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|
package dal
import (
"database/sql"
"embed"
"errors"
"fmt"
"rss_parrot/shared"
"sync"
"time"
"modernc.org/sqlite"
sqlite3 "modernc.org/sqlite/lib"
)
const schemaVer = 8
//go:embed scripts/*
var scripts embed.FS
type IRepo interface {
InitUpdateDb()
Vacuum() error
GetNextId() uint64
AddAccountIfNotExist(account *Account, privKey string) (isNew bool, err error)
DoesAccountExist(user string) (bool, error)
GetPrivKey(user string) (string, error)
GetAccount(user string) (*Account, error)
BruteDeleteAccount(accountId int) error
GetAccountsPage(offset, limit int) ([]*Account, int, error)
AddToot(accountId int, toot *Toot) error
GetToot(statusId string) (*Toot, error)
GetPostCount(user string) (uint, error)
GetTotalPostCount() (uint, error)
GetPostsPage(accountId int, offset, limit int) ([]*FeedPost, error)
GetTootExtracts(accountId int) ([]*Toot, error)
GetFeedLastUpdated(accountId int) (time.Time, error)
UpdateAccountFeedTimes(accountId int, lastUpdated, nextCheckDue time.Time) error
SetFeedFetchState(accountId int, etag, lastModified string, failures int) error
AddFeedPostIfNew(accountId int, post *FeedPost) (isNew bool, err error)
GetAccountToCheck(checkDue time.Time) (*Account, int, error)
GetFollowerCount(user string, onlyApproved bool) (uint, error)
// Returns number of all followers of feeds. Includes unapproved and banned ones, but excludes followers of birb.
GetFeedFollowerCount() (int, error)
GetFollowersByUser(user string, onlyApproved bool) ([]*FollowerInfo, error)
GetFollowersById(accountId int, onlyApproved bool) ([]*FollowerInfo, error)
SetFollowerApproveStatus(user, followerUserUrl string, status int) error
AddFollower(user string, follower *FollowerInfo) error
RemoveFollower(user, followerUserUrl string) error
AddTootQueueItem(tqi *TootQueueItem) error
GetTootQueueItems(aboveId, maxCount int) ([]*TootQueueItem, int, error)
DeleteTootQueueItem(id int) error
PurgePostsAndToots(accountId int, fromBefore time.Time) error
MarkActivityHandled(id string, when time.Time) (alreadyHandled bool, err error)
DeleteHandledActivities(before time.Time) error
// The ledger of feed items, see scripts/create-08.sql.
FindSeenItem(accountId int, guid, linkKey string) (byGuid, byLink bool, err error)
HasFeedPost(accountId int, postGuidHash int64) (bool, error)
AddFeedItems(accountId int, items []*FeedItem, baselined bool) error
GetItemsBaselined(accountId int) (bool, error)
GetDueItems(now time.Time, limit int) ([]*FeedItem, error)
SetItemPublished(id int64) error
GetNextItemDue() (time.Time, bool, error)
GetItemsAt(accountId int, postTime time.Time) ([]*FeedItem, error)
}
type Repo struct {
cfg *shared.Config
logger shared.ILogger
db *sql.DB
muDb sync.RWMutex
muId sync.Mutex
nextId uint64
}
func NewRepo(cfg *shared.Config, logger shared.ILogger) IRepo {
var err error
var db *sql.DB
// https://phiresky.github.io/blog/2020/sqlite-performance-tuning/
// https://www.reddit.com/r/golang/comments/16xswxd/concurrency_when_writing_data_into_sqlite/
//
// The pragmas travel in the DSN because they are per-connection state:
// modernc applies _pragma parameters to every connection the pool opens,
// whereas a db.Exec("PRAGMA …") would only configure one of them.
// synchronous(1) is "normal".
//
// _time_format=sqlite makes the driver write time.Time as
// "2006-01-02 15:04:05.999999999-07:00" (what mattn/go-sqlite3 wrote
// before). The default would be time.Time.String(), which does not sort
// as text, and the queries compare DATETIME columns as text
// (next_check_due<?, handled_at<?, ORDER BY post_time), also against
// rows written by older versions.
