autonomic-cooperative/gotosocial
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i can't even

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This commit is contained in:
tsmethurst 2021-06-06 18:02:03 +02:00
parent d55c5d8f42
commit 5d65b6ca0a
11 changed files with 728 additions and 364 deletions
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3
internal/db/db.go
View File

@ -255,7 +255,8 @@ type DB interface {
// This slice will be unfiltered, not taking account of blocks and whatnot, so filter it before serving it back to a user.
WhoBoostedStatus(status *gtsmodel.Status) ([]*gtsmodel.Account, error)
GetStatusesWhereFollowing(accountID string, limit int, offsetStatusID string) ([]*gtsmodel.Status, error)
// GetStatusesWhereFollowing returns a slice of statuses from accounts that are followed by the given account id.
GetStatusesWhereFollowing(accountID string, limit int, maxID string, minID string, sinceID string) ([]*gtsmodel.Status, error)
// GetPublicTimelineForAccount fetches the account's PUBLIC timline -- ie., posts and replies that are public.
// It will use the given filters and try to return as many statuses as possible up to the limit.

56
internal/db/pg/pg.go
View File

@ -788,7 +788,7 @@ func (ps *postgresService) StatusVisible(targetStatus *gtsmodel.Status, requesti
// if target account is suspended then don't show the status
if !targetAccount.SuspendedAt.IsZero() {
l.Debug("target account suspended at is not zero")
l.Trace("target account suspended at is not zero")
return false, nil
}
@ -807,7 +807,7 @@ func (ps *postgresService) StatusVisible(targetStatus *gtsmodel.Status, requesti
// if target user is disabled, not yet approved, or not confirmed then don't show the status
// (although in the latter two cases it's unlikely they posted a status yet anyway, but you never know!)
if targetUser.Disabled || !targetUser.Approved || targetUser.ConfirmedAt.IsZero() {
l.Debug("target user is disabled, not approved, or not confirmed")
l.Trace("target user is disabled, not approved, or not confirmed")
return false, nil
}
}
@ -818,14 +818,14 @@ func (ps *postgresService) StatusVisible(targetStatus *gtsmodel.Status, requesti
if targetStatus.Visibility == gtsmodel.VisibilityPublic {
return true, nil
}
l.Debug("requesting account is nil but the target status isn't public")
l.Trace("requesting account is nil but the target status isn't public")
return false, nil
}
// if requesting account is suspended then don't show the status -- although they probably shouldn't have gotten
// this far (ie., been authed) in the first place: this is just for safety.
if !requestingAccount.SuspendedAt.IsZero() {
l.Debug("requesting account is suspended")
l.Trace("requesting account is suspended")
return false, nil
}
@ -843,7 +843,7 @@ func (ps *postgresService) StatusVisible(targetStatus *gtsmodel.Status, requesti
}
// okay, user exists, so make sure it has full privileges/is confirmed/approved
if requestingUser.Disabled || !requestingUser.Approved || requestingUser.ConfirmedAt.IsZero() {
l.Debug("requesting account is local but corresponding user is either disabled, not approved, or not confirmed")
l.Trace("requesting account is local but corresponding user is either disabled, not approved, or not confirmed")
return false, nil
}
}
@ -860,7 +860,7 @@ func (ps *postgresService) StatusVisible(targetStatus *gtsmodel.Status, requesti
return false, err
} else if blocked {
// don't allow the status to be viewed if a block exists in *either* direction between these two accounts, no creepy stalking please
l.Debug("a block exists between requesting account and target account")
l.Trace("a block exists between requesting account and target account")
return false, nil
}
@ -871,7 +871,7 @@ func (ps *postgresService) StatusVisible(targetStatus *gtsmodel.Status, requesti
if blocked, err := ps.Blocked(relevantAccounts.ReplyToAccount.ID, requestingAccount.ID); err != nil {
return false, err
} else if blocked {
l.Debug("a block exists between requesting account and reply to account")
l.Trace("a block exists between requesting account and reply to account")
return false, nil
}
@ -882,7 +882,7 @@ func (ps *postgresService) StatusVisible(targetStatus *gtsmodel.Status, requesti
return false, err
}
if !followsRepliedAccount {
l.Debug("target status is a followers-only reply to an account that is not followed by the requesting account")
l.Trace("target status is a followers-only reply to an account that is not followed by the requesting account")
return false, nil
}
}
@ -893,7 +893,7 @@ func (ps *postgresService) StatusVisible(targetStatus *gtsmodel.Status, requesti
if blocked, err := ps.Blocked(relevantAccounts.BoostedAccount.ID, requestingAccount.ID); err != nil {
return false, err
} else if blocked {
l.Debug("a block exists between requesting account and boosted account")
l.Trace("a block exists between requesting account and boosted account")
return false, nil
}
}
@ -903,7 +903,7 @@ func (ps *postgresService) StatusVisible(targetStatus *gtsmodel.Status, requesti
if blocked, err := ps.Blocked(relevantAccounts.BoostedReplyToAccount.ID, requestingAccount.ID); err != nil {
return false, err
} else if blocked {
l.Debug("a block exists between requesting account and boosted reply to account")
l.Trace("a block exists between requesting account and boosted reply to account")
return false, nil
}
}
@ -913,7 +913,7 @@ func (ps *postgresService) StatusVisible(targetStatus *gtsmodel.Status, requesti
if blocked, err := ps.Blocked(a.ID, requestingAccount.ID); err != nil {
return false, err
} else if blocked {
l.Debug("a block exists between requesting account and a mentioned account")
l.Trace("a block exists between requesting account and a mentioned account")
return false, nil
}
}
@ -939,7 +939,7 @@ func (ps *postgresService) StatusVisible(targetStatus *gtsmodel.Status, requesti
return false, err
}
if !follows {
l.Debug("requested status is followers only but requesting account is not a follower")
l.Trace("requested status is followers only but requesting account is not a follower")
return false, nil
}
return true, nil
@ -950,12 +950,12 @@ func (ps *postgresService) StatusVisible(targetStatus *gtsmodel.Status, requesti
return false, err
}
if !mutuals {
l.Debug("requested status is mutuals only but accounts aren't mufos")
l.Trace("requested status is mutuals only but accounts aren't mufos")
return false, nil
}
return true, nil
case gtsmodel.VisibilityDirect:
l.Debug("requesting account requests a status it's not mentioned in")
l.Trace("requesting account requests a status it's not mentioned in")
return false, nil // it's not mentioned -_-
}
@ -1133,22 +1133,32 @@ func (ps *postgresService) WhoBoostedStatus(status *gtsmodel.Status) ([]*gtsmode
return accounts, nil
}
func (ps *postgresService) GetStatusesWhereFollowing(accountID string, limit int, offsetStatusID string) ([]*gtsmodel.Status, error) {
func (ps *postgresService) GetStatusesWhereFollowing(accountID string, limit int, offsetStatusID string, includeOffsetStatus bool, ascending bool) ([]*gtsmodel.Status, error) {
statuses := []*gtsmodel.Status{}
q := ps.conn.Model(&statuses)
q = q.ColumnExpr("status.*").
Join("JOIN follows AS f ON f.target_account_id = status.account_id").
Where("f.account_id = ?", accountID).
Order("status.created_at DESC")
Where("f.account_id = ?", accountID)
if ascending {
q = q.Order("status.created_at")
} else {
q = q.Order("status.created_at DESC")
}
s := &gtsmodel.Status{}
if offsetStatusID != "" {
s := &gtsmodel.Status{}
if err := ps.conn.Model(s).Where("id = ?", offsetStatusID).Select(); err != nil {
return nil, err
}
q = q.Where("status.created_at < ?", s.CreatedAt)
if ascending {
q = q.Where("status.created_at > ?", s.CreatedAt)
} else {
q = q.Where("status.created_at < ?", s.CreatedAt)
}
}
if limit > 0 {
@ -1162,6 +1172,14 @@ func (ps *postgresService) GetStatusesWhereFollowing(accountID string, limit int
}
}
if includeOffsetStatus {
if ascending {
statuses = append([]*gtsmodel.Status{s}, statuses...)
} else {
statuses = append(statuses, s)
}
}
return statuses, nil
}

