mirror of
https://github.com/superseriousbusiness/gotosocial.git
synced 2024-12-18 21:26:28 +00:00
7ec1e1332e
* rewrite cache library as codeberg.org/gruf/go-structr, implement in gotosocial
* use actual go-structr release version (not just commit hash)
* revert go toolchain changes (damn you go for auto changing this)
* fix go mod woes
* ensure %w is used in calls to errs.Appendf()
* fix error checking
* fix possible panic
* remove unnecessary start/stop functions, move to main Cache{} struct, add note regarding which caches require start/stop
* fix copy-paste artifact... 😇
* fix all comment copy-paste artifacts
* remove dropID() function, now we can just use slices.DeleteFunc()
* use util.Deduplicate() instead of collate(), move collate to util
* move orderByIDs() to util package and "generify"
* add a util.DeleteIf() function, use this to delete entries on failed population
* use slices.DeleteFunc() instead of util.DeleteIf() (i had the logic mixed up in my head somehow lol)
* add note about how collate differs from deduplicate
391 lines
10 KiB
Go
391 lines
10 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 bundb
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import (
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"context"
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"errors"
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"fmt"
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"slices"
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"time"
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"github.com/superseriousbusiness/gotosocial/internal/db"
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"github.com/superseriousbusiness/gotosocial/internal/gtscontext"
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"github.com/superseriousbusiness/gotosocial/internal/gtserror"
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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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"github.com/uptrace/bun"
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)
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func (r *relationshipDB) GetFollowByID(ctx context.Context, id string) (*gtsmodel.Follow, error) {
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return r.getFollow(
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ctx,
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"ID",
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func(follow *gtsmodel.Follow) error {
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return r.db.NewSelect().
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Model(follow).
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Where("? = ?", bun.Ident("id"), id).
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Scan(ctx)
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},
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id,
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)
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}
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func (r *relationshipDB) GetFollowByURI(ctx context.Context, uri string) (*gtsmodel.Follow, error) {
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return r.getFollow(
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ctx,
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"URI",
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func(follow *gtsmodel.Follow) error {
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return r.db.NewSelect().
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Model(follow).
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Where("? = ?", bun.Ident("uri"), uri).
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Scan(ctx)
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},
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uri,
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)
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}
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func (r *relationshipDB) GetFollow(ctx context.Context, sourceAccountID string, targetAccountID string) (*gtsmodel.Follow, error) {
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return r.getFollow(
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ctx,
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"AccountID,TargetAccountID",
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func(follow *gtsmodel.Follow) error {
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return r.db.NewSelect().
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Model(follow).
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Where("? = ?", bun.Ident("account_id"), sourceAccountID).
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Where("? = ?", bun.Ident("target_account_id"), targetAccountID).
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Scan(ctx)
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},
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sourceAccountID,
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targetAccountID,
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)
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}
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func (r *relationshipDB) GetFollowsByIDs(ctx context.Context, ids []string) ([]*gtsmodel.Follow, error) {
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// Preallocate at-worst possible length.
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uncached := make([]string, 0, len(ids))
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// Load all follow IDs via cache loader callbacks.
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follows, err := r.state.Caches.GTS.Follow.Load("ID",
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// Load cached + check for uncached.
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func(load func(keyParts ...any) bool) {
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for _, id := range ids {
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if !load(id) {
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uncached = append(uncached, id)
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}
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}
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},
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// Uncached follow loader function.
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func() ([]*gtsmodel.Follow, error) {
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// Preallocate expected length of uncached follows.
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follows := make([]*gtsmodel.Follow, 0, len(uncached))
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// Perform database query scanning
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// the remaining (uncached) IDs.
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if err := r.db.NewSelect().
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Model(&follows).
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Where("? IN (?)", bun.Ident("id"), bun.In(uncached)).
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Scan(ctx); err != nil {
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return nil, err
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}
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return follows, nil
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},
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)
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if err != nil {
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return nil, err
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}
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// Reorder the follows by their
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// IDs to ensure in correct order.
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getID := func(f *gtsmodel.Follow) string { return f.ID }
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util.OrderBy(follows, ids, getID)
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if gtscontext.Barebones(ctx) {
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// no need to fully populate.
