status-go/protocol/persistence_test.go

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package protocol
import (
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"bytes"
"database/sql"
"fmt"
"math"
"sort"
"strconv"
"strings"
"testing"
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"time"
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"github.com/stretchr/testify/require"
"github.com/status-im/status-go/appdatabase"
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"github.com/status-im/status-go/eth-node/crypto"
"github.com/status-im/status-go/eth-node/types"
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"github.com/status-im/status-go/protocol/common"
"github.com/status-im/status-go/protocol/protobuf"
"github.com/status-im/status-go/protocol/sqlite"
"github.com/status-im/status-go/t/helpers"
)
func TestTableUserMessagesAllFieldsCount(t *testing.T) {
db := sqlitePersistence{}
expected := len(strings.Split(db.tableUserMessagesAllFields(), ","))
require.Equal(t, expected, db.tableUserMessagesAllFieldsCount())
}
func TestSaveMessages(t *testing.T) {
db, err := openTestDB()
require.NoError(t, err)
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p := newSQLitePersistence(db)
for i := 0; i < 10; i++ {
id := strconv.Itoa(i)
err := insertMinimalMessage(p, id)
require.NoError(t, err)
m, err := p.MessageByID(id)
require.NoError(t, err)
require.EqualValues(t, id, m.ID)
}
}
func TestMessagesByIDs(t *testing.T) {
db, err := openTestDB()
require.NoError(t, err)
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p := newSQLitePersistence(db)
var ids []string
for i := 0; i < 10; i++ {
id := strconv.Itoa(i)
err := insertMinimalMessage(p, id)
require.NoError(t, err)
ids = append(ids, id)
}
m, err := p.MessagesByIDs(ids)
require.NoError(t, err)
require.Len(t, m, 10)
}
func TestMessagesByIDs_WithDiscordMessagesPayload(t *testing.T) {
db, err := openTestDB()
require.NoError(t, err)
p := newSQLitePersistence(db)
var ids []string
for i := 0; i < 10; i++ {
id := strconv.Itoa(i)
err := insertMinimalMessage(p, id)
require.NoError(t, err)
err = insertMinimalDiscordMessage(p, id, id)
require.NoError(t, err)
ids = append(ids, id)
}
m, err := p.MessagesByIDs(ids)
require.NoError(t, err)
require.Len(t, m, 10)
for _, _m := range m {
require.NotNil(t, _m.GetDiscordMessage())
}
}
func TestMessageByID(t *testing.T) {
db, err := openTestDB()
require.NoError(t, err)
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p := newSQLitePersistence(db)
id := "1"
err = insertMinimalMessage(p, id)
require.NoError(t, err)
m, err := p.MessageByID(id)
require.NoError(t, err)
require.EqualValues(t, id, m.ID)
}
func TestMessageByID_WithDiscordMessagePayload(t *testing.T) {
db, err := openTestDB()
require.NoError(t, err)
p := newSQLitePersistence(db)
id := "1"
discordMessageID := "2"
err = insertMinimalDiscordMessage(p, id, discordMessageID)
require.NoError(t, err)
m, err := p.MessageByID(id)
require.NoError(t, err)
require.EqualValues(t, id, m.ID)
require.NotNil(t, m.GetDiscordMessage())
require.EqualValues(t, discordMessageID, m.GetDiscordMessage().Id)
require.EqualValues(t, "2", m.GetDiscordMessage().Author.Id)
}
func TestMessageByID_WithDiscordMessageAttachmentPayload(t *testing.T) {
db, err := openTestDB()
require.NoError(t, err)
p := newSQLitePersistence(db)
id := "1"
discordMessageID := "2"
err = insertDiscordMessageWithAttachments(p, id, discordMessageID)
require.NoError(t, err)
m, err := p.MessageByID(id)
require.NoError(t, err)
require.EqualValues(t, id, m.ID)
dm := m.GetDiscordMessage()
require.NotNil(t, dm)
require.EqualValues(t, discordMessageID, dm.Id)
require.NotNil(t, dm.Attachments)
require.Len(t, dm.Attachments, 2)
}
func TestMessagesExist(t *testing.T) {
db, err := openTestDB()
require.NoError(t, err)
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p := newSQLitePersistence(db)
err = insertMinimalMessage(p, "1")
require.NoError(t, err)
result, err := p.MessagesExist([]string{"1"})
require.NoError(t, err)
require.True(t, result["1"])
err = insertMinimalMessage(p, "2")
require.NoError(t, err)
result, err = p.MessagesExist([]string{"1", "2", "3"})
require.NoError(t, err)
require.True(t, result["1"])
require.True(t, result["2"])
require.False(t, result["3"])
}
func TestMessageByChatID(t *testing.T) {
db, err := openTestDB()
require.NoError(t, err)
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p := newSQLitePersistence(db)
chatID := testPublicChatID
count := 1000
pageSize := 50
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var messages []*common.Message
for i := 0; i < count; i++ {
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messages = append(messages, &common.Message{
ID: strconv.Itoa(i),
LocalChatID: chatID,
ChatMessage: &protobuf.ChatMessage{
Clock: uint64(i),
},
From: testPK,
})
// Add some other chats.
