// GetRecentRolls retrieves the most recent N issues from the database.
func (d *db) GetRecentRolls(N int) ([]*autoroll.AutoRollIssue, error) {
var rv []*autoroll.AutoRollIssue
if err := d.db.View(func(tx *bolt.Tx) error {
// Retrieve the issue keys from the by-date bucket.
byDate := tx.Bucket(BUCKET_ROLLS_BY_DATE)
c := byDate.Cursor()
keys := make([][]byte, 0, N)
for k, v := c.Last(); k != nil && len(keys) < N; k, v = c.Prev() {
keys = append(keys, v)
}
// Retrieve the issues themselves.
b := tx.Bucket(BUCKET_ROLLS)
rv = make([]*autoroll.AutoRollIssue, 0, len(keys))
for _, k := range keys {
serialized := b.Get(k)
if serialized == nil {
return fmt.Errorf("DB consistency error: bucket %s contains data not present in bucket %s!", BUCKET_ROLLS_BY_DATE, BUCKET_ROLLS)
}
var a autoroll.AutoRollIssue
if err := json.Unmarshal(serialized, &a); err != nil {
return err
}
a.Created = a.Created.UTC()
a.Modified = a.Modified.UTC()
rv = append(rv, &a)
}
return nil
}); err != nil {
return nil, err
}
return rv, nil
}
// closeIssue closes the given issue with the given message.
func (r *AutoRoller) closeIssue(issue *autoroll.AutoRollIssue, result, msg string) error {
glog.Infof("Closing issue %d (result %q) with message: %s", issue.Issue, result, msg)
if err := r.rietveld.Close(issue.Issue, msg); err != nil {
return err
}
issue.Result = result
issue.Closed = true
issue.CommitQueue = false
issue.CommitQueueDryRun = false
return r.recent.Update(issue)
}
// Update updates the given DEPS roll in the recent rolls list.
func (r *RecentRolls) Update(roll *autoroll.AutoRollIssue) error {
if err := roll.Validate(); err != nil {
return err
}
r.mtx.Lock()
defer r.mtx.Unlock()
if err := r.db.UpdateRoll(roll); err != nil {
return err
}
return r.refreshRecentRolls()
}
// GetRoll retrieves the given issue from the database.
func (d *db) GetRoll(issue int64) (*autoroll.AutoRollIssue, error) {
var a *autoroll.AutoRollIssue
if err := d.db.View(func(tx *bolt.Tx) error {
b := tx.Bucket(BUCKET_ROLLS)
serialized := b.Get(issueToRollKey(issue))
if serialized == nil {
return nil
}
a = &autoroll.AutoRollIssue{}
if err := json.Unmarshal(serialized, a); err != nil {
return err
}
a.Created = a.Created.UTC()
a.Modified = a.Modified.UTC()
return nil
}); err != nil {
return nil, err
}
return a, nil
}
// Add adds a DEPS roll to the recent rolls list.
func (r *RecentRolls) Add(roll *autoroll.AutoRollIssue) error {
if err := roll.Validate(); err != nil {
return err
}
r.mtx.Lock()
defer r.mtx.Unlock()
// Refuse to insert more rolls if we already have an active roll.
if r.currentRoll() != nil {
return fmt.Errorf("There is already an active roll. Cannot add another.")
}
// Validate the new roll.
if roll.Closed {
return fmt.Errorf("Cannot insert a new roll which is already closed.")
}
if err := r.db.InsertRoll(roll); err != nil {
return err
}
return r.refreshRecentRolls()
}