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pass reader around instead of []byte

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This commit is contained in:
tsmethurst 2022-01-16 18:52:55 +01:00
parent 6f5ccf4355
commit 589bb9df02
14 changed files with 246 additions and 394 deletions
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5
internal/federation/dereferencing/account.go
View file

@ -23,6 +23,7 @@
"encoding/json"
"errors"
"fmt"
"io"
"net/url"
"strings"
@ -251,7 +252,7 @@ func (d *deref) fetchHeaderAndAviForAccount(ctx context.Context, targetAccount *
return err
}
data := func(innerCtx context.Context) ([]byte, error) {
data := func(innerCtx context.Context) (io.Reader, error) {
return t.DereferenceMedia(innerCtx, avatarIRI)
}
@ -273,7 +274,7 @@ func (d *deref) fetchHeaderAndAviForAccount(ctx context.Context, targetAccount *
return err
}
data := func(innerCtx context.Context) ([]byte, error) {
data := func(innerCtx context.Context) (io.Reader, error) {
return t.DereferenceMedia(innerCtx, headerIRI)
}

3
internal/federation/dereferencing/media.go
View file

@ -21,6 +21,7 @@
import (
"context"
"fmt"
"io"
"net/url"
"github.com/superseriousbusiness/gotosocial/internal/media"
@ -41,7 +42,7 @@ func (d *deref) GetRemoteMedia(ctx context.Context, requestingUsername string, a
return nil, fmt.Errorf("GetRemoteMedia: error parsing url: %s", err)
}
dataFunc := func(innerCtx context.Context) ([]byte, error) {
dataFunc := func(innerCtx context.Context) (io.Reader, error) {
return t.DereferenceMedia(innerCtx, derefURI)
}

46
internal/media/image.go
View file

@ -26,6 +26,7 @@
"image/gif"
"image/jpeg"
"image/png"
"io"
"github.com/buckket/go-blurhash"
"github.com/nfnt/resize"
@ -37,17 +38,17 @@
thumbnailMaxHeight = 512
)
type ImageMeta struct {
image []byte
type imageMeta struct {
width int
height int
size int
aspect float64
blurhash string
blurhash string // defined only for calls to deriveThumbnail if createBlurhash is true
small []byte // defined only for calls to deriveStaticEmoji or deriveThumbnail
}
func decodeGif(b []byte) (*ImageMeta, error) {
gif, err := gif.DecodeAll(bytes.NewReader(b))
func decodeGif(r io.Reader) (*imageMeta, error) {
gif, err := gif.DecodeAll(r)
if err != nil {
return nil, err
}
@ -58,8 +59,7 @@ func decodeGif(b []byte) (*ImageMeta, error) {
size := width * height
aspect := float64(width) / float64(height)
return &ImageMeta{
image: b,
return &imageMeta{
width: width,
height: height,
size: size,
@ -67,15 +67,15 @@ func decodeGif(b []byte) (*ImageMeta, error) {
}, nil
}
func decodeImage(b []byte, contentType string) (*ImageMeta, error) {
func decodeImage(r io.Reader, contentType string) (*imageMeta, error) {
var i image.Image
var err error
switch contentType {
case mimeImageJpeg:
i, err = jpeg.Decode(bytes.NewReader(b))
i, err = jpeg.Decode(r)
case mimeImagePng:
i, err = png.Decode(bytes.NewReader(b))
i, err = png.Decode(r)
default:
err = fmt.Errorf("content type %s not recognised", contentType)
}
@ -93,8 +93,7 @@ func decodeImage(b []byte, contentType string) (*ImageMeta, error) {
size := width * height
aspect := float64(width) / float64(height)
return &ImageMeta{
image: b,
return &imageMeta{
width: width,
height: height,
size: size,
@ -111,17 +110,17 @@ func decodeImage(b []byte, contentType string) (*ImageMeta, error) {
//
// If createBlurhash is false, then the blurhash field on the returned ImageAndMeta
// will be an empty string.
func deriveThumbnail(b []byte, contentType string, createBlurhash bool) (*ImageMeta, error) {
func deriveThumbnail(r io.Reader, contentType string, createBlurhash bool) (*imageMeta, error) {
var i image.Image
var err error
switch contentType {
case mimeImageJpeg:
i, err = jpeg.Decode(bytes.NewReader(b))
i, err = jpeg.Decode(r)
case mimeImagePng:
i, err = png.Decode(bytes.NewReader(b))
i, err = png.Decode(r)
case mimeImageGif:
i, err = gif.Decode(bytes.NewReader(b))
i, err = gif.Decode(r)
default:
err = fmt.Errorf("content type %s can't be thumbnailed", contentType)
}
@ -140,7 +139,7 @@ func deriveThumbnail(b []byte, contentType string, createBlurhash bool) (*ImageM
size := width * height
aspect := float64(width) / float64(height)
im := &ImageMeta{
im := &imageMeta{
width: width,
height: height,
size: size,
@ -165,25 +164,24 @@ func deriveThumbnail(b []byte, contentType string, createBlurhash bool) (*ImageM
}); err != nil {
return nil, err
}
im.image = out.Bytes()
im.small = out.Bytes()
return im, nil
}
// deriveStaticEmojji takes a given gif or png of an emoji, decodes it, and re-encodes it as a static png.
func deriveStaticEmoji(b []byte, contentType string) (*ImageMeta, error) {
func deriveStaticEmoji(r io.Reader, contentType string) (*imageMeta, error) {
var i image.Image
var err error
switch contentType {
case mimeImagePng:
i, err = png.Decode(bytes.NewReader(b))
i, err = png.Decode(r)
if err != nil {
return nil, err
}
case mimeImageGif:
i, err = gif.Decode(bytes.NewReader(b))
i, err = gif.Decode(r)
if err != nil {
return nil, err
}
@ -195,8 +193,8 @@ func deriveStaticEmoji(b []byte, contentType string) (*ImageMeta, error) {
if err := png.Encode(out, i); err != nil {
return nil, err
}
return &ImageMeta{
image: out.Bytes(),
return &imageMeta{
small: out.Bytes(),
}, nil
}

