gotosocial/internal/media/util.go
tobi 07727753b9
[feature] Clean up/uncache remote media (#407)
* Add whereNotEmptyAndNotNull

* Add GetRemoteOlderThanDays

* Add GetRemoteOlderThanDays

* Add PruneRemote to Manager interface

* Start implementing PruneRemote

* add new attachment + status to tests

* fix up and test GetRemoteOlderThan

* fix bad import

* PruneRemote: return number pruned

* add Cached column to mediaattachment

* update + test pruneRemote

* update mediaTest

* use Cached column

* upstep bun to latest version

* embed structs in mediaAttachment

* migrate mediaAttachment to new format

* don't default cached to true

* select only remote media

* update db dependencies

* step bun back to last working version

* update pruneRemote to use Cached field

* fix storage path of test attachments

* add recache logic to manager

* fix trimmed aspect ratio

* test prune and recache

* return errwithcode

* tidy up different paths for emoji vs attachment

* fix incorrect thumbnail type being stored

* expose TransportController to media processor

* implement tee-ing recached content

* add thoughts of dog to test fedi attachments

* test get remote files

* add comment on PruneRemote

* add postData cleanup to recache

* test thumbnail fetching

* add incredible diagram

* go mod tidy

* buffer pipes for recache streaming

* test for client stops reading after 1kb

* add media-remote-cache-days to config

* add cron package

* wrap logrus so it's available to cron

* start and stop cron jobs gracefully
2022-03-07 11:08:26 +01:00

120 lines
3.5 KiB
Go

/*
GoToSocial
Copyright (C) 2021-2022 GoToSocial Authors admin@gotosocial.org
This program is free software: you can redistribute it and/or modify
it under the terms of the GNU Affero General Public License as published by
the Free Software Foundation, either version 3 of the License, or
(at your option) any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU Affero General Public License for more details.
You should have received a copy of the GNU Affero General Public License
along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
package media
import (
"errors"
"fmt"
"github.com/h2non/filetype"
"github.com/sirupsen/logrus"
)
// 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.
//
// 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)
if err != nil {
return "", err
}
if kind == filetype.Unknown {
return "", errors.New("filetype unknown")
}
return kind.MIME.Value, nil
}
// supportedImage checks mime type of an image against a slice of accepted types,
// and returns True if the mime type is accepted.
func supportedImage(mimeType string) bool {
acceptedImageTypes := []string{
mimeImageJpeg,
mimeImageGif,
mimeImagePng,
}
for _, accepted := range acceptedImageTypes {
if mimeType == accepted {
return true
}
}
return false
}
// supportedEmoji checks that the content type is image/png or image/gif -- the only types supported for emoji.
func supportedEmoji(mimeType string) bool {
acceptedEmojiTypes := []string{
mimeImageGif,
mimeImagePng,
}
for _, accepted := range acceptedEmojiTypes {
if mimeType == accepted {
return true
}
}
return false
}
// ParseMediaType converts s to a recognized MediaType, or returns an error if unrecognized
func ParseMediaType(s string) (Type, error) {
switch s {
case string(TypeAttachment):
return TypeAttachment, nil
case string(TypeHeader):
return TypeHeader, nil
case string(TypeAvatar):
return TypeAvatar, nil
case string(TypeEmoji):
return TypeEmoji, nil
}
return "", fmt.Errorf("%s not a recognized MediaType", s)
}
// ParseMediaSize converts s to a recognized MediaSize, or returns an error if unrecognized
func ParseMediaSize(s string) (Size, error) {
switch s {
case string(SizeSmall):
return SizeSmall, nil
case string(SizeOriginal):
return SizeOriginal, nil
case string(SizeStatic):
return SizeStatic, nil
}
return "", fmt.Errorf("%s not a recognized MediaSize", s)
}
// logrusWrapper is just a util for passing the logrus logger into the cron logging system.
type logrusWrapper struct {
}
// Info logs routine messages about cron's operation.
func (l *logrusWrapper) Info(msg string, keysAndValues ...interface{}) {
logrus.Info("media manager cron logger: ", msg, keysAndValues)
}
// Error logs an error condition.
func (l *logrusWrapper) Error(err error, msg string, keysAndValues ...interface{}) {
logrus.Error("media manager cron logger: ", err, msg, keysAndValues)
}