seaweedfs/weed/s3api/s3api_object_copy_handlers.go

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package s3api
import (
"fmt"
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"github.com/chrislusf/seaweedfs/weed/glog"
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"github.com/chrislusf/seaweedfs/weed/s3api/s3err"
weed_server "github.com/chrislusf/seaweedfs/weed/server"
"net/http"
"net/url"
"strconv"
"strings"
"time"
"github.com/chrislusf/seaweedfs/weed/util"
)
func (s3a *S3ApiServer) CopyObjectHandler(w http.ResponseWriter, r *http.Request) {
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dstBucket, dstObject := getBucketAndObject(r)
// Copy source path.
cpSrcPath, err := url.QueryUnescape(r.Header.Get("X-Amz-Copy-Source"))
if err != nil {
// Save unescaped string as is.
cpSrcPath = r.Header.Get("X-Amz-Copy-Source")
}
srcBucket, srcObject := pathToBucketAndObject(cpSrcPath)
if (srcBucket == dstBucket && srcObject == dstObject || cpSrcPath == "") && isReplace(r) {
fullPath := util.FullPath(fmt.Sprintf("%s/%s%s", s3a.option.BucketsPath, dstBucket, dstObject))
dir, name := fullPath.DirAndName()
entry, err := s3a.getEntry(dir, name)
if err != nil {
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s3err.WriteErrorResponse(w, s3err.ErrInvalidCopySource, r)
}
entry.Extended = weed_server.SaveAmzMetaData(r, entry.Extended, isReplace(r))
err = s3a.touch(dir, name, entry)
if err != nil {
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s3err.WriteErrorResponse(w, s3err.ErrInvalidCopySource, r)
}
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writeSuccessResponseXML(w, CopyObjectResult{
ETag: fmt.Sprintf("%x", entry.Attributes.Md5),
LastModified: time.Now().UTC(),
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})
return
}
// If source object is empty or bucket is empty, reply back invalid copy source.
if srcObject == "" || srcBucket == "" {
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s3err.WriteErrorResponse(w, s3err.ErrInvalidCopySource, r)
return
}
if srcBucket == dstBucket && srcObject == dstObject {
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s3err.WriteErrorResponse(w, s3err.ErrInvalidCopyDest, r)
return
}
dstUrl := fmt.Sprintf("http://%s%s/%s%s?collection=%s",
s3a.option.Filer, s3a.option.BucketsPath, dstBucket, dstObject, dstBucket)
srcUrl := fmt.Sprintf("http://%s%s/%s%s",
s3a.option.Filer, s3a.option.BucketsPath, srcBucket, srcObject)
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_, _, resp, err := util.DownloadFile(srcUrl)
if err != nil {
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s3err.WriteErrorResponse(w, s3err.ErrInvalidCopySource, r)
return
}
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defer util.CloseResponse(resp)
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glog.V(2).Infof("copy from %s to %s", srcUrl, dstUrl)
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etag, errCode := s3a.putToFiler(r, dstUrl, resp.Body)
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if errCode != s3err.ErrNone {
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s3err.WriteErrorResponse(w, errCode, r)
return
}
setEtag(w, etag)
response := CopyObjectResult{
ETag: etag,
LastModified: time.Now().UTC(),
}
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writeSuccessResponseXML(w, response)
}
func pathToBucketAndObject(path string) (bucket, object string) {
path = strings.TrimPrefix(path, "/")
parts := strings.SplitN(path, "/", 2)
if len(parts) == 2 {
return parts[0], "/" + parts[1]
}
return parts[0], "/"
}
type CopyPartResult struct {
LastModified time.Time `xml:"LastModified"`
ETag string `xml:"ETag"`
}
func (s3a *S3ApiServer) CopyObjectPartHandler(w http.ResponseWriter, r *http.Request) {
// https://docs.aws.amazon.com/AmazonS3/latest/dev/CopyingObjctsUsingRESTMPUapi.html
// https://docs.aws.amazon.com/AmazonS3/latest/API/API_UploadPartCopy.html
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dstBucket, _ := getBucketAndObject(r)
// Copy source path.
cpSrcPath, err := url.QueryUnescape(r.Header.Get("X-Amz-Copy-Source"))
if err != nil {
// Save unescaped string as is.
cpSrcPath = r.Header.Get("X-Amz-Copy-Source")
}
srcBucket, srcObject := pathToBucketAndObject(cpSrcPath)
// If source object is empty or bucket is empty, reply back invalid copy source.
if srcObject == "" || srcBucket == "" {
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s3err.WriteErrorResponse(w, s3err.ErrInvalidCopySource, r)
return
}
uploadID := r.URL.Query().Get("uploadId")
partIDString := r.URL.Query().Get("partNumber")
partID, err := strconv.Atoi(partIDString)
if err != nil {
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s3err.WriteErrorResponse(w, s3err.ErrInvalidPart, r)
return
}
// check partID with maximum part ID for multipart objects
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if partID > globalMaxPartID {
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s3err.WriteErrorResponse(w, s3err.ErrInvalidMaxParts, r)
return
}
rangeHeader := r.Header.Get("x-amz-copy-source-range")
dstUrl := fmt.Sprintf("http://%s%s/%s/%04d.part?collection=%s",
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s3a.option.Filer, s3a.genUploadsFolder(dstBucket), uploadID, partID, dstBucket)
srcUrl := fmt.Sprintf("http://%s%s/%s%s",
s3a.option.Filer, s3a.option.BucketsPath, srcBucket, srcObject)
dataReader, err := util.ReadUrlAsReaderCloser(srcUrl, rangeHeader)
if err != nil {
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s3err.WriteErrorResponse(w, s3err.ErrInvalidCopySource, r)
return
}
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defer dataReader.Close()
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glog.V(2).Infof("copy from %s to %s", srcUrl, dstUrl)
etag, errCode := s3a.putToFiler(r, dstUrl, dataReader)
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if errCode != s3err.ErrNone {
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s3err.WriteErrorResponse(w, errCode, r)
return
}
setEtag(w, etag)
response := CopyPartResult{
ETag: etag,
LastModified: time.Now().UTC(),
}
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writeSuccessResponseXML(w, response)
}
func isReplace(r *http.Request) bool {
return r.Header.Get("X-Amz-Metadata-Directive") == "REPLACE"
}