504 lines
16 KiB
Go
504 lines
16 KiB
Go
/*
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* MinIO Go Library for Amazon S3 Compatible Cloud Storage
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* Copyright 2017 MinIO, Inc.
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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package minio
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import (
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"bytes"
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"context"
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"encoding/base64"
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"fmt"
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"io"
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"net/http"
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"net/url"
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"sort"
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"strings"
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"github.com/google/uuid"
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"github.com/minio/minio-go/v7/pkg/s3utils"
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)
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// putObjectMultipartStream - upload a large object using
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// multipart upload and streaming signature for signing payload.
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// Comprehensive put object operation involving multipart uploads.
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//
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// Following code handles these types of readers.
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//
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// - *minio.Object
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// - Any reader which has a method 'ReadAt()'
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//
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func (c *Client) putObjectMultipartStream(ctx context.Context, bucketName, objectName string,
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reader io.Reader, size int64, opts PutObjectOptions,
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) (info UploadInfo, err error) {
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if !isObject(reader) && isReadAt(reader) && !opts.SendContentMd5 {
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// Verify if the reader implements ReadAt and it is not a *minio.Object then we will use parallel uploader.
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info, err = c.putObjectMultipartStreamFromReadAt(ctx, bucketName, objectName, reader.(io.ReaderAt), size, opts)
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} else {
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info, err = c.putObjectMultipartStreamOptionalChecksum(ctx, bucketName, objectName, reader, size, opts)
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}
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if err != nil {
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errResp := ToErrorResponse(err)
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// Verify if multipart functionality is not available, if not
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// fall back to single PutObject operation.
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if errResp.Code == "AccessDenied" && strings.Contains(errResp.Message, "Access Denied") {
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// Verify if size of reader is greater than '5GiB'.
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if size > maxSinglePutObjectSize {
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return UploadInfo{}, errEntityTooLarge(size, maxSinglePutObjectSize, bucketName, objectName)
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}
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// Fall back to uploading as single PutObject operation.
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return c.putObject(ctx, bucketName, objectName, reader, size, opts)
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}
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}
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return info, err
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}
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// uploadedPartRes - the response received from a part upload.
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type uploadedPartRes struct {
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Error error // Any error encountered while uploading the part.
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PartNum int // Number of the part uploaded.
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Size int64 // Size of the part uploaded.
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Part ObjectPart
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}
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type uploadPartReq struct {
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PartNum int // Number of the part uploaded.
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Part ObjectPart // Size of the part uploaded.
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}
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// putObjectMultipartFromReadAt - Uploads files bigger than 128MiB.
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// Supports all readers which implements io.ReaderAt interface
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// (ReadAt method).
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//
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// NOTE: This function is meant to be used for all readers which
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// implement io.ReaderAt which allows us for resuming multipart
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// uploads but reading at an offset, which would avoid re-read the
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// data which was already uploaded. Internally this function uses
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// temporary files for staging all the data, these temporary files are
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// cleaned automatically when the caller i.e http client closes the
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// stream after uploading all the contents successfully.
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func (c *Client) putObjectMultipartStreamFromReadAt(ctx context.Context, bucketName, objectName string,
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reader io.ReaderAt, size int64, opts PutObjectOptions,
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) (info UploadInfo, err error) {
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// Input validation.
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if err = s3utils.CheckValidBucketName(bucketName); err != nil {
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return UploadInfo{}, err
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}
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if err = s3utils.CheckValidObjectName(objectName); err != nil {
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return UploadInfo{}, err
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}
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// Calculate the optimal parts info for a given size.
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totalPartsCount, partSize, lastPartSize, err := OptimalPartInfo(size, opts.PartSize)
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if err != nil {
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return UploadInfo{}, err
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}
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// Initiate a new multipart upload.
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uploadID, err := c.newUploadID(ctx, bucketName, objectName, opts)
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if err != nil {
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return UploadInfo{}, err
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}
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// Aborts the multipart upload in progress, if the
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// function returns any error, since we do not resume
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// we should purge the parts which have been uploaded
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// to relinquish storage space.
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defer func() {
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if err != nil {
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c.abortMultipartUpload(ctx, bucketName, objectName, uploadID)
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}
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}()
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// Total data read and written to server. should be equal to 'size' at the end of the call.
