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package weed_server
import (
"encoding/json"
"errors"
"io/ioutil"
"net/http"
"net/url"
"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/util"
)
type FilerPostResult struct {
Name string `json:"name,omitempty"`
Size uint32 `json:"size,omitempty"`
Error string `json:"error,omitempty"`
Fid string `json:"fid,omitempty"`
Url string `json:"url,omitempty"`
}
func (fs *FilerServer) queryFileInfoByPath(w http.ResponseWriter, r *http.Request, path string) (fileId, urlLocation string, err error) {
var entry *filer2.Entry
if entry, err = fs.filer.FindEntry(filer2.FullPath(path)); err != nil {
glog.V(0).Infoln("failing to find path in filer store", path, err.Error())
writeJsonError(w, r, http.StatusInternalServerError, err)
} else {
if len(entry.Chunks) == 0 {
glog.V(1).Infof("empty entry: %s", path)
w.WriteHeader(http.StatusNoContent)
}else{
fileId = entry.Chunks[0].FileId
urlLocation, err = operation.LookupFileId(fs.filer.GetMaster(), fileId)
if err != nil {
glog.V(1).Infof("operation LookupFileId %s failed, err is %s", fileId, err.Error())
w.WriteHeader(http.StatusNotFound)
}
}
}
return
}
func (fs *FilerServer) assignNewFileInfo(w http.ResponseWriter, r *http.Request, replication, collection string, dataCenter string) (fileId, urlLocation string, err error) {
ar := &operation.VolumeAssignRequest{
Count: 1,
Replication: replication,
Collection: collection,
Ttl: r.URL.Query().Get("ttl"),
DataCenter: dataCenter,
}
var altRequest *operation.VolumeAssignRequest
if dataCenter != "" {
altRequest = &operation.VolumeAssignRequest{
Count: 1,
Replication: replication,
Collection: collection,
Ttl: r.URL.Query().Get("ttl"),
DataCenter: "",
}
}
assignResult, ae := operation.Assign(fs.filer.GetMaster(), ar, altRequest)
if ae != nil {
glog.V(0).Infoln("failing to assign a file id", ae.Error())
writeJsonError(w, r, http.StatusInternalServerError, ae)
err = ae
return
}
fileId = assignResult.Fid
urlLocation = "http://" + assignResult.Url + "/" + assignResult.Fid
return
}
func (fs *FilerServer) PostHandler(w http.ResponseWriter, r *http.Request) {
query := r.URL.Query()
replication := query.Get("replication")
if replication == "" {
replication = fs.option.DefaultReplication
}
collection := query.Get("collection")
if collection == "" {
collection = fs.option.Collection
}
dataCenter := query.Get("dataCenter")
if dataCenter == "" {
dataCenter = fs.option.DataCenter
}
if autoChunked := fs.autoChunk(w, r, replication, collection, dataCenter); autoChunked {
return
}
var fileId, urlLocation string
var err error
if strings.HasPrefix(r.Header.Get("Content-Type"), "multipart/form-data; boundary=") {
fileId, urlLocation, err = fs.multipartUploadAnalyzer(w, r, replication, collection, dataCenter)
if err != nil {
return
}
} else {
fileId, urlLocation, err = fs.monolithicUploadAnalyzer(w, r, replication, collection, dataCenter)
if err != nil || fileId == "" {
return
}
}
u, _ := url.Parse(urlLocation)
// This allows a client to generate a chunk manifest and submit it to the filer -- it is a little off
// because they need to provide FIDs instead of file paths...
