update timeline with new posts as they come in

internal/processing/account.go

@@ -278,7 +278,7 @@ func (p *processor) AccountFollowersGet(authed *oauth.Auth, targetAccountID stri
 
 	followers := []gtsmodel.Follow{}
 	accounts := []apimodel.Account{}
-	if err := p.db.GetFollowersByAccountID(targetAccountID, &followers); err != nil {
+	if err := p.db.GetFollowersByAccountID(targetAccountID, &followers, false); err != nil {
 		if _, ok := err.(db.ErrNoEntries); ok {
 			return accounts, nil
 		}

internal/processing/fromclientapi.go

@@ -40,6 +40,10 @@ func (p *processor) processFromClientAPI(clientMsg gtsmodel.FromClientAPI) error
 				return errors.New("note was not parseable as *gtsmodel.Status")
 			}
 
+			if err := p.timelineStatus(status); err != nil {
+				return err
+			}
+
 			if err := p.notifyStatus(status); err != nil {
 				return err
 			}
@@ -47,7 +51,6 @@ func (p *processor) processFromClientAPI(clientMsg gtsmodel.FromClientAPI) error
 			if status.VisibilityAdvanced != nil && status.VisibilityAdvanced.Federated {
 				return p.federateStatus(status)
 			}
-			return nil
 		case gtsmodel.ActivityStreamsFollow:
 			// CREATE FOLLOW REQUEST
 			followRequest, ok := clientMsg.GTSModel.(*gtsmodel.FollowRequest)

internal/processing/fromcommon.go

@@ -20,6 +20,8 @@ package processing
 
 import (
 	"fmt"
+	"strings"
+	"sync"
 
 	"github.com/superseriousbusiness/gotosocial/internal/db"
 	"github.com/superseriousbusiness/gotosocial/internal/gtsmodel"
@@ -213,11 +215,88 @@ func (p *processor) notifyAnnounce(status *gtsmodel.Status) error {
 }
 
 func (p *processor) timelineStatus(status *gtsmodel.Status) error {
-	followers := &[]gtsmodel.Follow{}
-	if err := p.db.GetFollowersByAccountID(status.AccountID, followers); err != nil {
-
+	// make sure the author account is pinned onto the status
+	if status.GTSAuthorAccount == nil {
+		a := &gtsmodel.Account{}
+		if err := p.db.GetByID(status.AccountID, a); err != nil {
+			return fmt.Errorf("timelineStatus: error getting author account with id %s: %s", status.AccountID, err)
+		}
+		status.GTSAuthorAccount = a
 	}
 
-	// filter out so we only have the local ones
-	localFollowers := &[]gtsmodel.Account{}
-}
+	// get all relevant accounts here once
+	relevantAccounts, err := p.db.PullRelevantAccountsFromStatus(status)
+	if err != nil {
+		return fmt.Errorf("timelineStatus: error getting relevant accounts from status: %s", err)
+	}
+
+	// get local followers of the account that posted the status
+	followers := []gtsmodel.Follow{}
+	if err := p.db.GetFollowersByAccountID(status.AccountID, &followers, true); err != nil {
+		return fmt.Errorf("timelineStatus: error getting followers for account id %s: %s", status.AccountID, err)
+	}
+
+	// if the poster is local, add a fake entry for them to the followers list so they can see their own status in their timeline
+	if status.GTSAuthorAccount.Domain == "" {
+		followers = append(followers, gtsmodel.Follow{
+			AccountID: status.AccountID,
+		})
+	}
+
+	wg := sync.WaitGroup{}
+	wg.Add(len(followers))
+	errors := make(chan error, len(followers))
+
+	for _, f := range followers {
+		go p.timelineStatusForAccount(status, f.AccountID, relevantAccounts, errors, &wg)
+	}
+
+	// read any errors that come in from the async functions
+	errs := []string{}
+	go func() {
+		for range errors {
+			e := <-errors
+			if e != nil {
+				errs = append(errs, e.Error())
+			}
+		}
+	}()
+
+	// wait til all functions have returned and then close the error channel
+	wg.Wait()
+	close(errors)
+
+	if len(errs) != 0 {
+		// we have some errors
+		return fmt.Errorf("timelineStatus: one or more errors timelining statuses: %s", strings.Join(errs, ";"))
+	}
+
+	// no errors, nice
+	return nil
+}
+
+func (p *processor) timelineStatusForAccount(status *gtsmodel.Status, accountID string, relevantAccounts *gtsmodel.RelevantAccounts, errors chan error, wg *sync.WaitGroup) {
+	defer wg.Done()
+
+	// get the targetAccount
+	timelineAccount := &gtsmodel.Account{}
+	if err := p.db.GetByID(accountID, timelineAccount); err != nil {
+		errors <- fmt.Errorf("timelineStatus: error getting account for timeline with id %s: %s", accountID, err)
+		return
+	}
+
+	// make sure the status is visible
+	visible, err := p.db.StatusVisible(status, status.GTSAuthorAccount, timelineAccount, relevantAccounts)
+	if err != nil {
+		errors <- fmt.Errorf("timelineStatus: error getting visibility for status for timeline with id %s: %s", accountID, err)
+		return
+	}
+
+	if !visible {
+		return
+	}
+
+	if err := p.timelineManager.IngestAndPrepare(status, timelineAccount.ID); err != nil {
+		errors <- fmt.Errorf("initTimelineFor: error ingesting status %s: %s", status.ID, err)
+	}
+}

internal/processing/processor.go

@@ -137,6 +137,8 @@ type Processor interface {
 	// PublicTimelineGet returns statuses from the public/local timeline, with the given filters/parameters.
 	PublicTimelineGet(authed *oauth.Auth, maxID string, sinceID string, minID string, limit int, local bool) ([]*apimodel.Status, ErrorWithCode)
 
