mirror of
https://github.com/go-gitea/gitea.git
synced 2024-08-25 21:44:20 -04:00
Fix #19513 This PR introduce a new db method `InTransaction(context.Context)`, and also builtin check on `db.TxContext` and `db.WithTx`. There is also a new method `db.AutoTx` has been introduced but could be used by other PRs. `WithTx` will always open a new transaction, if a transaction exist in context, return an error. `AutoTx` will try to open a new transaction if no transaction exist in context. That means it will always enter a transaction if there is no error. Co-authored-by: delvh <dev.lh@web.de> Co-authored-by: 6543 <6543@obermui.de>
371 lines
12 KiB
Go
371 lines
12 KiB
Go
// Copyright 2017 Gitea. 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 git
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import (
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"context"
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"crypto/sha1"
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"fmt"
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"net/url"
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"strings"
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"time"
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asymkey_model "code.gitea.io/gitea/models/asymkey"
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"code.gitea.io/gitea/models/db"
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repo_model "code.gitea.io/gitea/models/repo"
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user_model "code.gitea.io/gitea/models/user"
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"code.gitea.io/gitea/modules/git"
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"code.gitea.io/gitea/modules/log"
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"code.gitea.io/gitea/modules/setting"
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api "code.gitea.io/gitea/modules/structs"
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"code.gitea.io/gitea/modules/timeutil"
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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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type CommitStatus struct {
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ID int64 `xorm:"pk autoincr"`
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Index int64 `xorm:"INDEX UNIQUE(repo_sha_index)"`
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RepoID int64 `xorm:"INDEX UNIQUE(repo_sha_index)"`
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Repo *repo_model.Repository `xorm:"-"`
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State api.CommitStatusState `xorm:"VARCHAR(7) NOT NULL"`
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SHA string `xorm:"VARCHAR(64) NOT NULL INDEX UNIQUE(repo_sha_index)"`
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TargetURL string `xorm:"TEXT"`
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Description string `xorm:"TEXT"`
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ContextHash string `xorm:"char(40) index"`
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Context string `xorm:"TEXT"`
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Creator *user_model.User `xorm:"-"`
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CreatorID int64
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CreatedUnix timeutil.TimeStamp `xorm:"INDEX created"`
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UpdatedUnix timeutil.TimeStamp `xorm:"INDEX updated"`
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}
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func init() {
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db.RegisterModel(new(CommitStatus))
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db.RegisterModel(new(CommitStatusIndex))
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}
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// upsertCommitStatusIndex the function will not return until it acquires the lock or receives an error.
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func upsertCommitStatusIndex(ctx context.Context, repoID int64, sha string) (err error) {
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// An atomic UPSERT operation (INSERT/UPDATE) is the only operation
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// that ensures that the key is actually locked.
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switch {
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case setting.Database.UseSQLite3 || setting.Database.UsePostgreSQL:
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_, err = db.Exec(ctx, "INSERT INTO `commit_status_index` (repo_id, sha, max_index) "+
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"VALUES (?,?,1) ON CONFLICT (repo_id,sha) DO UPDATE SET max_index = `commit_status_index`.max_index+1",
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repoID, sha)
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case setting.Database.UseMySQL:
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_, err = db.Exec(ctx, "INSERT INTO `commit_status_index` (repo_id, sha, max_index) "+
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"VALUES (?,?,1) ON DUPLICATE KEY UPDATE max_index = max_index+1",
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repoID, sha)
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case setting.Database.UseMSSQL:
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// https://weblogs.sqlteam.com/dang/2009/01/31/upsert-race-condition-with-merge/
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_, err = db.Exec(ctx, "MERGE `commit_status_index` WITH (HOLDLOCK) as target "+
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"USING (SELECT ? AS repo_id, ? AS sha) AS src "+
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"ON src.repo_id = target.repo_id AND src.sha = target.sha "+
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"WHEN MATCHED THEN UPDATE SET target.max_index = target.max_index+1 "+
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"WHEN NOT MATCHED THEN INSERT (repo_id, sha, max_index) "+
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"VALUES (src.repo_id, src.sha, 1);",
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repoID, sha)
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default:
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return fmt.Errorf("database type not supported")
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}
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return err
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}
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// GetNextCommitStatusIndex retried 3 times to generate a resource index
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func GetNextCommitStatusIndex(repoID int64, sha string) (int64, error) {
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for i := 0; i < db.MaxDupIndexAttempts; i++ {
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idx, err := getNextCommitStatusIndex(repoID, sha)
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if err == db.ErrResouceOutdated {
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continue
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}
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if err != nil {
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return 0, err
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}
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return idx, nil
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}
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return 0, db.ErrGetResourceIndexFailed
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}
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// getNextCommitStatusIndex return the next index
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func getNextCommitStatusIndex(repoID int64, sha string) (int64, error) {
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ctx, commiter, err := db.TxContext(db.DefaultContext)
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if err != nil {
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return 0, err
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}
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defer commiter.Close()
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var preIdx int64
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_, err = db.GetEngine(ctx).SQL("SELECT max_index FROM `commit_status_index` WHERE repo_id = ? AND sha = ?", repoID, sha).Get(&preIdx)
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if err != nil {
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return 0, err
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}
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if err := upsertCommitStatusIndex(ctx, repoID, sha); err != nil {
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return 0, err
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}
