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Move from max( id ) to max( index ) for latest commit statuses (#30076)
This PR replaces the use of `max( id )`, and instead using ``max( `index` )`` for determining the latest commit status. Building business logic over an `auto_increment` primary key like `id` is risky and there’re already plenty of discussions on the Internet. There‘s no guarantee for `auto_increment` values to be monotonic, especially upon failures or with a cluster. In the specific case, we met the problem of commit statuses being outdated when using TiDB as the database. As [being documented](https://docs.pingcap.com/tidb/stable/auto-increment), `auto_increment` values assigned to an `insert` statement will only be monotonic on a per server (node) basis. Closes #30074. (cherry picked from commit 7443a10fc3d722d3326a0cb7b15b208f907c72d7)
This commit is contained in:
YR Chen
Earl Warren
parent
06645e7d46
commit
2813425488
1 changed files with 73 additions and 47 deletions
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@ -25,6 +25,7 @@ import (
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"code.gitea.io/gitea/modules/translation"
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"xorm.io/builder"
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"xorm.io/xorm"
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)
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// CommitStatus holds a single Status of a single Commit
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@ -264,44 +265,48 @@ type CommitStatusIndex struct {
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// GetLatestCommitStatus returns all statuses with a unique context for a given commit.
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func GetLatestCommitStatus(ctx context.Context, repoID int64, sha string, listOptions db.ListOptions) ([]*CommitStatus, int64, error) {
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ids := make([]int64, 0, 10)
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sess := db.GetEngine(ctx).Table(&CommitStatus{}).
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Where("repo_id = ?", repoID).And("sha = ?", sha).
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Select("max( id ) as id").
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GroupBy("context_hash").OrderBy("max( id ) desc")
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getBase := func() *xorm.Session {
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return db.GetEngine(ctx).Table(&CommitStatus{}).
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Where("repo_id = ?", repoID).And("sha = ?", sha)
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}
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indices := make([]int64, 0, 10)
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sess := getBase().Select("max( `index` ) as `index`").
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GroupBy("context_hash").OrderBy("max( `index` ) desc")
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if !listOptions.IsListAll() {
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sess = db.SetSessionPagination(sess, &listOptions)
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}
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count, err := sess.FindAndCount(&ids)
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count, err := sess.FindAndCount(&indices)
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if err != nil {
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return nil, count, err
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}
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statuses := make([]*CommitStatus, 0, len(ids))
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if len(ids) == 0 {
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statuses := make([]*CommitStatus, 0, len(indices))
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if len(indices) == 0 {
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return statuses, count, nil
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}
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return statuses, count, db.GetEngine(ctx).In("id", ids).Find(&statuses)
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return statuses, count, getBase().And(builder.In("`index`", indices)).Find(&statuses)
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}
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// GetLatestCommitStatusForPairs returns all statuses with a unique context for a given list of repo-sha pairs
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func GetLatestCommitStatusForPairs(ctx context.Context, repoIDsToLatestCommitSHAs map[int64]string, listOptions db.ListOptions) (map[int64][]*CommitStatus, error) {
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type result struct {
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ID int64
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Index int64
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RepoID int64
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}
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results := make([]result, 0, len(repoIDsToLatestCommitSHAs))
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sess := db.GetEngine(ctx).Table(&CommitStatus{})
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getBase := func() *xorm.Session {
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return db.GetEngine(ctx).Table(&CommitStatus{})
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}
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// Create a disjunction of conditions for each repoID and SHA pair
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conds := make([]builder.Cond, 0, len(repoIDsToLatestCommitSHAs))
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for repoID, sha := range repoIDsToLatestCommitSHAs {
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conds = append(conds, builder.Eq{"repo_id": repoID, "sha": sha})
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}
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sess = sess.Where(builder.Or(conds...)).
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Select("max( id ) as id, repo_id").
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GroupBy("context_hash, repo_id").OrderBy("max( id ) desc")
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sess := getBase().Where(builder.Or(conds...)).
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Select("max( `index` ) as `index`, repo_id").
