seaweedfs/weed/pb/filer_pb/filer_pb_helper.go

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package filer_pb
import (
"context"
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"errors"
"fmt"
"strings"
"github.com/chrislusf/seaweedfs/weed/glog"
"github.com/chrislusf/seaweedfs/weed/storage/needle"
)
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func ToFileIdObject(fileIdStr string) (*FileId, error) {
t, err := needle.ParseFileIdFromString(fileIdStr)
if err != nil {
return nil, err
}
return &FileId{
VolumeId: uint32(t.VolumeId),
Cookie: uint32(t.Cookie),
FileKey: uint64(t.Key),
}, nil
}
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func (fid *FileId) toFileIdString() string {
return needle.NewFileId(needle.VolumeId(fid.VolumeId), fid.FileKey, fid.Cookie).String()
}
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func (c *FileChunk) GetFileIdString() string {
if c.FileId != "" {
return c.FileId
}
if c.Fid != nil {
c.FileId = c.Fid.toFileIdString()
return c.FileId
}
return ""
}
func BeforeEntrySerialization(chunks []*FileChunk) {
for _, chunk := range chunks {
if chunk.FileId != "" {
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if fid, err := ToFileIdObject(chunk.FileId); err == nil {
chunk.Fid = fid
chunk.FileId = ""
}
}
if chunk.SourceFileId != "" {
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if fid, err := ToFileIdObject(chunk.SourceFileId); err == nil {
chunk.SourceFid = fid
chunk.SourceFileId = ""
}
}
}
}
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func EnsureFid(chunk *FileChunk) {
if chunk.Fid != nil {
return
}
if fid, err := ToFileIdObject(chunk.FileId); err == nil {
chunk.Fid = fid
}
}
func AfterEntryDeserialization(chunks []*FileChunk) {
for _, chunk := range chunks {
if chunk.Fid != nil && chunk.FileId == "" {
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chunk.FileId = chunk.Fid.toFileIdString()
}
if chunk.SourceFid != nil && chunk.SourceFileId == "" {
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chunk.SourceFileId = chunk.SourceFid.toFileIdString()
}
}
}
func CreateEntry(client SeaweedFilerClient, request *CreateEntryRequest) error {
resp, err := client.CreateEntry(context.Background(), request)
if err != nil {
glog.V(1).Infof("create entry %s/%s %v: %v", request.Directory, request.Entry.Name, request.OExcl, err)
return fmt.Errorf("CreateEntry: %v", err)
}
if resp.Error != "" {
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glog.V(1).Infof("create entry %s/%s %v: %v", request.Directory, request.Entry.Name, request.OExcl, resp.Error)
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return fmt.Errorf("CreateEntry : %v", resp.Error)
}
return nil
}
func LookupEntry(client SeaweedFilerClient, request *LookupDirectoryEntryRequest) (*LookupDirectoryEntryResponse, error) {
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resp, err := client.LookupDirectoryEntry(context.Background(), request)
if err != nil {
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if err == ErrNotFound || strings.Contains(err.Error(), ErrNotFound.Error()) {
return nil, ErrNotFound
}
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glog.V(3).Infof("read %s/%v: %v", request.Directory, request.Name, err)
return nil, fmt.Errorf("LookupEntry1: %v", err)
}
if resp.Entry == nil {
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return nil, ErrNotFound
}
return resp, nil
}
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var ErrNotFound = errors.New("filer: no entry is found in filer store")