seaweedfs/weed/filer/entry.go

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package filer
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import (
"os"
"time"
"github.com/seaweedfs/seaweedfs/weed/pb/filer_pb"
"github.com/seaweedfs/seaweedfs/weed/util"
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)
type Attr struct {
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Mtime time.Time // time of last modification
Crtime time.Time // time of creation (OS X only)
Mode os.FileMode // file mode
Uid uint32 // owner uid
Gid uint32 // group gid
Mime string // mime type
TtlSec int32 // ttl in seconds
UserName string
GroupNames []string
SymlinkTarget string
Md5 []byte
FileSize uint64
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Rdev uint32
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Inode uint64
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}
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func (attr Attr) IsDirectory() bool {
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return attr.Mode&os.ModeDir > 0
}
type Entry struct {
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util.FullPath
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Attr
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Extended map[string][]byte
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// the following is for files
Chunks []*filer_pb.FileChunk `json:"chunks,omitempty"`
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HardLinkId HardLinkId
HardLinkCounter int32
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Content []byte
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Remote *filer_pb.RemoteEntry
Quota int64
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}
func (entry *Entry) Size() uint64 {
return maxUint64(maxUint64(TotalSize(entry.Chunks), entry.FileSize), uint64(len(entry.Content)))
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}
func (entry *Entry) Timestamp() time.Time {
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if entry.IsDirectory() {
return entry.Crtime
} else {
return entry.Mtime
}
}
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func (entry *Entry) ShallowClone() *Entry {
if entry == nil {
return nil
}
newEntry := &Entry{}
newEntry.FullPath = entry.FullPath
newEntry.Attr = entry.Attr
newEntry.Chunks = entry.Chunks
newEntry.Extended = entry.Extended
newEntry.HardLinkId = entry.HardLinkId
newEntry.HardLinkCounter = entry.HardLinkCounter
newEntry.Content = entry.Content
newEntry.Remote = entry.Remote
newEntry.Quota = entry.Quota
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return newEntry
}
func (entry *Entry) ToProtoEntry() *filer_pb.Entry {
if entry == nil {
return nil
}
message := &filer_pb.Entry{}
message.Name = entry.FullPath.Name()
entry.ToExistingProtoEntry(message)
return message
}
func (entry *Entry) ToExistingProtoEntry(message *filer_pb.Entry) {
if entry == nil {
return
}
message.IsDirectory = entry.IsDirectory()
message.Attributes = EntryAttributeToPb(entry)
message.Chunks = entry.Chunks
message.Extended = entry.Extended
message.HardLinkId = entry.HardLinkId
message.HardLinkCounter = entry.HardLinkCounter
message.Content = entry.Content
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message.RemoteEntry = entry.Remote
message.Quota = entry.Quota
}
func FromPbEntryToExistingEntry(message *filer_pb.Entry, fsEntry *Entry) {
fsEntry.Attr = PbToEntryAttribute(message.Attributes)
fsEntry.Chunks = message.Chunks
fsEntry.Extended = message.Extended
fsEntry.HardLinkId = HardLinkId(message.HardLinkId)
fsEntry.HardLinkCounter = message.HardLinkCounter
fsEntry.Content = message.Content
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fsEntry.Remote = message.RemoteEntry
fsEntry.Quota = message.Quota
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fsEntry.FileSize = FileSize(message)
}
func (entry *Entry) ToProtoFullEntry() *filer_pb.FullEntry {
if entry == nil {
return nil
}
dir, _ := entry.FullPath.DirAndName()
return &filer_pb.FullEntry{
Dir: dir,
Entry: entry.ToProtoEntry(),
}
}
func FromPbEntry(dir string, entry *filer_pb.Entry) *Entry {
t := &Entry{}
t.FullPath = util.NewFullPath(dir, entry.Name)
FromPbEntryToExistingEntry(entry, t)
return t
}
func maxUint64(x, y uint64) uint64 {
if x > y {
return x
}
return y
}