//
// No cache=shared: shared-cache mode reports table-lock conflicts as
// SQLITE_LOCKED, which busy_timeout does not retry; WAL already lets
// readers and the writer proceed concurrently.
cstr := "file:%s?mode=rwc" +
"&_pragma=journal_mode(WAL)" +
"&_pragma=synchronous(1)" +
"&_pragma=busy_timeout(5000)" +
"&_time_format=sqlite"
db, err = sql.Open("sqlite", fmt.Sprintf(cstr, cfg.DbFile))
if err != nil {
logger.Errorf("Failed to open/create DB file: %s: %v", cfg.DbFile, err)
panic(err)
}
repo := Repo{
cfg: cfg,
logger: logger,
db: db,
nextId: uint64(time.Now().UnixNano()),
}
return &repo
}
// isUniqueViolation reports whether err is SQLite refusing a row because it
// violates a UNIQUE index (SQLITE_CONSTRAINT_UNIQUE). The driver enables
// extended result codes, so Code() is the extended code.
func isUniqueViolation(err error) bool {
var e *sqlite.Error
return errors.As(err, &e) && e.Code() == sqlite3.SQLITE_CONSTRAINT_UNIQUE
}
func (repo *Repo) GetNextId() uint64 {
repo.muId.Lock()
res := repo.nextId + 1
repo.nextId = res
repo.muId.Unlock()
return res
}
func (repo *Repo) InitUpdateDb() {
dbVer := 0
sysParamsExists := false
var err error
var rows *sql.Rows
rows, err = repo.db.Query("SELECT name FROM sqlite_master WHERE type='table' AND name='sys_params'")
if err != nil {
repo.logger.Errorf("Failed to check if 'sys_params' table exists: %v", err)
panic(err)
}
for rows.Next() {
sysParamsExists = true
}
_ = rows.Close()
if !sysParamsExists {
repo.logger.Printf("Database appears to be empty; current schema version is %d", schemaVer)
} else {
row := repo.db.QueryRow("SELECT val FROM sys_params WHERE name='schema_ver'")
if err = row.Scan(&dbVer); err != nil {
repo.logger.Errorf("Failed to query schema version: %v", err)
panic(err)
}
repo.logger.Printf("Database is at version %d; current schema version is %d", dbVer, schemaVer)
}
for i := dbVer; i < schemaVer; i += 1 {
nextVer := i + 1
fn := fmt.Sprintf("scripts/create-%02d.sql", nextVer)
repo.logger.Printf("Running %s", fn)
var sqlBytes []byte
if sqlBytes, err = scripts.ReadFile(fn); err != nil {
repo.logger.Errorf("Failed to read init script %s: %v", fn, err)
panic(err)
}
sqlStr := string(sqlBytes)
if _, err = repo.db.Exec(sqlStr); err != nil {
repo.logger.Errorf("Failed to execute init script %s: %v", fn, err)
panic(err)
}
//if nextVer == 5 {
// if err = repo.upgrade05(); err != nil {
// repo.logger.Errorf("Failed to execute upgrade code to %d: %v", nextVer, err)
// panic(err)
// }
//}
_, err = repo.db.Exec("UPDATE sys_params SET val=? WHERE name='schema_ver'", nextVer)
if err != nil {
repo.logger.Errorf("Failed to update schema_ver to %d: %v", nextVer, err)
panic(err)
}
}
if dbVer == 0 {
repo.mustAddBuiltInUsers()
}
}
type postToFix struct {
accountId int
postGuidHash int
title string
description string
}
func (repo *Repo) mustAddBuiltInUsers() {
idb := shared.IdBuilder{Host: repo.cfg.Host}
_, err := repo.db.Exec(`INSERT INTO accounts
(created_at, user_url, handle, pubkey, privkey)
VALUES(?, ?, ?, ?, ?)`,
repo.cfg.Birb.Published, idb.UserUrl(repo.cfg.Birb.User),
repo.cfg.Birb.User, repo.cfg.Birb.PubKey, repo.cfg.Birb.PrivKey)
if err != nil {
repo.logger.Errorf("Failed to add built-in user '%s': %v", repo.cfg.Birb.User, err)
panic(err)
}
}
func (repo *Repo) Vacuum() error {
repo.muDb.Lock()
defer repo.muDb.Unlock()
repo.logger.Info("Acquired DB lock for vacuuming")
if _, err := repo.db.Exec(`PRAGMA wal_checkpoint(TRUNCATE)`); err != nil {
