mirror of
https://github.com/restic/restic.git
synced 2024-12-26 09:47:49 +00:00
263 lines
8.2 KiB
Go
263 lines
8.2 KiB
Go
/*
|
|
* Minio Go Library for Amazon S3 Compatible Cloud Storage
|
|
* Copyright 2015-2017 Minio, Inc.
|
|
*
|
|
* Licensed under the Apache License, Version 2.0 (the "License");
|
|
* you may not use this file except in compliance with the License.
|
|
* You may obtain a copy of the License at
|
|
*
|
|
* http://www.apache.org/licenses/LICENSE-2.0
|
|
*
|
|
* Unless required by applicable law or agreed to in writing, software
|
|
* distributed under the License is distributed on an "AS IS" BASIS,
|
|
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
|
|
* See the License for the specific language governing permissions and
|
|
* limitations under the License.
|
|
*/
|
|
|
|
package minio
|
|
|
|
import (
|
|
"bytes"
|
|
"context"
|
|
"fmt"
|
|
"io"
|
|
"net/http"
|
|
"runtime/debug"
|
|
"sort"
|
|
|
|
"github.com/minio/minio-go/pkg/encrypt"
|
|
"github.com/minio/minio-go/pkg/s3utils"
|
|
"golang.org/x/net/lex/httplex"
|
|
)
|
|
|
|
// PutObjectOptions represents options specified by user for PutObject call
|
|
type PutObjectOptions struct {
|
|
UserMetadata map[string]string
|
|
Progress io.Reader
|
|
ContentType string
|
|
ContentEncoding string
|
|
ContentDisposition string
|
|
ContentLanguage string
|
|
CacheControl string
|
|
ServerSideEncryption encrypt.ServerSide
|
|
NumThreads uint
|
|
StorageClass string
|
|
}
|
|
|
|
// getNumThreads - gets the number of threads to be used in the multipart
|
|
// put object operation
|
|
func (opts PutObjectOptions) getNumThreads() (numThreads int) {
|
|
if opts.NumThreads > 0 {
|
|
numThreads = int(opts.NumThreads)
|
|
} else {
|
|
numThreads = totalWorkers
|
|
}
|
|
return
|
|
}
|
|
|
|
// Header - constructs the headers from metadata entered by user in
|
|
// PutObjectOptions struct
|
|
func (opts PutObjectOptions) Header() (header http.Header) {
|
|
header = make(http.Header)
|
|
|
|
if opts.ContentType != "" {
|
|
header["Content-Type"] = []string{opts.ContentType}
|
|
} else {
|
|
header["Content-Type"] = []string{"application/octet-stream"}
|
|
}
|
|
if opts.ContentEncoding != "" {
|
|
header["Content-Encoding"] = []string{opts.ContentEncoding}
|
|
}
|
|
if opts.ContentDisposition != "" {
|
|
header["Content-Disposition"] = []string{opts.ContentDisposition}
|
|
}
|
|
if opts.ContentLanguage != "" {
|
|
header["Content-Language"] = []string{opts.ContentLanguage}
|
|
}
|
|
if opts.CacheControl != "" {
|
|
header["Cache-Control"] = []string{opts.CacheControl}
|
|
}
|
|
if opts.ServerSideEncryption != nil {
|
|
opts.ServerSideEncryption.Marshal(header)
|
|
}
|
|
if opts.StorageClass != "" {
|
|
header[amzStorageClass] = []string{opts.StorageClass}
|
|
}
|
|
for k, v := range opts.UserMetadata {
|
|
if !isAmzHeader(k) && !isStandardHeader(k) && !isStorageClassHeader(k) {
|
|
header["X-Amz-Meta-"+k] = []string{v}
|
|
} else {
|
|
header[k] = []string{v}
|
|
}
|
|
}
|
|
return
|
|
}
|
|
|
|
// validate() checks if the UserMetadata map has standard headers or and raises an error if so.
|
|
func (opts PutObjectOptions) validate() (err error) {
|
|
for k, v := range opts.UserMetadata {
|
|
if !httplex.ValidHeaderFieldName(k) || isStandardHeader(k) || isSSEHeader(k) || isStorageClassHeader(k) {
|
|
return ErrInvalidArgument(k + " unsupported user defined metadata name")
|
|
}
|
|
if !httplex.ValidHeaderFieldValue(v) {
|
|
return ErrInvalidArgument(v + " unsupported user defined metadata value")
|
|
}
|
|
}
|
|
return nil
|
|
}
|
|
|
|
// completedParts is a collection of parts sortable by their part numbers.
|
|
// used for sorting the uploaded parts before completing the multipart request.
|
|
type completedParts []CompletePart
|
|
|
|
func (a completedParts) Len() int { return len(a) }
|
|
func (a completedParts) Swap(i, j int) { a[i], a[j] = a[j], a[i] }
|
|
func (a completedParts) Less(i, j int) bool { return a[i].PartNumber < a[j].PartNumber }
|
|
|
|
// PutObject creates an object in a bucket.
|
|
//
|
|
// You must have WRITE permissions on a bucket to create an object.
|
|
//
|
|
// - For size smaller than 64MiB PutObject automatically does a
|
|
// single atomic Put operation.
|
|
// - For size larger than 64MiB PutObject automatically does a
|
|
// multipart Put operation.
|
|
// - For size input as -1 PutObject does a multipart Put operation
|
|
// until input stream reaches EOF. Maximum object size that can
|
|
// be uploaded through this operation will be 5TiB.
