mirror of
https://github.com/seaweedfs/seaweedfs.git
synced 2024-12-12 00:19:14 +08:00
9f9ef1340c
streaming mode would create separate grpc connections for each call. this is to ensure the long poll connections are properly closed.
386 lines
11 KiB
Go
386 lines
11 KiB
Go
package s3api
|
|
|
|
import (
|
|
"context"
|
|
"encoding/xml"
|
|
"fmt"
|
|
"github.com/chrislusf/seaweedfs/weed/glog"
|
|
"io"
|
|
"net/http"
|
|
"net/url"
|
|
"path/filepath"
|
|
"strconv"
|
|
"strings"
|
|
"time"
|
|
|
|
"github.com/chrislusf/seaweedfs/weed/filer"
|
|
"github.com/chrislusf/seaweedfs/weed/pb/filer_pb"
|
|
xhttp "github.com/chrislusf/seaweedfs/weed/s3api/http"
|
|
"github.com/chrislusf/seaweedfs/weed/s3api/s3err"
|
|
)
|
|
|
|
type ListBucketResultV2 struct {
|
|
XMLName xml.Name `xml:"http://s3.amazonaws.com/doc/2006-03-01/ ListBucketResult"`
|
|
Name string `xml:"Name"`
|
|
Prefix string `xml:"Prefix"`
|
|
MaxKeys int `xml:"MaxKeys"`
|
|
Delimiter string `xml:"Delimiter,omitempty"`
|
|
IsTruncated bool `xml:"IsTruncated"`
|
|
Contents []ListEntry `xml:"Contents,omitempty"`
|
|
CommonPrefixes []PrefixEntry `xml:"CommonPrefixes,omitempty"`
|
|
ContinuationToken string `xml:"ContinuationToken,omitempty"`
|
|
NextContinuationToken string `xml:"NextContinuationToken,omitempty"`
|
|
KeyCount int `xml:"KeyCount"`
|
|
StartAfter string `xml:"StartAfter,omitempty"`
|
|
}
|
|
|
|
func (s3a *S3ApiServer) ListObjectsV2Handler(w http.ResponseWriter, r *http.Request) {
|
|
|
|
// https://docs.aws.amazon.com/AmazonS3/latest/API/v2-RESTBucketGET.html
|
|
|
|
// collect parameters
|
|
bucket, _ := xhttp.GetBucketAndObject(r)
|
|
glog.V(3).Infof("ListObjectsV2Handler %s", bucket)
|
|
|
|
originalPrefix, continuationToken, startAfter, delimiter, _, maxKeys := getListObjectsV2Args(r.URL.Query())
|
|
|
|
if maxKeys < 0 {
|
|
s3err.WriteErrorResponse(w, r, s3err.ErrInvalidMaxKeys)
|
|
return
|
|
}
|
|
if delimiter != "" && delimiter != "/" {
|
|
s3err.WriteErrorResponse(w, r, s3err.ErrNotImplemented)
|
|
return
|
|
}
|
|
|
|
marker := continuationToken
|
|
if continuationToken == "" {
|
|
marker = startAfter
|
|
}
|
|
|
|
response, err := s3a.listFilerEntries(bucket, originalPrefix, maxKeys, marker, delimiter)
|
|
|
|
if err != nil {
|
|
s3err.WriteErrorResponse(w, r, s3err.ErrInternalError)
|
|
return
|
|
}
|
|
|
|
if len(response.Contents) == 0 {
|
|
if exists, existErr := s3a.exists(s3a.option.BucketsPath, bucket, true); existErr == nil && !exists {
|
|
s3err.WriteErrorResponse(w, r, s3err.ErrNoSuchBucket)
|
|
return
|
|
}
|
|
}
|
|
|
|
responseV2 := &ListBucketResultV2{
|
|
XMLName: response.XMLName,
|
|
Name: response.Name,
|
|
CommonPrefixes: response.CommonPrefixes,
|
|
Contents: response.Contents,
|
|
ContinuationToken: continuationToken,
|
|
Delimiter: response.Delimiter,
|
|
IsTruncated: response.IsTruncated,
|
|
KeyCount: len(response.Contents) + len(response.CommonPrefixes),
|
|
MaxKeys: response.MaxKeys,
|
|
NextContinuationToken: response.NextMarker,
|
|
Prefix: response.Prefix,
|
|
StartAfter: startAfter,
|
|
}
|
|
|
|