return err
}
repo.logger.Info("Executed pre-vacumm checkpoint with truncation")
if _, err := repo.db.Exec(`VACUUM`); err != nil {
return err
}
repo.logger.Info("Executed vacuum command")
_, err := repo.db.Exec(`PRAGMA wal_checkpoint(TRUNCATE)`)
repo.logger.Info("Executed post-vacumm checkpoint with truncation")
return err
}
func (repo *Repo) AddAccountIfNotExist(acct *Account, privKey string) (isNew bool, err error) {
repo.muDb.Lock()
defer repo.muDb.Unlock()
isNew = true
_, err = repo.db.Exec(`INSERT INTO accounts
(created_at, user_url, handle, feed_name, feed_summary, profile_image_url, site_url, feed_url, pubkey, privkey)
VALUES(?, ?, ?, ?, ?, ?, ?, ?, ?, ?)`,
acct.CreatedAt, acct.UserUrl, acct.Handle, acct.FeedName, acct.FeedSummary, acct.ProfileImageUrl,
acct.SiteUrl, acct.FeedUrl, acct.PubKey, privKey)
if err == nil {
return
}
// MySQL: mysql.MySQLError; mysqlErr.Number == 1062
// Duplicate key: account with this handle already exists
if isUniqueViolation(err) {
isNew = false
_, err = repo.getAccount(acct.Handle)
return
}
return
}
func (repo *Repo) DoesAccountExist(user string) (bool, error) {
repo.muDb.RLock()
defer repo.muDb.RUnlock()
row := repo.db.QueryRow(`SELECT COUNT(*) FROM accounts WHERE handle=?`, user)
var err error
var count int
if err = row.Scan(&count); err != nil {
return false, err
}
return count != 0, nil
}
func (repo *Repo) GetAccount(user string) (*Account, error) {
repo.muDb.RLock()
defer repo.muDb.RUnlock()
return repo.getAccount(user)
}
func (repo *Repo) getAccount(user string) (*Account, error) {
row := repo.db.QueryRow(
`SELECT id, created_at, user_url, handle, feed_name, feed_summary, profile_image_url, site_url, feed_url,
feed_last_updated, next_check_due, pubkey
FROM accounts WHERE handle=?`, user)
var err error
var res Account
err = row.Scan(&res.Id, &res.CreatedAt, &res.UserUrl, &res.Handle, &res.FeedName, &res.FeedSummary,
&res.ProfileImageUrl, &res.SiteUrl, &res.FeedUrl, &res.FeedLastUpdated, &res.NextCheckDue, &res.PubKey)
if err != nil {
if errors.Is(err, sql.ErrNoRows) {
return nil, nil
} else {
return nil, err
}
}
return &res, nil
}
func (repo *Repo) BruteDeleteAccount(accountId int) error {
step1 := func() error {
repo.muDb.Lock()
defer repo.muDb.Unlock()
_, err := repo.db.Exec(`DELETE FROM toots WHERE account_id=?`, accountId)
if err != nil {
return err
}
return nil
}
step2 := func() error {
repo.muDb.Lock()
defer repo.muDb.Unlock()
_, err := repo.db.Exec(`DELETE FROM feed_posts WHERE account_id=?`, accountId)
if err != nil {
return err
}
return nil
}
step3 := func() error {
repo.muDb.Lock()
defer repo.muDb.Unlock()
_, err := repo.db.Exec(`DELETE FROM followers WHERE account_id=?`, accountId)
if err != nil {
return err
}
return nil
}
step4 := func() error {
repo.muDb.Lock()
defer repo.muDb.Unlock()
if _, err := repo.db.Exec(`DELETE FROM feed_items WHERE account_id=?`, accountId); err != nil {
return err
}
_, err := repo.db.Exec(`DELETE FROM accounts WHERE id=?`, accountId)
if err != nil {
return err
}
return nil
}
if err := step1(); err != nil {
return err
}
time.Sleep(100 * time.Millisecond)
if err := step2(); err != nil {
return err
}
time.Sleep(100 * time.Millisecond)
if err := step3(); err != nil {
return err
}
time.Sleep(100 * time.Millisecond)
if err := step4(); err != nil {
return err
}
return nil
}
func (repo *Repo) GetAccountsPage(offset, limit int) ([]*Account, int, error) {
