVolsReply struct {
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// List of volumes stat information.
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Vols []VolInfo
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}
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// ReadAllArgs represents read all RPC arguments.
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type ReadAllArgs struct {
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// Authentication token generated by Login.
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AuthRPCArgs
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// Name of the volume.
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Vol string
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// Name of the path.
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Path string
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}
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// ReadFileArgs represents read file RPC arguments.
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type ReadFileArgs struct {
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// Authentication token generated by Login.
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AuthRPCArgs
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// Name of the volume.
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Vol string
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// Name of the path.
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Path string
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// Starting offset to start reading into Buffer.
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Offset int64
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// Data buffer read from the path at offset.
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Buffer []byte
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// Algorithm used in bit-rot hash computation.
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Algo BitrotAlgorithm
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// Stored hash value used to compare with computed value.
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ExpectedHash []byte
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// Indicates whether the disk has already been verified
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Verified bool
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}
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// PrepareFileArgs represents append file RPC arguments.
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type PrepareFileArgs struct {
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// Authentication token generated by Login.
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AuthRPCArgs
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// Name of the volume.
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Vol string
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// Name of the path.
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Path string
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// Size of the file to be prepared
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Size int64
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}
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// AppendFileArgs represents append file RPC arguments.
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type AppendFileArgs struct {
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// Authentication token generated by Login.
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AuthRPCArgs
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// Name of the volume.
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Vol string
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// Name of the path.
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Path string
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// Data buffer to be saved at path.
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Buffer []byte
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}
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// StatFileArgs represents stat file RPC arguments.
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type StatFileArgs struct {
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// Authentication token generated by Login.
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AuthRPCArgs
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// Name of the volume.
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Vol string
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// Name of the path.
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Path string
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}
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// DeleteFileArgs represents delete file RPC arguments.
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type DeleteFileArgs struct {
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// Authentication token generated by Login.
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AuthRPCArgs
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// Name of the volume.
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Vol string
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// Name of the path.
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Path string
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}
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// ListDirArgs represents list contents RPC arguments.
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type ListDirArgs struct {
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// Authentication token generated by Login.
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AuthRPCArgs
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// Name of the volume.
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Vol string
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// Name of the path.
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Path string
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// Number of wanted results
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Count int
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}
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// RenameFileArgs represents rename file RPC arguments.
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type RenameFileArgs struct {
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// Authentication token generated by Login.
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AuthRPCArgs
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// Name of source volume.
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SrcVol string
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// Source path to be renamed.
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SrcPath string
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// Name of destination volume.
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DstVol string
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// Destination path of renamed file.
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DstPath string
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}
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