/
persistence.go
466 lines (386 loc) · 11.5 KB
/
persistence.go
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package chat
import (
"database/sql"
"strings"
"time"
"github.com/owncast/owncast/core/chat/events"
"github.com/owncast/owncast/core/data"
"github.com/owncast/owncast/core/user"
"github.com/owncast/owncast/models"
log "github.com/sirupsen/logrus"
)
var _datastore *data.Datastore
const (
maxBacklogHours = 2 // Keep backlog max hours worth of messages
maxBacklogNumber = 50 // Return max number of messages in history request
)
func setupPersistence() {
_datastore = data.GetDatastore()
data.CreateMessagesTable(_datastore.DB)
data.CreateBanIPTable(_datastore.DB)
chatDataPruner := time.NewTicker(5 * time.Minute)
go func() {
runPruner()
for range chatDataPruner.C {
runPruner()
}
}()
}
// SaveUserMessage will save a single chat event to the messages database.
func SaveUserMessage(event events.UserMessageEvent) {
saveEvent(event.ID, &event.User.ID, event.Body, event.Type, event.HiddenAt, event.Timestamp, nil, nil, nil, nil)
}
func saveFederatedAction(event events.FediverseEngagementEvent) {
saveEvent(event.ID, nil, event.Body, event.Type, nil, event.Timestamp, event.Image, &event.Link, &event.UserAccountName, nil)
}
// nolint: unparam
func saveEvent(id string, userID *string, body string, eventType string, hidden *time.Time, timestamp time.Time, image *string, link *string, title *string, subtitle *string) {
defer func() {
_historyCache = nil
}()
tx, err := _datastore.DB.Begin()
if err != nil {
log.Errorln("error saving", eventType, err)
return
}
defer tx.Rollback() // nolint
stmt, err := tx.Prepare("INSERT INTO messages(id, user_id, body, eventType, hidden_at, timestamp, image, link, title, subtitle) values(?, ?, ?, ?, ?, ?, ?, ?, ?, ?)")
if err != nil {
log.Errorln("error saving", eventType, err)
return
}
defer stmt.Close()
if _, err = stmt.Exec(id, userID, body, eventType, hidden, timestamp, image, link, title, subtitle); err != nil {
log.Errorln("error saving", eventType, err)
return
}
if err = tx.Commit(); err != nil {
log.Errorln("error saving", eventType, err)
return
}
}
func makeUserMessageEventFromRowData(row rowData) events.UserMessageEvent {
scopes := ""
if row.userScopes != nil {
scopes = *row.userScopes
}
previousUsernames := []string{}
if row.previousUsernames != nil {
previousUsernames = strings.Split(*row.previousUsernames, ",")
}
displayName := ""
if row.userDisplayName != nil {
displayName = *row.userDisplayName
}
displayColor := 0
if row.userDisplayColor != nil {
displayColor = *row.userDisplayColor
}
createdAt := time.Time{}
if row.userCreatedAt != nil {
createdAt = *row.userCreatedAt
}
isBot := (row.userType != nil && *row.userType == "API")
scopeSlice := strings.Split(scopes, ",")
u := user.User{
ID: *row.userID,
DisplayName: displayName,
DisplayColor: displayColor,
CreatedAt: createdAt,
DisabledAt: row.userDisabledAt,
NameChangedAt: row.userNameChangedAt,
PreviousNames: previousUsernames,
AuthenticatedAt: row.userAuthenticatedAt,
Authenticated: row.userAuthenticatedAt != nil,
Scopes: scopeSlice,
IsBot: isBot,
}
message := events.UserMessageEvent{
Event: events.Event{
Type: row.eventType,
ID: row.id,
Timestamp: row.timestamp,
},
UserEvent: events.UserEvent{
User: &u,
HiddenAt: row.hiddenAt,
},
MessageEvent: events.MessageEvent{
Body: row.body,
RawBody: row.body,
},
}
return message
}
func makeSystemMessageChatEventFromRowData(row rowData) events.SystemMessageEvent {
message := events.SystemMessageEvent{
Event: events.Event{
Type: row.eventType,
ID: row.id,
Timestamp: row.timestamp,
},
MessageEvent: events.MessageEvent{
Body: row.body,
RawBody: row.body,
},
}
return message