54
internal/processing/timeline.go
View File

@ -32,9 +32,53 @@ import (
func (p *processor) HomeTimelineGet(authed *oauth.Auth, maxID string, sinceID string, minID string, limit int, local bool) ([]*apimodel.Status, gtserror.WithCode) {
statuses, err := p.timelineManager.HomeTimeline(authed.Account.ID, maxID, sinceID, minID, limit, local)
if err != nil {
return nil, gtserror.NewErrorInternalError(err)
statuses := []*apimodel.Status{}
grabloop:
for len(statuses) < limit {
gtsStatuses, err := p.db.GetStatusesWhereFollowing(authed.Account.ID, limit, maxID, false, false)
if err != nil {
if _, ok := err.(db.ErrNoEntries); !ok {
return nil, gtserror.NewErrorInternalError(fmt.Errorf("HomeTimelineGet: error getting statuses from db: %s", err))
}
break grabloop // we just don't have enough statuses left in the db so index what we've got and then bail
}
for _, s := range gtsStatuses {
relevantAccounts, err := p.db.PullRelevantAccountsFromStatus(s)
if err != nil {
continue
}
visible, err := p.db.StatusVisible(s, authed.Account, relevantAccounts)
if err != nil {
continue
}
if visible {
// check if this is a boost...
var reblogOfStatus *gtsmodel.Status
if s.BoostOfID != "" {
s := &gtsmodel.Status{}
if err := p.db.GetByID(s.BoostOfID, s); err != nil {
continue
}
reblogOfStatus = s
}
// serialize the status (or, at least, convert it to a form that's ready to be serialized)
apiModelStatus, err := p.tc.StatusToMasto(s, relevantAccounts.StatusAuthor, authed.Account, relevantAccounts.BoostedAccount, relevantAccounts.ReplyToAccount, reblogOfStatus)
if err != nil {
continue
}
statuses = append(statuses, apiModelStatus)
if len(statuses) == limit {
// we have enough
break grabloop
}
}
}
}
return statuses, nil
@ -163,7 +207,7 @@ func (p *processor) initTimelineFor(account *gtsmodel.Account, wg *sync.WaitGrou
desiredIndexLength := p.timelineManager.GetDesiredIndexLength()
statuses, err := p.db.GetStatusesWhereFollowing(account.ID, desiredIndexLength, "")
statuses, err := p.db.GetStatusesWhereFollowing(account.ID, desiredIndexLength, "", false, false)
if err != nil {
l.Error(fmt.Errorf("initTimelineFor: error getting statuses: %s", err))
return
@ -180,7 +224,7 @@ func (p *processor) initTimelineFor(account *gtsmodel.Account, wg *sync.WaitGrou
}
if rearmostStatusID != "" {
moreStatuses, err := p.db.GetStatusesWhereFollowing(account.ID, desiredIndexLength/2, rearmostStatusID)
moreStatuses, err := p.db.GetStatusesWhereFollowing(account.ID, desiredIndexLength/2, rearmostStatusID, false, false)
if err != nil {
l.Error(fmt.Errorf("initTimelineFor: error getting more statuses: %s", err))
return