repo.muDb.RLock()
defer repo.muDb.RUnlock()
var res []*Account
var total int
var err error
row := repo.db.QueryRow(`SELECT COUNT(*) FROM accounts`)
if err = row.Scan(&total); err != nil {
return nil, 0, err
}
query := `SELECT id, created_at, user_url, handle, feed_name, feed_summary, profile_image_url, site_url, feed_url,
feed_last_updated, next_check_due, pubkey
FROM accounts ORDER BY ID DESC LIMIT ? OFFSET ?`
rows, err := repo.db.Query(query, limit, offset)
if err != nil {
return nil, 0, err
}
defer rows.Close()
for rows.Next() {
a := Account{}
err = rows.Scan(&a.Id, &a.CreatedAt, &a.UserUrl, &a.Handle, &a.FeedName, &a.FeedSummary,
&a.ProfileImageUrl, &a.SiteUrl, &a.FeedUrl, &a.FeedLastUpdated, &a.NextCheckDue, &a.PubKey)
if err = rows.Err(); err != nil {
return nil, 0, err
}
res = append(res, &a)
}
return res, total, nil
}
func (repo *Repo) GetPrivKey(user string) (string, error) {
repo.muDb.RLock()
defer repo.muDb.RUnlock()
row := repo.db.QueryRow(`SELECT privkey FROM accounts WHERE handle=?`, user)
var err error
var res string
err = row.Scan(&res)
if err != nil {
if errors.Is(err, sql.ErrNoRows) {
return "", nil
} else {
return "", err
}
}
return res, nil
}
func (repo *Repo) SetPrivKey(user, privKey string) error {
repo.muDb.Lock()
defer repo.muDb.Unlock()
_, err := repo.db.Exec("UPDATE accounts SET privkey=? WHERE handle=?", privKey, user)
if err != nil {
return err
}
return nil
}
func (repo *Repo) AddToot(accountId int, toot *Toot) error {
repo.muDb.Lock()
defer repo.muDb.Unlock()
_, err := repo.db.Exec(`INSERT INTO toots (account_id, post_guid_hash, tooted_at, status_id, content)
VALUES(?, ?, ?, ?, ?)`,
accountId, toot.PostGuidHash, toot.TootedAt, toot.StatusId, toot.Content)
if err != nil {
return err
}
return nil
}
func (repo *Repo) GetToot(statusId string) (*Toot, error) {
repo.muDb.RLock()
defer repo.muDb.RUnlock()
query := `SELECT post_guid_hash, tooted_at, status_id, content FROM toots WHERE status_id=?`
rows, err := repo.db.Query(query, statusId)
if err != nil {
return nil, err
}
defer rows.Close()
for rows.Next() {
t := Toot{}
err = rows.Scan(&t.PostGuidHash, &t.TootedAt, &t.StatusId, &t.Content)
if err = rows.Err(); err != nil {
return nil, err
}
return &t, nil
}
return nil, nil
}
func (repo *Repo) GetPostCount(user string) (uint, error) {
repo.muDb.RLock()
defer repo.muDb.RUnlock()
row := repo.db.QueryRow(`SELECT COUNT(*) FROM feed_posts JOIN accounts
ON feed_posts.account_id=accounts.id AND accounts.handle=?`, user)
var err error
var count int
if err = row.Scan(&count); err != nil {
return 0, err
}
return uint(count), nil
}
func (repo *Repo) GetTotalPostCount() (uint, error) {
repo.muDb.RLock()
defer repo.muDb.RUnlock()
row := repo.db.QueryRow(`SELECT COUNT(*) FROM feed_posts`)
var err error
var count int
if err = row.Scan(&count); err != nil {
return 0, err
}
return uint(count), nil
}
func (repo *Repo) GetPostsPage(accountId int, offset, limit int) ([]*FeedPost, error) {
repo.muDb.RLock()
defer repo.muDb.RUnlock()
var res []*FeedPost
var err error
query := `SELECT post_guid_hash, post_time, link, title, description
FROM feed_posts WHERE account_id=? ORDER BY post_time DESC LIMIT ? OFFSET ?`
rows, err := repo.db.Query(query, accountId, limit, offset)
if err != nil {
return nil, err
}
defer rows.Close()
for rows.Next() {
p := FeedPost{}
err = rows.Scan(&p.PostGuidHash, &p.PostTime, &p.Link, &p.Title, &p.Description)
if err = rows.Err(); err != nil {
