followers.go (2028B)
1 // GoToSocial 2 // Copyright (C) GoToSocial Authors admin@gotosocial.org 3 // SPDX-License-Identifier: AGPL-3.0-or-later 4 // 5 // This program is free software: you can redistribute it and/or modify 6 // it under the terms of the GNU Affero General Public License as published by 7 // the Free Software Foundation, either version 3 of the License, or 8 // (at your option) any later version. 9 // 10 // This program is distributed in the hope that it will be useful, 11 // but WITHOUT ANY WARRANTY; without even the implied warranty of 12 // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 13 // GNU Affero General Public License for more details. 14 // 15 // You should have received a copy of the GNU Affero General Public License 16 // along with this program. If not, see <http://www.gnu.org/licenses/>. 17 18 package federatingdb 19 20 import ( 21 "context" 22 "fmt" 23 "net/url" 24 25 "github.com/superseriousbusiness/activity/streams/vocab" 26 "github.com/superseriousbusiness/gotosocial/internal/log" 27 ) 28 29 // Followers obtains the Followers Collection for an actor with the 30 // given id. 31 // 32 // If modified, the library will then call Update. 33 // 34 // The library makes this call only after acquiring a lock first. 35 func (f *federatingDB) Followers(ctx context.Context, actorIRI *url.URL) (followers vocab.ActivityStreamsCollection, err error) { 36 acct, err := f.getAccountForIRI(ctx, actorIRI) 37 if err != nil { 38 return nil, err 39 } 40 41 follows, err := f.state.DB.GetAccountFollowers(ctx, acct.ID) 42 if err != nil { 43 return nil, fmt.Errorf("Followers: db error getting followers for account id %s: %s", acct.ID, err) 44 } 45 46 iris := make([]*url.URL, 0, len(follows)) 47 for _, follow := range follows { 48 if follow.Account == nil { 49 // Follow account no longer exists, 50 // for some reason. Skip this one. 51 log.WithContext(ctx).WithField("follow", follow).Warnf("follow missing account %s", follow.AccountID) 52 continue 53 } 54 55 u, err := url.Parse(follow.Account.URI) 56 if err != nil { 57 return nil, err 58 } 59 60 iris = append(iris, u) 61 } 62 63 return f.collectIRIs(ctx, iris) 64 }