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messenger_mailserver.go
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messenger_mailserver.go
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package protocol
import (
"context"
"fmt"
"github.com/pkg/errors"
"go.uber.org/zap"
"github.com/status-im/status-go/connection"
"github.com/status-im/status-go/eth-node/crypto"
"github.com/status-im/status-go/eth-node/types"
"github.com/status-im/status-go/protocol/common"
"github.com/status-im/status-go/protocol/protobuf"
"github.com/status-im/status-go/protocol/transport"
"github.com/status-im/status-go/services/mailservers"
)
// defaultSyncInterval indicates how far back in seconds we should sync a filter
var defaultSyncInterval uint32 = 60 * 60 * 24
// tolerance is how many seconds of potentially out-of-order messages we want to fetch
var tolerance uint32 = 60
func (m *Messenger) shouldSync() (bool, error) {
if m.mailserver == nil || !m.online() {
return false, nil
}
useMailserver, err := m.settings.CanUseMailservers()
if err != nil {
m.logger.Error("failed to get use mailservers", zap.Error(err))
return false, err
}
if !useMailserver {
return false, nil
}
if !m.connectionState.IsExpensive() {
return true, nil
}
syncingOnMobileNetwork, err := m.settings.CanSyncOnMobileNetwork()
if err != nil {
return false, err
}
return syncingOnMobileNetwork, nil
}
func (m *Messenger) scheduleSyncChat(chat *Chat) (bool, error) {
shouldSync, err := m.shouldSync()
if err != nil {
m.logger.Error("failed to get should sync", zap.Error(err))
return false, err
}
if !shouldSync {
return false, nil
}
go func() {
response, err := m.syncChat(chat.ID)
if err != nil {
m.logger.Error("failed to sync chat", zap.Error(err))
return
}
if m.config.messengerSignalsHandler != nil {
m.config.messengerSignalsHandler.MessengerResponse(response)
}
}()
return true, nil
}
func (m *Messenger) scheduleSyncFilter(filter *transport.Filter) {
_, err := m.scheduleSyncFilters([]*transport.Filter{filter})
if err != nil {
m.logger.Error("failed to schedule syncing filters", zap.Error(err))
}
}
func (m *Messenger) scheduleSyncFilters(filters []*transport.Filter) (bool, error) {
shouldSync, err := m.shouldSync()
if err != nil {
m.logger.Error("failed to get shouldSync", zap.Error(err))
return false, err
}
if !shouldSync {
return false, nil
}
go func() {
response, err := m.syncFilters(filters)
if err != nil {
m.logger.Error("failed to sync filter", zap.Error(err))
return
}
if m.config.messengerSignalsHandler != nil {
m.config.messengerSignalsHandler.MessengerResponse(response)
}
}()
return true, nil
}
func (m *Messenger) calculateMailserverTo() uint32 {
return uint32(m.getTimesource().GetCurrentTime() / 1000)
}
func (m *Messenger) filtersForChat(chatID string) ([]*transport.Filter, error) {
chat, ok := m.allChats.Load(chatID)
if !ok {
return nil, ErrChatNotFound
}
var filters []*transport.Filter
if chat.OneToOne() {
// We sync our own topic and any eventual negotiated
publicKeys := []string{common.PubkeyToHex(&m.identity.PublicKey), chatID}
filters = m.transport.FiltersByIdentities(publicKeys)
} else if chat.PrivateGroupChat() {
var publicKeys []string
for _, m := range chat.Members {
publicKeys = append(publicKeys, m.ID)
}
filters = m.transport.FiltersByIdentities(publicKeys)
} else {
filter := m.transport.FilterByChatID(chatID)
if filter == nil {
return nil, errors.New("no filter registered for given chat")
}
filters = []*transport.Filter{filter}
}
return filters, nil
}
func (m *Messenger) topicsForChat(chatID string) ([]types.TopicType, error) {
filters, err := m.filtersForChat(chatID)
if err != nil {
return nil, err
}
var topics []types.TopicType