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var curIdx int64
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has, err := db.GetEngine(ctx).SQL("SELECT max_index FROM `commit_status_index` WHERE repo_id = ? AND sha = ? AND max_index=?", repoID, sha, preIdx+1).Get(&curIdx)
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if err != nil {
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return 0, err
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}
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if !has {
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return 0, db.ErrResouceOutdated
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}
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if err := commiter.Commit(); err != nil {
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return 0, err
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}
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return curIdx, nil
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}
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func (status *CommitStatus) loadAttributes(ctx context.Context) (err error) {
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if status.Repo == nil {
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status.Repo, err = repo_model.GetRepositoryByIDCtx(ctx, status.RepoID)
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if err != nil {
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return fmt.Errorf("getRepositoryByID [%d]: %w", status.RepoID, err)
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}
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}
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if status.Creator == nil && status.CreatorID > 0 {
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status.Creator, err = user_model.GetUserByIDCtx(ctx, status.CreatorID)
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if err != nil {
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return fmt.Errorf("getUserByID [%d]: %w", status.CreatorID, err)
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}
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}
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return nil
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}
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// APIURL returns the absolute APIURL to this commit-status.
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func (status *CommitStatus) APIURL() string {
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_ = status.loadAttributes(db.DefaultContext)
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return status.Repo.APIURL() + "/statuses/" + url.PathEscape(status.SHA)
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}
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// CalcCommitStatus returns commit status state via some status, the commit statues should order by id desc
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func CalcCommitStatus(statuses []*CommitStatus) *CommitStatus {
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var lastStatus *CommitStatus
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var state api.CommitStatusState
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for _, status := range statuses {
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if status.State.NoBetterThan(state) {
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state = status.State
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lastStatus = status
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}
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}
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if lastStatus == nil {
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if len(statuses) > 0 {
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lastStatus = statuses[0]
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} else {
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lastStatus = &CommitStatus{}
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}
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}
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return lastStatus
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}
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// CommitStatusOptions holds the options for query commit statuses
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type CommitStatusOptions struct {
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db.ListOptions
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State string
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SortType string
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}
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// GetCommitStatuses returns all statuses for a given commit.
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func GetCommitStatuses(repo *repo_model.Repository, sha string, opts *CommitStatusOptions) ([]*CommitStatus, int64, error) {
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if opts.Page <= 0 {
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opts.Page = 1
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}
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if opts.PageSize <= 0 {
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opts.Page = setting.ItemsPerPage
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}
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countSession := listCommitStatusesStatement(repo, sha, opts)
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countSession = db.SetSessionPagination(countSession, opts)
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maxResults, err := countSession.Count(new(CommitStatus))
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if err != nil {
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log.Error("Count PRs: %v", err)
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return nil, maxResults, err
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}
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statuses := make([]*CommitStatus, 0, opts.PageSize)
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findSession := listCommitStatusesStatement(repo, sha, opts)
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findSession = db.SetSessionPagination(findSession, opts)
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sortCommitStatusesSession(findSession, opts.SortType)
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return statuses, maxResults, findSession.Find(&statuses)
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}
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func listCommitStatusesStatement(repo *repo_model.Repository, sha string, opts *CommitStatusOptions) *xorm.Session {
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sess := db.GetEngine(db.DefaultContext).Where("repo_id = ?", repo.ID).And("sha = ?", sha)
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switch opts.State {
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case "pending", "success", "error", "failure", "warning":
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sess.And("state = ?", opts.State)
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}
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return sess
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}
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func sortCommitStatusesSession(sess *xorm.Session, sortType string) {
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switch sortType {
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case "oldest":
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sess.Asc("created_unix")
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case "recentupdate":
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sess.Desc("updated_unix")
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case "leastupdate":
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sess.Asc("updated_unix")
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case "leastindex":
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sess.Desc("index")
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case "highestindex":
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sess.Asc("index")
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default:
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sess.Desc("created_unix")
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}
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}
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// CommitStatusIndex represents a table for commit status index
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type CommitStatusIndex struct {
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ID int64
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RepoID int64 `xorm:"unique(repo_sha)"`
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SHA string `xorm:"unique(repo_sha)"`
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MaxIndex int64 `xorm:"index"`