32
internal/media/manager_test.go
View file

@ -19,8 +19,10 @@
package media_test
import (
"bytes"
"context"
"fmt"
"io"
"os"
"testing"
"time"
@ -37,9 +39,13 @@ type ManagerTestSuite struct {
func (suite *ManagerTestSuite) TestSimpleJpegProcessBlocking() {
ctx := context.Background()
data := func(_ context.Context) ([]byte, error) {
data := func(_ context.Context) (io.Reader, error) {
// load bytes from a test image
return os.ReadFile("./test/test-jpeg.jpg")
b, err := os.ReadFile("./test/test-jpeg.jpg")
if err != nil {
panic(err)
}
return bytes.NewBuffer(b), nil
}
accountID := "01FS1X72SK9ZPW0J1QQ68BD264"
@ -103,9 +109,13 @@ func (suite *ManagerTestSuite) TestSimpleJpegProcessBlocking() {
func (suite *ManagerTestSuite) TestSimpleJpegProcessAsync() {
ctx := context.Background()
data := func(_ context.Context) ([]byte, error) {
data := func(_ context.Context) (io.Reader, error) {
// load bytes from a test image
return os.ReadFile("./test/test-jpeg.jpg")
b, err := os.ReadFile("./test/test-jpeg.jpg")
if err != nil {
panic(err)
}
return bytes.NewBuffer(b), nil
}
accountID := "01FS1X72SK9ZPW0J1QQ68BD264"
@ -175,16 +185,16 @@ func (suite *ManagerTestSuite) TestSimpleJpegProcessAsync() {
func (suite *ManagerTestSuite) TestSimpleJpegQueueSpamming() {
// in this test, we spam the manager queue with 50 new media requests, just to see how it holds up
ctx := context.Background()
// load bytes from a test image
testBytes, err := os.ReadFile("./test/test-jpeg.jpg")
suite.NoError(err)
suite.NotEmpty(testBytes)
b, err := os.ReadFile("./test/test-jpeg.jpg")
if err != nil {
panic(err)
}
data := func(_ context.Context) ([]byte, error) {
return testBytes, nil
data := func(_ context.Context) (io.Reader, error) {
// load bytes from a test image
return bytes.NewReader(b), nil
}
accountID := "01FS1X72SK9ZPW0J1QQ68BD264"

