You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
68 lines
1.4 KiB
68 lines
1.4 KiB
// Copyright 2020 The Gitea Authors. All rights reserved.
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// Use of this source code is governed by a MIT-style
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// license that can be found in the LICENSE file.
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package migrations
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import (
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"xorm.io/xorm"
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)
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func fixRepoTopics(x *xorm.Engine) error {
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type Topic struct {
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ID int64 `xorm:"pk autoincr"`
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Name string `xorm:"UNIQUE VARCHAR(25)"`
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RepoCount int
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}
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type RepoTopic struct {
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RepoID int64 `xorm:"pk"`
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TopicID int64 `xorm:"pk"`
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}
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type Repository struct {
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ID int64 `xorm:"pk autoincr"`
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Topics []string `xorm:"TEXT JSON"`
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}
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const batchSize = 100
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sess := x.NewSession()
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defer sess.Close()
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repos := make([]*Repository, 0, batchSize)
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topics := make([]string, 0, batchSize)
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for start := 0; ; start += batchSize {
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repos = repos[:0]
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if err := sess.Begin(); err != nil {
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return err
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}
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if err := sess.Limit(batchSize, start).Find(&repos); err != nil {
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return err
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}
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if len(repos) == 0 {
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break
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}
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for _, repo := range repos {
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topics = topics[:0]
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if err := sess.Select("name").Table("topic").
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Join("INNER", "repo_topic", "repo_topic.topic_id = topic.id").
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Where("repo_topic.repo_id = ?", repo.ID).Desc("topic.repo_count").Find(&topics); err != nil {
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return err
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}
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repo.Topics = topics
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if _, err := sess.ID(repo.ID).Cols("topics").Update(repo); err != nil {
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return err
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}
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}
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if err := sess.Commit(); 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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