gotosocial/internal/federation/federatingdb/delete.go

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/*
GoToSocial
Copyright (C) 2021 GoToSocial Authors admin@gotosocial.org
This program is free software: you can redistribute it and/or modify
it under the terms of the GNU Affero General Public License as published by
the Free Software Foundation, either version 3 of the License, or
(at your option) any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU Affero General Public License for more details.
You should have received a copy of the GNU Affero General Public License
along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
package federatingdb
import (
"context"
"fmt"
"net/url"
"github.com/sirupsen/logrus"
"github.com/superseriousbusiness/gotosocial/internal/gtsmodel"
"github.com/superseriousbusiness/gotosocial/internal/util"
)
// Delete removes the entry with the given id.
//
// Delete is only called for federated objects. Deletes from the Social
// Protocol instead call Update to create a Tombstone.
//
// The library makes this call only after acquiring a lock first.
func (f *federatingDB) Delete(ctx context.Context, id *url.URL) error {
l := f.log.WithFields(
logrus.Fields{
"func": "Delete",
"id": id.String(),
},
)
l.Debugf("received DELETE id %s", id.String())
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targetAcctI := ctx.Value(util.APAccount)
if targetAcctI == nil {
// If the target account wasn't set on the context, that means this request didn't pass through the
// API, but came from inside GtS as the result of another activity on this instance. That being so,
// we can safely just ignore this activity, since we know we've already processed it elsewhere.
return nil
}
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targetAcct, ok := targetAcctI.(*gtsmodel.Account)
if !ok {
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l.Error("DELETE: target account was set on context but couldn't be parsed")
return nil
}
fromFederatorChanI := ctx.Value(util.APFromFederatorChanKey)
if fromFederatorChanI == nil {
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l.Error("DELETE: from federator channel wasn't set on context")
return nil
}
fromFederatorChan, ok := fromFederatorChanI.(chan gtsmodel.FromFederator)
if !ok {
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l.Error("DELETE: from federator channel was set on context but couldn't be parsed")
return nil
}
// in a delete we only get the URI, we can't know if we have a status or a profile or something else,
// so we have to try a few different things...
s, err := f.db.GetStatusByURI(ctx, id.String())
if err == nil {
// it's a status
l.Debugf("uri is for status with id: %s", s.ID)
if err := f.db.DeleteByID(ctx, s.ID, &gtsmodel.Status{}); err != nil {
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return fmt.Errorf("DELETE: err deleting status: %s", err)
}
fromFederatorChan <- gtsmodel.FromFederator{
APObjectType: gtsmodel.ActivityStreamsNote,
APActivityType: gtsmodel.ActivityStreamsDelete,
GTSModel: s,
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ReceivingAccount: targetAcct,
}
}
a, err := f.db.GetAccountByURI(ctx, id.String())
if err == nil {
// it's an account
l.Debugf("uri is for an account with id: %s", a.ID)
if err := f.db.DeleteByID(ctx, a.ID, &gtsmodel.Account{}); err != nil {
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return fmt.Errorf("DELETE: err deleting account: %s", err)
}
fromFederatorChan <- gtsmodel.FromFederator{
APObjectType: gtsmodel.ActivityStreamsProfile,
APActivityType: gtsmodel.ActivityStreamsDelete,
GTSModel: a,
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ReceivingAccount: targetAcct,
}
}
return nil
}