seaweedfs/weed/server/filer_server_handlers_write_autochunk.go

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package weed_server
import (
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"context"
"crypto/md5"
"fmt"
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"hash"
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"io"
"io/ioutil"
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"net/http"
"os"
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"path"
"strconv"
"strings"
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"time"
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"github.com/chrislusf/seaweedfs/weed/filer"
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"github.com/chrislusf/seaweedfs/weed/glog"
"github.com/chrislusf/seaweedfs/weed/operation"
"github.com/chrislusf/seaweedfs/weed/pb/filer_pb"
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"github.com/chrislusf/seaweedfs/weed/security"
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"github.com/chrislusf/seaweedfs/weed/stats"
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"github.com/chrislusf/seaweedfs/weed/util"
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)
func (fs *FilerServer) autoChunk(ctx context.Context, w http.ResponseWriter, r *http.Request, replication string, collection string, dataCenter string, rack string, ttlSec int32, ttlString string, fsync bool) {
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// 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)
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if maxMB <= 0 && fs.option.MaxMB > 0 {
maxMB = int32(fs.option.MaxMB)
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}
chunkSize := 1024 * 1024 * maxMB
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stats.FilerRequestCounter.WithLabelValues("postAutoChunk").Inc()
start := time.Now()
defer func() {
stats.FilerRequestHistogram.WithLabelValues("postAutoChunk").Observe(time.Since(start).Seconds())
}()
var reply *FilerPostResult
var err error
var md5bytes []byte
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if r.Method == "POST" {
if r.Header.Get("Content-Type") == "" && strings.HasSuffix(r.URL.Path, "/") {
reply, err = fs.mkdir(ctx, w, r)
} else {
reply, md5bytes, err = fs.doPostAutoChunk(ctx, w, r, chunkSize, replication, collection, dataCenter, rack, ttlSec, ttlString, fsync)
}
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} else {
reply, md5bytes, err = fs.doPutAutoChunk(ctx, w, r, chunkSize, replication, collection, dataCenter, rack, ttlSec, ttlString, fsync)
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}
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if err != nil {
writeJsonError(w, r, http.StatusInternalServerError, err)
} else if reply != nil {
if len(md5bytes) > 0 {
w.Header().Set("Content-MD5", util.Base64Encode(md5bytes))
}
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writeJsonQuiet(w, r, http.StatusCreated, reply)
}
}
func (fs *FilerServer) doPostAutoChunk(ctx context.Context, w http.ResponseWriter, r *http.Request, chunkSize int32, replication string, collection string, dataCenter string, rack string, ttlSec int32, ttlString string, fsync bool) (filerResult *FilerPostResult, md5bytes []byte, replyerr error) {
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multipartReader, multipartReaderErr := r.MultipartReader()
if multipartReaderErr != nil {
return nil, nil, multipartReaderErr
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}
part1, part1Err := multipartReader.NextPart()
if part1Err != nil {
return nil, nil, part1Err
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}
fileName := part1.FileName()
if fileName != "" {
fileName = path.Base(fileName)
}
contentType := part1.Header.Get("Content-Type")
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if contentType == "application/octet-stream" {
contentType = ""
}
fileChunks, md5Hash, chunkOffset, err := fs.uploadReaderToChunks(w, r, part1, chunkSize, replication, collection, dataCenter, rack, ttlString, fileName, contentType, fsync)
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if err != nil {
return nil, nil, err
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}
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fileChunks, replyerr = filer.MaybeManifestize(fs.saveAsChunk(replication, collection, dataCenter, rack, ttlString, fsync), fileChunks)
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if replyerr != nil {
glog.V(0).Infof("manifestize %s: %v", r.RequestURI, replyerr)
