seaweedfs/weed/server/filer_server_handlers_write.go

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package weed_server
import (
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"context"
"crypto/md5"
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"encoding/json"
"errors"
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"fmt"
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"io"
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"io/ioutil"
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"mime"
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"net/http"
"net/url"
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"os"
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filenamePath "path"
"strconv"
"strings"
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"time"
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"github.com/chrislusf/seaweedfs/weed/filer2"
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"github.com/chrislusf/seaweedfs/weed/glog"
"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/security"
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"github.com/chrislusf/seaweedfs/weed/stats"
"github.com/chrislusf/seaweedfs/weed/storage/needle"
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"github.com/chrislusf/seaweedfs/weed/util"
)
var (
OS_UID = uint32(os.Getuid())
OS_GID = uint32(os.Getgid())
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)
type FilerPostResult struct {
Name string `json:"name,omitempty"`
Size int64 `json:"size,omitempty"`
Error string `json:"error,omitempty"`
Fid string `json:"fid,omitempty"`
Url string `json:"url,omitempty"`
}
func (fs *FilerServer) assignNewFileInfo(replication, collection, dataCenter, ttlString string, fsync bool) (fileId, urlLocation string, auth security.EncodedJwt, err error) {
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stats.FilerRequestCounter.WithLabelValues("assign").Inc()
start := time.Now()
defer func() { stats.FilerRequestHistogram.WithLabelValues("assign").Observe(time.Since(start).Seconds()) }()
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ar := &operation.VolumeAssignRequest{
Count: 1,
Replication: replication,
Collection: collection,
Ttl: ttlString,
DataCenter: dataCenter,
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}
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var altRequest *operation.VolumeAssignRequest
if dataCenter != "" {
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altRequest = &operation.VolumeAssignRequest{
Count: 1,
Replication: replication,
Collection: collection,
Ttl: ttlString,
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DataCenter: "",
}
}
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assignResult, ae := operation.Assign(fs.filer.GetMaster(), fs.grpcDialOption, ar, altRequest)
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if ae != nil {
glog.Errorf("failing to assign a file id: %v", ae)
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err = ae
return
}
fileId = assignResult.Fid
urlLocation = "http://" + assignResult.Url + "/" + assignResult.Fid
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if fsync {
urlLocation += "?fsync=true"
}
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auth = assignResult.Auth
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return
}
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func (fs *FilerServer) PostHandler(w http.ResponseWriter, r *http.Request) {
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ctx := context.Background()
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query := r.URL.Query()
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collection, replication, fsync := fs.detectCollection(r.RequestURI, query.Get("collection"), query.Get("replication"))
dataCenter := query.Get("dataCenter")
if dataCenter == "" {
dataCenter = fs.option.DataCenter
}
ttlString := r.URL.Query().Get("ttl")
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// read ttl in seconds
ttl, err := needle.ReadTTL(ttlString)
ttlSeconds := int32(0)
if err == nil {
ttlSeconds = int32(ttl.Minutes()) * 60
}
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if autoChunked := fs.autoChunk(ctx, w, r, replication, collection, dataCenter, ttlSeconds, ttlString, fsync); autoChunked {
return
}
if fs.option.Cipher {
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reply, err := fs.encrypt(ctx, w, r, replication, collection, dataCenter, ttlSeconds, ttlString, fsync)
if err != nil {
writeJsonError(w, r, http.StatusInternalServerError, err)
} else if reply != nil {
writeJsonQuiet(w, r, http.StatusCreated, reply)
}
return
}
fileId, urlLocation, auth, err := fs.assignNewFileInfo(replication, collection, dataCenter, ttlString, fsync)