250
internal/timeline/get.go Normal file
View File

@ -0,0 +1,250 @@
package timeline
import (
"container/list"
"errors"
"fmt"
apimodel "github.com/superseriousbusiness/gotosocial/internal/api/model"
)
func (t *timeline) GetXFromTop(amount int) ([]*apimodel.Status, error) {
// make a slice of statuses with the length we need to return
statuses := make([]*apimodel.Status, 0, amount)
// if there are no prepared posts, just return the empty slice
if t.preparedPosts.data == nil {
t.preparedPosts.data = &list.List{}
}
// make sure we have enough posts prepared to return
if t.preparedPosts.data.Len() < amount {
if err := t.PrepareFromTop(amount); err != nil {
return nil, err
}
}
// work through the prepared posts from the top and return
var served int
for e := t.preparedPosts.data.Front(); e != nil; e = e.Next() {
entry, ok := e.Value.(*preparedPostsEntry)
if !ok {
return nil, errors.New("GetXFromTop: could not parse e as a preparedPostsEntry")
}
statuses = append(statuses, entry.prepared)
served = served + 1
if served >= amount {
break
}
}
return statuses, nil
}
func (t *timeline) GetXBehindID(amount int, behindID string) ([]*apimodel.Status, error) {
// make a slice of statuses with the length we need to return
statuses := make([]*apimodel.Status, 0, amount)
// if there are no prepared posts, just return the empty slice
if t.preparedPosts.data == nil {
t.preparedPosts.data = &list.List{}
}
// iterate through the modified list until we hit the mark we're looking for
var position int
var behindIDMark *list.Element
findMarkLoop:
for e := t.preparedPosts.data.Front(); e != nil; e = e.Next() {
position = position + 1
entry, ok := e.Value.(*preparedPostsEntry)
if !ok {
return nil, errors.New("GetXBehindID: could not parse e as a preparedPostsEntry")
}
if entry.statusID == behindID {
fmt.Printf("\n\n\n GETXBEHINDID: FOUND BEHINDID %s WITH POSITION %d AND CREATEDAT %s \n\n\n", behindID, position, entry.createdAt.String())
behindIDMark = e
break findMarkLoop
}
}
// we didn't find it, so we need to make sure it's indexed and prepared and then try again
if behindIDMark == nil {
if err := t.IndexBehind(behindID, true, amount); err != nil {
return nil, fmt.Errorf("GetXBehindID: error indexing behind and including ID %s", behindID)
}
if err := t.PrepareBehind(behindID, true, amount); err != nil {
return nil, fmt.Errorf("GetXBehindID: error preparing behind and including ID %s", behindID)
}
return t.GetXBehindID(amount, behindID)
}
// make sure we have enough posts prepared behind it to return what we're being asked for
if t.preparedPosts.data.Len() < amount+position {
fmt.Printf("\n\n\n GETXBEHINDID: PREPARED POSTS LENGTH %d WAS LESS THAN AMOUNT %d PLUS POSITION %d", t.preparedPosts.data.Len(), amount, position)
if err := t.PrepareBehind(behindID, false, amount); err != nil {
return nil, err
}
fmt.Printf("\n\n\n GETXBEHINDID: PREPARED POSTS LENGTH IS NOW %d", t.preparedPosts.data.Len())
}
// start serving from the entry right after the mark
var served int
serveloop:
for e := behindIDMark.Next(); e != nil; e = e.Next() {
entry, ok := e.Value.(*preparedPostsEntry)
if !ok {
return nil, errors.New("GetXBehindID: could not parse e as a preparedPostsEntry")
}
fmt.Printf("\n\n\n GETXBEHINDID: SERVING STATUS ID %s WITH CREATEDAT %s \n\n\n", entry.statusID, entry.createdAt.String())
// serve up to the amount requested
statuses = append(statuses, entry.prepared)
served = served + 1
if served >= amount {
break serveloop
}
}
return statuses, nil
}
func (t *timeline) GetXBeforeID(amount int, beforeID string, startFromTop bool) ([]*apimodel.Status, error) {
// make a slice of statuses with the length we need to return
statuses := make([]*apimodel.Status, 0, amount)
if t.preparedPosts.data == nil {
t.preparedPosts.data = &list.List{}
}
// iterate through the modified list until we hit the mark we're looking for
var beforeIDMark *list.Element
findMarkLoop:
for e := t.preparedPosts.data.Front(); e != nil; e = e.Next() {
entry, ok := e.Value.(*preparedPostsEntry)
if !ok {
return nil, errors.New("GetXBeforeID: could not parse e as a preparedPostsEntry")
}
if entry.statusID == beforeID {
beforeIDMark = e
break findMarkLoop
}
}
// we didn't find it, so we need to make sure it's indexed and prepared and then try again
if beforeIDMark == nil {
if err := t.IndexBefore(beforeID, true, amount); err != nil {
return nil, fmt.Errorf("GetXBeforeID: error indexing before and including ID %s", beforeID)
}
if err := t.PrepareBefore(beforeID, true, amount); err != nil {
return nil, fmt.Errorf("GetXBeforeID: error preparing before and including ID %s", beforeID)
}
return t.GetXBeforeID(amount, beforeID, startFromTop)
}
var served int
if startFromTop {
// start serving from the front/top and keep going until we hit mark or get x amount statuses
serveloopFromTop:
for e := t.preparedPosts.data.Front(); e != nil; e = e.Next() {
entry, ok := e.Value.(*preparedPostsEntry)
if !ok {
return nil, errors.New("GetXBeforeID: could not parse e as a preparedPostsEntry")
}
if entry.statusID == beforeID {
break serveloopFromTop
}
// serve up to the amount requested
statuses = append(statuses, entry.prepared)
served = served + 1
if served >= amount {
break serveloopFromTop
}
}
} else if startFromTop {
// start serving from the entry right before the mark
serveloopFromBottom:
for e := beforeIDMark.Prev(); e != nil; e = e.Prev() {
entry, ok := e.Value.(*preparedPostsEntry)
if !ok {
return nil, errors.New("GetXBeforeID: could not parse e as a preparedPostsEntry")
}
// serve up to the amount requested
statuses = append(statuses, entry.prepared)
served = served + 1
if served >= amount {
break serveloopFromBottom
}
}
}
return statuses, nil
}
func (t *timeline) GetXBetweenID(amount int, behindID string, beforeID string) ([]*apimodel.Status, error) {
// make a slice of statuses with the length we need to return
statuses := make([]*apimodel.Status, 0, amount)
// if there are no prepared posts, just return the empty slice
if t.preparedPosts.data == nil {
t.preparedPosts.data = &list.List{}
}
// iterate through the modified list until we hit the mark we're looking for
var position int
var behindIDMark *list.Element
findMarkLoop:
for e := t.preparedPosts.data.Front(); e != nil; e = e.Next() {
position = position + 1
entry, ok := e.Value.(*preparedPostsEntry)
if !ok {
return nil, errors.New("GetXBetweenID: could not parse e as a preparedPostsEntry")
}
if entry.statusID == behindID {
behindIDMark = e
break findMarkLoop
}
}
// we didn't find it
if behindIDMark == nil {
return nil, fmt.Errorf("GetXBetweenID: couldn't find status with ID %s", behindID)
}
// make sure we have enough posts prepared behind it to return what we're being asked for
if t.preparedPosts.data.Len() < amount+position {
if err := t.PrepareBehind(behindID, false, amount); err != nil {
return nil, err
}
}
// start serving from the entry right after the mark
var served int
serveloop:
for e := behindIDMark.Next(); e != nil; e = e.Next() {
entry, ok := e.Value.(*preparedPostsEntry)
if !ok {
return nil, errors.New("GetXBetweenID: could not parse e as a preparedPostsEntry")
}
if entry.statusID == beforeID {
break serveloop
}
// serve up to the amount requested
statuses = append(statuses, entry.prepared)
served = served + 1
if served >= amount {
break serveloop
}
}
return statuses, nil
}

