mirror of
https://github.com/superseriousbusiness/gotosocial.git
synced 2024-11-23 04:06:39 +00:00
155 lines
5.2 KiB
Go
155 lines
5.2 KiB
Go
// GoToSocial
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// Copyright (C) GoToSocial Authors admin@gotosocial.org
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// SPDX-License-Identifier: AGPL-3.0-or-later
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//
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// This program is free software: you can redistribute it and/or modify
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// it under the terms of the GNU Affero General Public License as published by
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// the Free Software Foundation, either version 3 of the License, or
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// (at your option) any later version.
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//
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// This program is distributed in the hope that it will be useful,
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// but WITHOUT ANY WARRANTY; without even the implied warranty of
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// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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// GNU Affero General Public License for more details.
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//
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// You should have received a copy of the GNU Affero General Public License
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// along with this program. If not, see <http://www.gnu.org/licenses/>.
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package media
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import (
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"context"
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"errors"
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"fmt"
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"io"
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"net/url"
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"github.com/superseriousbusiness/gotosocial/internal/db"
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"github.com/superseriousbusiness/gotosocial/internal/gtsmodel"
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"github.com/superseriousbusiness/gotosocial/internal/log"
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"github.com/superseriousbusiness/gotosocial/internal/util"
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)
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type DereferenceMedia func(ctx context.Context, iri *url.URL) (io.ReadCloser, int64, error)
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// RefetchEmojis iterates through remote emojis (for the given domain, or all if domain is empty string).
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//
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// For each emoji, the manager will check whether both the full size and static images are present in storage.
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// If not, the manager will refetch and reprocess full size and static images for the emoji.
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//
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// The provided DereferenceMedia function will be used when it's necessary to refetch something this way.
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func (m *Manager) RefetchEmojis(ctx context.Context, domain string, dereferenceMedia DereferenceMedia) (int, error) {
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// normalize domain
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if domain == "" {
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domain = db.EmojiAllDomains
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}
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var (
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maxShortcodeDomain string
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refetchIDs []string
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)
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// page through emojis 20 at a time, looking for those with missing images
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for {
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// Fetch next block of emojis from database
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emojis, err := m.state.DB.GetEmojisBy(ctx, domain, false, true, "", maxShortcodeDomain, "", 20)
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if err != nil {
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if !errors.Is(err, db.ErrNoEntries) {
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// an actual error has occurred
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log.Errorf(ctx, "error fetching emojis from database: %s", err)
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}
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break
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}
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for _, emoji := range emojis {
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if emoji.Domain == "" {
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// never try to refetch local emojis
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continue
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}
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if refetch, err := m.emojiRequiresRefetch(ctx, emoji); err != nil {
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// an error here indicates something is wrong with storage, so we should stop
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return 0, fmt.Errorf("error checking refetch requirement for emoji %s: %w", util.ShortcodeDomain(emoji), err)
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} else if !refetch {
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continue
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}
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refetchIDs = append(refetchIDs, emoji.ID)
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}
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// Update next maxShortcodeDomain from last emoji
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maxShortcodeDomain = util.ShortcodeDomain(emojis[len(emojis)-1])
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}
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// bail early if we've got nothing to do
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toRefetchCount := len(refetchIDs)
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if toRefetchCount == 0 {
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log.Debug(ctx, "no remote emojis require a refetch")
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return 0, nil
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}
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log.Debugf(ctx, "%d remote emoji(s) require a refetch, doing that now...", toRefetchCount)
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var totalRefetched int
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for _, emojiID := range refetchIDs {
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emoji, err := m.state.DB.GetEmojiByID(ctx, emojiID)
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if err != nil {
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// this shouldn't happen--since we know we have the emoji--so return if it does
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return 0, fmt.Errorf("error getting emoji %s: %w", emojiID, err)
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}
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shortcodeDomain := util.ShortcodeDomain(emoji)
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if emoji.ImageRemoteURL == "" {
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log.Errorf(ctx, "remote emoji %s could not be refreshed because it has no ImageRemoteURL set", shortcodeDomain)
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continue
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}
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emojiImageIRI, err := url.Parse(emoji.ImageRemoteURL)
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if err != nil {
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log.Errorf(ctx, "remote emoji %s could not be refreshed because its ImageRemoteURL (%s) is not a valid uri: %s", shortcodeDomain, emoji.ImageRemoteURL, err)
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continue
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}
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dataFunc := func(ctx context.Context) (reader io.ReadCloser, fileSize int64, err error) {
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return dereferenceMedia(ctx, emojiImageIRI)
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}
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processingEmoji, err := m.PreProcessEmoji(ctx, dataFunc, emoji.Shortcode, emoji.ID, emoji.URI, &AdditionalEmojiInfo{
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Domain: &emoji.Domain,
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ImageRemoteURL: &emoji.ImageRemoteURL,
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ImageStaticRemoteURL: &emoji.ImageStaticRemoteURL,
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Disabled: emoji.Disabled,
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VisibleInPicker: emoji.VisibleInPicker,
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}, true)
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if err != nil {
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log.Errorf(ctx, "emoji %s could not be refreshed because of an error during processing: %s", shortcodeDomain, err)
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continue
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}
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if _, err := processingEmoji.LoadEmoji(ctx); err != nil {
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log.Errorf(ctx, "emoji %s could not be refreshed because of an error during loading: %s", shortcodeDomain, err)
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continue
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}
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log.Tracef(ctx, "refetched emoji %s successfully from remote", shortcodeDomain)
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totalRefetched++
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}
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return totalRefetched, nil
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}
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func (m *Manager) emojiRequiresRefetch(ctx context.Context, emoji *gtsmodel.Emoji) (bool, error) {
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if has, err := m.state.Storage.Has(ctx, emoji.ImagePath); err != nil {
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return false, err
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} else if !has {
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return true, nil
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}
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if has, err := m.state.Storage.Has(ctx, emoji.ImageStaticPath); err != nil {
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return false, err
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} else if !has {
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return true, nil
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}
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return false, nil
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}
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