fix sqlite lock (#5184)

* fix sqlite lock

* fix bug

Co-Authored-By: lunny <xiaolunwen@gmail.com>

* fix bug

Co-Authored-By: lunny <xiaolunwen@gmail.com>

models/issue.go

@@ -655,9 +655,9 @@ func (issue *Issue) changeStatus(e *xorm.Session, doer *User, repo *Repository,
 	}
 
 	// Check for open dependencies
-	if isClosed && issue.Repo.IsDependenciesEnabled() {
+	if isClosed && issue.Repo.isDependenciesEnabled(e) {
 		// only check if dependencies are enabled and we're about to close an issue, otherwise reopening an issue would fail when there are unsatisfied dependencies
-		noDeps, err := IssueNoDependenciesLeft(issue)
+		noDeps, err := issueNoDependenciesLeft(e, issue)
 		if err != nil {
 			return err
 		}
@@ -721,6 +721,7 @@ func (issue *Issue) ChangeStatus(doer *User, repo *Repository, isClosed bool) (e
 	if err = sess.Commit(); err != nil {
 		return fmt.Errorf("Commit: %v", err)
 	}
+	sess.Close()
 
 	mode, _ := AccessLevel(issue.Poster.ID, issue.Repo)
 	if issue.IsPull {

models/issue_dependency.go

@@ -113,8 +113,11 @@ func issueDepExists(e Engine, issueID int64, depID int64) (bool, error) {
 
 // IssueNoDependenciesLeft checks if issue can be closed
 func IssueNoDependenciesLeft(issue *Issue) (bool, error) {
+	return issueNoDependenciesLeft(x, issue)
+}
 
-	exists, err := x.
+func issueNoDependenciesLeft(e Engine, issue *Issue) (bool, error) {
+	exists, err := e.
 		Table("issue_dependency").
 		Select("issue.*").
 		Join("INNER", "issue", "issue.id = issue_dependency.dependency_id").
@@ -127,9 +130,13 @@ func IssueNoDependenciesLeft(issue *Issue) (bool, error) {
 
 // IsDependenciesEnabled returns if dependecies are enabled and returns the default setting if not set.
 func (repo *Repository) IsDependenciesEnabled() bool {
+	return repo.isDependenciesEnabled(x)
+}
+
+func (repo *Repository) isDependenciesEnabled(e Engine) bool {
 	var u *RepoUnit
 	var err error
-	if u, err = repo.GetUnit(UnitTypeIssues); err != nil {
+	if u, err = repo.getUnit(e, UnitTypeIssues); err != nil {
 		log.Trace("%s", err)
 		return setting.Service.DefaultEnableDependencies
 	}

models/repo.go

@@ -448,7 +448,11 @@ func (repo *Repository) MustGetUnit(tp UnitType) *RepoUnit {
 
 // GetUnit returns a RepoUnit object
 func (repo *Repository) GetUnit(tp UnitType) (*RepoUnit, error) {
-	if err := repo.getUnits(x); err != nil {
+	return repo.getUnit(x, tp)
+}
+
+func (repo *Repository) getUnit(e Engine, tp UnitType) (*RepoUnit, error) {
+	if err := repo.getUnits(e); err != nil {
 		return nil, err
 	}
 	for _, unit := range repo.Units {