120
internal/timeline/index.go Normal file
View File

@ -0,0 +1,120 @@
package timeline
import (
"fmt"
"time"
)
func (t *timeline) IndexBefore(statusID string, include bool, amount int) error {
// filtered := []*gtsmodel.Status{}
// offsetStatus := statusID
// grabloop:
// for len(filtered) < amount {
// statuses, err := t.db.GetStatusesWhereFollowing(t.accountID, amount, offsetStatus, include, true)
// if err != nil {
// if _, ok := err.(db.ErrNoEntries); !ok {
// return fmt.Errorf("IndexBeforeAndIncluding: error getting statuses from db: %s", err)
// }
// break grabloop // we just don't have enough statuses left in the db so index what we've got and then bail
// }
// for _, s := range statuses {
// relevantAccounts, err := t.db.PullRelevantAccountsFromStatus(s)
// if err != nil {
// continue
// }
// visible, err := t.db.StatusVisible(s, t.account, relevantAccounts)
// if err != nil {
// continue
// }
// if visible {
// filtered = append(filtered, s)
// }
// offsetStatus = s.ID
// }
// }
// for _, s := range filtered {
// if err := t.IndexOne(s.CreatedAt, s.ID); err != nil {
// return fmt.Errorf("IndexBeforeAndIncluding: error indexing status with id %s: %s", s.ID, err)
// }
// }
return nil
}
func (t *timeline) IndexBehind(statusID string, include bool, amount int) error {
// filtered := []*gtsmodel.Status{}
// offsetStatus := statusID
// grabloop:
// for len(filtered) < amount {
// statuses, err := t.db.GetStatusesWhereFollowing(t.accountID, amount, offsetStatus, include, false)
// if err != nil {
// if _, ok := err.(db.ErrNoEntries); !ok {
// return fmt.Errorf("IndexBehindAndIncluding: error getting statuses from db: %s", err)
// }
// break grabloop // we just don't have enough statuses left in the db so index what we've got and then bail
// }
// for _, s := range statuses {
// relevantAccounts, err := t.db.PullRelevantAccountsFromStatus(s)
// if err != nil {
// continue
// }
// visible, err := t.db.StatusVisible(s, t.account, relevantAccounts)
// if err != nil {
// continue
// }
// if visible {
// filtered = append(filtered, s)
// }
// offsetStatus = s.ID
// }
// }
// for _, s := range filtered {
// if err := t.IndexOne(s.CreatedAt, s.ID); err != nil {
// return fmt.Errorf("IndexBehindAndIncluding: error indexing status with id %s: %s", s.ID, err)
// }
// }
return nil
}
func (t *timeline) IndexOneByID(statusID string) error {
return nil
}
func (t *timeline) IndexOne(statusCreatedAt time.Time, statusID string) error {
t.Lock()
defer t.Unlock()
postIndexEntry := &postIndexEntry{
createdAt: statusCreatedAt,
statusID: statusID,
}
return t.postIndex.insertIndexed(postIndexEntry)
}
func (t *timeline) IndexAndPrepareOne(statusCreatedAt time.Time, statusID string) error {
t.Lock()
defer t.Unlock()
postIndexEntry := &postIndexEntry{
createdAt: statusCreatedAt,
statusID: statusID,
}
if err := t.postIndex.insertIndexed(postIndexEntry); err != nil {
return fmt.Errorf("IndexAndPrepareOne: error inserting indexed: %s", err)
}
if err := t.prepare(statusID); err != nil {
return fmt.Errorf("IndexAndPrepareOne: error preparing: %s", err)
}
return nil
}