return
}
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md5bytes = md5Hash.Sum(nil)
filerResult, replyerr = fs.saveMetaData(ctx, r, fileName, replication, collection, ttlSec, contentType, md5bytes, fileChunks, chunkOffset)
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return
}
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func (fs *FilerServer) doPutAutoChunk(ctx context.Context, w http.ResponseWriter, r *http.Request, chunkSize int32, replication string, collection string, dataCenter string, rack string, ttlSec int32, ttlString string, fsync bool) (filerResult *FilerPostResult, md5bytes []byte, replyerr error) {
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fileName := ""
contentType := ""
fileChunks, md5Hash, chunkOffset, err := fs.uploadReaderToChunks(w, r, r.Body, chunkSize, replication, collection, dataCenter, rack, ttlString, fileName, contentType, fsync)
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if err != nil {
return nil, nil, err
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}
fileChunks, replyerr = filer.MaybeManifestize(fs.saveAsChunk(replication, collection, dataCenter, rack, ttlString, fsync), fileChunks)
if replyerr != nil {
glog.V(0).Infof("manifestize %s: %v", r.RequestURI, replyerr)
return
}
md5bytes = md5Hash.Sum(nil)
filerResult, replyerr = fs.saveMetaData(ctx, r, fileName, replication, collection, ttlSec, contentType, md5bytes, fileChunks, chunkOffset)
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return
}
func (fs *FilerServer) saveMetaData(ctx context.Context, r *http.Request, fileName string, replication string, collection string, ttlSec int32, contentType string, md5bytes []byte, fileChunks []*filer_pb.FileChunk, chunkOffset int64) (filerResult *FilerPostResult, replyerr error) {
// detect file mode
modeStr := r.URL.Query().Get("mode")
if modeStr == "" {
modeStr = "0660"
}
mode, err := strconv.ParseUint(modeStr, 8, 32)
if err != nil {
glog.Errorf("Invalid mode format: %s, use 0660 by default", modeStr)
mode = 0660
}
// fix the path
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path := r.URL.Path
if strings.HasSuffix(path, "/") {
if fileName != "" {
path += fileName
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}
}
// fix the crTime
existingEntry, err := fs.filer.FindEntry(ctx, util.FullPath(path))
crTime := time.Now()
if err == nil && existingEntry != nil {
crTime = existingEntry.Crtime
}
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glog.V(4).Infoln("saving", path)
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entry := &filer.Entry{
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FullPath: util.FullPath(path),
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Attr: filer.Attr{
Mtime: time.Now(),
Crtime: crTime,
Mode: os.FileMode(mode),
Uid: OS_UID,
Gid: OS_GID,
Replication: replication,
Collection: collection,
TtlSec: ttlSec,
Mime: contentType,
Md5: md5bytes,
FileSize: uint64(chunkOffset),
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},
Chunks: fileChunks,
}
filerResult = &FilerPostResult{
Name: fileName,
Size: chunkOffset,
}
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fs.saveAmzMetaData(r, entry)
if dbErr := fs.filer.CreateEntry(ctx, entry, false, false, nil); dbErr != nil {
fs.filer.DeleteChunks(entry.Chunks)
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replyerr = dbErr
filerResult.Error = dbErr.Error()
glog.V(0).Infof("failing to write %s to filer server : %v", path, dbErr)
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}
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return filerResult, replyerr
}
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func (fs *FilerServer) uploadReaderToChunks(w http.ResponseWriter, r *http.Request, reader io.Reader, chunkSize int32, replication string, collection string, dataCenter string, rack string, ttlString string, fileName string, contentType string, fsync bool) ([]*filer_pb.FileChunk, hash.Hash, int64, error) {
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var fileChunks []*filer_pb.FileChunk
md5Hash := md5.New()
var partReader = ioutil.NopCloser(io.TeeReader(reader, md5Hash))
chunkOffset := int64(0)
for {
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limitedReader := io.LimitReader(partReader, int64(chunkSize))
// assign one file id for one chunk
fileId, urlLocation, auth, assignErr := fs.assignNewFileInfo(replication, collection, dataCenter, rack, ttlString, fsync)
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if assignErr != nil {
return nil, nil, 0, assignErr
