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fs: implement MetadataInfo to show info about metadata in help and rc
Info about this will appear in operations/fsinfo and in the backend help (`rclone help backend s3`).
This commit is contained in:
Nick Craig-Wood
parent
6a0e021dac
commit
0652ec95db
25
cmd/help.go
25
cmd/help.go
@ -6,6 +6,7 @@ import (
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"log"
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"os"
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"regexp"
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"sort"
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"strings"
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"github.com/rclone/rclone/fs"
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@ -362,4 +363,28 @@ func showBackend(name string) {
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fmt.Printf("\n")
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}
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}
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if backend.MetadataInfo != nil {
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fmt.Printf("### Metadata\n\n")
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fmt.Printf("%s\n\n", strings.TrimSpace(backend.MetadataInfo.Help))
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if len(backend.MetadataInfo.System) > 0 {
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fmt.Printf("Here are the possible system metadata items for the %s backend.\n\n", backend.Name)
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keys := []string{}
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for k := range backend.MetadataInfo.System {
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keys = append(keys, k)
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}
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sort.Strings(keys)
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fmt.Printf("| Name | Help | Type | Example | Read Only |\n")
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fmt.Printf("|------|------|------|---------|-----------|\n")
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for _, k := range keys {
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v := backend.MetadataInfo.System[k]
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ro := "N"
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if v.ReadOnly {
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ro = "**Y**"
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}
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fmt.Printf("| %s | %s | %s | %s | %s |\n", k, v.Help, v.Type, v.Example, ro)
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}
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fmt.Printf("\n")
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}
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fmt.Printf("See the [metadata](/docs/#metadata) docs for more info.\n\n")
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}
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}
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@ -7,6 +7,20 @@ import "context"
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// See docs/content/metadata.md for the interpretation of the keys
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type Metadata map[string]string
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// MetadataHelp represents help for a bit of system metadata
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type MetadataHelp struct {
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Help string
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Type string
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Example string
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ReadOnly bool
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}
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// MetadataInfo is help for the whole metadata for this backend.
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type MetadataInfo struct {
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System map[string]MetadataHelp
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Help string
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}
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// Set k to v on m
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//
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// If m is nil, then it will get made
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@ -2278,21 +2278,30 @@ type FsInfo struct {
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// Features returns the optional features of this Fs
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Features map[string]bool
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// MetadataInfo returns info about the metadata for this backend
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MetadataInfo *fs.MetadataInfo
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}
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// GetFsInfo gets the information (FsInfo) about a given Fs
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func GetFsInfo(f fs.Fs) *FsInfo {
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features := f.Features()
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info := &FsInfo{
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Name: f.Name(),
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Root: f.Root(),
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String: f.String(),
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Precision: f.Precision(),
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Hashes: make([]string, 0, 4),
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Features: f.Features().Enabled(),
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Name: f.Name(),
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Root: f.Root(),
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String: f.String(),
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Precision: f.Precision(),
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Hashes: make([]string, 0, 4),
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Features: features.Enabled(),
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MetadataInfo: nil,
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}
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for _, hashType := range f.Hashes().Array() {
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info.Hashes = append(info.Hashes, hashType.String())
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}
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fsInfo, _, _, _, err := fs.ParseRemote(fs.ConfigString(f))
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if err == nil && fsInfo != nil && fsInfo.MetadataInfo != nil {
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info.MetadataInfo = fsInfo.MetadataInfo
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}
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return info
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}
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@ -413,46 +413,103 @@ This returns info about the remote passed in;
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` + "```" + `
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{
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// optional features and whether they are available or not
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"Features": {
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"About": true,
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"BucketBased": false,
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"CanHaveEmptyDirectories": true,
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"CaseInsensitive": false,
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"ChangeNotify": false,
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"CleanUp": false,
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"Copy": false,
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"DirCacheFlush": false,
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"DirMove": true,
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"DuplicateFiles": false,
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"GetTier": false,
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"ListR": false,
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"MergeDirs": false,
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"Move": true,
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"OpenWriterAt": true,
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"PublicLink": false,
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"Purge": true,
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"PutStream": true,
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"PutUnchecked": false,
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"ReadMimeType": false,
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"ServerSideAcrossConfigs": false,
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"SetTier": false,
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"SetWrapper": false,
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"UnWrap": false,
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"WrapFs": false,
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"WriteMimeType": false
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},
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// Names of hashes available
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"Hashes": [
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"MD5",
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"SHA-1",
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"DropboxHash",
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"QuickXorHash"