|
|
func (c Client) PutObject(bucketName, objectName string, reader io.Reader, objectSize int64,
|
|
opts PutObjectOptions) (n int64, err error) {
|
|
return c.PutObjectWithContext(context.Background(), bucketName, objectName, reader, objectSize, opts)
|
|
}
|
|
|
|
func (c Client) putObjectCommon(ctx context.Context, bucketName, objectName string, reader io.Reader, size int64, opts PutObjectOptions) (n int64, err error) {
|
|
// Check for largest object size allowed.
|
|
if size > int64(maxMultipartPutObjectSize) {
|
|
return 0, ErrEntityTooLarge(size, maxMultipartPutObjectSize, bucketName, objectName)
|
|
}
|
|
|
|
// NOTE: Streaming signature is not supported by GCS.
|
|
if s3utils.IsGoogleEndpoint(*c.endpointURL) {
|
|
// Do not compute MD5 for Google Cloud Storage.
|
|
return c.putObjectNoChecksum(ctx, bucketName, objectName, reader, size, opts)
|
|
}
|
|
|
|
if c.overrideSignerType.IsV2() {
|
|
if size >= 0 && size < minPartSize {
|
|
return c.putObjectNoChecksum(ctx, bucketName, objectName, reader, size, opts)
|
|
}
|
|
return c.putObjectMultipart(ctx, bucketName, objectName, reader, size, opts)
|
|
}
|
|
if size < 0 {
|
|
return c.putObjectMultipartStreamNoLength(ctx, bucketName, objectName, reader, opts)
|
|
}
|
|
|
|
if size < minPartSize {
|
|
return c.putObjectNoChecksum(ctx, bucketName, objectName, reader, size, opts)
|
|
}
|
|
// For all sizes greater than 64MiB do multipart.
|
|
return c.putObjectMultipartStream(ctx, bucketName, objectName, reader, size, opts)
|
|
}
|
|
|
|
func (c Client) putObjectMultipartStreamNoLength(ctx context.Context, bucketName, objectName string, reader io.Reader, opts PutObjectOptions) (n int64, err error) {
|
|
// Input validation.
|
|
if err = s3utils.CheckValidBucketName(bucketName); err != nil {
|
|
return 0, err
|
|
}
|
|
if err = s3utils.CheckValidObjectName(objectName); err != nil {
|
|
return 0, err
|
|
}
|
|
|
|
// Total data read and written to server. should be equal to
|
|
// 'size' at the end of the call.
|
|
var totalUploadedSize int64
|
|
|
|
// Complete multipart upload.
|
|
var complMultipartUpload completeMultipartUpload
|
|
|
|
// Calculate the optimal parts info for a given size.
|
|
totalPartsCount, partSize, _, err := optimalPartInfo(-1)
|
|
if err != nil {
|
|
return 0, err
|
|
}
|
|
// Initiate a new multipart upload.
|
|
uploadID, err := c.newUploadID(ctx, bucketName, objectName, opts)
|
|
if err != nil {
|
|
return 0, err
|
|
}
|
|
|
|
defer func() {
|
|
if err != nil {
|
|
c.abortMultipartUpload(ctx, bucketName, objectName, uploadID)
|
|
}
|
|
}()
|
|
|
|
// Part number always starts with '1'.
|
|
partNumber := 1
|
|
|
|
// Initialize parts uploaded map.
|
|
partsInfo := make(map[int]ObjectPart)
|
|
|
|
// Create a buffer.
|
|
buf := make([]byte, partSize)
|
|
defer debug.FreeOSMemory()
|
|
|
|
for partNumber <= totalPartsCount {
|
|
length, rErr := io.ReadFull(reader, buf)
|
|
if rErr == io.EOF && partNumber > 1 {
|
|
break
|
|
}
|
|
if rErr != nil && rErr != io.ErrUnexpectedEOF {
|
|
return 0, rErr
|
|
}
|
|
// Update progress reader appropriately to the latest offset
|
|
// as we read from the source.
|
|
rd := newHook(bytes.NewReader(buf[:length]), opts.Progress)
|
|
|
|
// Proceed to upload the part.
|
|
var objPart ObjectPart
|
|
objPart, err = c.uploadPart(ctx, bucketName, objectName, uploadID, rd, partNumber,
|
|
"", "", int64(length), opts.ServerSideEncryption)
|
|
if err != nil {
|
|
return totalUploadedSize, err
|
|
}
|
|
|
|
// Save successfully uploaded part metadata.
|
|
partsInfo[partNumber] = objPart
|
|
|
|
// Save successfully uploaded size.
|
|
totalUploadedSize += int64(length)
|
|
|
|
// Increment part number.
|
|
partNumber++
|
|
|
|
// For unknown size, Read EOF we break away.
|
|
// We do not have to upload till totalPartsCount.
|
|
if rErr == io.EOF {
|
|
break
|
|
}
|
|
}
|
|
|
|
// Loop over total uploaded parts to save them in
|
|
// Parts array before completing the multipart request.
|
|
for i := 1; i < partNumber; i++ {
|
|
part, ok := partsInfo[i]
|
|
if !ok {
|
|
return 0, ErrInvalidArgument(fmt.Sprintf("Missing part number %d", i))
|
|
}
|
|
complMultipartUpload.Parts = append(complMultipartUpload.Parts, CompletePart{
|
|
ETag: part.ETag,
|
|
PartNumber: part.PartNumber,
|
|
})
|
|
}
|
|
|
|
// Sort all completed parts.
|
|
sort.Sort(completedParts(complMultipartUpload.Parts))
|
|
if _, err = c.completeMultipartUpload(ctx, bucketName, objectName, uploadID, complMultipartUpload); err != nil {
|
|
return totalUploadedSize, err
|
|
}
|
|
|
|
// Return final size.
|
|
return totalUploadedSize, nil
|
|
}
|