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[performance/postgres] Rename constraints, remove duplicate indexes (#2392)
* [performance/postgres] Rename constraints, remove duplicate indexes * remove duplicate indexes from sqlite as well
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tobi
GitHub
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1 changed files with 210 additions and 0 deletions
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// 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 migrations
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import (
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"context"
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"strings"
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"github.com/superseriousbusiness/gotosocial/internal/log"
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"github.com/uptrace/bun"
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"github.com/uptrace/bun/dialect"
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)
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func init() {
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up := func(ctx context.Context, db *bun.DB) error {
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return db.RunInTx(ctx, nil, func(ctx context.Context, tx bun.Tx) error {
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type spec struct {
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old string
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new string
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table string
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columns []string
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}
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if db.Dialect().Name() == dialect.PG {
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log.Info(ctx, "renaming misnamed postgres constraints; this may take some time, please be patient and don't interrupt this!")
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// Some constraints got kept around
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// in weird versions due to migration
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// issues; rename these for consistency
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// (this will also drop and recreate
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// indexes supporting the constraints).
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for _, spec := range []spec{
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{
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old: "new_accounts_pkey",
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new: "accounts_pkey",
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table: "public.accounts",
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columns: []string{"id"},
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},
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{
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old: "new_accounts_uri_key",
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new: "accounts_uri_key",
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table: "public.accounts",
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columns: []string{"uri"},
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},
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{
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old: "new_accounts_url_key",
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new: "accounts_url_key",
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table: "public.accounts",
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columns: []string{"url"},
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},
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{
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old: "new_accounts_inbox_uri_key",
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new: "accounts_inbox_uri_key",
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table: "public.accounts",
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columns: []string{"inbox_uri"},
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},
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{
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old: "new_accounts_outbox_uri_key",
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new: "accounts_outbox_uri_key",
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table: "public.accounts",
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columns: []string{"outbox_uri"},
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},
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{
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old: "new_accounts_following_uri_key",
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new: "accounts_following_uri_key",
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table: "public.accounts",
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columns: []string{"following_uri"},
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},
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{
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old: "new_accounts_followers_uri_key",
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new: "accounts_followers_uri_key",
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table: "public.accounts",
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columns: []string{"followers_uri"},
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},
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{
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old: "new_accounts_featured_collection_uri_key",
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new: "accounts_featured_collection_uri_key",
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table: "public.accounts",
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columns: []string{"featured_collection_uri"},
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},
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{
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old: "new_accounts_public_key_uri_key",
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new: "accounts_public_key_uri_key",
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table: "public.accounts",
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columns: []string{"public_key_uri"},
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},
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{
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old: "new_emojis_pkey1",
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new: "emojis_pkey",
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table: "public.emojis",
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columns: []string{"id"},
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},
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{
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old: "new_emojis_uri_key1",
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new: "emojis_uri_key",
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table: "public.emojis",
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columns: []string{"uri"},
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},
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{
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old: "new_status_faves_pkey",
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new: "status_faves_pkey",
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table: "public.status_faves",
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columns: []string{"id"},
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},
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{
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old: "new_status_faves_uri_key",
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new: "status_faves_uri_key",
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table: "public.status_faves",
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columns: []string{"uri"},
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},
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} {
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if _, err := tx.ExecContext(
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ctx,
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"ALTER TABLE ? DROP CONSTRAINT IF EXISTS ?",
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bun.Ident(spec.table),
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bun.Safe(spec.old),
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); err != nil {
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return err
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}
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if _, err := tx.ExecContext(
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ctx,
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"ALTER TABLE ? ADD CONSTRAINT ? UNIQUE(?)",
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bun.Ident(spec.table),
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bun.Safe(spec.new),
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bun.Safe(strings.Join(spec.columns, ",")),
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); err != nil {
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return err
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}
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}
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}
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log.Info(ctx, "removing duplicate indexes; this may take some time, please be patient and don't interrupt this!")
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// Remove all indexes which duplicate
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// or are covered by other indexes,
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// including unique constraint indexes
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// created automatically by the db.
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for _, index := range []string{
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"account_notes_account_id_target_account_id_idx",
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"accounts_username_domain_idx",
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"accounts_id_idx",
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"accounts_inbox_uri_idx",
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"accounts_outbox_uri_idx",
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"accounts_domain_idx",
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"accounts_uri_idx",
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"accounts_url_idx",
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"accounts_followers_uri_idx",
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"accounts_following_uri_idx",
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"accounts_public_key_uri_idx",
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"account_actions_id_idx",
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"blocks_account_id_target_account_id_idx",
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"emojis_id_idx",
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"emojis_uri_idx",
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"instances_domain_idx",
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"list_entries_id_idx",
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"list_entries_list_id_idx",
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"lists_id_idx",
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"markers_account_id_name_idx",
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"media_attachments_id_idx",
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"status_faves_id_idx",
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"status_faves_account_id_idx",
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"status_to_tags_tag_id_idx",
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"statuses_uri_idx",
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"statuses_account_id_idx", // <- seems counterintuitive, but other indexes include "account_id" as first column
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"tags_name_idx",
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"thread_mutes_id_idx",
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"thread_mutes_thread_id_account_id_idx",
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"threads_id_idx",
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"tombstone_uri_idx",
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"tombstone_uri_idx",
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} {
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if _, err := tx.
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NewDropIndex().
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Index(index).
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IfExists().
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Exec(ctx); 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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}
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down := func(ctx context.Context, db *bun.DB) error {
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return db.RunInTx(ctx, nil, func(ctx context.Context, tx bun.Tx) error {
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return nil
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})
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}
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if err := Migrations.Register(up, down); err != nil {
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panic(err)
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}
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}
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