| // Package activitylog implements utility for activity logging into database. |
| package activitylog |
| |
| import ( |
| "context" |
| "fmt" |
| "time" |
| |
| "go.skia.org/infra/go/ds" |
| "google.golang.org/api/iterator" |
| ) |
| |
| // Activity stores information on one user action activity. This corresponds to |
| // one record in the activity database table. See DESIGN.md for details. |
| type Activity struct { |
| ID int64 `datastore:",noindex"` |
| TS int64 |
| UserID string `datastore:",noindex"` |
| Action string `datastore:",noindex"` |
| URL string `datastore:",noindex"` |
| } |
| |
| // Date returns an RFC3339 string for the Activity's TS. |
| func (a *Activity) Date() string { |
| return time.Unix(a.TS, 0).Format(time.RFC3339) |
| } |
| |
| // Write writes a new activity record to the db table activitylog. |
| // Input is in types.Activity format, but ID and TS are ignored. Instead, always |
| // use autoincrement ID and the current timestamp for the new record. |
| func Write(r *Activity) error { |
| if r.TS == 0 { |
| r.TS = time.Now().Unix() |
| } |
| key := ds.NewKey(ds.ACTIVITY) |
| key.ID = r.ID |
| if _, err := ds.DS.Put(context.TODO(), key, r); err != nil { |
| return fmt.Errorf("Failed to store activity: %s", err) |
| } |
| return nil |
| } |
| |
| // GetRecent returns the most recent n activity records in Activity struct format. |
| func GetRecent(n int) ([]*Activity, error) { |
| ret := []*Activity{} |
| q := ds.NewQuery(ds.ACTIVITY).EventualConsistency().Limit(n).Order("-TS") |
| it := ds.DS.Run(context.TODO(), q) |
| for { |
| a := &Activity{} |
| k, err := it.Next(a) |
| if err == iterator.Done { |
| break |
| } else if err != nil { |
| return nil, fmt.Errorf("Failed retrieving activity list: %s", err) |
| } |
| a.ID = k.ID |
| ret = append(ret, a) |
| } |
| return ret, nil |
| } |