writeSuccessResponseXML(w, r, responseV2)
|
|
}
|
|
|
|
func (s3a *S3ApiServer) ListObjectsV1Handler(w http.ResponseWriter, r *http.Request) {
|
|
|
|
// https://docs.aws.amazon.com/AmazonS3/latest/API/RESTBucketGET.html
|
|
|
|
// collect parameters
|
|
bucket, _ := xhttp.GetBucketAndObject(r)
|
|
glog.V(3).Infof("ListObjectsV1Handler %s", bucket)
|
|
|
|
originalPrefix, marker, delimiter, maxKeys := getListObjectsV1Args(r.URL.Query())
|
|
|
|
if maxKeys < 0 {
|
|
s3err.WriteErrorResponse(w, r, s3err.ErrInvalidMaxKeys)
|
|
return
|
|
}
|
|
if delimiter != "" && delimiter != "/" {
|
|
s3err.WriteErrorResponse(w, r, s3err.ErrNotImplemented)
|
|
return
|
|
}
|
|
|
|
response, err := s3a.listFilerEntries(bucket, originalPrefix, maxKeys, marker, delimiter)
|
|
|
|
if err != nil {
|
|
s3err.WriteErrorResponse(w, r, s3err.ErrInternalError)
|
|
return
|
|
}
|
|
|
|
if len(response.Contents) == 0 {
|
|
if exists, existErr := s3a.exists(s3a.option.BucketsPath, bucket, true); existErr == nil && !exists {
|
|
s3err.WriteErrorResponse(w, r, s3err.ErrNoSuchBucket)
|
|
return
|
|
}
|
|
}
|
|
|
|
writeSuccessResponseXML(w, r, response)
|
|
}
|
|
|
|
func (s3a *S3ApiServer) listFilerEntries(bucket string, originalPrefix string, maxKeys int, marker string, delimiter string) (response ListBucketResult, err error) {
|
|
// convert full path prefix into directory name and prefix for entry name
|
|
reqDir, prefix := filepath.Split(originalPrefix)
|
|
if strings.HasPrefix(reqDir, "/") {
|
|
reqDir = reqDir[1:]
|
|
}
|
|
bucketPrefix := fmt.Sprintf("%s/%s/", s3a.option.BucketsPath, bucket)
|
|
reqDir = fmt.Sprintf("%s%s", bucketPrefix, reqDir)
|
|
if strings.HasSuffix(reqDir, "/") {
|
|
// remove trailing "/"
|
|
reqDir = reqDir[:len(reqDir)-1]
|
|
}
|
|
|
|
var contents []ListEntry
|
|
var commonPrefixes []PrefixEntry
|
|
var isTruncated bool
|
|
var doErr error
|
|
var nextMarker string
|
|
|
|
// check filer
|
|
err = s3a.WithFilerClient(false, func(client filer_pb.SeaweedFilerClient) error {
|
|
|
|
_, isTruncated, nextMarker, doErr = s3a.doListFilerEntries(client, reqDir, prefix, maxKeys, marker, delimiter, func(dir string, entry *filer_pb.Entry) {
|
|
if entry.IsDirectory {
|
|
if delimiter == "/" {
|
|
commonPrefixes = append(commonPrefixes, PrefixEntry{
|
|
Prefix: fmt.Sprintf("%s/%s/", dir, entry.Name)[len(bucketPrefix):],
|
|
})
|
|
}
|
|
} else {
|
|
storageClass := "STANDARD"
|
|
if v, ok := entry.Extended[xhttp.AmzStorageClass]; ok {
|
|
storageClass = string(v)
|
|
}
|
|
contents = append(contents, ListEntry{
|
|
Key: fmt.Sprintf("%s/%s", dir, entry.Name)[len(bucketPrefix):],
|
|
LastModified: time.Unix(entry.Attributes.Mtime, 0).UTC(),
|
|
ETag: "\"" + filer.ETag(entry) + "\"",
|
|
Size: int64(filer.FileSize(entry)),
|
|
Owner: CanonicalUser{
|
|
ID: fmt.Sprintf("%x", entry.Attributes.Uid),
|
|
DisplayName: entry.Attributes.UserName,
|
|
},
|
|
StorageClass: StorageClass(storageClass),
|
|
})
|
|
}
|
|
})
|
|
if doErr != nil {
|
|
return doErr
|
|
}
|
|
|
|
if !isTruncated {
|
|
nextMarker = ""
|
|
}
|
|
|
|
response = ListBucketResult{