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}
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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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sess = db.SetSessionPagination(sess, &listOptions)
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count, err := sess.FindAndCount(&ids)
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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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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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}
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// FindRepoRecentCommitStatusContexts returns repository's recent commit status contexts
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func FindRepoRecentCommitStatusContexts(repoID int64, before time.Duration) ([]string, error) {
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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(db.DefaultContext).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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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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return contexts, nil
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}
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return contexts, db.GetEngine(db.DefaultContext).Select("context").Table("commit_status").In("id", ids).Find(&contexts)
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}
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// NewCommitStatusOptions holds options for creating a CommitStatus
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type NewCommitStatusOptions struct {
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Repo *repo_model.Repository
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Creator *user_model.User
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SHA string
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CommitStatus *CommitStatus
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}
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// NewCommitStatus save commit statuses into database
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func NewCommitStatus(opts NewCommitStatusOptions) error {
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if opts.Repo == nil {
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return fmt.Errorf("NewCommitStatus[nil, %s]: no repository specified", opts.SHA)
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}
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repoPath := opts.Repo.RepoPath()
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if opts.Creator == nil {
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return fmt.Errorf("NewCommitStatus[%s, %s]: no user specified", repoPath, opts.SHA)
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}
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// Get the next Status Index
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idx, err := GetNextCommitStatusIndex(opts.Repo.ID, opts.SHA)
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if err != nil {
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return fmt.Errorf("generate commit status index failed: %w", err)
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}
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ctx, committer, err := db.TxContext(db.DefaultContext)
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if err != nil {
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return fmt.Errorf("NewCommitStatus[repo_id: %d, user_id: %d, sha: %s]: %w", opts.Repo.ID, opts.Creator.ID, opts.SHA, err)
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}
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defer committer.Close()
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opts.CommitStatus.Description = strings.TrimSpace(opts.CommitStatus.Description)
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opts.CommitStatus.Context = strings.TrimSpace(opts.CommitStatus.Context)
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opts.CommitStatus.TargetURL = strings.TrimSpace(opts.CommitStatus.TargetURL)
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opts.CommitStatus.SHA = opts.SHA
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opts.CommitStatus.CreatorID = opts.Creator.ID
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opts.CommitStatus.RepoID = opts.Repo.ID
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opts.CommitStatus.Index = idx
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log.Debug("NewCommitStatus[%s, %s]: %d", repoPath, opts.SHA, opts.CommitStatus.Index)
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opts.CommitStatus.ContextHash = hashCommitStatusContext(opts.CommitStatus.Context)
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// Insert new CommitStatus
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if _, err = db.GetEngine(ctx).Insert(opts.CommitStatus); err != nil {
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return fmt.Errorf("Insert CommitStatus[%s, %s]: %w", repoPath, opts.SHA, err)
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}
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return committer.Commit()
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}
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// SignCommitWithStatuses represents a commit with validation of signature and status state.
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type SignCommitWithStatuses struct {
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Status *CommitStatus
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Statuses []*CommitStatus
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*asymkey_model.SignCommit
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}
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// ParseCommitsWithStatus checks commits latest statuses and calculates its worst status state
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func ParseCommitsWithStatus(oldCommits []*asymkey_model.SignCommit, repo *repo_model.Repository) []*SignCommitWithStatuses {
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newCommits := make([]*SignCommitWithStatuses, 0, len(oldCommits))
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for _, c := range oldCommits {
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commit := &SignCommitWithStatuses{
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SignCommit: c,
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}
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statuses, _, err := GetLatestCommitStatus(db.DefaultContext, repo.ID, commit.ID.String(), db.ListOptions{})
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if err != nil {
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log.Error("GetLatestCommitStatus: %v", err)
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} else {
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commit.Statuses = statuses
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commit.Status = CalcCommitStatus(statuses)
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}
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newCommits = append(newCommits, commit)
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}
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return newCommits
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}
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// hashCommitStatusContext hash context
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func hashCommitStatusContext(context string) string {
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return fmt.Sprintf("%x", sha1.Sum([]byte(context)))
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}
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// ConvertFromGitCommit converts git commits into SignCommitWithStatuses
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func ConvertFromGitCommit(commits []*git.Commit, repo *repo_model.Repository) []*SignCommitWithStatuses {
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return ParseCommitsWithStatus(
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asymkey_model.ParseCommitsWithSignature(
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user_model.ValidateCommitsWithEmails(commits),
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repo.GetTrustModel(),
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func(user *user_model.User) (bool, error) {
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return repo_model.IsOwnerMemberCollaborator(repo, user.ID)
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},
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),
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repo,
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)
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}
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