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var totalUploadedSize int64
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// Complete multipart upload.
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var complMultipartUpload completeMultipartUpload
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// Declare a channel that sends the next part number to be uploaded.
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uploadPartsCh := make(chan uploadPartReq)
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// Declare a channel that sends back the response of a part upload.
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uploadedPartsCh := make(chan uploadedPartRes)
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// Used for readability, lastPartNumber is always totalPartsCount.
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lastPartNumber := totalPartsCount
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partitionCtx, partitionCancel := context.WithCancel(ctx)
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defer partitionCancel()
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// Send each part number to the channel to be processed.
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go func() {
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defer close(uploadPartsCh)
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for p := 1; p <= totalPartsCount; p++ {
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select {
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case <-partitionCtx.Done():
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return
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case uploadPartsCh <- uploadPartReq{PartNum: p}:
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}
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}
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}()
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// Receive each part number from the channel allowing three parallel uploads.
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for w := 1; w <= opts.getNumThreads(); w++ {
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go func(partSize int64) {
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for {
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var uploadReq uploadPartReq
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var ok bool
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select {
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case <-ctx.Done():
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return
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case uploadReq, ok = <-uploadPartsCh:
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if !ok {
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return
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}
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// Each worker will draw from the part channel and upload in parallel.
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}
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// If partNumber was not uploaded we calculate the missing
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// part offset and size. For all other part numbers we
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// calculate offset based on multiples of partSize.
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readOffset := int64(uploadReq.PartNum-1) * partSize
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// As a special case if partNumber is lastPartNumber, we
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// calculate the offset based on the last part size.
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if uploadReq.PartNum == lastPartNumber {
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readOffset = (size - lastPartSize)
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partSize = lastPartSize
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}
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sectionReader := newHook(io.NewSectionReader(reader, readOffset, partSize), opts.Progress)
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// Proceed to upload the part.
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objPart, err := c.uploadPart(ctx, bucketName, objectName,
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uploadID, sectionReader, uploadReq.PartNum,
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"", "", partSize,
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opts.ServerSideEncryption,
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!opts.DisableContentSha256,
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)
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if err != nil {
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uploadedPartsCh <- uploadedPartRes{
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Error: err,
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}
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// Exit the goroutine.
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return
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}
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// Save successfully uploaded part metadata.
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uploadReq.Part = objPart
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// Send successful part info through the channel.
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uploadedPartsCh <- uploadedPartRes{
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Size: objPart.Size,
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PartNum: uploadReq.PartNum,
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Part: uploadReq.Part,
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}
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}
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}(partSize)
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}
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// Gather the responses as they occur and update any
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// progress bar.
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for u := 1; u <= totalPartsCount; u++ {
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select {
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case <-ctx.Done():
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return UploadInfo{}, ctx.Err()
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case uploadRes := <-uploadedPartsCh:
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if uploadRes.Error != nil {
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return UploadInfo{}, uploadRes.Error
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}
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// Update the totalUploadedSize.
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totalUploadedSize += uploadRes.Size
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complMultipartUpload.Parts = append(complMultipartUpload.Parts, CompletePart{
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ETag: uploadRes.Part.ETag,
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PartNumber: uploadRes.Part.PartNumber,
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})
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}
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}
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// Verify if we uploaded all the data.
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if totalUploadedSize != size {
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return UploadInfo{}, errUnexpectedEOF(totalUploadedSize, size, bucketName, objectName)
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}
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// Sort all completed parts.
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sort.Sort(completedParts(complMultipartUpload.Parts))
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uploadInfo, err := c.completeMultipartUpload(ctx, bucketName, objectName, uploadID, complMultipartUpload, PutObjectOptions{})
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if err != nil {
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return UploadInfo{}, err
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}
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uploadInfo.Size = totalUploadedSize
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return uploadInfo, nil
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}
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func (c *Client) putObjectMultipartStreamOptionalChecksum(ctx context.Context, bucketName, objectName string,
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reader io.Reader, size int64, opts PutObjectOptions,
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) (info UploadInfo, err error) {
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// Input validation.
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if err = s3utils.CheckValidBucketName(bucketName); err != nil {
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return UploadInfo{}, err
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}
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if err = s3utils.CheckValidObjectName(objectName); err != nil {
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return UploadInfo{}, err
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}
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// Calculate the optimal parts info for a given size.