cm, _ := strconv.ParseBool(query.Get("cm"))
if cm {
q := u.Query()
q.Set("cm", "true")
u.RawQuery = q.Encode()
}
glog.V(4).Infoln("post to", u)
request := &http.Request{
Method: r.Method,
URL: u,
Proto: r.Proto,
ProtoMajor: r.ProtoMajor,
ProtoMinor: r.ProtoMinor,
Header: r.Header,
Body: r.Body,
Host: r.Host,
ContentLength: r.ContentLength,
}
resp, do_err := util.Do(request)
if do_err != nil {
glog.V(0).Infoln("failing to connect to volume server", r.RequestURI, do_err.Error())
writeJsonError(w, r, http.StatusInternalServerError, do_err)
return
}
defer resp.Body.Close()
resp_body, ra_err := ioutil.ReadAll(resp.Body)
if ra_err != nil {
glog.V(0).Infoln("failing to upload to volume server", r.RequestURI, ra_err.Error())
writeJsonError(w, r, http.StatusInternalServerError, ra_err)
return
}
glog.V(4).Infoln("post result", string(resp_body))
var ret operation.UploadResult
unmarshal_err := json.Unmarshal(resp_body, &ret)
if unmarshal_err != nil {
glog.V(0).Infoln("failing to read upload resonse", r.RequestURI, string(resp_body))
writeJsonError(w, r, http.StatusInternalServerError, unmarshal_err)
return
}
if ret.Error != "" {
glog.V(0).Infoln("failing to post to volume server", r.RequestURI, ret.Error)
writeJsonError(w, r, http.StatusInternalServerError, errors.New(ret.Error))
return
}
path := r.URL.Path
if strings.HasSuffix(path, "/") {
if ret.Name != "" {
path += ret.Name
} else {
operation.DeleteFile(fs.filer.GetMaster(), fileId, fs.jwt(fileId)) //clean up
glog.V(0).Infoln("Can not to write to folder", path, "without a file name!")
writeJsonError(w, r, http.StatusInternalServerError,
errors.New("Can not to write to folder "+path+" without a file name"))
return
}
}
// also delete the old fid unless PUT operation
if r.Method != "PUT" {
if entry, err := fs.filer.FindEntry(filer2.FullPath(path)); err == nil {
oldFid := entry.Chunks[0].FileId
operation.DeleteFile(fs.filer.GetMaster(), oldFid, fs.jwt(oldFid))
} else if err != nil && err != filer2.ErrNotFound {
glog.V(0).Infof("error %v occur when finding %s in filer store", err, path)
}
}
glog.V(4).Infoln("saving", path, "=>", fileId)
entry := &filer2.Entry{
FullPath: filer2.FullPath(path),
Attr: filer2.Attr{
Mtime: time.Now(),
Crtime: time.Now(),
Mode: 0660,
Replication: replication,
Collection: collection,
TtlSec: int32(util.ParseInt(r.URL.Query().Get("ttl"), 0)),
},
Chunks: []*filer_pb.FileChunk{{
FileId: fileId,
Size: uint64(r.ContentLength),
Mtime: time.Now().UnixNano(),
}},
}
if db_err := fs.filer.CreateEntry(entry); db_err != nil {
operation.DeleteFile(fs.filer.GetMaster(), fileId, fs.jwt(fileId)) //clean up
glog.V(0).Infof("failing to write %s to filer server : %v", path, db_err)
writeJsonError(w, r, http.StatusInternalServerError, db_err)
return
}
reply := FilerPostResult{
Name: ret.Name,
Size: ret.Size,
Error: ret.Error,
Fid: fileId,
Url: urlLocation,
}
writeJsonQuiet(w, r, http.StatusCreated, reply)
}
// curl -X DELETE http://localhost:8888/path/to
func (fs *FilerServer) DeleteHandler(w http.ResponseWriter, r *http.Request) {
err := fs.filer.DeleteEntryMetaAndData(filer2.FullPath(r.URL.Path), false, true)
if err != nil {
glog.V(4).Infoln("deleting", r.URL.Path, ":", err.Error())
writeJsonError(w, r, http.StatusInternalServerError, err)
return
}
writeJsonQuiet(w, r, http.StatusAccepted, map[string]string{"error": ""})
}
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