4
internal/timeline/manager.go
View File

@ -150,7 +150,7 @@ func (m *manager) HomeTimeline(timelineAccountID string, maxID string, sinceID s
} else if maxID != "" {
statuses, err = t.GetXBehindID(limit, maxID)
} else if sinceID != "" {
statuses, err = t.GetXBeforeID(limit, sinceID)
statuses, err = t.GetXBeforeID(limit, sinceID, true)
} else {
statuses, err = t.GetXFromTop(limit)
}
@ -180,7 +180,7 @@ func (m *manager) GetOldestIndexedID(timelineAccountID string) (string, error) {
func (m *manager) PrepareXFromTop(timelineAccountID string, limit int) error {
t := m.getOrCreateTimeline(timelineAccountID)
return t.PrepareXFromTop(limit)
return t.PrepareFromTop(limit)
}
func (m *manager) WipeStatusFromTimeline(timelineAccountID string, statusID string) (int, error) {

22
internal/timeline/postindex.go
View File

@ -16,7 +16,6 @@ type postIndexEntry struct {
}
func (p *postIndex) insertIndexed(i *postIndexEntry) error {
if p.data == nil {
p.data = &list.List{}
}
@ -27,20 +26,33 @@ func (p *postIndex) insertIndexed(i *postIndexEntry) error {
return nil
}
// we need to iterate through the index to make sure we put this post in the appropriate place according to when it was created
var insertMark *list.Element
// We need to iterate through the index to make sure we put this post in the appropriate place according to when it was created.
// We also need to make sure we're not inserting a duplicate post -- this can happen sometimes and it's not nice UX (*shudder*).
for e := p.data.Front(); e != nil; e = e.Next() {
entry, ok := e.Value.(*postIndexEntry)
if !ok {
return errors.New("Remove: could not parse e as a postIndexEntry")
return errors.New("index: could not parse e as a postIndexEntry")
}
// if the post to index is newer than e, insert it before e in the list
if i.createdAt.After(entry.createdAt) {
p.data.InsertBefore(i, e)
if insertMark == nil {
if i.createdAt.After(entry.createdAt) {
insertMark = e
}
}
// make sure we don't insert a duplicate
if entry.statusID == i.statusID {
return nil
}
}
if insertMark != nil {
p.data.InsertBefore(i, insertMark)
return nil
}
// if we reach this point it's the oldest post we've seen so put it at the back
p.data.PushBack(i)
return nil