return nil, err
}
res = append(res, &p)
}
return res, nil
}
func (repo *Repo) GetTootExtracts(accountId int) ([]*Toot, error) {
repo.muDb.RLock()
defer repo.muDb.RUnlock()
var res []*Toot
var err error
query := `SELECT post_guid_hash, tooted_at FROM toots WHERE account_id=?`
rows, err := repo.db.Query(query, accountId)
if err != nil {
return nil, err
}
defer rows.Close()
for rows.Next() {
p := Toot{}
err = rows.Scan(&p.PostGuidHash, &p.TootedAt)
if err = rows.Err(); err != nil {
return nil, err
}
res = append(res, &p)
}
return res, nil
}
func (repo *Repo) GetFollowerCount(user string, onlyApproved bool) (uint, error) {
repo.muDb.RLock()
defer repo.muDb.RUnlock()
sql := `SELECT COUNT(*) FROM followers JOIN accounts
ON followers.account_id=accounts.id AND accounts.handle=?`
if onlyApproved {
sql += ` WHERE followers.approve_status=1`
}
row := repo.db.QueryRow(sql, user)
var err error
var count int
if err = row.Scan(&count); err != nil {
return 0, err
}
return uint(count), nil
}
func (repo *Repo) GetFeedFollowerCount() (int, error) {
repo.muDb.RLock()
defer repo.muDb.RUnlock()
row := repo.db.QueryRow(`SELECT COUNT(*) FROM followers WHERE account_id NOT IN
(SELECT id FROM accounts WHERE handle='?');`, repo.cfg.Birb.User)
var err error
var count int
if err = row.Scan(&count); err != nil {
return 0, err
}
return count, nil
}
func (repo *Repo) SetFollowerApproveStatus(user, followerUserUrl string, status int) error {
repo.muDb.Lock()
defer repo.muDb.Unlock()
acct, err := repo.getAccount(user)
if err != nil {
return err
}
_, err = repo.db.Exec(`UPDATE followers SET approve_status=? WHERE account_id=? AND user_url=?`,
status, acct.Id, followerUserUrl)
if err != nil {
return err
}
return nil
}
func (repo *Repo) GetFollowersByUser(user string, onlyApproved bool) ([]*FollowerInfo, error) {
repo.muDb.RLock()
defer repo.muDb.RUnlock()
query := `SELECT followers.request_id, followers.user_url, followers.handle, host, user_inbox, shared_inbox
FROM followers JOIN accounts ON followers.account_id=accounts.id AND accounts.handle=?`
if onlyApproved {
query += ` WHERE followers.approve_status=1`
}
rows, err := repo.db.Query(query, user)
if err != nil {
return nil, err
}
defer rows.Close()
return readGetFollowers(rows)
}
func (repo *Repo) GetFollowersById(accountId int, onlyApproved bool) ([]*FollowerInfo, error) {
repo.muDb.RLock()
defer repo.muDb.RUnlock()
query := `SELECT request_id, user_url, handle, host, user_inbox, shared_inbox FROM followers WHERE account_id=?`
if onlyApproved {
query += ` AND followers.approve_status=1`
}
rows, err := repo.db.Query(query, accountId)
if err != nil {
return nil, err
}
defer rows.Close()
return readGetFollowers(rows)
}
func readGetFollowers(rows *sql.Rows) ([]*FollowerInfo, error) {
var err error
res := make([]*FollowerInfo, 0)
for rows.Next() {
mui := FollowerInfo{}
err = rows.Scan(&mui.RequestId, &mui.UserUrl, &mui.Handle, &mui.Host, &mui.UserInbox, &mui.SharedInbox)
if err != nil {
return nil, err
}
res = append(res, &mui)
}
if err = rows.Err(); err != nil {
return nil, err
}
return res, nil
}
func (repo *Repo) AddFollower(user string, flwr *FollowerInfo) error {
repo.muDb.Lock()
defer repo.muDb.Unlock()
row := repo.db.QueryRow(`SELECT id FROM accounts WHERE handle=?`, user)
var err error
var accountId int
if err = row.Scan(&accountId); err != nil {
return err
}
_, err = repo.db.Exec(`INSERT INTO followers VALUES(?, ?, ?, ?, ?, ?, ?, ?)