|
|
Name: bucket,
|
|
Prefix: originalPrefix,
|
|
Marker: marker,
|
|
NextMarker: nextMarker,
|
|
MaxKeys: maxKeys,
|
|
Delimiter: delimiter,
|
|
IsTruncated: isTruncated,
|
|
Contents: contents,
|
|
CommonPrefixes: commonPrefixes,
|
|
}
|
|
|
|
return nil
|
|
})
|
|
|
|
return
|
|
}
|
|
|
|
func (s3a *S3ApiServer) doListFilerEntries(client filer_pb.SeaweedFilerClient, dir, prefix string, maxKeys int, marker, delimiter string, eachEntryFn func(dir string, entry *filer_pb.Entry)) (counter int, isTruncated bool, nextMarker string, err error) {
|
|
// invariants
|
|
// prefix and marker should be under dir, marker may contain "/"
|
|
// maxKeys should be updated for each recursion
|
|
|
|
if prefix == "/" && delimiter == "/" {
|
|
return
|
|
}
|
|
if maxKeys <= 0 {
|
|
return
|
|
}
|
|
|
|
if strings.Contains(marker, "/") {
|
|
sepIndex := strings.Index(marker, "/")
|
|
subDir, subMarker := marker[0:sepIndex], marker[sepIndex+1:]
|
|
// println("doListFilerEntries dir", dir+"/"+subDir, "subMarker", subMarker, "maxKeys", maxKeys)
|
|
subCounter, subIsTruncated, subNextMarker, subErr := s3a.doListFilerEntries(client, dir+"/"+subDir, "", maxKeys, subMarker, delimiter, eachEntryFn)
|
|
if subErr != nil {
|
|
err = subErr
|
|
return
|
|
}
|
|
counter += subCounter
|
|
isTruncated = isTruncated || subIsTruncated
|
|
maxKeys -= subCounter
|
|
nextMarker = subDir + "/" + subNextMarker
|
|
// finished processing this sub directory
|
|
marker = subDir
|
|
}
|
|
if maxKeys <= 0 {
|
|
return
|
|
}
|
|
|
|
// now marker is also a direct child of dir
|
|
request := &filer_pb.ListEntriesRequest{
|
|
Directory: dir,
|
|
Prefix: prefix,
|
|
Limit: uint32(maxKeys + 1),
|
|
StartFromFileName: marker,
|
|
InclusiveStartFrom: false,
|
|
}
|
|
|
|
ctx, cancel := context.WithCancel(context.Background())
|
|
defer cancel()
|
|
stream, listErr := client.ListEntries(ctx, request)
|
|
if listErr != nil {
|
|
err = fmt.Errorf("list entires %+v: %v", request, listErr)
|
|
return
|
|
}
|
|
|
|
for {
|
|
resp, recvErr := stream.Recv()
|
|
if recvErr != nil {
|
|
if recvErr == io.EOF {
|
|
break
|
|
} else {
|
|
err = fmt.Errorf("iterating entires %+v: %v", request, recvErr)
|
|
return
|
|
}
|
|
}
|
|
if counter >= maxKeys {
|
|
isTruncated = true
|
|
return
|
|
}
|
|
entry := resp.Entry
|
|
nextMarker = entry.Name
|
|
if entry.IsDirectory {
|
|
// println("ListEntries", dir, "dir:", entry.Name)
|
|
if entry.Name != ".uploads" { // FIXME no need to apply to all directories. this extra also affects maxKeys
|
|
if delimiter != "/" {
|
|
eachEntryFn(dir, entry)
|
|
// println("doListFilerEntries2 dir", dir+"/"+entry.Name, "maxKeys", maxKeys-counter)
|
|
subCounter, subIsTruncated, subNextMarker, subErr := s3a.doListFilerEntries(client, dir+"/"+entry.Name, "", maxKeys-counter, "", delimiter, eachEntryFn)
|
|
if subErr != nil {
|
|
err = fmt.Errorf("doListFilerEntries2: %v", subErr)
|
|
return
|
|
}
|
|
// println("doListFilerEntries2 dir", dir+"/"+entry.Name, "maxKeys", maxKeys-counter, "subCounter", subCounter, "subNextMarker", subNextMarker, "subIsTruncated", subIsTruncated)