180
internal/timeline/prepare.go Normal file
View File

@ -0,0 +1,180 @@
package timeline
import (
"errors"
"fmt"
"github.com/superseriousbusiness/gotosocial/internal/db"
"github.com/superseriousbusiness/gotosocial/internal/gtsmodel"
)
func (t *timeline) PrepareBehind(statusID string, include bool, amount int) error {
t.Lock()
defer t.Unlock()
var prepared int
var preparing bool
prepareloop:
for e := t.postIndex.data.Front(); e != nil; e = e.Next() {
entry, ok := e.Value.(*postIndexEntry)
if !ok {
return errors.New("PrepareBehind: could not parse e as a postIndexEntry")
}
if !preparing {
// we haven't hit the position we need to prepare from yet
if entry.statusID == statusID {
preparing = true
if !include {
continue
}
}
}
if preparing {
if err := t.prepare(entry.statusID); err != nil {
// there's been an error
if _, ok := err.(db.ErrNoEntries); !ok {
// it's a real error
return fmt.Errorf("PrepareBehind: error preparing status with id %s: %s", entry.statusID, err)
}
// the status just doesn't exist (anymore) so continue to the next one
continue
}
if prepared == amount {
// we're done
break prepareloop
}
prepared = prepared + 1
}
}
return nil
}
func (t *timeline) PrepareBefore(statusID string, include bool, amount int) error {
t.Lock()
defer t.Unlock()
var prepared int
var preparing bool
prepareloop:
for e := t.postIndex.data.Back(); e != nil; e = e.Prev() {
entry, ok := e.Value.(*postIndexEntry)
if !ok {
return errors.New("PrepareBefore: could not parse e as a postIndexEntry")
}
if !preparing {
// we haven't hit the position we need to prepare from yet
if entry.statusID == statusID {
preparing = true
if !include {
continue
}
}
}
if preparing {
if err := t.prepare(entry.statusID); err != nil {
// there's been an error
if _, ok := err.(db.ErrNoEntries); !ok {
// it's a real error
return fmt.Errorf("PrepareBefore: error preparing status with id %s: %s", entry.statusID, err)
}
// the status just doesn't exist (anymore) so continue to the next one
continue
}
if prepared == amount {
// we're done
break prepareloop
}
prepared = prepared + 1
}
}
return nil
}
func (t *timeline) PrepareFromTop(amount int) error {
t.Lock()
defer t.Unlock()
t.preparedPosts.data.Init()
var prepared int
prepareloop:
for e := t.postIndex.data.Front(); e != nil; e = e.Next() {
entry, ok := e.Value.(*postIndexEntry)
if !ok {
return errors.New("PrepareFromTop: could not parse e as a postIndexEntry")
}
if err := t.prepare(entry.statusID); err != nil {
// there's been an error
if _, ok := err.(db.ErrNoEntries); !ok {
// it's a real error
return fmt.Errorf("PrepareFromTop: error preparing status with id %s: %s", entry.statusID, err)
}
// the status just doesn't exist (anymore) so continue to the next one
continue
}
prepared = prepared + 1
if prepared == amount {
// we're done
break prepareloop
}
}
return nil
}
func (t *timeline) prepare(statusID string) error {
// start by getting the status out of the database according to its indexed ID
gtsStatus := &gtsmodel.Status{}
if err := t.db.GetByID(statusID, gtsStatus); err != nil {
return err
}
// if the account pointer hasn't been set on this timeline already, set it lazily here
if t.account == nil {
timelineOwnerAccount := &gtsmodel.Account{}
if err := t.db.GetByID(t.accountID, timelineOwnerAccount); err != nil {
return err
}
t.account = timelineOwnerAccount
}
// to convert the status we need relevant accounts from it, so pull them out here
relevantAccounts, err := t.db.PullRelevantAccountsFromStatus(gtsStatus)
if err != nil {
return err
}
// check if this is a boost...
var reblogOfStatus *gtsmodel.Status
if gtsStatus.BoostOfID != "" {
s := &gtsmodel.Status{}
if err := t.db.GetByID(gtsStatus.BoostOfID, s); err != nil {
return err
}
reblogOfStatus = s
}
// serialize the status (or, at least, convert it to a form that's ready to be serialized)
apiModelStatus, err := t.tc.StatusToMasto(gtsStatus, relevantAccounts.StatusAuthor, t.account, relevantAccounts.BoostedAccount, relevantAccounts.ReplyToAccount, reblogOfStatus)
if err != nil {
return err
}
// shove it in prepared posts as a prepared posts entry
preparedPostsEntry := &preparedPostsEntry{
createdAt: gtsStatus.CreatedAt,
statusID: statusID,
prepared: apiModelStatus,
}
return t.preparedPosts.insertPrepared(preparedPostsEntry)
}

19
internal/timeline/preparedposts.go
View File

@ -29,7 +29,9 @@ func (p *preparedPosts) insertPrepared(i *preparedPostsEntry) error {
return nil
}
// we need to iterate through the index to make sure we put this post in the appropriate place according to when it was created
var insertMark *list.Element
// We need to iterate through the index to make sure we put this post in the appropriate place according to when it was created.
// We also need to make sure we're not inserting a duplicate post -- this can happen sometimes and it's not nice UX (*shudder*).
for e := p.data.Front(); e != nil; e = e.Next() {
entry, ok := e.Value.(*preparedPostsEntry)
if !ok {
@ -37,12 +39,23 @@ func (p *preparedPosts) insertPrepared(i *preparedPostsEntry) error {
}
// if the post to index is newer than e, insert it before e in the list
if i.createdAt.After(entry.createdAt) {
p.data.InsertBefore(i, e)
if insertMark == nil {
if i.createdAt.After(entry.createdAt) {
insertMark = e
}
}
// make sure we don't insert a duplicate
if entry.statusID == i.statusID {
return nil
}
}
if insertMark != nil {
p.data.InsertBefore(i, insertMark)
return nil
}
// if we reach this point it's the oldest post we've seen so put it at the back
p.data.PushBack(i)
return nil

50
internal/timeline/remove.go Normal file
View File

@ -0,0 +1,50 @@
package timeline
import (
"container/list"
"errors"
)
func (t *timeline) Remove(statusID string) (int, error) {
t.Lock()
defer t.Unlock()
var removed int
// remove entr(ies) from the post index
removeIndexes := []*list.Element{}
if t.postIndex != nil && t.postIndex.data != nil {
for e := t.postIndex.data.Front(); e != nil; e = e.Next() {
entry, ok := e.Value.(*postIndexEntry)
if !ok {
return removed, errors.New("Remove: could not parse e as a postIndexEntry")
}
if entry.statusID == statusID {
removeIndexes = append(removeIndexes, e)
}
}
}
for _, e := range removeIndexes {
t.postIndex.data.Remove(e)
removed = removed + 1
}
// remove entr(ies) from prepared posts
removePrepared := []*list.Element{}
if t.preparedPosts != nil && t.preparedPosts.data != nil {
for e := t.preparedPosts.data.Front(); e != nil; e = e.Next() {
entry, ok := e.Value.(*preparedPostsEntry)
if !ok {
return removed, errors.New("Remove: could not parse e as a preparedPostsEntry")
}
if entry.statusID == statusID {
removePrepared = append(removePrepared, e)
}
}
}
for _, e := range removePrepared {
t.preparedPosts.data.Remove(e)
removed = removed + 1
}
return removed, nil
}