for _, filter := range filters {
topics = append(topics, filter.Topic)
}
return topics, nil
}
// Assume is a public chat for now
func (m *Messenger) syncChat(chatID string) (*MessengerResponse, error) {
filters, err := m.filtersForChat(chatID)
if err != nil {
return nil, err
}
return m.syncFilters(filters)
}
func (m *Messenger) defaultSyncPeriod() uint32 {
return uint32(m.getTimesource().GetCurrentTime()/1000) - defaultSyncInterval
}
// calculateSyncPeriod caps the sync period to the default
func (m *Messenger) calculateSyncPeriod(period uint32) uint32 {
d := m.defaultSyncPeriod()
if d > period {
return d
}
return period - tolerance
}
// RequestAllHistoricMessages requests all the historic messages for any topic
func (m *Messenger) RequestAllHistoricMessages() (*MessengerResponse, error) {
shouldSync, err := m.shouldSync()
if err != nil {
return nil, err
}
if !shouldSync {
return nil, nil
}
return m.syncFilters(m.transport.Filters())
}
func (m *Messenger) syncFilters(filters []*transport.Filter) (*MessengerResponse, error) {
response := &MessengerResponse{}
topicInfo, err := m.mailserversDatabase.Topics()
if err != nil {
return nil, err
}
topicsData := make(map[string]mailservers.MailserverTopic)
for _, topic := range topicInfo {
topicsData[topic.Topic] = topic
}
batches := make(map[int]MailserverBatch)
to := m.calculateMailserverTo()
var syncedTopics []mailservers.MailserverTopic
for _, filter := range filters {
if !filter.Listen || filter.Ephemeral {
continue
}
var chatID string
// If the filter has an identity, we use it as a chatID, otherwise is a public chat/community chat filter
if len(filter.Identity) != 0 {
chatID = filter.Identity
} else {
chatID = filter.ChatID
}
topicData, ok := topicsData[filter.Topic.String()]
if !ok {
topicData = mailservers.MailserverTopic{
Topic: filter.Topic.String(),
LastRequest: int(m.defaultSyncPeriod()),
}
}
batch, ok := batches[topicData.LastRequest]
if !ok {
from := m.calculateSyncPeriod(uint32(topicData.LastRequest))
batch = MailserverBatch{From: from, To: to}
}
batch.ChatIDs = append(batch.ChatIDs, chatID)
batch.Topics = append(batch.Topics, filter.Topic)
batches[topicData.LastRequest] = batch
// Set last request to the new `to`
topicData.LastRequest = int(to)
syncedTopics = append(syncedTopics, topicData)
}
m.logger.Info("syncing topics", zap.Any("batches", batches))
for _, batch := range batches {
err := m.processMailserverBatch(batch)
if err != nil {
return nil, err
}
}
err = m.mailserversDatabase.AddTopics(syncedTopics)
if err != nil {
return nil, err
}
var messagesToBeSaved []*common.Message
for _, batch := range batches {
for _, id := range batch.ChatIDs {
chat, ok := m.allChats.Load(id)
if !ok || !chat.Active || chat.Timeline() || chat.ProfileUpdates() {
continue
}
gap, err := m.calculateGapForChat(chat, batch.From)
if err != nil {
return nil, err
}
if chat.SyncedFrom == 0 || chat.SyncedFrom > batch.From {
chat.SyncedFrom = batch.From
}
chat.SyncedTo = to
err = m.persistence.SetSyncTimestamps(chat.SyncedFrom, chat.SyncedTo, chat.ID)
if err != nil {
return nil, err
}
response.AddChat(chat)
if gap != nil {
response.AddMessage(gap)
messagesToBeSaved = append(messagesToBeSaved, gap)
}
}
}
if len(messagesToBeSaved) > 0 {
err := m.persistence.SaveMessages(messagesToBeSaved)
if err != nil {
return nil, err
}
}
return response, nil
}
func (m *Messenger) calculateGapForChat(chat *Chat, from uint32) (*common.Message, error) {
// Chat was never synced, no gap necessary
if chat.SyncedTo == 0 {
return nil, nil
}
// If we filled the gap, nothing to do
if chat.SyncedTo >= from {
return nil, nil
}
timestamp := m.getTimesource().GetCurrentTime()
message := &common.Message{
