jojo/models/forgejo_migrations/index_utils_test.go

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fix: realign indexes on the 'action' table (#10040) Fixes #9963. This realigns all the indexes on the `action` table to best match their intended usages. New: - `IDX_action_created_unix (created_unix)` - Intended for usage in `DeleteOldActions`. - `IDX_action_repo_id_created_unix (repo_id, created_unix)` - Intended for usage when fetching action feeds for a repo and a team, with the same logic as that described below in `IDX_action_user_id_created_unix`. - `IDX_action_repo_id_op_type (repo_id, op_type)` - Intended for `DeleteIssueActions` when it searches for CreateIssue & CreatePullRequest actions for cleanup. Could be optimized further with a denormalization of the issue identifier into a field, but there's no current evidence that this is required. Replaced: - `IDX_action_c_u (created_unix, user_id)` - Replaced with `IDX_action_user_id_created_unix (user_id, created_unix)`. When action feeds are created w/ `ORDER BY created_unix DESC LIMIT 20`, an index beginning with `created_unix` will have to index scan until it can satisfy 20 records; the `user_id` portion of the index is effectively useless until two records appear at the same time. By inverting the order, the database will be able to identify the records created by a user and then pop the most recent 20 from the index order. - At the scale of database I have access to, the performance difference is unmeasurable. This change is supported by theoretical grounds and the findings of #9963, but no experimental evidence. Removed: - `IDX_action_user_id (user_id)` - Redundant with the new `IDX_action_user_id_created_unix`. - `IDX_action_r_u (repo_id, user_id)` - No clear consumer for this index. Retained with no modification: - `IDX_action_comment_id (comment_id)` - Used in `DeleteIssueActions`. - `IDX_action_au_r_c_u (act_user_id, repo_id, created_unix, user_id)` - Heat map generation. ## Checklist The [contributor guide](https://forgejo.org/docs/next/contributor/) contains information that will be helpful to first time contributors. There also are a few [conditions for merging Pull Requests in Forgejo repositories](https://codeberg.org/forgejo/governance/src/branch/main/PullRequestsAgreement.md). You are also welcome to join the [Forgejo development chatroom](https://matrix.to/#/#forgejo-development:matrix.org). ### Tests - I added test coverage for Go changes... - [ ] in their respective `*_test.go` for unit tests. - [ ] in the `tests/integration` directory if it involves interactions with a live Forgejo server. - I added test coverage for JavaScript changes... - [ ] in `web_src/js/*.test.js` if it can be unit tested. - [ ] in `tests/e2e/*.test.e2e.js` if it requires interactions with a live Forgejo server (see also the [developer guide for JavaScript testing](https://codeberg.org/forgejo/forgejo/src/branch/forgejo/tests/e2e/README.md#end-to-end-tests)). ### Documentation - [ ] I created a pull request [to the documentation](https://codeberg.org/forgejo/docs) to explain to Forgejo users how to use this change. - [x] I did not document these changes and I do not expect someone else to do it. ### Release notes - [ ] I do not want this change to show in the release notes. - [x] I want the title to show in the release notes with a link to this pull request. - [ ] I want the content of the `release-notes/<pull request number>.md` to be be used for the release notes instead of the title. Reviewed-on: https://codeberg.org/forgejo/forgejo/pulls/10040 Reviewed-by: Gusted <gusted@noreply.codeberg.org> Co-authored-by: Mathieu Fenniak <mathieu@fenniak.net> Co-committed-by: Mathieu Fenniak <mathieu@fenniak.net>
2025-11-18 18:34:25 +01:00
// Copyright 2025 The Forgejo Authors. All rights reserved.
// SPDX-License-Identifier: GPL-3.0-or-later
package forgejo_migrations
import (
"testing"
migration_tests "forgejo.org/models/gitea_migrations/test"
"github.com/stretchr/testify/assert"
"github.com/stretchr/testify/require"
)
func TestDropIndexIfExists(t *testing.T) {
type Table struct {
ID int64 `xorm:"pk"`
DoerID int64 `xorm:"INDEX INDEX(s)"`
OwnerID int64 `xorm:"INDEX"`
RepoID int64 `xorm:"INDEX(s)"`
}
x, deferable := migration_tests.PrepareTestEnv(t, 0, new(Table))
defer deferable()
if x == nil || t.Failed() {
return
}
exists, err := indexExists(x, "table", "IDX_table_doer_id")
require.NoError(t, err)
assert.True(t, exists)
exists, err = indexExists(x, "table", "IDX_table_owner_id")
require.NoError(t, err)
assert.True(t, exists)
exists, err = indexExists(x, "table", "IDX_table_repo_id")
require.NoError(t, err)
assert.False(t, exists)
exists, err = indexExists(x, "table", "IDX_table_s")
require.NoError(t, err)
assert.True(t, exists)
require.NoError(t, dropIndexIfExists(x, "table", "IDX_table_repo_id"))
require.NoError(t, dropIndexIfExists(x, "table", "IDX_table_doer_id"))
exists, err = indexExists(x, "table", "IDX_table_doer_id")
require.NoError(t, err)
assert.False(t, exists)
require.NoError(t, dropIndexIfExists(x, "table", "IDX_table_s"))
exists, err = indexExists(x, "table", "IDX_table_s")
require.NoError(t, err)
assert.False(t, exists)
require.NoError(t, dropIndexIfExists(x, "table", "IDX_table_owner_id"))
exists, err = indexExists(x, "table", "IDX_table_owner_id")
require.NoError(t, err)
assert.False(t, exists)
}