}
func makeActionMessageChatEventFromRowData(row rowData) events.ActionEvent {
message := events.ActionEvent{
Event: events.Event{
Type: row.eventType,
ID: row.id,
Timestamp: row.timestamp,
},
MessageEvent: events.MessageEvent{
Body: row.body,
RawBody: row.body,
},
}
return message
}
func makeFederatedActionChatEventFromRowData(row rowData) events.FediverseEngagementEvent {
message := events.FediverseEngagementEvent{
Event: events.Event{
Type: row.eventType,
ID: row.id,
Timestamp: row.timestamp,
},
MessageEvent: events.MessageEvent{
Body: row.body,
RawBody: row.body,
},
Image: row.image,
Link: *row.link,
UserAccountName: *row.title,
}
return message
}
type rowData struct {
id string
userID *string
body string
eventType models.EventType
hiddenAt *time.Time
timestamp time.Time
title *string
subtitle *string
image *string
link *string
userDisplayName *string
userDisplayColor *int
userCreatedAt *time.Time
userDisabledAt *time.Time
previousUsernames *string
userNameChangedAt *time.Time
userAuthenticatedAt *time.Time
userScopes *string
userType *string
}
func getChat(rows *sql.Rows) ([]interface{}, error) {
history := make([]interface{}, 0)
for rows.Next() {
row := rowData{}
// Convert a database row into a chat event
if err := rows.Scan(
&row.id,
&row.userID,
&row.body,
&row.title,
&row.subtitle,
&row.image,
&row.link,
&row.eventType,
&row.hiddenAt,
&row.timestamp,
&row.userDisplayName,
&row.userDisplayColor,
&row.userCreatedAt,
&row.userDisabledAt,
&row.previousUsernames,
&row.userNameChangedAt,
&row.userAuthenticatedAt,
&row.userScopes,
&row.userType,
); err != nil {
return nil, err
}
var message interface{}
switch row.eventType {
case events.MessageSent:
message = makeUserMessageEventFromRowData(row)
case events.SystemMessageSent:
message = makeSystemMessageChatEventFromRowData(row)
case events.ChatActionSent:
message = makeActionMessageChatEventFromRowData(row)
case events.FediverseEngagementFollow:
message = makeFederatedActionChatEventFromRowData(row)
case events.FediverseEngagementLike:
message = makeFederatedActionChatEventFromRowData(row)
case events.FediverseEngagementRepost:
message = makeFederatedActionChatEventFromRowData(row)
}
history = append(history, message)
}
return history, nil
}
var _historyCache *[]interface{}
// GetChatModerationHistory will return all the chat messages suitable for moderation purposes.
func GetChatModerationHistory() []interface{} {
if _historyCache != nil {
return *_historyCache
}
tx, err := _datastore.DB.Begin()
if err != nil {
log.Errorln("error fetching chat moderation history", err)
return nil
}
defer tx.Rollback() // nolint
// Get all messages regardless of visibility
query := "SELECT messages.id, user_id, body, title, subtitle, image, link, eventType, hidden_at, timestamp, display_name, display_color, created_at, disabled_at, previous_names, namechanged_at, authenticated_at, scopes, type FROM messages INNER JOIN users ON messages.user_id = users.id ORDER BY timestamp DESC"
stmt, err := tx.Prepare(query)
if err != nil {
log.Errorln("error fetching chat moderation history", err)
return nil
}
rows, err := stmt.Query()
if err != nil {
log.Errorln("error fetching chat moderation history", err)
return nil
}
defer stmt.Close()
defer rows.Close()
result, err := getChat(rows)
if err != nil {
log.Errorln(err)
log.Errorln("There is a problem enumerating chat message rows. Please report this:", query)
return nil
}
_historyCache = &result
if err = tx.Commit(); err != nil {
log.Errorln("error fetching chat moderation history", err)
return nil
}
return result
}
// GetChatHistory will return all the chat messages suitable for returning as user-facing chat history.