ChatMessage: protobuf.ChatMessage{
ChatId: chat.ID,
Text: "Gap message",
MessageType: protobuf.MessageType_SYSTEM_MESSAGE_GAP,
ContentType: protobuf.ChatMessage_SYSTEM_MESSAGE_GAP,
Clock: uint64(from) * 1000,
Timestamp: timestamp,
},
GapParameters: &common.GapParameters{
From: chat.SyncedTo,
To: from,
},
From: common.PubkeyToHex(&m.identity.PublicKey),
WhisperTimestamp: timestamp,
LocalChatID: chat.ID,
Seen: true,
ID: types.EncodeHex(crypto.Keccak256([]byte(fmt.Sprintf("%s-%d-%d", chat.ID, chat.SyncedTo, from)))),
}
return message, m.persistence.SaveMessages([]*common.Message{message})
}
func (m *Messenger) processMailserverBatch(batch MailserverBatch) error {
m.logger.Info("syncing topic", zap.Any("topic", batch.Topics), zap.Int64("from", int64(batch.From)), zap.Int64("to", int64(batch.To)))
cursor, err := m.transport.SendMessagesRequestForTopics(context.Background(), m.mailserver, batch.From, batch.To, nil, batch.Topics, true)
if err != nil {
return err
}
for len(cursor) != 0 {
m.logger.Info("retrieved cursor", zap.Any("cursor", cursor))
cursor, err = m.transport.SendMessagesRequest(context.Background(), m.mailserver, batch.From, batch.To, cursor, true)
if err != nil {
return err
}
}
m.logger.Info("synced topic", zap.Any("topic", batch.Topics), zap.Int64("from", int64(batch.From)), zap.Int64("to", int64(batch.To)))
return nil
}
type MailserverBatch struct {
From uint32
To uint32
Cursor string
Topics []types.TopicType
ChatIDs []string
}
func (m *Messenger) RequestHistoricMessagesForFilter(
ctx context.Context,
from, to uint32,
cursor []byte,
filter *transport.Filter,
waitForResponse bool,
) ([]byte, error) {
if m.mailserver == nil {
return nil, errors.New("no mailserver selected")
}
return m.transport.SendMessagesRequestForFilter(ctx, m.mailserver, from, to, cursor, filter, waitForResponse)
}
func (m *Messenger) SyncChatFromSyncedFrom(chatID string) (uint32, error) {
topics, err := m.topicsForChat(chatID)
if err != nil {
return 0, nil
}
chat, ok := m.allChats.Load(chatID)
if !ok {
return 0, ErrChatNotFound
}
batch := MailserverBatch{
ChatIDs: []string{chatID},
To: chat.SyncedFrom,
From: chat.SyncedFrom - defaultSyncInterval,
Topics: topics,
}
err = m.processMailserverBatch(batch)
if err != nil {
return 0, err
}
if chat.SyncedFrom == 0 || chat.SyncedFrom > batch.From {
chat.SyncedFrom = batch.From
}
err = m.persistence.SetSyncTimestamps(batch.From, chat.SyncedTo, chat.ID)
if err != nil {
return 0, err
}
return batch.From, nil
}
func (m *Messenger) FillGaps(chatID string, messageIDs []string) error {
messages, err := m.persistence.MessagesByIDs(messageIDs)
if err != nil {
return err
}
_, ok := m.allChats.Load(chatID)
if !ok {
return errors.New("chat not existing")
}
topics, err := m.topicsForChat(chatID)
if err != nil {
return err
}
var lowestFrom, highestTo uint32
for _, message := range messages {
if message.GapParameters == nil {
return errors.New("can't sync non-gap message")
}
if lowestFrom == 0 || lowestFrom > message.GapParameters.From {
lowestFrom = message.GapParameters.From
}
if highestTo < message.GapParameters.To {
highestTo = message.GapParameters.To
}
}
batch := MailserverBatch{
ChatIDs: []string{chatID},
To: highestTo,
From: lowestFrom,
Topics: topics,
}
err = m.processMailserverBatch(batch)
if err != nil {
return err
}
return m.persistence.DeleteMessages(messageIDs)
}
func (m *Messenger) LoadFilters(filters []*transport.Filter) ([]*transport.Filter, error) {
return m.transport.LoadFilters(filters)
}
func (m *Messenger) RemoveFilters(filters []*transport.Filter) error {
return m.transport.RemoveFilters(filters)
}
func (m *Messenger) ConnectionChanged(state connection.State) {
m.connectionState = state
}