ON CONFLICT DO UPDATE SET request_id=excluded.request_id, approve_status=excluded.approve_status`,
accountId, flwr.RequestId, flwr.ApproveStatus, flwr.UserUrl, flwr.Handle, flwr.Host,
flwr.UserInbox, flwr.SharedInbox)
if err != nil {
return err
}
return nil
}
func (repo *Repo) RemoveFollower(user, followerUserUrl string) error {
repo.muDb.Lock()
defer repo.muDb.Unlock()
row := repo.db.QueryRow(`SELECT id FROM accounts WHERE handle=?`, user)
var err error
var accountId int
if err = row.Scan(&accountId); err != nil {
return err
}
_, err = repo.db.Exec(`DELETE FROM followers WHERE account_id=? AND user_url=?`,
accountId, followerUserUrl)
if err != nil {
return err
}
return nil
}
func (repo *Repo) GetFeedLastUpdated(accountId int) (res time.Time, err error) {
repo.muDb.RLock()
defer repo.muDb.RUnlock()
res = time.Time{}
err = nil
row := repo.db.QueryRow("SELECT feed_last_updated FROM accounts WHERE id=?", accountId)
if err = row.Scan(&res); err != nil {
return
}
return
}
func (repo *Repo) UpdateAccountFeedTimes(accountId int, lastUpdated, nextCheckDue time.Time) error {
repo.muDb.Lock()
defer repo.muDb.Unlock()
_, err := repo.db.Exec(`UPDATE accounts SET feed_last_updated=?, next_check_due=?
WHERE id=?`, lastUpdated, nextCheckDue, accountId)
return err
}
func (repo *Repo) SetFeedFetchState(accountId int, etag, lastModified string, failures int) error {
repo.muDb.Lock()
defer repo.muDb.Unlock()
_, err := repo.db.Exec(`UPDATE accounts SET feed_etag=?, feed_last_modified=?, fetch_failures=?
WHERE id=?`, etag, lastModified, failures, accountId)
return err
}
func (repo *Repo) GetAccountToCheck(checkDue time.Time) (*Account, int, error) {
repo.muDb.RLock()
defer repo.muDb.RUnlock()
var nCheckableAccounts int
row := repo.db.QueryRow(`SELECT COUNT(*) FROM accounts WHERE next_check_due<?`, checkDue)
if err := row.Scan(&nCheckableAccounts); err != nil {
return nil, 0, err
}
rows, err := repo.db.Query(`SELECT id, created_at, user_url, handle, feed_name, feed_summary,
profile_image_url, site_url, feed_url, feed_last_updated, next_check_due, pubkey,
feed_etag, feed_last_modified, fetch_failures
FROM accounts WHERE next_check_due<? LIMIT 1`, checkDue)
if err != nil {
return nil, 0, err
}
defer rows.Close()
var acct *Account = nil
for rows.Next() {
res := Account{}
err = rows.Scan(&res.Id, &res.CreatedAt, &res.UserUrl, &res.Handle, &res.FeedName, &res.FeedSummary,
&res.ProfileImageUrl, &res.SiteUrl, &res.FeedUrl, &res.FeedLastUpdated, &res.NextCheckDue, &res.PubKey,
&res.FeedEtag, &res.FeedLastModified, &res.FetchFailures)
if err != nil {
return nil, 0, err
}
if err = rows.Err(); err != nil {
return nil, 0, err
}
acct = &res
}
return acct, nCheckableAccounts, nil
}
func (repo *Repo) AddFeedPostIfNew(accountId int, post *FeedPost) (isNew bool, err error) {
repo.muDb.Lock()
defer repo.muDb.Unlock()
err = nil
_, err = repo.db.Exec(`INSERT INTO feed_posts
(account_id, post_guid_hash, post_time, link, title, description)
VALUES (?, ?, ?, ?, ?, ?)`,
accountId, post.PostGuidHash, post.PostTime, post.Link, post.Title, post.Description)
if err == nil {
isNew = true
return
}
// Duplicate key: feed post for this account+guid_hash already exists
if isUniqueViolation(err) {
isNew = false
err = nil
return
}
return
}
func (repo *Repo) AddTootQueueItem(tqi *TootQueueItem) error {
repo.muDb.Lock()
defer repo.muDb.Unlock()
_, err := repo.db.Exec(`INSERT INTO toot_queue (sending_user, to_inbox, tooted_at, status_id, content)
