mirror of
https://github.com/chrislusf/seaweedfs
synced 2024-09-02 15:10:33 +02:00
185 lines
4.9 KiB
Go
185 lines
4.9 KiB
Go
package s3api
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import (
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"context"
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"fmt"
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"net/http"
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"net/url"
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"path/filepath"
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"strconv"
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"time"
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"github.com/aws/aws-sdk-go/aws"
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"github.com/aws/aws-sdk-go/service/s3"
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"github.com/chrislusf/seaweedfs/weed/filer2"
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"github.com/chrislusf/seaweedfs/weed/glog"
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"github.com/chrislusf/seaweedfs/weed/pb/filer_pb"
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"github.com/gorilla/mux"
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)
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const (
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maxObjectListSizeLimit = 1000 // Limit number of objects in a listObjectsResponse.
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)
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func (s3a *S3ApiServer) ListObjectsV2Handler(w http.ResponseWriter, r *http.Request) {
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// https://docs.aws.amazon.com/AmazonS3/latest/API/v2-RESTBucketGET.html
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// collect parameters
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vars := mux.Vars(r)
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bucket := vars["bucket"]
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glog.V(4).Infof("read v2: %v", vars)
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originalPrefix, marker, startAfter, delimiter, _, maxKeys := getListObjectsV2Args(r.URL.Query())
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if maxKeys < 0 {
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writeErrorResponse(w, ErrInvalidMaxKeys, r.URL)
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return
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}
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if delimiter != "" && delimiter != "/" {
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writeErrorResponse(w, ErrNotImplemented, r.URL)
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return
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}
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if marker == "" {
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marker = startAfter
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}
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response, err := s3a.listFilerEntries(bucket, originalPrefix, maxKeys, marker)
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if err != nil {
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writeErrorResponse(w, ErrInternalError, r.URL)
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return
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}
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writeSuccessResponseXML(w, encodeResponse(response))
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}
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func (s3a *S3ApiServer) ListObjectsV1Handler(w http.ResponseWriter, r *http.Request) {
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// https://docs.aws.amazon.com/AmazonS3/latest/API/RESTBucketGET.html
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// collect parameters
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vars := mux.Vars(r)
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bucket := vars["bucket"]
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originalPrefix, marker, delimiter, maxKeys := getListObjectsV1Args(r.URL.Query())
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if maxKeys < 0 {
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writeErrorResponse(w, ErrInvalidMaxKeys, r.URL)
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return
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}
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if delimiter != "" && delimiter != "/" {
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writeErrorResponse(w, ErrNotImplemented, r.URL)
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return
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}
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response, err := s3a.listFilerEntries(bucket, originalPrefix, maxKeys, marker)
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if err != nil {
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writeErrorResponse(w, ErrInternalError, r.URL)
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return
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}
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writeSuccessResponseXML(w, encodeResponse(response))
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}
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func (s3a *S3ApiServer) listFilerEntries(bucket, originalPrefix string, maxKeys int, marker string) (response *s3.ListObjectsOutput, err error) {
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// convert full path prefix into directory name and prefix for entry name
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dir, prefix := filepath.Split(originalPrefix)
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// check filer
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err = s3a.withFilerClient(func(client filer_pb.SeaweedFilerClient) error {
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request := &filer_pb.ListEntriesRequest{
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Directory: fmt.Sprintf("%s/%s/%s", s3a.option.BucketsPath, bucket, dir),
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Prefix: prefix,
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Limit: uint32(maxKeys + 1),
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StartFromFileName: marker,
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InclusiveStartFrom: false,
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}
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resp, err := client.ListEntries(context.Background(), request)
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if err != nil {
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return fmt.Errorf("list buckets: %v", err)
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}
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var contents []*s3.Object
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var commonPrefixes []*s3.CommonPrefix
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var counter int
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var lastEntryName string
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var isTruncated bool
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for _, entry := range resp.Entries {
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counter++
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if counter > maxKeys {
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isTruncated = true
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break
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}
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lastEntryName = entry.Name
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if entry.IsDirectory {
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commonPrefixes = append(commonPrefixes, &s3.CommonPrefix{
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Prefix: aws.String(fmt.Sprintf("%s%s/", dir, entry.Name)),
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})
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} else {
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contents = append(contents, &s3.Object{
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Key: aws.String(fmt.Sprintf("%s%s", dir, entry.Name)),
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LastModified: aws.Time(time.Unix(entry.Attributes.Mtime, 0)),
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ETag: aws.String("\"" + filer2.ETag(entry.Chunks) + "\""),
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Size: aws.Int64(int64(filer2.TotalSize(entry.Chunks))),
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Owner: &s3.Owner{
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ID: aws.String("bcaf161ca5fb16fd081034f"),
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DisplayName: aws.String("webfile"),
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},
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StorageClass: aws.String("STANDARD"),
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})
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}
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}
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response = &s3.ListObjectsOutput{
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Name: aws.String(bucket),
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Prefix: aws.String(originalPrefix),
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Marker: aws.String(marker),
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NextMarker: aws.String(lastEntryName),
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MaxKeys: aws.Int64(int64(maxKeys)),
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Delimiter: aws.String("/"),
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IsTruncated: aws.Bool(isTruncated),
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Contents: contents,
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CommonPrefixes: commonPrefixes,
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}
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glog.V(4).Infof("read directory: %v, found: %v", request, counter)
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return nil
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})
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return
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}
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func getListObjectsV2Args(values url.Values) (prefix, token, startAfter, delimiter string, fetchOwner bool, maxkeys int) {
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prefix = values.Get("prefix")
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token = values.Get("continuation-token")
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startAfter = values.Get("start-after")
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delimiter = values.Get("delimiter")
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if values.Get("max-keys") != "" {
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maxkeys, _ = strconv.Atoi(values.Get("max-keys"))
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} else {
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maxkeys = maxObjectListSizeLimit
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}
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fetchOwner = values.Get("fetch-owner") == "true"
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return
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}
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func getListObjectsV1Args(values url.Values) (prefix, marker, delimiter string, maxkeys int) {
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prefix = values.Get("prefix")
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marker = values.Get("marker")
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delimiter = values.Get("delimiter")
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if values.Get("max-keys") != "" {
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maxkeys, _ = strconv.Atoi(values.Get("max-keys"))
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} else {
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maxkeys = maxObjectListSizeLimit
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}
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return
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}
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