178
internal/media/processingemoji.go
View file

@ -19,8 +19,10 @@
package media
import (
"bytes"
"context"
"fmt"
"io"
"strings"
"sync"
"time"
@ -46,22 +48,14 @@ type ProcessingEmoji struct {
emoji *gtsmodel.Emoji
data DataFunc
rawData []byte // will be set once the fetchRawData function has been called
read bool // bool indicating that data function has been triggered already
/*
below fields represent the processing state of the static version of the emoji
*/
staticState processState
static *ImageMeta
/*
below fields represent the processing state of the emoji image
below fields represent the processing state of the static of the emoji
*/
staticState processState
fullSizeState processState
fullSize *ImageMeta
/*
below pointers to database and storage are maintained so that
@ -85,21 +79,18 @@ func (p *ProcessingEmoji) EmojiID() string {
// LoadEmoji blocks until the static and fullsize image
// has been processed, and then returns the completed emoji.
func (p *ProcessingEmoji) LoadEmoji(ctx context.Context) (*gtsmodel.Emoji, error) {
if err := p.fetchRawData(ctx); err != nil {
p.mu.Lock()
defer p.mu.Unlock()
if err := p.store(ctx); err != nil {
return nil, err
}
if _, err := p.loadStatic(ctx); err != nil {
return nil, err
}
if _, err := p.loadFullSize(ctx); err != nil {
if err := p.loadStatic(ctx); err != nil {
return nil, err
}
// store the result in the database before returning it
p.mu.Lock()
defer p.mu.Unlock()
if !p.insertedInDB {
if err := p.database.Put(ctx, p.emoji); err != nil {
return nil, err
@ -116,118 +107,85 @@ func (p *ProcessingEmoji) Finished() bool {
return p.staticState == complete && p.fullSizeState == complete
}
func (p *ProcessingEmoji) loadStatic(ctx context.Context) (*ImageMeta, error) {
p.mu.Lock()
defer p.mu.Unlock()
func (p *ProcessingEmoji) loadStatic(ctx context.Context) error {
switch p.staticState {
case received:
// we haven't processed a static version of this emoji yet so do it now
static, err := deriveStaticEmoji(p.rawData, p.emoji.ImageContentType)
// stream the original file out of storage...
stored, err := p.storage.GetStream(p.emoji.ImagePath)
if err != nil {
p.err = fmt.Errorf("error deriving static: %s", err)
p.err = fmt.Errorf("loadStatic: error fetching file from storage: %s", err)
p.staticState = errored
return nil, p.err
return p.err
}
// we haven't processed a static version of this emoji yet so do it now
static, err := deriveStaticEmoji(stored, p.emoji.ImageContentType)
if err != nil {
p.err = fmt.Errorf("loadStatic: error deriving static: %s", err)
p.staticState = errored
return p.err
}
if err := stored.Close(); err != nil {
p.err = fmt.Errorf("loadStatic: error closing stored full size: %s", err)
p.staticState = errored
return p.err
}
// put the static in storage
if err := p.storage.Put(p.emoji.ImageStaticPath, static.image); err != nil {
p.err = fmt.Errorf("error storing static: %s", err)
if err := p.storage.Put(p.emoji.ImageStaticPath, static.small); err != nil {
p.err = fmt.Errorf("loadStatic: error storing static: %s", err)
p.staticState = errored
return nil, p.err
return p.err
}
// set appropriate fields on the emoji based on the static version we derived
p.emoji.ImageStaticFileSize = len(static.image)
// set the static on the processing emoji
p.static = static
p.emoji.ImageStaticFileSize = len(static.small)
// we're done processing the static version of the emoji!
p.staticState = complete
fallthrough
case complete:
return p.static, nil
return nil
case errored:
return nil, p.err
return p.err
}
return nil, fmt.Errorf("static processing status %d unknown", p.staticState)
return fmt.Errorf("static processing status %d unknown", p.staticState)
}
func (p *ProcessingEmoji) loadFullSize(ctx context.Context) (*ImageMeta, error) {
p.mu.Lock()
defer p.mu.Unlock()
switch p.fullSizeState {
case received:
var err error
var decoded *ImageMeta
ct := p.emoji.ImageContentType
switch ct {
case mimeImagePng:
decoded, err = decodeImage(p.rawData, ct)