+
+
 	/*
 		FEDERATION API-FACING PROCESSING FUNCTIONS
 		These functions are intended to be called when the federating client needs an immediate (ie., synchronous) reply

internal/processing/timeline/manager.go

@@ -51,6 +51,10 @@ type Manager interface {
 	//
 	// It should already be established before calling this function that the status/post actually belongs in the timeline!
 	Ingest(status *gtsmodel.Status, timelineAccountID string) error
+	// IngestAndPrepare takes one status and indexes it into the timeline for the given account ID, and then immediately prepares it for serving.
+	//
+	// It should already be established before calling this function that the status/post actually belongs in the timeline!
+	IngestAndPrepare(status *gtsmodel.Status, timelineAccountID string) error
 	// HomeTimeline returns limit n amount of entries from the home timeline of the given account ID, in descending chronological order.
 	// If maxID is provided, it will return entries from that maxID onwards, inclusive.
 	HomeTimeline(timelineAccountID string, maxID string, sinceID string, minID string, limit int, local bool) ([]*apimodel.Status, error)
@@ -96,6 +100,19 @@ func (m *manager) Ingest(status *gtsmodel.Status, timelineAccountID string) erro
 	return t.IndexOne(status.CreatedAt, status.ID)
 }
 
+func (m *manager) IngestAndPrepare(status *gtsmodel.Status, timelineAccountID string) error {
+	l := m.log.WithFields(logrus.Fields{
+		"func":              "IngestAndPrepare",
+		"timelineAccountID": timelineAccountID,
+		"statusID":          status.ID,
+	})
+
+	t := m.getOrCreateTimeline(timelineAccountID)
+
+	l.Trace("ingesting status")
+	return t.IndexAndPrepareOne(status.CreatedAt, status.ID)
+}
+
 func (m *manager) Remove(statusID string, timelineAccountID string) error {
 	l := m.log.WithFields(logrus.Fields{
 		"func":              "Remove",
@@ -120,7 +137,9 @@ func (m *manager) HomeTimeline(timelineAccountID string, maxID string, sinceID s
 	var err error
 	var statuses []*apimodel.Status
 	if maxID != "" {
-		statuses, err = t.GetXFromID(limit, maxID)
+		statuses, err = t.GetXFromIDOnwards(limit, maxID)
+	} else if sinceID != "" {
+		statuses, err = t.GetXBeforeID(limit, sinceID)
 	} else {
 		statuses, err = t.GetXFromTop(limit)
 	}

internal/processing/timeline/timeline.go

@@ -38,12 +38,19 @@ const (
 type Timeline interface {
 	// GetXFromTop returns x amount of posts from the top of the timeline, from newest to oldest.
 	GetXFromTop(amount int) ([]*apimodel.Status, error)
-	// GetXFromID returns x amount of posts from the given id onwards, from newest to oldest.
+	// GetXFromIDOnwards returns x amount of posts from the given id onwards, from newest to oldest.
 	// This will include the status with the given ID.
-	GetXFromID(amount int, fromID string) ([]*apimodel.Status, error)
+	GetXFromIDOnwards(amount int, fromID string) ([]*apimodel.Status, error)
+
+	// GetXBeforeID returns x amount of posts up to the given id, from newest to oldest.
+	// This will NOT include the status with the given ID.
+	GetXBeforeID(amount int, sinceID string) ([]*apimodel.Status, error)
 
 	// IndexOne puts a status into the timeline at the appropriate place according to its 'createdAt' property.
 	IndexOne(statusCreatedAt time.Time, statusID string) 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
 	// Remove removes a status from the timeline.
 	Remove(statusID string) error
 	// OldestIndexedPostID returns the id of the rearmost (ie., the oldest) indexed post, or an error if something goes wrong.
@@ -177,7 +184,7 @@ func (t *timeline) GetXFromTop(amount int) ([]*apimodel.Status, error) {
 	return statuses, nil
 }
 
-func (t *timeline) GetXFromID(amount int, fromID string) ([]*apimodel.Status, error) {
+func (t *timeline) GetXFromIDOnwards(amount int, fromID string) ([]*apimodel.Status, error) {
 	// make a slice of statuses with the length we need to return
 	statuses := make([]*apimodel.Status, 0, amount)
 
@@ -235,6 +242,40 @@ func (t *timeline) GetXFromID(amount int, fromID string) ([]*apimodel.Status, er
 	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
+servloop:
+	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 servloop
+		}
+
+		// serve up to the amount requested
+		statuses = append(statuses, entry.prepared)
+		served = served + 1
+		if served >= amount {
+			break
+		}
+	}
+
+	return statuses, nil
+}
+
 func (t *timeline) IndexOne(statusCreatedAt time.Time, statusID string) error {
 	t.Lock()
 	defer t.Unlock()
@@ -247,6 +288,26 @@ func (t *timeline) IndexOne(statusCreatedAt time.Time, statusID string) error {
 	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) error {
 	t.Lock()
 	defer t.Unlock()