if count%5 == 0 {
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messages = append(messages, &common.Message{
ID: strconv.Itoa(count + i),
LocalChatID: "other-chat",
ChatMessage: &protobuf.ChatMessage{
Clock: uint64(i),
},
From: testPK,
})
}
}
// Add some out-of-order message. Add more than page size.
outOfOrderCount := pageSize + 1
allCount := count + outOfOrderCount
for i := 0; i < pageSize+1; i++ {
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messages = append(messages, &common.Message{
ID: strconv.Itoa(count*2 + i),
LocalChatID: chatID,
ChatMessage: &protobuf.ChatMessage{
Clock: uint64(i),
},
From: testPK,
})
}
err = p.SaveMessages(messages)
require.NoError(t, err)
var (
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result []*common.Message
cursor string
iter int
)
for {
var (
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items []*common.Message
err error
)
items, cursor, err = p.MessageByChatID(chatID, cursor, pageSize)
require.NoError(t, err)
result = append(result, items...)
iter++
if len(cursor) == 0 || iter > count {
break
}
}
require.Equal(t, "", cursor) // for loop should exit because of cursor being empty
require.EqualValues(t, math.Ceil(float64(allCount)/float64(pageSize)), iter)
require.Equal(t, len(result), allCount)
require.True(
t,
// Verify descending order.
sort.SliceIsSorted(result, func(i, j int) bool {
return result[i].Clock > result[j].Clock
}),
)
}
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func TestFirstUnseenMessageIDByChatID(t *testing.T) {
db, err := openTestDB()
require.NoError(t, err)
p := newSQLitePersistence(db)
messageID, err := p.FirstUnseenMessageID(testPublicChatID)
require.NoError(t, err)
require.Equal(t, "", messageID)
err = p.SaveMessages([]*common.Message{
{
ID: "1",
LocalChatID: testPublicChatID,
ChatMessage: &protobuf.ChatMessage{
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Clock: 1,
Text: "some-text"},
From: testPK,
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Seen: true,
},
{
ID: "2",
LocalChatID: testPublicChatID,
ChatMessage: &protobuf.ChatMessage{
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Clock: 2,
Text: "some-text"},
From: testPK,
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Seen: false,
},
{
ID: "3",
LocalChatID: testPublicChatID,
ChatMessage: &protobuf.ChatMessage{
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Clock: 3,
Text: "some-text"},
From: testPK,
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Seen: false,
},
})
require.NoError(t, err)
messageID, err = p.FirstUnseenMessageID(testPublicChatID)
require.NoError(t, err)
require.Equal(t, "2", messageID)
}
func TestLatestMessageByChatID(t *testing.T) {
db, err := openTestDB()
require.NoError(t, err)
p := newSQLitePersistence(db)
var ids []string
for i := 0; i < 10; i++ {
id := strconv.Itoa(i)
err := insertMinimalMessage(p, id)
require.NoError(t, err)
ids = append(ids, id)
}
id := strconv.Itoa(10)
err = insertMinimalDeletedMessage(p, id)
require.NoError(t, err)
ids = append(ids, id)
id = strconv.Itoa(11)
err = insertMinimalDeletedForMeMessage(p, id)
require.NoError(t, err)
ids = append(ids, id)
m, err := p.LatestMessageByChatID(testPublicChatID)