case mimeImageGif:
decoded, err = decodeGif(p.rawData)
default:
err = fmt.Errorf("content type %s not a processible emoji type", ct)
}
if err != nil {
p.err = err
p.fullSizeState = errored
return nil, err
}
// put the full size emoji in storage
if err := p.storage.Put(p.emoji.ImagePath, decoded.image); err != nil {
p.err = fmt.Errorf("error storing full size emoji: %s", err)
p.fullSizeState = errored
return nil, p.err
}
// set the fullsize of this media
p.fullSize = decoded
// we're done processing the full-size emoji
p.fullSizeState = complete
fallthrough
case complete:
return p.fullSize, nil
case errored:
return nil, p.err
}
return nil, fmt.Errorf("full size processing status %d unknown", p.fullSizeState)
}
// fetchRawData calls the data function attached to p if it hasn't been called yet,
// and updates the underlying emoji fields as necessary.
// It should only be called from within a function that already has a lock on p!
func (p *ProcessingEmoji) fetchRawData(ctx context.Context) error {
// store calls the data function attached to p if it hasn't been called yet,
// and updates the underlying attachment fields as necessary. It will then stream
// bytes from p's reader directly into storage so that it can be retrieved later.
func (p *ProcessingEmoji) store(ctx context.Context) error {
// check if we've already done this and bail early if we have
if p.rawData != nil {
if p.read {
return nil
}
// execute the data function and pin the raw bytes for further processing
b, err := p.data(ctx)
// execute the data function to get the reader out of it
reader, err := p.data(ctx)
if err != nil {
return fmt.Errorf("fetchRawData: error executing data function: %s", err)
}
p.rawData = b
// now we have the data we can work out the content type
contentType, err := parseContentType(p.rawData)
if err != nil {
return fmt.Errorf("fetchRawData: error parsing content type: %s", err)
return fmt.Errorf("store: error executing data function: %s", err)
}
// extract no more than 261 bytes from the beginning of the file -- this is the header
firstBytes := make([]byte, maxFileHeaderBytes)
if _, err := reader.Read(firstBytes); err != nil {
return fmt.Errorf("store: error reading initial %d bytes: %s", maxFileHeaderBytes, err)
}
// now we have the file header we can work out the content type from it
contentType, err := parseContentType(firstBytes)
if err != nil {
return fmt.Errorf("store: error parsing content type: %s", err)
}
// bail if this is a type we can't process
if !supportedEmoji(contentType) {
return fmt.Errorf("fetchRawData: content type %s was not valid for an emoji", contentType)
return fmt.Errorf("store: content type %s was not valid for an emoji", contentType)
}
// extract the file extension
split := strings.Split(contentType, "/")
extension := split[1] // something like 'gif'
@ -236,8 +194,24 @@ func (p *ProcessingEmoji) fetchRawData(ctx context.Context) error {
p.emoji.ImageURL = uris.GenerateURIForAttachment(p.instanceAccountID, string(TypeEmoji), string(SizeOriginal), p.emoji.ID, extension)
p.emoji.ImagePath = fmt.Sprintf("%s/%s/%s/%s.%s", p.instanceAccountID, TypeEmoji, SizeOriginal, p.emoji.ID, extension)
p.emoji.ImageContentType = contentType
p.emoji.ImageFileSize = len(p.rawData)
// concatenate the first bytes with the existing bytes still in the reader (thanks Mara)
multiReader := io.MultiReader(bytes.NewBuffer(firstBytes), reader)
// store this for now -- other processes can pull it out of storage as they please
if err := p.storage.PutStream(p.emoji.ImagePath, multiReader); err != nil {
return fmt.Errorf("store: error storing stream: %s", err)
}
p.emoji.ImageFileSize = 36702 // TODO: set this based on the result of PutStream
// if the original reader is a readcloser, close it since we're done with it now
if rc, ok := reader.(io.ReadCloser); ok {
if err := rc.Close(); err != nil {
return fmt.Errorf("store: error closing readcloser: %s", err)
}
}
p.read = true
return nil
}

