gotosocial/internal/federation/dereferencing/dereferencer.go
kim 33aee1b1e9
[chore] reformat GetAccount() functionality, support updating accounts based on last_fetch (#1411)
* reformat GetAccount() functionality, and add UpdateAccount() function.

* use fetched_at instead of last_webfingered_at

* catch local "not found" errors. small formatting / error string changes

* remove now unused error type

* return nil when wrapping nil error

* update expected error messages

* return correct url for foss satan webfinger

* add AP model for Some_User

* normalize local domain

* return notretrievable where appropriate

* expose NewErrNotRetrievable

* ensure webfinger for new accounts searched by uri

* update local account short circuit

* allow enrich to fail for already-known accounts

* remove unused LastWebfingeredAt

* expose test maps on mock http client

* update Update test

* reformat GetAccount() functionality, and add UpdateAccount() function.

* use fetched_at instead of last_webfingered_at

* catch local "not found" errors. small formatting / error string changes

* remove nil error checks (we shouldn't be passing nil errors to newError() initializers)

* remove mutex unlock on transport init fail (it hasn't yet been locked!)

* woops add back the error wrapping to use ErrNotRetrievable

* caches were never being started... 🙈

---------

Signed-off-by: kim <grufwub@gmail.com>
Co-authored-by: tsmethurst <tobi.smethurst@protonmail.com>
2023-02-03 20:03:05 +00:00

87 lines
4.8 KiB
Go

/*
GoToSocial
Copyright (C) 2021-2023 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 dereferencing
import (
"context"
"net/url"
"sync"
"github.com/superseriousbusiness/gotosocial/internal/ap"
"github.com/superseriousbusiness/gotosocial/internal/db"
"github.com/superseriousbusiness/gotosocial/internal/gtsmodel"
"github.com/superseriousbusiness/gotosocial/internal/media"
"github.com/superseriousbusiness/gotosocial/internal/transport"
"github.com/superseriousbusiness/gotosocial/internal/typeutils"
)
// Dereferencer wraps logic and functionality for doing dereferencing of remote accounts, statuses, etc, from federated instances.
type Dereferencer interface {
// GetAccountByURI will attempt to fetch an account by its URI, first checking the database and in the case of a remote account will either check the
// last_fetched (and updating if beyond fetch interval) or dereferencing for the first-time if this remote account has never been encountered before.
GetAccountByURI(ctx context.Context, requestUser string, uri *url.URL, block bool) (*gtsmodel.Account, error)
// GetAccountByUsernameDomain will attempt to fetch an account by username@domain, first checking the database and in the case of a remote account will either
// check the last_fetched (and updating if beyond fetch interval) or dereferencing for the first-time if this remote account has never been encountered before.
GetAccountByUsernameDomain(ctx context.Context, requestUser string, username string, domain string, block bool) (*gtsmodel.Account, error)
// UpdateAccount updates the given account if last_fetched is beyond fetch interval (or if force is set). An updated account model is returned, any media fetching is done async.
UpdateAccount(ctx context.Context, requestUser string, account *gtsmodel.Account, force bool) (*gtsmodel.Account, error)
GetStatus(ctx context.Context, username string, remoteStatusID *url.URL, refetch, includeParent bool) (*gtsmodel.Status, ap.Statusable, error)
EnrichRemoteStatus(ctx context.Context, username string, status *gtsmodel.Status, includeParent bool) (*gtsmodel.Status, error)
GetRemoteInstance(ctx context.Context, username string, remoteInstanceURI *url.URL) (*gtsmodel.Instance, error)
DereferenceAnnounce(ctx context.Context, announce *gtsmodel.Status, requestingUsername string) error
DereferenceThread(ctx context.Context, username string, statusIRI *url.URL, status *gtsmodel.Status, statusable ap.Statusable)
GetRemoteMedia(ctx context.Context, requestingUsername string, accountID string, remoteURL string, ai *media.AdditionalMediaInfo) (*media.ProcessingMedia, error)
GetRemoteEmoji(ctx context.Context, requestingUsername string, remoteURL string, shortcode string, domain string, id string, emojiURI string, ai *media.AdditionalEmojiInfo, refresh bool) (*media.ProcessingEmoji, error)
Handshaking(username string, remoteAccountID *url.URL) bool
}
type deref struct {
db db.DB
typeConverter typeutils.TypeConverter
transportController transport.Controller
mediaManager media.Manager
dereferencingAvatars map[string]*media.ProcessingMedia
dereferencingAvatarsLock sync.Mutex
dereferencingHeaders map[string]*media.ProcessingMedia
dereferencingHeadersLock sync.Mutex
dereferencingEmojis map[string]*media.ProcessingEmoji
dereferencingEmojisLock sync.Mutex
handshakes map[string][]*url.URL
handshakeSync sync.Mutex // mutex to lock/unlock when checking or updating the handshakes map
}
// NewDereferencer returns a Dereferencer initialized with the given parameters.
func NewDereferencer(db db.DB, typeConverter typeutils.TypeConverter, transportController transport.Controller, mediaManager media.Manager) Dereferencer {
return &deref{
db: db,
typeConverter: typeConverter,
transportController: transportController,
mediaManager: mediaManager,
dereferencingAvatars: make(map[string]*media.ProcessingMedia),
dereferencingHeaders: make(map[string]*media.ProcessingMedia),
dereferencingEmojis: make(map[string]*media.ProcessingEmoji),
handshakes: make(map[string][]*url.URL),
}
}