334
internal/timeline/timeline.go
View File

@ -19,9 +19,7 @@
package timeline
import (
"container/list"
"errors"
"fmt"
"sync"
"time"
@ -52,7 +50,7 @@ type Timeline interface {
// This will NOT include the status with the given ID.
//
// This corresponds to an api call to /timelines/home?since_id=WHATEVER
GetXBeforeID(amount int, sinceID string) ([]*apimodel.Status, error)
GetXBeforeID(amount int, sinceID string, startFromTop bool) ([]*apimodel.Status, error)
// GetXBetweenID returns x amount of posts from the given maxID, up to the given id, from newest to oldest.
// This will NOT include the status with the given IDs.
//
@ -80,9 +78,10 @@ type Timeline interface {
*/
// PrepareXFromTop instructs the timeline to prepare x amount of posts from the top of the timeline.
PrepareXFromTop(amount int) error
// PrepareXFromPosition instrucst the timeline to prepare the next amount of entries for serialization, from position onwards.
PrepareXFromPosition(amount int, position int) error
PrepareFromTop(amount int) error
// PrepareBehind instructs the timeline to prepare the next amount of entries for serialization, from position onwards.
// If include is true, then the given status ID will also be prepared, otherwise only entries behind it will be prepared.
PrepareBehind(statusID string, include bool, amount int) error
// IndexOne puts a status into the timeline at the appropriate place according to its 'createdAt' property,
// and then immediately prepares it.
IndexAndPrepareOne(statusCreatedAt time.Time, statusID string) error
@ -124,280 +123,6 @@ func NewTimeline(accountID string, db db.DB, typeConverter typeutils.TypeConvert
}
}
func (t *timeline) PrepareXFromPosition(amount int, desiredPosition int) error {
t.Lock()
defer t.Unlock()
var position int
var prepared int
var preparing bool
for e := t.postIndex.data.Front(); e != nil; e = e.Next() {
entry, ok := e.Value.(*postIndexEntry)
if !ok {
return errors.New("PrepareXFromTop: could not parse e as a postIndexEntry")
}
if !preparing {
// we haven't hit the position we need to prepare from yet
position = position + 1
if position == desiredPosition {
preparing = true
continue
}
} else {
if err := t.prepare(entry.statusID); err != nil {
return fmt.Errorf("PrepareXFromTop: error preparing status with id %s: %s", entry.statusID, err)
}
prepared = prepared + 1
if prepared >= amount {
// we're done
break
}
}
}
return nil
}
func (t *timeline) PrepareXFromTop(amount int) error {
t.Lock()
defer t.Unlock()
t.preparedPosts.data.Init()
var prepared int
for e := t.postIndex.data.Front(); e != nil; e = e.Next() {
entry, ok := e.Value.(*postIndexEntry)
if !ok {
return errors.New("PrepareXFromTop: could not parse e as a postIndexEntry")
}
if err := t.prepare(entry.statusID); err != nil {
return fmt.Errorf("PrepareXFromTop: error preparing status with id %s: %s", entry.statusID, err)
}
prepared = prepared + 1
if prepared >= amount {
// we're done
break
}
}
return nil
}
func (t *timeline) GetXFromTop(amount int) ([]*apimodel.Status, error) {
// make a slice of statuses with the length we need to return
statuses := make([]*apimodel.Status, 0, amount)
// if there are no prepared posts, just return the empty slice
if t.preparedPosts.data == nil {
t.preparedPosts.data = &list.List{}
}
// make sure we have enough posts prepared to return
if t.preparedPosts.data.Len() < amount {
if err := t.PrepareXFromTop(amount); err != nil {
return nil, err
}
}
// work through the prepared posts from the top and return
var served int
for e := t.preparedPosts.data.Front(); e != nil; e = e.Next() {
entry, ok := e.Value.(*preparedPostsEntry)
if !ok {
return nil, errors.New("GetXFromTop: could not parse e as a preparedPostsEntry")
}
statuses = append(statuses, entry.prepared)
served = served + 1
if served >= amount {
break
}
}
return statuses, nil
}
func (t *timeline) GetXBehindID(amount int, behindID string) ([]*apimodel.Status, error) {
// make a slice of statuses with the length we need to return
statuses := make([]*apimodel.Status, 0, amount)
// if there are no prepared posts, just return the empty slice
if t.preparedPosts.data == nil {
t.preparedPosts.data = &list.List{}
}
// find the position of id
var position int
for e := t.preparedPosts.data.Front(); e != nil; e = e.Next() {
entry, ok := e.Value.(*preparedPostsEntry)
if !ok {
return nil, errors.New("GetXBehindID: could not parse e as a preparedPostsEntry")
}
if entry.statusID == behindID {
break
}
position = position + 1
}
// make sure we have enough posts prepared behind it to return what we're being asked for
if t.preparedPosts.data.Len() < amount+position {
if err := t.PrepareXFromPosition(amount, position); err != nil {
return nil, err
}
}
// iterate through the modified list until we hit the fromID again
var serving bool
var served int
for e := t.preparedPosts.data.Front(); e != nil; e = e.Next() {
entry, ok := e.Value.(*preparedPostsEntry)
if !ok {
return nil, errors.New("GetXBehindID: could not parse e as a preparedPostsEntry")