}
// upload the chunk to the volume server
uploadResult, uploadErr := fs.doUpload(urlLocation, w, r, limitedReader, fileName, contentType, nil, auth)
if uploadErr != nil {
return nil, nil, 0, uploadErr
}
// if last chunk exhausted the reader exactly at the border
if uploadResult.Size == 0 {
break
}
// Save to chunk manifest structure
fileChunks = append(fileChunks, uploadResult.ToPbFileChunk(fileId, chunkOffset))
glog.V(4).Infof("uploaded %s chunk %d to %s [%d,%d)", fileName, len(fileChunks), fileId, chunkOffset, chunkOffset+int64(uploadResult.Size))
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// reset variables for the next chunk
chunkOffset = chunkOffset + int64(uploadResult.Size)
// if last chunk was not at full chunk size, but already exhausted the reader
if int64(uploadResult.Size) < int64(chunkSize) {
break
}
}
return fileChunks, md5Hash, chunkOffset, nil
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}
func (fs *FilerServer) doUpload(urlLocation string, w http.ResponseWriter, r *http.Request, limitedReader io.Reader, fileName string, contentType string, pairMap map[string]string, auth security.EncodedJwt) (*operation.UploadResult, error) {
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stats.FilerRequestCounter.WithLabelValues("postAutoChunkUpload").Inc()
start := time.Now()
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defer func() {
stats.FilerRequestHistogram.WithLabelValues("postAutoChunkUpload").Observe(time.Since(start).Seconds())
}()
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uploadResult, err, _ := operation.Upload(urlLocation, fileName, fs.option.Cipher, limitedReader, false, contentType, pairMap, auth)
return uploadResult, err
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}
func (fs *FilerServer) saveAsChunk(replication string, collection string, dataCenter string, rack string, ttlString string, fsync bool) filer.SaveDataAsChunkFunctionType {
return func(reader io.Reader, name string, offset int64) (*filer_pb.FileChunk, string, string, error) {
// assign one file id for one chunk
fileId, urlLocation, auth, assignErr := fs.assignNewFileInfo(replication, collection, dataCenter, rack, ttlString, fsync)
if assignErr != nil {
return nil, "", "", assignErr
}
// upload the chunk to the volume server
uploadResult, uploadErr, _ := operation.Upload(urlLocation, name, fs.option.Cipher, reader, false, "", nil, auth)
if uploadErr != nil {
return nil, "", "", uploadErr
}
return uploadResult.ToPbFileChunk(fileId, offset), collection, replication, nil
}
}
func (fs *FilerServer) mkdir(ctx context.Context, w http.ResponseWriter, r *http.Request) (filerResult *FilerPostResult, replyerr error) {
// detect file mode
modeStr := r.URL.Query().Get("mode")
if modeStr == "" {
modeStr = "0660"
}
mode, err := strconv.ParseUint(modeStr, 8, 32)
if err != nil {
glog.Errorf("Invalid mode format: %s, use 0660 by default", modeStr)
mode = 0660
}
// fix the path
path := r.URL.Path
if strings.HasSuffix(path, "/") {
path = path[:len(path)-1]
}
existingEntry, err := fs.filer.FindEntry(ctx, util.FullPath(path))
if err == nil && existingEntry != nil {
replyerr = fmt.Errorf("dir %s already exists", path)
return
}
glog.V(4).Infoln("mkdir", path)
entry := &filer.Entry{
FullPath: util.FullPath(path),
Attr: filer.Attr{
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Mtime: time.Now(),
Crtime: time.Now(),
Mode: os.FileMode(mode) | os.ModeDir,
Uid: OS_UID,
Gid: OS_GID,
},
}
filerResult = &FilerPostResult{
Name: util.FullPath(path).Name(),
}
if dbErr := fs.filer.CreateEntry(ctx, entry, false, false, nil); dbErr != nil {
replyerr = dbErr
filerResult.Error = dbErr.Error()
glog.V(0).Infof("failing to create dir %s on filer server : %v", path, dbErr)
}
return filerResult, replyerr
}
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func (fs *FilerServer) saveAmzMetaData(r *http.Request, entry *filer.Entry) {
var (
storageClass = "X-Amz-Storage-Class"
objectTagging = "X-Amz-Tagging"
userMetaPrefix = "X-Amz-Meta-"
)
if entry.Extended == nil {
entry.Extended = make(map[string][]byte)
}
if sc := r.Header.Get(storageClass); sc != "" {
entry.Extended[storageClass] = []byte(sc)
}
if tags := r.Header.Get(objectTagging); tags != "" {
for _, v := range strings.Split(tags, "&") {
tag := strings.Split(v, "=")
if len(tag) == 2 {
entry.Extended[objectTagging+"-"+tag[0]] = []byte(tag[1])
}
}
}
for header, values := range r.Header {
if strings.HasPrefix(header, userMetaPrefix) {
for _, value := range values {
entry.Extended[header] = []byte(value)
}
}
}
}