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75 lines
2.1 KiB
75 lines
2.1 KiB
package filer
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import (
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"context"
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"fmt"
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"os"
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"time"
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"github.com/chrislusf/seaweedfs/weed/operation"
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"github.com/chrislusf/seaweedfs/weed/pb/filer_pb"
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"github.com/chrislusf/seaweedfs/weed/util"
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)
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func (f *Filer) appendToFile(targetFile string, data []byte) error {
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assignResult, uploadResult, err2 := f.assignAndUpload(targetFile, data)
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if err2 != nil {
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return err2
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}
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// find out existing entry
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fullpath := util.FullPath(targetFile)
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entry, err := f.FindEntry(context.Background(), fullpath)
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var offset int64 = 0
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if err == filer_pb.ErrNotFound {
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entry = &Entry{
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FullPath: fullpath,
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Attr: Attr{
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Crtime: time.Now(),
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Mtime: time.Now(),
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Mode: os.FileMode(0644),
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Uid: OS_UID,
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Gid: OS_GID,
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},
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}
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} else {
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offset = int64(TotalSize(entry.Chunks))
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}
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// append to existing chunks
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entry.Chunks = append(entry.Chunks, uploadResult.ToPbFileChunk(assignResult.Fid, offset))
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// update the entry
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err = f.CreateEntry(context.Background(), entry, false, false, nil)
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return err
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}
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func (f *Filer) assignAndUpload(targetFile string, data []byte) (*operation.AssignResult, *operation.UploadResult, error) {
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// assign a volume location
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rule := f.FilerConf.MatchStorageRule(targetFile)
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assignRequest := &operation.VolumeAssignRequest{
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Count: 1,
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Collection: util.Nvl(f.metaLogCollection, rule.Collection),
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Replication: util.Nvl(f.metaLogReplication, rule.Replication),
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WritableVolumeCount: 1,
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}
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assignResult, err := operation.Assign(f.GetMaster(), f.GrpcDialOption, assignRequest)
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if err != nil {
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return nil, nil, fmt.Errorf("AssignVolume: %v", err)
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}
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if assignResult.Error != "" {
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return nil, nil, fmt.Errorf("AssignVolume error: %v", assignResult.Error)
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}
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// upload data
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targetUrl := "http://" + assignResult.Url + "/" + assignResult.Fid
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uploadResult, err := operation.UploadData(targetUrl, "", f.Cipher, data, false, "", nil, assignResult.Auth)
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if err != nil {
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return nil, nil, fmt.Errorf("upload data %s: %v", targetUrl, err)
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}
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// println("uploaded to", targetUrl)
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return assignResult, uploadResult, nil
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}
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