VALUES(?, ?, ?, ?, ?)`,
tqi.SendingUser, tqi.ToInbox, tqi.TootedAt, tqi.StatusId, tqi.Content)
return err
}
func (repo *Repo) GetTootQueueItems(aboveId, maxCount int) ([]*TootQueueItem, int, error) {
repo.muDb.RLock()
defer repo.muDb.RUnlock()
var itmCount int
row := repo.db.QueryRow(`SELECT COUNT(*) FROM toot_queue`)
if err := row.Scan(&itmCount); err != nil {
return nil, 0, err
}
rows, err := repo.db.Query(`SELECT id, sending_user, to_inbox, tooted_at, status_id, content
FROM toot_queue WHERE id>? ORDER BY id ASC LIMIT ?`, aboveId, maxCount)
if err != nil {
return nil, itmCount, err
}
defer rows.Close()
res := make([]*TootQueueItem, 0, maxCount)
for rows.Next() {
tqi := TootQueueItem{}
err = rows.Scan(&tqi.Id, &tqi.SendingUser, &tqi.ToInbox, &tqi.TootedAt, &tqi.StatusId, &tqi.Content)
if err != nil {
return nil, itmCount, err
}
res = append(res, &tqi)
}
if err = rows.Err(); err != nil {
return nil, itmCount, err
}
return res, itmCount, nil
}
func (repo *Repo) DeleteTootQueueItem(id int) error {
repo.muDb.Lock()
defer repo.muDb.Unlock()
_, err := repo.db.Exec(`DELETE FROM toot_queue WHERE id=?`, id)
return err
}
func (repo *Repo) PurgePostsAndToots(accountId int, fromBefore time.Time) error {
repo.muDb.Lock()
defer repo.muDb.Unlock()
if _, err := repo.db.Exec(`DELETE FROM feed_posts
WHERE account_id=? AND post_time<=?`, accountId, fromBefore); err != nil {
return err
}
if _, err := repo.db.Exec(`DELETE FROM toots
WHERE account_id=? AND tooted_at<=?`, accountId, fromBefore); err != nil {
return err
}
return nil
}
func (repo *Repo) MarkActivityHandled(id string, when time.Time) (alreadyHandled bool, err error) {
repo.muDb.Lock()
defer repo.muDb.Unlock()
alreadyHandled = false
err = nil
_, err = repo.db.Exec(`INSERT INTO handled_activities VALUES (?, ?)`, id, when)
if err == nil {
return
}
// Duplicate key: activity was handled before
if isUniqueViolation(err) {
alreadyHandled = true
err = nil
return
}
return
}
func (repo *Repo) DeleteHandledActivities(before time.Time) error {
repo.muDb.Lock()
defer repo.muDb.Unlock()
_, err := repo.db.Exec(`DELETE FROM handled_activities WHERE handled_at<?`, before)
return err
}
// FindSeenItem looks an item up in the account's ledger, by guid and by link
// key, and reports which of the two matched. Empty values match nothing.
func (repo *Repo) FindSeenItem(accountId int, guid, linkKey string) (byGuid, byLink bool, err error) {
repo.muDb.RLock()
defer repo.muDb.RUnlock()
if guid != "" {
var n int
row := repo.db.QueryRow(`SELECT EXISTS (SELECT 1 FROM feed_items WHERE account_id=? AND guid=?)`,
accountId, guid)
if err = row.Scan(&n); err != nil {
return
}
byGuid = n != 0
}
if linkKey != "" {
var n int
row := repo.db.QueryRow(`SELECT EXISTS (SELECT 1 FROM feed_items WHERE account_id=? AND link_key=?)`,
accountId, linkKey)
if err = row.Scan(&n); err != nil {
return
}
byLink = n != 0
}
return
}
// HasFeedPost reports whether feed_posts has a post of the account with this
// hash.
func (repo *Repo) HasFeedPost(accountId int, postGuidHash int64) (bool, error) {
repo.muDb.RLock()
defer repo.muDb.RUnlock()
var n int
row := repo.db.QueryRow(`SELECT EXISTS (SELECT 1 FROM feed_posts WHERE account_id=? AND post_guid_hash=?)`,
accountId, postGuidHash)
if err := row.Scan(&n); err != nil {
return false, err
}
return n != 0, nil
}
// AddFeedItems adds items to the ledger, in one transaction, and records
// whether the account's feed has now been read into it (items_baselined).
