Protect against NPEs in notifications list (#10879)
Unfortunately there appears to be potential race with notifications being set before the associated issue has been committed. This PR adds protection in to the notifications list to log any failures and remove these notifications from the display. References #10815 - and prevents the panic but does not completely fix this. Signed-off-by: Andrew Thornton <art27@cantab.net>
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zeripath
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d01763ee14
2 changed files with 75 additions and 22 deletions
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@ -481,9 +481,9 @@ func (nl NotificationList) getPendingRepoIDs() []int64 {
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}
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// LoadRepos loads repositories from database
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func (nl NotificationList) LoadRepos() (RepositoryList, error) {
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func (nl NotificationList) LoadRepos() (RepositoryList, []int, error) {
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if len(nl) == 0 {
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return RepositoryList{}, nil
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return RepositoryList{}, []int{}, nil
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}
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var repoIDs = nl.getPendingRepoIDs()
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@ -498,7 +498,7 @@ func (nl NotificationList) LoadRepos() (RepositoryList, error) {
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In("id", repoIDs[:limit]).
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Rows(new(Repository))
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if err != nil {
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return nil, err
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return nil, nil, err
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}
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for rows.Next() {
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@ -506,7 +506,7 @@ func (nl NotificationList) LoadRepos() (RepositoryList, error) {
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err = rows.Scan(&repo)
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if err != nil {
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rows.Close()
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return nil, err
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return nil, nil, err
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}
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repos[repo.ID] = &repo
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@ -517,14 +517,21 @@ func (nl NotificationList) LoadRepos() (RepositoryList, error) {
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repoIDs = repoIDs[limit:]
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}
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failed := []int{}
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var reposList = make(RepositoryList, 0, len(repoIDs))
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for _, notification := range nl {
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for i, notification := range nl {
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if notification.Repository == nil {
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notification.Repository = repos[notification.RepoID]
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}
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if notification.Repository == nil {
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log.Error("Notification[%d]: RepoID: %d not found", notification.ID, notification.RepoID)
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failed = append(failed, i)
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continue
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}
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var found bool
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for _, r := range reposList {
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if r.ID == notification.Repository.ID {
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if r.ID == notification.RepoID {
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found = true
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break
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}
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@ -533,7 +540,7 @@ func (nl NotificationList) LoadRepos() (RepositoryList, error) {
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reposList = append(reposList, notification.Repository)
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}
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}
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return reposList, nil
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return reposList, failed, nil
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}
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func (nl NotificationList) getPendingIssueIDs() []int64 {
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@ -550,9 +557,9 @@ func (nl NotificationList) getPendingIssueIDs() []int64 {
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}
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// LoadIssues loads issues from database
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func (nl NotificationList) LoadIssues() error {
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func (nl NotificationList) LoadIssues() ([]int, error) {
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if len(nl) == 0 {
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return nil
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return []int{}, nil
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}
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var issueIDs = nl.getPendingIssueIDs()
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@ -567,7 +574,7 @@ func (nl NotificationList) LoadIssues() error {
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In("id", issueIDs[:limit]).
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Rows(new(Issue))
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if err != nil {
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return err
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return nil, err
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}
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for rows.Next() {
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@ -575,7 +582,7 @@ func (nl NotificationList) LoadIssues() error {
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err = rows.Scan(&issue)
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if err != nil {
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rows.Close()
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return err
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return nil, err
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}
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issues[issue.ID] = &issue
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@ -586,13 +593,38 @@ func (nl NotificationList) LoadIssues() error {
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issueIDs = issueIDs[limit:]
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}
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for _, notification := range nl {
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failures := []int{}
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for i, notification := range nl {
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if notification.Issue == nil {
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notification.Issue = issues[notification.IssueID]
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if notification.Issue == nil {
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log.Error("Notification[%d]: IssueID: %d Not Found", notification.ID, notification.IssueID)
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failures = append(failures, i)
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continue
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}
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notification.Issue.Repo = notification.Repository
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}
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}
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return nil
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return failures, nil
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}
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// Without returns the notification list without the failures
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func (nl NotificationList) Without(failures []int) NotificationList {
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if failures == nil || len(failures) == 0 {
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return nl
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}
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remaining := make([]*Notification, 0, len(nl))
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last := -1
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var i int
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for _, i = range failures {
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remaining = append(remaining, nl[last+1:i]...)
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last = i
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}
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if len(nl) > i {
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remaining = append(remaining, nl[i+1:]...)
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}
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return remaining
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}
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func (nl NotificationList) getPendingCommentIDs() []int64 {
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@ -609,9 +641,9 @@ func (nl NotificationList) getPendingCommentIDs() []int64 {
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}
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// LoadComments loads comments from database
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func (nl NotificationList) LoadComments() error {
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func (nl NotificationList) LoadComments() ([]int, error) {
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if len(nl) == 0 {
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return nil
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return []int{}, nil
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}
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var commentIDs = nl.getPendingCommentIDs()
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@ -626,7 +658,7 @@ func (nl NotificationList) LoadComments() error {
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In("id", commentIDs[:limit]).
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Rows(new(Comment))
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if err != nil {
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return err
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return nil, err
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}
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for rows.Next() {
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@ -634,7 +666,7 @@ func (nl NotificationList) LoadComments() error {
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err = rows.Scan(&comment)
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if err != nil {
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rows.Close()
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return err
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return nil, err
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}
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comments[comment.ID] = &comment
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@ -645,13 +677,19 @@ func (nl NotificationList) LoadComments() error {
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commentIDs = commentIDs[limit:]
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}
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for _, notification := range nl {
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failures := []int{}
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for i, notification := range nl {
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if notification.CommentID > 0 && notification.Comment == nil && comments[notification.CommentID] != nil {
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notification.Comment = comments[notification.CommentID]
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if notification.Comment == nil {
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log.Error("Notification[%d]: CommentID[%d] failed to load", notification.ID, notification.CommentID)
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failures = append(failures, i)
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continue
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}
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notification.Comment.Issue = notification.Issue
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}
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}
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return nil
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return failures, nil
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}
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// GetNotificationCount returns the notification count for user
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@ -81,24 +81,39 @@ func Notifications(c *context.Context) {
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return
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}
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repos, err := notifications.LoadRepos()
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failCount := 0
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repos, failures, err := notifications.LoadRepos()
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if err != nil {
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c.ServerError("LoadRepos", err)
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return
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}
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notifications = notifications.Without(failures)
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if err := repos.LoadAttributes(); err != nil {
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c.ServerError("LoadAttributes", err)
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return
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}
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failCount += len(failures)
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if err := notifications.LoadIssues(); err != nil {
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failures, err = notifications.LoadIssues()
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if err != nil {
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c.ServerError("LoadIssues", err)
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return
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}
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if err := notifications.LoadComments(); err != nil {
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notifications = notifications.Without(failures)
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failCount += len(failures)
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failures, err = notifications.LoadComments()
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if err != nil {
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c.ServerError("LoadComments", err)
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return
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}
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notifications = notifications.Without(failures)
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failCount += len(failures)
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if failCount > 0 {
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c.Flash.Error(fmt.Sprintf("ERROR: %d notifications were removed due to missing parts - check the logs", failCount))
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}
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title := c.Tr("notifications")
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if status == models.NotificationStatusUnread && total > 0 {
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