/
filemetaworker.go
168 lines (156 loc) · 4.64 KB
/
filemetaworker.go
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package sdk
import (
"bytes"
"context"
"encoding/json"
"fmt"
"io"
"mime/multipart"
"net/http"
"time"
"github.com/0chain/errors"
"github.com/0chain/gosdk/zboxcore/blockchain"
"github.com/0chain/gosdk/zboxcore/fileref"
l "github.com/0chain/gosdk/zboxcore/logger"
"github.com/0chain/gosdk/zboxcore/zboxutil"
)
type fileMetaResponse struct {
fileref *fileref.FileRef
blobberIdx int
err error
}
func (req *ListRequest) getFileMetaInfoFromBlobber(blobber *blockchain.StorageNode, blobberIdx int, rspCh chan<- *fileMetaResponse) {
body := new(bytes.Buffer)
formWriter := multipart.NewWriter(body)
var fileRef *fileref.FileRef
var err error
fileMetaRetFn := func() {
rspCh <- &fileMetaResponse{fileref: fileRef, blobberIdx: blobberIdx, err: err}
}
defer fileMetaRetFn()
if len(req.remotefilepath) > 0 {
req.remotefilepathhash = fileref.GetReferenceLookup(req.allocationID, req.remotefilepath)
}
if singleClientMode {
fileMetaHash := fileref.GetCacheKey(req.remotefilepathhash, blobber.ID)
cachedRef, ok := fileref.GetFileRef(fileMetaHash)
if ok {
fileRef = &cachedRef
return
}
defer func() {
if fileRef != nil && err == nil {
fileref.StoreFileRef(fileMetaHash, *fileRef)
}
}()
}
err = formWriter.WriteField("path_hash", req.remotefilepathhash)
if err != nil {
l.Logger.Error("File meta info request error: ", err.Error())
return
}
if req.authToken != nil {
authTokenBytes, err := json.Marshal(req.authToken)
if err != nil {
l.Logger.Error(blobber.Baseurl, " creating auth token bytes", err)
return
}
err = formWriter.WriteField("auth_token", string(authTokenBytes))
if err != nil {
l.Logger.Error(blobber.Baseurl, "error writing field", err)
return
}
}
formWriter.Close()
httpreq, err := zboxutil.NewFileMetaRequest(blobber.Baseurl, req.allocationID, req.allocationTx, body)
if err != nil {
l.Logger.Error("File meta info request error: ", err.Error())
return
}
httpreq.Header.Add("Content-Type", formWriter.FormDataContentType())
ctx, cncl := context.WithTimeout(req.ctx, (time.Second * 30))
err = zboxutil.HttpDo(ctx, cncl, httpreq, func(resp *http.Response, err error) error {
if err != nil {
l.Logger.Error("GetFileMeta : ", err)
return err
}
defer resp.Body.Close()
resp_body, err := io.ReadAll(resp.Body)
if err != nil {
return errors.Wrap(err, "Error: Resp")
}
// l.Logger.Info("File Meta result:", string(resp_body))
l.Logger.Debug("File meta response status: ", resp.Status)
if resp.StatusCode == http.StatusOK {
err = json.Unmarshal(resp_body, &fileRef)
if err != nil {
return errors.Wrap(err, "file meta data response parse error")
}
return nil
}
return fmt.Errorf("unexpected response. status code: %d, response: %s",
resp.StatusCode, string(resp_body))
})
}
func (req *ListRequest) getFileMetaFromBlobbers() []*fileMetaResponse {
numList := len(req.blobbers)
rspCh := make(chan *fileMetaResponse, numList)
for i := 0; i < numList; i++ {
go req.getFileMetaInfoFromBlobber(req.blobbers[i], i, rspCh)
}
fileInfos := make([]*fileMetaResponse, len(req.blobbers))
for i := 0; i < numList; i++ {
ch := <-rspCh
fileInfos[ch.blobberIdx] = ch
}
return fileInfos
}
func (req *ListRequest) getFileConsensusFromBlobbers() (zboxutil.Uint128, zboxutil.Uint128, *fileref.FileRef, []*fileMetaResponse) {
lR := req.getFileMetaFromBlobbers()
var selected *fileMetaResponse
foundMask := zboxutil.NewUint128(0)
deleteMask := zboxutil.NewUint128(0)
req.consensus = 0
retMap := make(map[string]int)
for i := 0; i < len(lR); i++ {
ti := lR[i]
if ti.err != nil || ti.fileref == nil {
continue
}
fileMetaHash := ti.fileref.FileMetaHash
retMap[fileMetaHash]++
if retMap[fileMetaHash] > req.consensus {
req.consensus = retMap[fileMetaHash]
selected = ti
}
if req.isConsensusOk() {
selected = ti
break
} else {
selected = nil
}
}
if selected == nil {
l.Logger.Error("File consensus not found for ", req.remotefilepath)
for i := 0; i < len(lR); i++ {
ti := lR[i]
if ti.err != nil || ti.fileref == nil {
continue
}
shift := zboxutil.NewUint128(1).Lsh(uint64(ti.blobberIdx))
deleteMask = deleteMask.Or(shift)
}
return foundMask, deleteMask, nil, nil
}
for i := 0; i < len(lR); i++ {
if lR[i].fileref != nil && selected.fileref.FileMetaHash == lR[i].fileref.FileMetaHash {
shift := zboxutil.NewUint128(1).Lsh(uint64(lR[i].blobberIdx))
foundMask = foundMask.Or(shift)
} else if lR[i].fileref != nil {
shift := zboxutil.NewUint128(1).Lsh(uint64(lR[i].blobberIdx))
deleteMask = deleteMask.Or(shift)
}
}
return foundMask, deleteMask, selected.fileref, lR
}
// return upload mask and delete mask