185
internal/media/processingmedia.go
View file

@ -19,8 +19,10 @@
package media
import (
"bytes"
"context"
"fmt"
"io"
"strings"
"sync"
"time"
@ -44,22 +46,10 @@ type ProcessingMedia struct {
attachment *gtsmodel.MediaAttachment
data DataFunc
read bool // bool indicating that data function has been triggered already
rawData []byte // will be set once the fetchRawData function has been called
/*
below fields represent the processing state of the media thumbnail
*/
thumbstate processState
thumb *ImageMeta
/*
below fields represent the processing state of the full-sized media
*/
fullSizeState processState
fullSize *ImageMeta
thumbstate processState // the processing state of the media thumbnail
fullSizeState processState // the processing state of the full-sized media
/*
below pointers to database and storage are maintained so that
@ -83,21 +73,22 @@ func (p *ProcessingMedia) AttachmentID() string {
// LoadAttachment blocks until the thumbnail and fullsize content
// has been processed, and then returns the completed attachment.
func (p *ProcessingMedia) LoadAttachment(ctx context.Context) (*gtsmodel.MediaAttachment, error) {
if err := p.fetchRawData(ctx); err != nil {
p.mu.Lock()
defer p.mu.Unlock()
if err := p.store(ctx); err != nil {
return nil, err
}
if _, err := p.loadThumb(ctx); err != nil {
if err := p.loadThumb(ctx); err != nil {
return nil, err
}
if _, err := p.loadFullSize(ctx); err != nil {
if err := p.loadFullSize(ctx); err != nil {
return nil, err
}
// store the result in the database before returning it
p.mu.Lock()
defer p.mu.Unlock()
if !p.insertedInDB {
if err := p.database.Put(ctx, p.attachment); err != nil {
return nil, err
@ -114,10 +105,7 @@ func (p *ProcessingMedia) Finished() bool {
return p.thumbstate == complete && p.fullSizeState == complete
}
func (p *ProcessingMedia) loadThumb(ctx context.Context) (*ImageMeta, error) {
p.mu.Lock()
defer p.mu.Unlock()
func (p *ProcessingMedia) loadThumb(ctx context.Context) error {
switch p.thumbstate {
case received:
// we haven't processed a thumbnail for this media yet so do it now
@ -129,87 +117,94 @@ func (p *ProcessingMedia) loadThumb(ctx context.Context) (*ImageMeta, error) {
createBlurhash = true
}
thumb, err := deriveThumbnail(p.rawData, p.attachment.File.ContentType, createBlurhash)
// stream the original file out of storage...
stored, err := p.storage.GetStream(p.attachment.File.Path)
if err != nil {
p.err = fmt.Errorf("error deriving thumbnail: %s", err)
p.err = fmt.Errorf("loadThumb: error fetching file from storage: %s", err)
p.thumbstate = errored
return nil, p.err
return p.err
}
// ... and into the derive thumbnail function
thumb, err := deriveThumbnail(stored, p.attachment.File.ContentType, createBlurhash)
if err != nil {
p.err = fmt.Errorf("loadThumb: error deriving thumbnail: %s", err)
p.thumbstate = errored
return p.err
}
if err := stored.Close(); err != nil {
p.err = fmt.Errorf("loadThumb: error closing stored full size: %s", err)
p.thumbstate = errored
return p.err
}
// put the thumbnail in storage
if err := p.storage.Put(p.attachment.Thumbnail.Path, thumb.image); err != nil {
p.err = fmt.Errorf("error storing thumbnail: %s", err)
if err := p.storage.Put(p.attachment.Thumbnail.Path, thumb.small); err != nil {
p.err = fmt.Errorf("loadThumb: error storing thumbnail: %s", err)
p.thumbstate = errored
return nil, p.err
return p.err
}
// set appropriate fields on the attachment based on the thumbnail we derived
if createBlurhash {
p.attachment.Blurhash = thumb.blurhash
}
p.attachment.FileMeta.Small = gtsmodel.Small{
Width: thumb.width,
Height: thumb.height,
Size: thumb.size,
Aspect: thumb.aspect,
}
p.attachment.Thumbnail.FileSize = len(thumb.image)
// set the thumbnail of this media
p.thumb = thumb
p.attachment.Thumbnail.FileSize = len(thumb.small)
// we're done processing the thumbnail!
p.thumbstate = complete
fallthrough
case complete:
return p.thumb, nil
return nil
case errored:
return nil, p.err
return p.err
}
return nil, fmt.Errorf("thumbnail processing status %d unknown", p.thumbstate)
return fmt.Errorf("loadThumb: thumbnail processing status %d unknown", p.thumbstate)
}
func (p *ProcessingMedia) loadFullSize(ctx context.Context) (*ImageMeta, error) {
p.mu.Lock()
defer p.mu.Unlock()
func (p *ProcessingMedia) loadFullSize(ctx context.Context) error {
switch p.fullSizeState {
case received:
var clean []byte
var err error
var decoded *ImageMeta
var decoded *imageMeta
// stream the original file out of storage...
stored, err := p.storage.GetStream(p.attachment.File.Path)
if err != nil {
p.err = fmt.Errorf("loadFullSize: error fetching file from storage: %s", err)
p.fullSizeState = errored
return p.err
}
// decode the image
ct := p.attachment.File.ContentType
switch ct {
case mimeImageJpeg, mimeImagePng:
// first 'clean' image by purging exif data from it
var exifErr error
if clean, exifErr = purgeExif(p.rawData); exifErr != nil {