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return follows, nil
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}
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// Populate all loaded follows, removing those we fail to
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// populate (removes needing so many nil checks everywhere).
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follows = slices.DeleteFunc(follows, func(follow *gtsmodel.Follow) bool {
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if err := r.PopulateFollow(ctx, follow); err != nil {
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log.Errorf(ctx, "error populating follow %s: %v", follow.ID, err)
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return true
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}
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return false
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})
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return follows, nil
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}
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func (r *relationshipDB) IsFollowing(ctx context.Context, sourceAccountID string, targetAccountID string) (bool, error) {
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follow, err := r.GetFollow(
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gtscontext.SetBarebones(ctx),
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sourceAccountID,
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targetAccountID,
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)
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if err != nil && !errors.Is(err, db.ErrNoEntries) {
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return false, err
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}
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return (follow != nil), nil
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}
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func (r *relationshipDB) IsMutualFollowing(ctx context.Context, accountID1 string, accountID2 string) (bool, error) {
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// make sure account 1 follows account 2
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f1, err := r.IsFollowing(ctx,
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accountID1,
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accountID2,
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)
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if !f1 /* f1 = false when err != nil */ {
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return false, err
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}
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// make sure account 2 follows account 1
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f2, err := r.IsFollowing(ctx,
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accountID2,
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accountID1,
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)
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if !f2 /* f2 = false when err != nil */ {
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return false, err
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}
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return true, nil
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}
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func (r *relationshipDB) getFollow(ctx context.Context, lookup string, dbQuery func(*gtsmodel.Follow) error, keyParts ...any) (*gtsmodel.Follow, error) {
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// Fetch follow from database cache with loader callback
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follow, err := r.state.Caches.GTS.Follow.LoadOne(lookup, func() (*gtsmodel.Follow, error) {
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var follow gtsmodel.Follow
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// Not cached! Perform database query
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if err := dbQuery(&follow); err != nil {
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return nil, err
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}
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return &follow, nil
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}, keyParts...)
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if err != nil {
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// error already processed
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return nil, err
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}
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if gtscontext.Barebones(ctx) {
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// Only a barebones model was requested.
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return follow, nil
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}
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if err := r.state.DB.PopulateFollow(ctx, follow); err != nil {
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return nil, err
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}
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return follow, nil
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}
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func (r *relationshipDB) PopulateFollow(ctx context.Context, follow *gtsmodel.Follow) error {
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var (
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err error
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errs = gtserror.NewMultiError(2)
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)
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if follow.Account == nil {
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// Follow account is not set, fetch from the database.
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follow.Account, err = r.state.DB.GetAccountByID(
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gtscontext.SetBarebones(ctx),
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follow.AccountID,
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)
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if err != nil {
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errs.Appendf("error populating follow account: %w", err)
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}
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}
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if follow.TargetAccount == nil {
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// Follow target account is not set, fetch from the database.
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follow.TargetAccount, err = r.state.DB.GetAccountByID(
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gtscontext.SetBarebones(ctx),
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follow.TargetAccountID,
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)
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if err != nil {
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errs.Appendf("error populating follow target account: %w", err)
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}
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}
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return errs.Combine()
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}
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func (r *relationshipDB) PutFollow(ctx context.Context, follow *gtsmodel.Follow) error {
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return r.state.Caches.GTS.Follow.Store(follow, func() error {
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_, err := r.db.NewInsert().Model(follow).Exec(ctx)
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return err
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})
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}
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func (r *relationshipDB) UpdateFollow(ctx context.Context, follow *gtsmodel.Follow, columns ...string) error {
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follow.UpdatedAt = time.Now()
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if len(columns) > 0 {
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// If we're updating by column, ensure "updated_at" is included.
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columns = append(columns, "updated_at")
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}
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return r.state.Caches.GTS.Follow.Store(follow, func() error {
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if _, err := r.db.NewUpdate().
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Model(follow).
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Where("? = ?", bun.Ident("follow.id"), follow.ID).
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Column(columns...).
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Exec(ctx); err != nil {
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return err
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}
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return nil
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})
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}
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func (r *relationshipDB) deleteFollow(ctx context.Context, id string) error {
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// Delete the follow itself using the given ID.