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totalPartsCount, partSize, lastPartSize, err := OptimalPartInfo(size, opts.PartSize)
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if err != nil {
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return UploadInfo{}, err
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}
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// Initiates a new multipart request
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uploadID, err := c.newUploadID(ctx, bucketName, objectName, opts)
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if err != nil {
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return UploadInfo{}, err
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}
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// Aborts the multipart upload if the function returns
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// any error, since we do not resume we should purge
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// the parts which have been uploaded to relinquish
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// storage space.
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defer func() {
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if err != nil {
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c.abortMultipartUpload(ctx, bucketName, objectName, uploadID)
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}
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}()
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// Total data read and written to server. should be equal to 'size' at the end of the call.
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var totalUploadedSize int64
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// Initialize parts uploaded map.
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partsInfo := make(map[int]ObjectPart)
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// Create a buffer.
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buf := make([]byte, partSize)
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// Avoid declaring variables in the for loop
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var md5Base64 string
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var hookReader io.Reader
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// Part number always starts with '1'.
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var partNumber int
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for partNumber = 1; partNumber <= totalPartsCount; partNumber++ {
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// Proceed to upload the part.
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if partNumber == totalPartsCount {
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partSize = lastPartSize
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}
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if opts.SendContentMd5 {
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length, rerr := readFull(reader, buf)
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if rerr == io.EOF && partNumber > 1 {
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break
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}
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if rerr != nil && rerr != io.ErrUnexpectedEOF && err != io.EOF {
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return UploadInfo{}, rerr
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}
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// Calculate md5sum.
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hash := c.md5Hasher()
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hash.Write(buf[:length])
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md5Base64 = base64.StdEncoding.EncodeToString(hash.Sum(nil))
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hash.Close()
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// Update progress reader appropriately to the latest offset
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// as we read from the source.
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hookReader = newHook(bytes.NewReader(buf[:length]), opts.Progress)
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} else {
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// Update progress reader appropriately to the latest offset
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// as we read from the source.
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hookReader = newHook(reader, opts.Progress)
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}
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objPart, uerr := c.uploadPart(ctx, bucketName, objectName, uploadID,
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io.LimitReader(hookReader, partSize),
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partNumber, md5Base64, "", partSize,
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opts.ServerSideEncryption,
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!opts.DisableContentSha256,
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)
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if uerr != nil {
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return UploadInfo{}, uerr
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}
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// Save successfully uploaded part metadata.
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partsInfo[partNumber] = objPart
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// Save successfully uploaded size.
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totalUploadedSize += partSize
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}
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// Verify if we uploaded all the data.
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if size > 0 {
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if totalUploadedSize != size {
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return UploadInfo{}, errUnexpectedEOF(totalUploadedSize, size, bucketName, objectName)
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}
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}
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// Complete multipart upload.
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var complMultipartUpload completeMultipartUpload
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// Loop over total uploaded parts to save them in
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// Parts array before completing the multipart request.
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for i := 1; i < partNumber; i++ {
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part, ok := partsInfo[i]
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if !ok {
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return UploadInfo{}, errInvalidArgument(fmt.Sprintf("Missing part number %d", i))
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}
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complMultipartUpload.Parts = append(complMultipartUpload.Parts, CompletePart{
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ETag: part.ETag,
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PartNumber: part.PartNumber,
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})
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}
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// Sort all completed parts.
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sort.Sort(completedParts(complMultipartUpload.Parts))
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uploadInfo, err := c.completeMultipartUpload(ctx, bucketName, objectName, uploadID, complMultipartUpload, PutObjectOptions{})
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if err != nil {
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return UploadInfo{}, err
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}
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uploadInfo.Size = totalUploadedSize
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return uploadInfo, nil
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}
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// putObject special function used Google Cloud Storage. This special function
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// is used for Google Cloud Storage since Google's multipart API is not S3 compatible.
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func (c *Client) putObject(ctx context.Context, bucketName, objectName string, reader io.Reader, size int64, opts PutObjectOptions) (info UploadInfo, err error) {
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// Input validation.