err = exifErr
break
}
decoded, err = decodeImage(clean, ct)
decoded, err = decodeImage(stored, ct)
case mimeImageGif:
// gifs are already clean - no exif data to remove
clean = p.rawData
decoded, err = decodeGif(clean)
decoded, err = decodeGif(stored)
default:
err = fmt.Errorf("content type %s not a processible image type", ct)
err = fmt.Errorf("loadFullSize: content type %s not a processible image type", ct)
}
if err != nil {
p.err = err
p.fullSizeState = errored
return nil, err
return p.err
}
// put the full size in storage
if err := p.storage.Put(p.attachment.File.Path, decoded.image); err != nil {
p.err = fmt.Errorf("error storing full size image: %s", err)
p.fullSizeState = errored
return nil, p.err
if err := stored.Close(); err != nil {
p.err = fmt.Errorf("loadFullSize: error closing stored full size: %s", err)
p.thumbstate = errored
return p.err
}
// set appropriate fields on the attachment based on the image we derived
@ -219,56 +214,58 @@ func (p *ProcessingMedia) loadFullSize(ctx context.Context) (*ImageMeta, error)
Size: decoded.size,
Aspect: decoded.aspect,
}
p.attachment.File.FileSize = len(decoded.image)
p.attachment.File.UpdatedAt = time.Now()
p.attachment.Processing = gtsmodel.ProcessingStatusProcessed
// set the fullsize of this media
p.fullSize = decoded
// we're done processing the full-size image
p.fullSizeState = complete
fallthrough
case complete:
return p.fullSize, nil
return nil
case errored:
return nil, p.err
return p.err
}
return nil, fmt.Errorf("full size processing status %d unknown", p.fullSizeState)
return fmt.Errorf("loadFullSize: full size processing status %d unknown", p.fullSizeState)
}
// fetchRawData calls the data function attached to p if it hasn't been called yet,
// and updates the underlying attachment fields as necessary.
// It should only be called from within a function that already has a lock on p!
func (p *ProcessingMedia) fetchRawData(ctx context.Context) error {
// store calls the data function attached to p if it hasn't been called yet,
// and updates the underlying attachment fields as necessary. It will then stream
// bytes from p's reader directly into storage so that it can be retrieved later.
func (p *ProcessingMedia) store(ctx context.Context) error {
// check if we've already done this and bail early if we have
if p.rawData != nil {
if p.read {
return nil
}
// execute the data function and pin the raw bytes for further processing
b, err := p.data(ctx)
// execute the data function to get the reader out of it
reader, err := p.data(ctx)
if err != nil {
return fmt.Errorf("fetchRawData: error executing data function: %s", err)
}
p.rawData = b
// now we have the data we can work out the content type
contentType, err := parseContentType(p.rawData)
if err != nil {
return fmt.Errorf("fetchRawData: error parsing content type: %s", err)
return fmt.Errorf("store: error executing data function: %s", err)
}
// extract no more than 261 bytes from the beginning of the file -- this is the header
firstBytes := make([]byte, maxFileHeaderBytes)
if _, err := reader.Read(firstBytes); err != nil {
return fmt.Errorf("store: error reading initial %d bytes: %s", maxFileHeaderBytes, err)
}
// now we have the file header we can work out the content type from it
contentType, err := parseContentType(firstBytes)
if err != nil {
return fmt.Errorf("store: error parsing content type: %s", err)
}
// bail if this is a type we can't process
if !supportedImage(contentType) {
return fmt.Errorf("fetchRawData: media type %s not (yet) supported", contentType)
return fmt.Errorf("store: media type %s not (yet) supported", contentType)
}
// extract the file extension
split := strings.Split(contentType, "/")
if len(split) != 2 {
return fmt.Errorf("fetchRawData: content type %s was not valid", contentType)
return fmt.Errorf("store: content type %s was not valid", contentType)
}
extension := split[1] // something like 'jpeg'
// set some additional fields on the attachment now that
@ -282,6 +279,22 @@ func (p *ProcessingMedia) fetchRawData(ctx context.Context) error {
p.attachment.File.Path = fmt.Sprintf("%s/%s/%s/%s.%s", p.attachment.AccountID, TypeAttachment, SizeOriginal, p.attachment.ID, extension)
p.attachment.File.ContentType = contentType
// concatenate the first bytes with the existing bytes still in the reader (thanks Mara)
multiReader := io.MultiReader(bytes.NewBuffer(firstBytes), reader)
// store this for now -- other processes can pull it out of storage as they please
if err := p.storage.PutStream(p.attachment.File.Path, multiReader); err != nil {
return fmt.Errorf("store: error storing stream: %s", err)
}
// if the original reader is a readcloser, close it since we're done with it now
if rc, ok := reader.(io.ReadCloser); ok {
if err := rc.Close(); err != nil {
return fmt.Errorf("store: error closing readcloser: %s", err)
}
}
p.read = true
return nil
}