}
if !serving {
// start serving if we've hit the id we're looking for
if entry.statusID == behindID {
serving = true
continue
}
} else {
// serve up to the amount requested
statuses = append(statuses, entry.prepared)
served = served + 1
if served >= amount {
break
}
}
}
return statuses, nil
}
func (t *timeline) GetXBeforeID(amount int, beforeID string) ([]*apimodel.Status, error) {
// make a slice of statuses with the length we need to return
statuses := make([]*apimodel.Status, 0, amount)
// if there are no prepared posts, just return the empty slice
if t.preparedPosts.data == nil {
t.preparedPosts.data = &list.List{}
}
// iterate through the modified list until we hit the fromID again
var served int
serveloop:
for e := t.preparedPosts.data.Front(); e != nil; e = e.Next() {
entry, ok := e.Value.(*preparedPostsEntry)
if !ok {
return nil, errors.New("GetXBeforeID: could not parse e as a preparedPostsEntry")
}
if entry.statusID == beforeID {
// we're good
break serveloop
}
// serve up to the amount requested
statuses = append(statuses, entry.prepared)
served = served + 1
if served >= amount {
break
}
}
return statuses, nil
}
func (t *timeline) GetXBetweenID(amount int, maxID string, sinceID string) ([]*apimodel.Status, error) {
// make a slice of statuses with the length we need to return
statuses := make([]*apimodel.Status, 0, amount)
// if there are no prepared posts, just return the empty slice
if t.preparedPosts.data == nil {
t.preparedPosts.data = &list.List{}
}
return statuses, nil
}
func (t *timeline) IndexOne(statusCreatedAt time.Time, statusID string) error {
t.Lock()
defer t.Unlock()
postIndexEntry := &postIndexEntry{
createdAt: statusCreatedAt,
statusID: statusID,
}
return t.postIndex.insertIndexed(postIndexEntry)
}
func (t *timeline) IndexAndPrepareOne(statusCreatedAt time.Time, statusID string) error {
t.Lock()
defer t.Unlock()
postIndexEntry := &postIndexEntry{
createdAt: statusCreatedAt,
statusID: statusID,
}
if err := t.postIndex.insertIndexed(postIndexEntry); err != nil {
return fmt.Errorf("IndexAndPrepareOne: error inserting indexed: %s", err)
}
if err := t.prepare(statusID); err != nil {
return fmt.Errorf("IndexAndPrepareOne: error preparing: %s", err)
}
return nil
}
func (t *timeline) Remove(statusID string) (int, error) {
t.Lock()
defer t.Unlock()
var removed int
// remove entr(ies) from the post index
removeIndexes := []*list.Element{}
if t.postIndex != nil && t.postIndex.data != nil {
for e := t.postIndex.data.Front(); e != nil; e = e.Next() {
entry, ok := e.Value.(*postIndexEntry)
if !ok {
return removed, errors.New("Remove: could not parse e as a postIndexEntry")
}
if entry.statusID == statusID {
removeIndexes = append(removeIndexes, e)
}
}
}
for _, e := range removeIndexes {
t.postIndex.data.Remove(e)
removed = removed + 1
}
// remove entr(ies) from prepared posts
removePrepared := []*list.Element{}
if t.preparedPosts != nil && t.preparedPosts.data != nil {
for e := t.preparedPosts.data.Front(); e != nil; e = e.Next() {
entry, ok := e.Value.(*preparedPostsEntry)
if !ok {
return removed, errors.New("Remove: could not parse e as a preparedPostsEntry")
}
if entry.statusID == statusID {
removePrepared = append(removePrepared, e)
}
}
}
for _, e := range removePrepared {
t.preparedPosts.data.Remove(e)
removed = removed + 1
}
return removed, nil
}
func (t *timeline) Reset() error {
return nil
}
@ -430,52 +155,3 @@ func (t *timeline) OldestIndexedPostID() (string, error) {
}
return entry.statusID, nil
}
func (t *timeline) prepare(statusID string) error {
// start by getting the status out of the database according to its indexed ID
gtsStatus := &gtsmodel.Status{}
if err := t.db.GetByID(statusID, gtsStatus); err != nil {
return err
}
// if the account pointer hasn't been set on this timeline already, set it lazily here
if t.account == nil {
timelineOwnerAccount := &gtsmodel.Account{}
if err := t.db.GetByID(t.accountID, timelineOwnerAccount); err != nil {
return err
}
t.account = timelineOwnerAccount
}
// to convert the status we need relevant accounts from it, so pull them out here
relevantAccounts, err := t.db.PullRelevantAccountsFromStatus(gtsStatus)
if err != nil {
return err
}
// check if this is a boost...
var reblogOfStatus *gtsmodel.Status
if gtsStatus.BoostOfID != "" {
s := &gtsmodel.Status{}
if err := t.db.GetByID(gtsStatus.BoostOfID, s); err != nil {
return err
}
reblogOfStatus = s
}
// serialize the status (or, at least, convert it to a form that's ready to be serialized)
apiModelStatus, err := t.tc.StatusToMasto(gtsStatus, relevantAccounts.StatusAuthor, t.account, relevantAccounts.BoostedAccount, relevantAccounts.ReplyToAccount, reblogOfStatus)
if err != nil {
return err
}
// shove it in prepared posts as a prepared posts entry
preparedPostsEntry := &preparedPostsEntry{
createdAt: gtsStatus.CreatedAt,
statusID: statusID,
prepared: apiModelStatus,
}
return t.preparedPosts.insertPrepared(preparedPostsEntry)
}