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GroupBy("context_hash, repo_id").OrderBy("max( `index` ) desc")
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if !listOptions.IsListAll() {
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sess = db.SetSessionPagination(sess, &listOptions)
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@ -312,15 +317,21 @@ func GetLatestCommitStatusForPairs(ctx context.Context, repoIDsToLatestCommitSHA
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return nil, err
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}
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ids := make([]int64, 0, len(results))
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repoStatuses := make(map[int64][]*CommitStatus)
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for _, result := range results {
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ids = append(ids, result.ID)
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}
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statuses := make([]*CommitStatus, 0, len(ids))
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if len(ids) > 0 {
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err = db.GetEngine(ctx).In("id", ids).Find(&statuses)
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if len(results) > 0 {
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statuses := make([]*CommitStatus, 0, len(results))
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conds = make([]builder.Cond, 0, len(results))
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for _, result := range results {
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cond := builder.Eq{
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"`index`": result.Index,
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"repo_id": result.RepoID,
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"sha": repoIDsToLatestCommitSHAs[result.RepoID],
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}
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conds = append(conds, cond)
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}
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err = getBase().Where(builder.Or(conds...)).Find(&statuses)
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if err != nil {
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return nil, err
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}
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@ -337,42 +348,43 @@ func GetLatestCommitStatusForPairs(ctx context.Context, repoIDsToLatestCommitSHA
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// GetLatestCommitStatusForRepoCommitIDs returns all statuses with a unique context for a given list of repo-sha pairs
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func GetLatestCommitStatusForRepoCommitIDs(ctx context.Context, repoID int64, commitIDs []string) (map[string][]*CommitStatus, error) {
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type result struct {
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ID int64
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Sha string
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Index int64
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SHA string
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}
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getBase := func() *xorm.Session {
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return db.GetEngine(ctx).Table(&CommitStatus{}).Where("repo_id = ?", repoID)
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}
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results := make([]result, 0, len(commitIDs))
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sess := db.GetEngine(ctx).Table(&CommitStatus{})
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// Create a disjunction of conditions for each repoID and SHA pair
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conds := make([]builder.Cond, 0, len(commitIDs))
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for _, sha := range commitIDs {
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conds = append(conds, builder.Eq{"sha": sha})
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}
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sess = sess.Where(builder.Eq{"repo_id": repoID}.And(builder.Or(conds...))).
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Select("max( id ) as id, sha").
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GroupBy("context_hash, sha").OrderBy("max( id ) desc")
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sess := getBase().And(builder.Or(conds...)).
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Select("max( `index` ) as `index`, sha").
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GroupBy("context_hash, sha").OrderBy("max( `index` ) desc")
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err := sess.Find(&results)
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if err != nil {
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return nil, err
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}
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ids := make([]int64, 0, len(results))
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repoStatuses := make(map[string][]*CommitStatus)
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for _, result := range results {
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ids = append(ids, result.ID)
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}
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statuses := make([]*CommitStatus, 0, len(ids))
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if len(ids) > 0 {
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err = db.GetEngine(ctx).In("id", ids).Find(&statuses)
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if len(results) > 0 {
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statuses := make([]*CommitStatus, 0, len(results))
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conds = make([]builder.Cond, 0, len(results))
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for _, result := range results {
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conds = append(conds, builder.Eq{"`index`": result.Index, "sha": result.SHA})
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}
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err = getBase().And(builder.Or(conds...)).Find(&statuses)
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if err != nil {
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return nil, err
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}
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// Group the statuses by repo ID
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// Group the statuses by commit
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for _, status := range statuses {
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repoStatuses[status.SHA] = append(repoStatuses[status.SHA], status)
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}
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@ -383,22 +395,36 @@ func GetLatestCommitStatusForRepoCommitIDs(ctx context.Context, repoID int64, co
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// FindRepoRecentCommitStatusContexts returns repository's recent commit status contexts
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func FindRepoRecentCommitStatusContexts(ctx context.Context, repoID int64, before time.Duration) ([]string, error) {
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type result struct {
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Index int64
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SHA string
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}
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getBase := func() *xorm.Session {
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return db.GetEngine(ctx).Table(&CommitStatus{}).Where("repo_id = ?", repoID)
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}
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start := timeutil.TimeStampNow().AddDuration(-before)
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ids := make([]int64, 0, 10)
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if err := db.GetEngine(ctx).Table("commit_status").
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Where("repo_id = ?", repoID).
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And("updated_unix >= ?", start).
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Select("max( id ) as id").
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GroupBy("context_hash").OrderBy("max( id ) desc").
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Find(&ids); err != nil {
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results := make([]result, 0, 10)
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sess := getBase().And("updated_unix >= ?", start).
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Select("max( `index` ) as `index`, sha").
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GroupBy("context_hash, sha").OrderBy("max( `index` ) desc")
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err := sess.Find(&results)
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if err != nil {
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return nil, err
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}
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contexts := make([]string, 0, len(ids))
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if len(ids) == 0 {
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contexts := make([]string, 0, len(results))
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if len(results) == 0 {
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return contexts, nil
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}
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return contexts, db.GetEngine(ctx).Select("context").Table("commit_status").In("id", ids).Find(&contexts)
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conds := make([]builder.Cond, 0, len(results))
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for _, result := range results {
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conds = append(conds, builder.Eq{"`index`": result.Index, "sha": result.SHA})
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}
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return contexts, getBase().And(builder.Or(conds...)).Select("context").Find(&contexts)
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}
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// NewCommitStatusOptions holds options for creating a CommitStatus
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