5
internal/media/types.go
View file

@ -20,6 +20,7 @@
import (
"context"
"io"
"time"
)
@ -28,7 +29,7 @@
//
// See: https://en.wikipedia.org/wiki/File_format#File_header
// and https://github.com/h2non/filetype
const maxFileHeaderBytes = 262
const maxFileHeaderBytes = 261
// mime consts
const (
@ -117,4 +118,4 @@ type AdditionalEmojiInfo struct {
}
// DataFunc represents a function used to retrieve the raw bytes of a piece of media.
type DataFunc func(ctx context.Context) ([]byte, error)
type DataFunc func(ctx context.Context) (io.Reader, error)

11
internal/media/util.go
View file

@ -19,7 +19,6 @@
package media
import (
"bytes"
"errors"
"fmt"
@ -28,11 +27,11 @@
// parseContentType parses the MIME content type from a file, returning it as a string in the form (eg., "image/jpeg").
// Returns an error if the content type is not something we can process.
func parseContentType(content []byte) (string, error) {
// read in the first bytes of the file
fileHeader := make([]byte, maxFileHeaderBytes)
if _, err := bytes.NewReader(content).Read(fileHeader); err != nil {
return "", fmt.Errorf("could not read first magic bytes of file: %s", err)
//
// Fileheader should be no longer than 262 bytes; anything more than this is inefficient.
func parseContentType(fileHeader []byte) (string, error) {
if fhLength := len(fileHeader); fhLength > maxFileHeaderBytes {
return "", fmt.Errorf("parseContentType requires %d bytes max, we got %d", maxFileHeaderBytes, fhLength)
}
kind, err := filetype.Match(fileHeader)

42
internal/processing/account/update.go
View file

@ -19,9 +19,7 @@
package account
import (
"bytes"
"context"
"errors"
"fmt"
"io"
"mime/multipart"
@ -142,24 +140,8 @@ func (p *processor) UpdateAvatar(ctx context.Context, avatar *multipart.FileHead
return nil, fmt.Errorf("UpdateAvatar: avatar with size %d exceeded max image size of %d bytes", avatar.Size, maxImageSize)
}
dataFunc := func(ctx context.Context) ([]byte, error) {
// pop open the fileheader
f, err := avatar.Open()
if err != nil {
return nil, fmt.Errorf("UpdateAvatar: could not read provided avatar: %s", err)
}
// extract the bytes
buf := new(bytes.Buffer)
size, err := io.Copy(buf, f)
if err != nil {
return nil, fmt.Errorf("UpdateAvatar: could not read provided avatar: %s", err)
}
if size == 0 {
return nil, errors.New("UpdateAvatar: could not read provided avatar: size 0 bytes")
}
return buf.Bytes(), f.Close()
dataFunc := func(ctx context.Context) (io.Reader, error) {
return avatar.Open()
}
isAvatar := true
@ -184,24 +166,8 @@ func (p *processor) UpdateHeader(ctx context.Context, header *multipart.FileHead
return nil, fmt.Errorf("UpdateHeader: header with size %d exceeded max image size of %d bytes", header.Size, maxImageSize)
}
dataFunc := func(ctx context.Context) ([]byte, error) {
// pop open the fileheader
f, err := header.Open()
if err != nil {
return nil, fmt.Errorf("UpdateHeader: could not read provided header: %s", err)
}
// extract the bytes
buf := new(bytes.Buffer)
size, err := io.Copy(buf, f)
if err != nil {
return nil, fmt.Errorf("UpdateHeader: could not read provided header: %s", err)
}
if size == 0 {
return nil, errors.New("UpdateHeader: could not read provided header: size 0 bytes")
}
return buf.Bytes(), f.Close()
dataFunc := func(ctx context.Context) (io.Reader, error) {
return header.Open()
}
isHeader := true

20
internal/processing/admin/emoji.go
View file

@ -19,9 +19,7 @@
package admin
import (
"bytes"
"context"
"errors"
"fmt"
"io"
@ -38,22 +36,8 @@ func (p *processor) EmojiCreate(ctx context.Context, account *gtsmodel.Account,
return nil, gtserror.NewErrorNotAuthorized(fmt.Errorf("user %s not an admin", user.ID), "user is not an admin")
}
data := func(innerCtx context.Context) ([]byte, error) {
// open the emoji and extract the bytes from it
f, err := form.Image.Open()
if err != nil {
return nil, fmt.Errorf("error opening emoji: %s", err)
}
buf := new(bytes.Buffer)
size, err := io.Copy(buf, f)
if err != nil {
return nil, fmt.Errorf("error reading emoji: %s", err)
}
if size == 0 {
return nil, errors.New("could not read provided emoji: size 0 bytes")
}
return buf.Bytes(), f.Close()
data := func(innerCtx context.Context) (io.Reader, error) {
return form.Image.Open()
}
emojiID, err := id.NewRandomULID()

19
internal/processing/media/create.go
View file

@ -19,9 +19,7 @@
package media
import (
"bytes"
"context"
"errors"
"fmt"
"io"
@ -31,21 +29,8 @@
)
func (p *processor) Create(ctx context.Context, account *gtsmodel.Account, form *apimodel.AttachmentRequest) (*apimodel.Attachment, error) {
data := func(innerCtx context.Context) ([]byte, error) {
// open the attachment and extract the bytes from it
f, err := form.File.Open()
if err != nil {
return nil, fmt.Errorf("error opening attachment: %s", err)
}
buf := new(bytes.Buffer)
size, err := io.Copy(buf, f)
if err != nil {
return nil, fmt.Errorf("error reading attachment: %s", err)
}
if size == 0 {
return nil, errors.New("could not read provided attachment: size 0 bytes")
}
return buf.Bytes(), f.Close()
data := func(innerCtx context.Context) (io.Reader, error) {
return form.File.Open()
}
focusX, focusY, err := parseFocus(form.Focus)