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if _, err := r.db.NewDelete().
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Table("follows").
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Where("? = ?", bun.Ident("id"), id).
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Exec(ctx); err != nil {
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return err
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}
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// Delete every list entry that used this followID.
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if err := r.state.DB.DeleteListEntriesForFollowID(ctx, id); err != nil {
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return fmt.Errorf("deleteFollow: error deleting list entries: %w", err)
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}
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return nil
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}
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func (r *relationshipDB) DeleteFollow(ctx context.Context, sourceAccountID string, targetAccountID string) error {
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// Load follow into cache before attempting a delete,
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// as we need it cached in order to trigger the invalidate
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// callback. This in turn invalidates others.
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follow, err := r.GetFollow(
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gtscontext.SetBarebones(ctx),
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sourceAccountID,
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targetAccountID,
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)
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if err != nil {
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if errors.Is(err, db.ErrNoEntries) {
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// Already gone.
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return nil
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}
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return err
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}
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// Drop this now-cached follow on return after delete.
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defer r.state.Caches.GTS.Follow.Invalidate("AccountID,TargetAccountID", sourceAccountID, targetAccountID)
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// Finally delete follow from DB.
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return r.deleteFollow(ctx, follow.ID)
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}
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func (r *relationshipDB) DeleteFollowByID(ctx context.Context, id string) error {
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// Load follow into cache before attempting a delete,
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// as we need it cached in order to trigger the invalidate
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// callback. This in turn invalidates others.
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follow, err := r.GetFollowByID(gtscontext.SetBarebones(ctx), id)
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if err != nil {
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if errors.Is(err, db.ErrNoEntries) {
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// Already gone.
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return nil
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}
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return err
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}
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// Drop this now-cached follow on return after delete.
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defer r.state.Caches.GTS.Follow.Invalidate("ID", id)
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// Finally delete follow from DB.
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return r.deleteFollow(ctx, follow.ID)
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}
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func (r *relationshipDB) DeleteFollowByURI(ctx context.Context, uri string) error {
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// Load follow into cache before attempting a delete,
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// as we need it cached in order to trigger the invalidate
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// callback. This in turn invalidates others.
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follow, err := r.GetFollowByURI(gtscontext.SetBarebones(ctx), uri)
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if err != nil {
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if errors.Is(err, db.ErrNoEntries) {
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// Already gone.
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return nil
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}
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return err
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}
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// Drop this now-cached follow on return after delete.
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defer r.state.Caches.GTS.Follow.Invalidate("URI", uri)
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// Finally delete follow from DB.
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return r.deleteFollow(ctx, follow.ID)
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}
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func (r *relationshipDB) DeleteAccountFollows(ctx context.Context, accountID string) error {
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var followIDs []string
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// Get full list of IDs.
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if _, err := r.db.
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NewSelect().
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Column("id").
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Table("follows").
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WhereOr("? = ? OR ? = ?",
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bun.Ident("account_id"),
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accountID,
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bun.Ident("target_account_id"),
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accountID,
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).
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Exec(ctx, &followIDs); err != nil {
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return err
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}
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defer func() {
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// Invalidate all account's incoming / outoing follows on return.
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r.state.Caches.GTS.Follow.Invalidate("AccountID", accountID)
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r.state.Caches.GTS.Follow.Invalidate("TargetAccountID", accountID)
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}()
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// Load all follows into cache, this *really* isn't great
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// but it is the only way we can ensure we invalidate all
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// related caches correctly (e.g. visibility).
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_, err := r.GetAccountFollows(ctx, accountID, nil)
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if err != nil && !errors.Is(err, db.ErrNoEntries) {
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return err
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}
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// Delete all follows from DB.
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_, err = r.db.NewDelete().
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Table("follows").
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Where("? IN (?)", bun.Ident("id"), bun.In(followIDs)).
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Exec(ctx)
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if err != nil {
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return err
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}
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for _, id := range followIDs {
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// Finally, delete all list entries associated with each follow ID.
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if err := r.state.DB.DeleteListEntriesForFollowID(ctx, id); err != nil {
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return err
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}
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}
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return nil
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}
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