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if err := s3utils.CheckValidBucketName(bucketName); err != nil {
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return UploadInfo{}, err
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}
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if err := s3utils.CheckValidObjectName(objectName); err != nil {
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return UploadInfo{}, err
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}
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// Size -1 is only supported on Google Cloud Storage, we error
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// out in all other situations.
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if size < 0 && !s3utils.IsGoogleEndpoint(*c.endpointURL) {
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return UploadInfo{}, errEntityTooSmall(size, bucketName, objectName)
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}
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if opts.SendContentMd5 && s3utils.IsGoogleEndpoint(*c.endpointURL) && size < 0 {
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return UploadInfo{}, errInvalidArgument("MD5Sum cannot be calculated with size '-1'")
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}
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if size > 0 {
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if isReadAt(reader) && !isObject(reader) {
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seeker, ok := reader.(io.Seeker)
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if ok {
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offset, err := seeker.Seek(0, io.SeekCurrent)
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if err != nil {
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return UploadInfo{}, errInvalidArgument(err.Error())
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}
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reader = io.NewSectionReader(reader.(io.ReaderAt), offset, size)
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}
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}
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}
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var md5Base64 string
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if opts.SendContentMd5 {
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// Create a buffer.
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buf := make([]byte, size)
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length, rErr := readFull(reader, buf)
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if rErr != nil && rErr != io.ErrUnexpectedEOF && rErr != io.EOF {
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return UploadInfo{}, rErr
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}
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// Calculate md5sum.
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hash := c.md5Hasher()
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hash.Write(buf[:length])
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md5Base64 = base64.StdEncoding.EncodeToString(hash.Sum(nil))
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reader = bytes.NewReader(buf[:length])
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hash.Close()
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}
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// Update progress reader appropriately to the latest offset as we
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// read from the source.
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readSeeker := newHook(reader, opts.Progress)
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// This function does not calculate sha256 and md5sum for payload.
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// Execute put object.
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return c.putObjectDo(ctx, bucketName, objectName, readSeeker, md5Base64, "", size, opts)
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}
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// putObjectDo - executes the put object http operation.
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// NOTE: You must have WRITE permissions on a bucket to add an object to it.
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func (c *Client) putObjectDo(ctx context.Context, bucketName, objectName string, reader io.Reader, md5Base64, sha256Hex string, size int64, opts PutObjectOptions) (UploadInfo, error) {
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// Input validation.
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if err := s3utils.CheckValidBucketName(bucketName); err != nil {
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return UploadInfo{}, err
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}
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if err := s3utils.CheckValidObjectName(objectName); err != nil {
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return UploadInfo{}, err
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}
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// Set headers.
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customHeader := opts.Header()
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// Populate request metadata.
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reqMetadata := requestMetadata{
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bucketName: bucketName,
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objectName: objectName,
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customHeader: customHeader,
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contentBody: reader,
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contentLength: size,
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contentMD5Base64: md5Base64,
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contentSHA256Hex: sha256Hex,
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streamSha256: !opts.DisableContentSha256,
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}
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if opts.Internal.SourceVersionID != "" {
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if opts.Internal.SourceVersionID != nullVersionID {
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if _, err := uuid.Parse(opts.Internal.SourceVersionID); err != nil {
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return UploadInfo{}, errInvalidArgument(err.Error())
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}
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}
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urlValues := make(url.Values)
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urlValues.Set("versionId", opts.Internal.SourceVersionID)
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reqMetadata.queryValues = urlValues
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}
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// Execute PUT an objectName.
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resp, err := c.executeMethod(ctx, http.MethodPut, reqMetadata)
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defer closeResponse(resp)
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if err != nil {
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return UploadInfo{}, err
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}
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if resp != nil {
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if resp.StatusCode != http.StatusOK {
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return UploadInfo{}, httpRespToErrorResponse(resp, bucketName, objectName)
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}
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}
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// extract lifecycle expiry date and rule ID
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expTime, ruleID := amzExpirationToExpiryDateRuleID(resp.Header.Get(amzExpiration))
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return UploadInfo{
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Bucket: bucketName,
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Key: objectName,
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ETag: trimEtag(resp.Header.Get("ETag")),
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VersionID: resp.Header.Get(amzVersionID),
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Size: size,
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Expiration: expTime,
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ExpirationRuleID: ruleID,
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}, nil
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}
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