if err != nil || fileId == "" || urlLocation == "" {
glog.V(0).Infof("fail to allocate volume for %s, collection:%s, datacenter:%s", r.URL.Path, collection, dataCenter)
writeJsonError(w, r, http.StatusInternalServerError, fmt.Errorf("fail to allocate volume for %s, collection:%s, datacenter:%s", r.URL.Path, collection, dataCenter))
return
}
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glog.V(4).Infof("write %s to %v", r.URL.Path, urlLocation)
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u, _ := url.Parse(urlLocation)
ret, md5value, err := fs.uploadToVolumeServer(r, u, auth, w, fileId)
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if err != nil {
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return
}
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if err = fs.updateFilerStore(ctx, r, w, replication, collection, ret, md5value, fileId, ttlSeconds); err != nil {
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return
}
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// send back post result
reply := FilerPostResult{
Name: ret.Name,
Size: int64(ret.Size),
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Error: ret.Error,
Fid: fileId,
Url: urlLocation,
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}
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setEtag(w, ret.ETag)
writeJsonQuiet(w, r, http.StatusCreated, reply)
}
// update metadata in filer store
func (fs *FilerServer) updateFilerStore(ctx context.Context, r *http.Request, w http.ResponseWriter, replication string,
collection string, ret *operation.UploadResult, md5value []byte, fileId string, ttlSeconds int32) (err error) {
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stats.FilerRequestCounter.WithLabelValues("postStoreWrite").Inc()
start := time.Now()
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defer func() {
stats.FilerRequestHistogram.WithLabelValues("postStoreWrite").Observe(time.Since(start).Seconds())
}()
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
}
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path := r.URL.Path
if strings.HasSuffix(path, "/") {
if ret.Name != "" {
path += ret.Name
}
}
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existingEntry, err := fs.filer.FindEntry(ctx, util.FullPath(path))
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crTime := time.Now()
if err == nil && existingEntry != nil {
crTime = existingEntry.Crtime
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}
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entry := &filer2.Entry{
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FullPath: util.FullPath(path),
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Attr: filer2.Attr{
Mtime: time.Now(),
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Crtime: crTime,
Mode: os.FileMode(mode),
Uid: OS_UID,
Gid: OS_GID,
Replication: replication,
Collection: collection,
TtlSec: ttlSeconds,
Mime: ret.Mime,
Md5: md5value,
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},
Chunks: []*filer_pb.FileChunk{{
FileId: fileId,
Size: uint64(ret.Size),
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Mtime: time.Now().UnixNano(),
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ETag: ret.ETag,
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}},
}
if entry.Attr.Mime == "" {
if ext := filenamePath.Ext(path); ext != "" {
entry.Attr.Mime = mime.TypeByExtension(ext)
}
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}
// glog.V(4).Infof("saving %s => %+v", path, entry)
if dbErr := fs.filer.CreateEntry(ctx, entry, false, false); dbErr != nil {
fs.filer.DeleteChunks(entry.Chunks)
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glog.V(0).Infof("failing to write %s to filer server : %v", path, dbErr)
writeJsonError(w, r, http.StatusInternalServerError, dbErr)
err = dbErr
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return
}
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return nil
}
// send request to volume server
func (fs *FilerServer) uploadToVolumeServer(r *http.Request, u *url.URL, auth security.EncodedJwt, w http.ResponseWriter, fileId string) (ret *operation.UploadResult, md5value []byte, err error) {
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stats.FilerRequestCounter.WithLabelValues("postUpload").Inc()
start := time.Now()
defer func() { stats.FilerRequestHistogram.WithLabelValues("postUpload").Observe(time.Since(start).Seconds()) }()
ret = &operation.UploadResult{}
md5Hash := md5.New()
body := r.Body
if r.Method == "PUT" {
// only PUT or large chunked files has Md5 in attributes
body = ioutil.NopCloser(io.TeeReader(r.Body, md5Hash))
}
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request := &http.Request{
Method: r.Method,