func (repo *Repo) AddFeedItems(accountId int, items []*FeedItem, baselined bool) error {
repo.muDb.Lock()
defer repo.muDb.Unlock()
tx, err := repo.db.Begin()
if err != nil {
return err
}
defer func() { _ = tx.Rollback() }()
for _, itm := range items {
res, err := tx.Exec(`INSERT INTO feed_items
(account_id, guid, link_key, post_guid_hash, post_time, first_seen, status, link, title, description)
VALUES (?, ?, ?, ?, ?, ?, ?, ?, ?, ?)`,
accountId, itm.Guid, itm.LinkKey, itm.PostGuidHash, itm.PostTime.UTC(), itm.FirstSeen.UTC(), itm.Status,
itm.Link, itm.Title, itm.Description)
if err != nil {
return err
}
if itm.Id, err = res.LastInsertId(); err != nil {
return err
}
}
if _, err = tx.Exec(`UPDATE accounts SET items_baselined=? WHERE id=?`, baselined, accountId); err != nil {
return err
}
return tx.Commit()
}
func (repo *Repo) GetItemsBaselined(accountId int) (bool, error) {
repo.muDb.RLock()
defer repo.muDb.RUnlock()
var res bool
row := repo.db.QueryRow(`SELECT items_baselined FROM accounts WHERE id=?`, accountId)
if err := row.Scan(&res); err != nil {
return false, err
}
return res, nil
}
// GetDueItems returns up to limit items, of any account, that are to be
// tooted and whose post_time has come, oldest first.
func (repo *Repo) GetDueItems(now time.Time, limit int) ([]*FeedItem, error) {
repo.muDb.RLock()
defer repo.muDb.RUnlock()
rows, err := repo.db.Query(`SELECT i.id, i.account_id, a.handle, i.guid, i.link_key, i.post_guid_hash,
i.post_time, i.first_seen, i.status, i.link, i.title, i.description
FROM feed_items i JOIN accounts a ON a.id = i.account_id
WHERE i.status=? AND i.post_time<=?
ORDER BY i.post_time, i.id LIMIT ?`, ItemDue, now.UTC(), limit)
if err != nil {
return nil, err
}
defer rows.Close()
var res []*FeedItem
for rows.Next() {
var i FeedItem
if err = rows.Scan(&i.Id, &i.AccountId, &i.Handle, &i.Guid, &i.LinkKey, &i.PostGuidHash,
&i.PostTime, &i.FirstSeen, &i.Status, &i.Link, &i.Title, &i.Description); err != nil {
return nil, err
}
res = append(res, &i)
}
return res, rows.Err()
}
// SetItemPublished marks an item as tooted, and drops the content it no
// longer needs (it is in feed_posts and toots now).
func (repo *Repo) SetItemPublished(id int64) error {
repo.muDb.Lock()
defer repo.muDb.Unlock()
_, err := repo.db.Exec(`UPDATE feed_items SET status=?, link='', title='', description='' WHERE id=?`,
ItemPublished, id)
return err
}
// GetNextItemDue is the earliest post_time of an item still to be tooted.
func (repo *Repo) GetNextItemDue() (time.Time, bool, error) {
repo.muDb.RLock()
defer repo.muDb.RUnlock()
var res time.Time
row := repo.db.QueryRow(`SELECT post_time FROM feed_items WHERE status=? ORDER BY post_time LIMIT 1`, ItemDue)
if err := row.Scan(&res); err != nil {
if errors.Is(err, sql.ErrNoRows) {
return time.Time{}, false, nil
}
return time.Time{}, false, err
}
return res, true, nil
}
// GetItemsAt returns the guid and link key of every item of the account dated
// exactly postTime.
func (repo *Repo) GetItemsAt(accountId int, postTime time.Time) ([]*FeedItem, error) {
repo.muDb.RLock()
defer repo.muDb.RUnlock()
rows, err := repo.db.Query(`SELECT guid, link_key FROM feed_items WHERE account_id=? AND post_time=?`,
accountId, postTime.UTC())
if err != nil {
return nil, err
}
defer rows.Close()
var res []*FeedItem
for rows.Next() {
i := FeedItem{AccountId: accountId, PostTime: postTime}
if err = rows.Scan(&i.Guid, &i.LinkKey); err != nil {
return nil, err
}
res = append(res, &i)
}
return res, rows.Err()
}
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