func GetChatHistory() []interface{} {
tx, err := _datastore.DB.Begin()
if err != nil {
log.Errorln("error fetching chat history", err)
return nil
}
defer tx.Rollback() // nolint
// Get all visible messages
query := "SELECT messages.id, messages.user_id, messages.body, messages.title, messages.subtitle, messages.image, messages.link, messages.eventType, messages.hidden_at, messages.timestamp, users.display_name, users.display_color, users.created_at, users.disabled_at, users.previous_names, users.namechanged_at, users.authenticated_at, users.scopes, users.type FROM users JOIN messages ON users.id = messages.user_id WHERE hidden_at IS NULL AND disabled_at IS NULL ORDER BY timestamp DESC LIMIT ?"
stmt, err := tx.Prepare(query)
if err != nil {
log.Errorln("error fetching chat history", err)
return nil
}
rows, err := stmt.Query(maxBacklogNumber)
if err != nil {
log.Errorln("error fetching chat history", err)
return nil
}
defer stmt.Close()
defer rows.Close()
m, err := getChat(rows)
if err != nil {
log.Errorln(err)
log.Errorln("There is a problem enumerating chat message rows. Please report this:", query)
return nil
}
if err = tx.Commit(); err != nil {
log.Errorln("error fetching chat history", err)
return nil
}
// Invert order of messages
for i, j := 0, len(m)-1; i < j; i, j = i+1, j-1 {
m[i], m[j] = m[j], m[i]
}
return m
}
// SetMessageVisibilityForUserID will bulk change the visibility of messages for a user
// and then send out visibility changed events to chat clients.
func SetMessageVisibilityForUserID(userID string, visible bool) error {
defer func() {
_historyCache = nil
}()
tx, err := _datastore.DB.Begin()
if err != nil {
log.Errorln("error while setting message visibility", err)
return nil
}
defer tx.Rollback() // nolint
query := "SELECT messages.id, user_id, body, title, subtitle, image, link, eventType, hidden_at, timestamp, display_name, display_color, created_at, disabled_at, previous_names, namechanged_at, authenticated_at, scopes, type FROM messages INNER JOIN users ON messages.user_id = users.id WHERE user_id IS ?"
stmt, err := tx.Prepare(query)
if err != nil {
log.Errorln("error while setting message visibility", err)
return nil
}
rows, err := stmt.Query(userID)
if err != nil {
log.Errorln("error while setting message visibility", err)
return nil
}
defer stmt.Close()
defer rows.Close()
// Get a list of IDs to send to the connected clients to hide
ids := make([]string, 0)
messages, err := getChat(rows)
if err != nil {
log.Errorln(err)
log.Errorln("There is a problem enumerating chat message rows. Please report this:", query)
return nil
}
if len(messages) == 0 {
return nil
}
for _, message := range messages {
ids = append(ids, message.(events.UserMessageEvent).ID)
}
if err = tx.Commit(); err != nil {
log.Errorln("error while setting message visibility ", err)
return nil
}
// Tell the clients to hide/show these messages.
return SetMessagesVisibility(ids, visible)
}
func saveMessageVisibility(messageIDs []string, visible bool) error {
defer func() {
_historyCache = nil
}()
_datastore.DbLock.Lock()
defer _datastore.DbLock.Unlock()
tx, err := _datastore.DB.Begin()
if err != nil {
return err
}
// nolint:gosec
stmt, err := tx.Prepare("UPDATE messages SET hidden_at=? WHERE id IN (?" + strings.Repeat(",?", len(messageIDs)-1) + ")")
if err != nil {
return err
}
defer stmt.Close()
var hiddenAt *time.Time
if !visible {
now := time.Now()
hiddenAt = &now
} else {
hiddenAt = nil
}
args := make([]interface{}, len(messageIDs)+1)
args[0] = hiddenAt
for i, id := range messageIDs {
args[i+1] = id
}
if _, err = stmt.Exec(args...); err != nil {
return err
}
if err = tx.Commit(); err != nil {
return err
}
return nil
}