7
internal/transport/derefmedia.go
View file

@ -21,14 +21,14 @@
import (
"context"
"fmt"
"io/ioutil"
"io"
"net/http"
"net/url"
"github.com/sirupsen/logrus"
)
func (t *transport) DereferenceMedia(ctx context.Context, iri *url.URL) ([]byte, error) {
func (t *transport) DereferenceMedia(ctx context.Context, iri *url.URL) (io.ReadCloser, error) {
l := logrus.WithField("func", "DereferenceMedia")
l.Debugf("performing GET to %s", iri.String())
req, err := http.NewRequestWithContext(ctx, "GET", iri.String(), nil)
@ -50,9 +50,8 @@ func (t *transport) DereferenceMedia(ctx context.Context, iri *url.URL) ([]byte,
if err != nil {
return nil, err
}
defer resp.Body.Close()
if resp.StatusCode != http.StatusOK {
return nil, fmt.Errorf("GET request to %s failed (%d): %s", iri.String(), resp.StatusCode, resp.Status)
}
return ioutil.ReadAll(resp.Body)
return resp.Body, nil
}

5
internal/transport/transport.go
View file

@ -21,6 +21,7 @@
import (
"context"
"crypto"
"io"
"net/url"
"sync"
@ -33,8 +34,8 @@
// functionality for fetching remote media.
type Transport interface {
pub.Transport
// DereferenceMedia fetches the bytes of the given media attachment IRI.
DereferenceMedia(ctx context.Context, iri *url.URL) ([]byte, error)
// DereferenceMedia fetches the given media attachment IRI.
DereferenceMedia(ctx context.Context, iri *url.URL) (io.ReadCloser, error)
// DereferenceInstance dereferences remote instance information, first by checking /api/v1/instance, and then by checking /.well-known/nodeinfo.
DereferenceInstance(ctx context.Context, iri *url.URL) (*gtsmodel.Instance, error)
// Finger performs a webfinger request with the given username and domain, and returns the bytes from the response body.

82
testrig/storage.go
View file

@ -19,20 +19,16 @@
package testrig
import (
"bytes"
"errors"
"fmt"
"io"
"os"
"codeberg.org/gruf/go-store/kv"
"codeberg.org/gruf/go-store/storage"
"codeberg.org/gruf/go-store/util"
)
// NewTestStorage returns a new in memory storage with the default test config
func NewTestStorage() *kv.KVStore {
storage, err := kv.OpenStorage(&inMemStorage{storage: map[string][]byte{}, overwrite: false})
storage, err := kv.OpenStorage(storage.OpenMemory(200, false))
if err != nil {
panic(err)
}
@ -113,79 +109,3 @@ func StandardStorageTeardown(s *kv.KVStore) {
}
}
}
type inMemStorage struct {
storage map[string][]byte
overwrite bool
}
func (s *inMemStorage) Clean() error {
return nil
}
func (s *inMemStorage) ReadBytes(key string) ([]byte, error) {
b, ok := s.storage[key]
if !ok {
return nil, errors.New("key not found")
}
return b, nil
}
func (s *inMemStorage) ReadStream(key string) (io.ReadCloser, error) {
b, err := s.ReadBytes(key)
if err != nil {
return nil, err
}
return util.NopReadCloser(bytes.NewReader(b)), nil
}
func (s *inMemStorage) WriteBytes(key string, value []byte) error {
if _, ok := s.storage[key]; ok && !s.overwrite {
return errors.New("key already in storage")
}
s.storage[key] = copyBytes(value)
return nil
}
func (s *inMemStorage) WriteStream(key string, r io.Reader) error {
b, err := io.ReadAll(r)
if err != nil {
return err
}
return s.WriteBytes(key, b)
}
func (s *inMemStorage) Stat(key string) (bool, error) {
_, ok := s.storage[key]
return ok, nil
}
func (s *inMemStorage) Remove(key string) error {
if _, ok := s.storage[key]; !ok {
return errors.New("key not found")
}
delete(s.storage, key)
return nil
}
func (s *inMemStorage) WalkKeys(opts storage.WalkKeysOptions) error {
if opts.WalkFn == nil {
return errors.New("invalid walkfn")
}
for key := range s.storage {
opts.WalkFn(entry(key))
}
return nil
}
type entry string
func (e entry) Key() string {
return string(e)
}
func copyBytes(b []byte) []byte {
p := make([]byte, len(b))
copy(p, b)
return p
}