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],
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"Name": "local", // Name as created
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"Precision": 1, // Precision of timestamps in ns
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"Root": "/", // Path as created
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"String": "Local file system at /" // how the remote will appear in logs
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// optional features and whether they are available or not
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"Features": {
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"About": true,
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"BucketBased": false,
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"BucketBasedRootOK": false,
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"CanHaveEmptyDirectories": true,
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"CaseInsensitive": false,
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"ChangeNotify": false,
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"CleanUp": false,
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"Command": true,
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"Copy": false,
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"DirCacheFlush": false,
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"DirMove": true,
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"Disconnect": false,
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"DuplicateFiles": false,
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"GetTier": false,
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"IsLocal": true,
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"ListR": false,
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"MergeDirs": false,
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"MetadataInfo": true,
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"Move": true,
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"OpenWriterAt": true,
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"PublicLink": false,
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"Purge": true,
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"PutStream": true,
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"PutUnchecked": false,
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"ReadMetadata": true,
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"ReadMimeType": false,
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"ServerSideAcrossConfigs": false,
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"SetTier": false,
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"SetWrapper": false,
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"Shutdown": false,
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"SlowHash": true,
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"SlowModTime": false,
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"UnWrap": false,
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"UserInfo": false,
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"UserMetadata": true,
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"WrapFs": false,
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"WriteMetadata": true,
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"WriteMimeType": false
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},
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// Names of hashes available
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"Hashes": [
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"md5",
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"sha1",
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"whirlpool",
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"crc32",
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"sha256",
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"dropbox",
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"mailru",
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"quickxor"
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],
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"Name": "local", // Name as created
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"Precision": 1, // Precision of timestamps in ns
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"Root": "/", // Path as created
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"String": "Local file system at /", // how the remote will appear in logs
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// Information about the system metadata for this backend
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"MetadataInfo": {
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"System": {
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"atime": {
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"Help": "Time of last access",
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"Type": "RFC 3339",
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"Example": "2006-01-02T15:04:05.999999999Z07:00"
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},
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"btime": {
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"Help": "Time of file birth (creation)",
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"Type": "RFC 3339",
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"Example": "2006-01-02T15:04:05.999999999Z07:00"
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},
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"gid": {
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"Help": "Group ID of owner",
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"Type": "decimal number",
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"Example": "500"
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},
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"mode": {
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"Help": "File type and mode",
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"Type": "octal, unix style",
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"Example": "0100664"
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},
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"mtime": {
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"Help": "Time of last modification",
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"Type": "RFC 3339",
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"Example": "2006-01-02T15:04:05.999999999Z07:00"
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},
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"rdev": {
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"Help": "Device ID (if special file)",
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"Type": "hexadecimal",
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"Example": "1abc"
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},
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"uid": {
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"Help": "User ID of owner",
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"Type": "decimal number",
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"Example": "500"
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}
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},
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"Help": "Textual help string\n"
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}
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}
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` + "```" + `
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@ -40,6 +40,8 @@ type RegInfo struct {
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Aliases []string
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// Hide - if set don't show in the configurator
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Hide bool
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// MetadataInfo help about the metadata in use in this backend
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MetadataInfo *MetadataInfo
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}
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// FileName returns the on disk file name for this backend
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@ -1384,8 +1384,13 @@ func Run(t *testing.T, opt *Opt) {
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skipIfNotOk(t)
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features := f.Features()
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obj := findObject(ctx, t, f, file1.Path)
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do, ok := obj.(fs.Metadataer)
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if !ok {
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do, objectHasMetadata := obj.(fs.Metadataer)
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if objectHasMetadata || features.ReadMetadata || features.WriteMetadata || features.UserMetadata {
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fsInfo, _, _, _, err := fs.ParseRemote(fs.ConfigString(f))
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require.NoError(t, err)
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require.NotNil(t, fsInfo.MetadataInfo, "Object declares metadata support but no MetadataInfo in RegInfo")
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}
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if !objectHasMetadata {
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require.False(t, features.ReadMetadata, "Features.ReadMetadata is set but Object.Metadata method not found")
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t.Skip("Metadata method not supported")
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}
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