URL: u,
Proto: r.Proto,
ProtoMajor: r.ProtoMajor,
ProtoMinor: r.ProtoMinor,
Header: r.Header,
Body: body,
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Host: r.Host,
ContentLength: r.ContentLength,
}
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if auth != "" {
request.Header.Set("Authorization", "BEARER "+string(auth))
}
resp, doErr := util.Do(request)
if doErr != nil {
glog.Errorf("failing to connect to volume server %s: %v, %+v", r.RequestURI, doErr, r.Method)
writeJsonError(w, r, http.StatusInternalServerError, doErr)
err = doErr
return
}
defer func() {
io.Copy(ioutil.Discard, resp.Body)
resp.Body.Close()
}()
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respBody, raErr := ioutil.ReadAll(resp.Body)
if raErr != nil {
glog.V(0).Infoln("failing to upload to volume server", r.RequestURI, raErr.Error())
writeJsonError(w, r, http.StatusInternalServerError, raErr)
err = raErr
return
}
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glog.V(4).Infoln("post result", string(respBody))
unmarshalErr := json.Unmarshal(respBody, &ret)
if unmarshalErr != nil {
glog.V(0).Infoln("failing to read upload resonse", r.RequestURI, string(respBody))
writeJsonError(w, r, http.StatusInternalServerError, unmarshalErr)
err = unmarshalErr
return
}
if ret.Error != "" {
err = errors.New(ret.Error)
glog.V(0).Infoln("failing to post to volume server", r.RequestURI, ret.Error)
writeJsonError(w, r, http.StatusInternalServerError, err)
return
}
// find correct final path
path := r.URL.Path
if strings.HasSuffix(path, "/") {
if ret.Name != "" {
path += ret.Name
} else {
err = fmt.Errorf("can not to write to folder %s without a file name", path)
fs.filer.DeleteFileByFileId(fileId)
glog.V(0).Infoln("Can not to write to folder", path, "without a file name!")
writeJsonError(w, r, http.StatusInternalServerError, err)
return
}
}
// use filer calculated md5 ETag, instead of the volume server crc ETag
if r.Method == "PUT" {
md5value = md5Hash.Sum(nil)
}
ret.ETag = getEtag(resp)
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return
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}
// curl -X DELETE http://localhost:8888/path/to
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// curl -X DELETE http://localhost:8888/path/to?recursive=true
// curl -X DELETE http://localhost:8888/path/to?recursive=true&ignoreRecursiveError=true
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// curl -X DELETE http://localhost:8888/path/to?recursive=true&skipChunkDeletion=true
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func (fs *FilerServer) DeleteHandler(w http.ResponseWriter, r *http.Request) {
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isRecursive := r.FormValue("recursive") == "true"
if !isRecursive && fs.option.recursiveDelete {
if r.FormValue("recursive") != "false" {
isRecursive = true
}
}
ignoreRecursiveError := r.FormValue("ignoreRecursiveError") == "true"
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skipChunkDeletion := r.FormValue("skipChunkDeletion") == "true"
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objectPath := r.URL.Path
if len(r.URL.Path) > 1 && strings.HasSuffix(objectPath, "/") {
objectPath = objectPath[0 : len(objectPath)-1]
}
err := fs.filer.DeleteEntryMetaAndData(context.Background(), util.FullPath(objectPath), isRecursive, ignoreRecursiveError, !skipChunkDeletion, false)
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if err != nil {
glog.V(1).Infoln("deleting", objectPath, ":", err.Error())
httpStatus := http.StatusInternalServerError
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if err == filer_pb.ErrNotFound {
httpStatus = http.StatusNotFound
}
writeJsonError(w, r, httpStatus, err)
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return
}
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w.WriteHeader(http.StatusNoContent)
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}
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func (fs *FilerServer) detectCollection(requestURI, qCollection, qReplication string) (collection, replication string, fsync bool) {
// default
collection = fs.option.Collection
replication = fs.option.DefaultReplication
// get default collection settings
if qCollection != "" {
collection = qCollection
}
if qReplication != "" {
replication = qReplication
}
// required by buckets folder
if strings.HasPrefix(requestURI, fs.filer.DirBucketsPath+"/") {
bucketAndObjectKey := requestURI[len(fs.filer.DirBucketsPath)+1:]
t := strings.Index(bucketAndObjectKey, "/")
if t < 0 {
collection = bucketAndObjectKey
}
if t > 0 {
collection = bucketAndObjectKey[:t]
}
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replication, fsync = fs.filer.ReadBucketOption(collection)
}
return
}