|
|
counter += subCounter
|
|
nextMarker = entry.Name + "/" + subNextMarker
|
|
if subIsTruncated {
|
|
isTruncated = true
|
|
return
|
|
}
|
|
} else {
|
|
var isEmpty bool
|
|
if !s3a.option.AllowEmptyFolder {
|
|
if isEmpty, err = s3a.isDirectoryAllEmpty(client, dir, entry.Name); err != nil {
|
|
glog.Errorf("check empty folder %s: %v", dir, err)
|
|
}
|
|
}
|
|
if !isEmpty {
|
|
eachEntryFn(dir, entry)
|
|
counter++
|
|
}
|
|
}
|
|
}
|
|
} else {
|
|
// println("ListEntries", dir, "file:", entry.Name)
|
|
eachEntryFn(dir, entry)
|
|
counter++
|
|
}
|
|
}
|
|
return
|
|
}
|
|
|
|
func getListObjectsV2Args(values url.Values) (prefix, token, startAfter, delimiter string, fetchOwner bool, maxkeys int) {
|
|
prefix = values.Get("prefix")
|
|
token = values.Get("continuation-token")
|
|
startAfter = values.Get("start-after")
|
|
delimiter = values.Get("delimiter")
|
|
if values.Get("max-keys") != "" {
|
|
maxkeys, _ = strconv.Atoi(values.Get("max-keys"))
|
|
} else {
|
|
maxkeys = maxObjectListSizeLimit
|
|
}
|
|
fetchOwner = values.Get("fetch-owner") == "true"
|
|
return
|
|
}
|
|
|
|
func getListObjectsV1Args(values url.Values) (prefix, marker, delimiter string, maxkeys int) {
|
|
prefix = values.Get("prefix")
|
|
marker = values.Get("marker")
|
|
delimiter = values.Get("delimiter")
|
|
if values.Get("max-keys") != "" {
|
|
maxkeys, _ = strconv.Atoi(values.Get("max-keys"))
|
|
} else {
|
|
maxkeys = maxObjectListSizeLimit
|
|
}
|
|
return
|
|
}
|
|
|
|
func (s3a *S3ApiServer) isDirectoryAllEmpty(filerClient filer_pb.SeaweedFilerClient, parentDir, name string) (isEmpty bool, err error) {
|
|
// println("+ isDirectoryAllEmpty", dir, name)
|
|
glog.V(4).Infof("+ isEmpty %s/%s", parentDir, name)
|
|
defer glog.V(4).Infof("- isEmpty %s/%s %v", parentDir, name, isEmpty)
|
|
var fileCounter int
|
|
var subDirs []string
|
|
currentDir := parentDir + "/" + name
|
|
var startFrom string
|
|
var isExhausted bool
|
|
var foundEntry bool
|
|
for fileCounter == 0 && !isExhausted && err == nil {
|
|
err = filer_pb.SeaweedList(filerClient, currentDir, "", func(entry *filer_pb.Entry, isLast bool) error {
|
|
foundEntry = true
|
|
if entry.IsDirectory {
|
|
subDirs = append(subDirs, entry.Name)
|
|
} else {
|
|
fileCounter++
|
|
}
|
|
startFrom = entry.Name
|
|
isExhausted = isExhausted || isLast
|
|
glog.V(4).Infof(" * %s/%s isLast: %t", currentDir, startFrom, isLast)
|
|
return nil
|
|
}, startFrom, false, 8)
|
|
if !foundEntry {
|
|
break
|
|
}
|
|
}
|
|
|
|
if err != nil {
|
|
return false, err
|
|
}
|
|
|
|
if fileCounter > 0 {
|
|
return false, nil
|
|
}
|
|
|
|
for _, subDir := range subDirs {
|
|
isSubEmpty, subErr := s3a.isDirectoryAllEmpty(filerClient, currentDir, subDir)
|
|
if subErr != nil {
|
|
return false, subErr
|
|
}
|
|
if !isSubEmpty {
|
|
return false, nil
|
|
}
|
|
}
|
|
|
|
glog.V(1).Infof("deleting empty folder %s", currentDir)
|
|
if err = doDeleteEntry(filerClient, parentDir, name, true, true); err != nil {
|
|
return
|
|
}
|
|
|
|
return true, nil
|
|
}
|