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package weed_server
import (
"context"
"io"
"net/http"
"path"
"strconv"
"strings"
"time"
"github.com/chrislusf/seaweedfs/weed/filer2"
"github.com/chrislusf/seaweedfs/weed/glog"
"github.com/chrislusf/seaweedfs/weed/operation"
"github.com/chrislusf/seaweedfs/weed/pb/filer_pb"
"github.com/chrislusf/seaweedfs/weed/security"
"github.com/chrislusf/seaweedfs/weed/stats"
"github.com/chrislusf/seaweedfs/weed/util"
)
func (fs *FilerServer) autoChunk(ctx context.Context, w http.ResponseWriter, r *http.Request,
replication string, collection string, dataCenter string) bool {
if r.Method != "POST" {
glog.V(4).Infoln("AutoChunking not supported for method", r.Method)
return false
}
// autoChunking can be set at the command-line level or as a query param. Query param overrides command-line
query := r.URL.Query()
parsedMaxMB, _ := strconv.ParseInt(query.Get("maxMB"), 10, 32)
maxMB := int32(parsedMaxMB)
if maxMB <= 0 && fs.option.MaxMB > 0 {
maxMB = int32(fs.option.MaxMB)
}
if maxMB <= 0 {
glog.V(4).Infoln("AutoChunking not enabled")
return false
}
glog.V(4).Infoln("AutoChunking level set to", maxMB, "(MB)")
chunkSize := 1024 * 1024 * maxMB
contentLength := int64(0)
if contentLengthHeader := r.Header["Content-Length"]; len(contentLengthHeader) == 1 {
contentLength, _ = strconv.ParseInt(contentLengthHeader[0], 10, 64)
if contentLength <= int64(chunkSize) {
glog.V(4).Infoln("Content-Length of", contentLength, "is less than the chunk size of", chunkSize, "so autoChunking will be skipped.")
return false
}
}
if contentLength <= 0 {
glog.V(4).Infoln("Content-Length value is missing or unexpected so autoChunking will be skipped.")
return false
}
reply, err := fs.doAutoChunk(ctx, w, r, contentLength, chunkSize, replication, collection, dataCenter)
if err != nil {
writeJsonError(w, r, http.StatusInternalServerError, err)
} else if reply != nil {
writeJsonQuiet(w, r, http.StatusCreated, reply)
}
return true
}
func (fs *FilerServer) doAutoChunk(ctx context.Context, w http.ResponseWriter, r *http.Request,
contentLength int64, chunkSize int32, replication string, collection string, dataCenter string) (filerResult *FilerPostResult, replyerr error) {
stats.FilerRequestCounter.WithLabelValues("postAutoChunk").Inc()
start := time.Now()
defer func() {
stats.FilerRequestHistogram.WithLabelValues("postAutoChunk").Observe(time.Since(start).Seconds())
}()
multipartReader, multipartReaderErr := r.MultipartReader()
if multipartReaderErr != nil {
return nil, multipartReaderErr
}
part1, part1Err := multipartReader.NextPart()
if part1Err != nil {
return nil, part1Err
}
fileName := part1.FileName()
if fileName != "" {
fileName = path.Base(fileName)
}
var fileChunks []*filer_pb.FileChunk
chunkOffset := int64(0)
for chunkOffset < contentLength {
limitedReader := io.LimitReader(part1, int64(chunkSize))
// assign one file id for one chunk
fileId, urlLocation, auth, assignErr := fs.assignNewFileInfo(w, r, replication, collection, dataCenter)
if assignErr != nil {
return nil, assignErr
}
// upload the chunk to the volume server
chunkName := fileName + "_chunk_" + strconv.FormatInt(int64(len(fileChunks)+1), 10)
uploadedSize, uploadErr := fs.doUpload(urlLocation, w, r, limitedReader, chunkName, "", fileId, auth)
if uploadErr != nil {
return nil, uploadErr
}
// if last chunk exhausted the reader exactly at the border
if uploadedSize == 0 {
break
}
// Save to chunk manifest structure
fileChunks = append(fileChunks,
&filer_pb.FileChunk{
FileId: fileId,
Offset: chunkOffset,
Size: uint64(uploadedSize),
Mtime: time.Now().UnixNano(),
},
)
glog.V(4).Infof("uploaded %s chunk %d to %s [%d,%d) of %d", fileName, len(fileChunks), fileId, chunkOffset, chunkOffset+int64(uploadedSize), contentLength)
// if last chunk was not at full chunk size, but already exhausted the reader
if uploadedSize < int64(chunkSize) {
break
}
// reset variables for the next chunk
chunkOffset = chunkOffset + int64(uploadedSize)
}
path := r.URL.Path
if strings.HasSuffix(path, "/") {
if fileName != "" {
path += fileName
}
}
glog.V(4).Infoln("saving", path)
entry := &filer2.Entry{
FullPath: filer2.FullPath(path),
Attr: filer2.Attr{
Mtime: time.Now(),
Crtime: time.Now(),
Mode: 0660,
Uid: OS_UID,
Gid: OS_GID,
Replication: replication,
Collection: collection,
TtlSec: int32(util.ParseInt(r.URL.Query().Get("ttl"), 0)),
},
Chunks: fileChunks,
}
filerResult = &FilerPostResult{
Name: fileName,
Size: chunkOffset,
}
if dbErr := fs.filer.CreateEntry(ctx, entry, false); dbErr != nil {
fs.filer.DeleteChunks(entry.Chunks)
replyerr = dbErr
filerResult.Error = dbErr.Error()
glog.V(0).Infof("failing to write %s to filer server : %v", path, dbErr)
return
}
return
}
func (fs *FilerServer) doUpload(urlLocation string, w http.ResponseWriter, r *http.Request,
limitedReader io.Reader, fileName string, contentType string, fileId string, auth security.EncodedJwt) (size int64, err error) {
stats.FilerRequestCounter.WithLabelValues("postAutoChunkUpload").Inc()
start := time.Now()
defer func() {
stats.FilerRequestHistogram.WithLabelValues("postAutoChunkUpload").Observe(time.Since(start).Seconds())
}()
uploadResult, uploadError := operation.Upload(urlLocation, fileName, limitedReader, false, contentType, nil, auth)
if uploadError != nil {
return 0, uploadError
}
return int64(uploadResult.Size), nil
}
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