require.NoError(t, err)
require.Equal(t, m[0].ID, ids[9])
}
func TestOldestMessageWhisperTimestampByChatID(t *testing.T) {
db, err := openTestDB()
require.NoError(t, err)
p := newSQLitePersistence(db)
chatID := testPublicChatID
_, hasMessage, err := p.OldestMessageWhisperTimestampByChatID(chatID)
require.NoError(t, err)
require.False(t, hasMessage)
var messages []*common.Message
for i := 0; i < 10; i++ {
messages = append(messages, &common.Message{
ID: strconv.Itoa(i),
LocalChatID: chatID,
ChatMessage: &protobuf.ChatMessage{
Clock: uint64(i),
},
WhisperTimestamp: uint64(i + 10),
From: testPK,
})
}
err = p.SaveMessages(messages)
require.NoError(t, err)
timestamp, hasMessage, err := p.OldestMessageWhisperTimestampByChatID(chatID)
require.NoError(t, err)
require.True(t, hasMessage)
require.Equal(t, uint64(10), timestamp)
}
func TestPinMessageByChatID(t *testing.T) {
db, err := openTestDB()
require.NoError(t, err)
p := sqlitePersistence{db: db}
chatID := "chat-with-pinned-messages"
messagesCount := 1000
pageSize := 5
pinnedMessagesCount := 0
var messages []*common.Message
var pinMessages []*common.PinMessage
for i := 0; i < messagesCount; i++ {
messages = append(messages, &common.Message{
ID: strconv.Itoa(i),
LocalChatID: chatID,
ChatMessage: &protobuf.ChatMessage{
Clock: uint64(i),
},
From: testPK,
})
// Pin this message
if i%100 == 0 {
from := testPK
if i == 100 {
from = "them"
}
pinMessage := common.NewPinMessage()
pinMessage.ID = strconv.Itoa(i)
pinMessage.LocalChatID = chatID
pinMessage.From = from
pinMessage.MessageId = strconv.Itoa(i)
pinMessage.Clock = 111
pinMessage.Pinned = true
pinMessages = append(pinMessages, pinMessage)
pinnedMessagesCount++
if i%200 == 0 {
// unpin a message
unpinMessage := common.NewPinMessage()
unpinMessage.ID = strconv.Itoa(i)
unpinMessage.LocalChatID = chatID
unpinMessage.From = testPK
pinMessage.MessageId = strconv.Itoa(i)
unpinMessage.Clock = 333
unpinMessage.Pinned = false
pinMessages = append(pinMessages, unpinMessage)
pinnedMessagesCount--
// pinned before the unpin
pinMessage2 := common.NewPinMessage()
pinMessage2.ID = strconv.Itoa(i)
pinMessage2.LocalChatID = chatID
pinMessage2.From = testPK
pinMessage2.MessageId = strconv.Itoa(i)
pinMessage2.Clock = 222
pinMessage2.Pinned = true
pinMessages = append(pinMessages, pinMessage2)
}
}
// Add some other chats.
if i%5 == 0 {
messages = append(messages, &common.Message{
ID: strconv.Itoa(messagesCount + i),
LocalChatID: "chat-without-pinned-messages",
ChatMessage: &protobuf.ChatMessage{
Clock: uint64(i),
},
From: testPK,
})
}
}
err = p.SaveMessages(messages)
require.NoError(t, err)
err = p.SavePinMessages(pinMessages)
require.NoError(t, err)
var (
result []*common.PinnedMessage
cursor string
iter int
)
for {
var (
items []*common.PinnedMessage
err error
)
items, cursor, err = p.PinnedMessageByChatID(chatID, cursor, pageSize)
require.NoError(t, err)
result = append(result, items...)
iter++
if len(cursor) == 0 || iter > messagesCount {
break
}
}
require.Equal(t, "", cursor) // for loop should exit because of cursor being empty
require.EqualValues(t, pinnedMessagesCount, len(result))
require.EqualValues(t, math.Ceil(float64(pinnedMessagesCount)/float64(pageSize)), iter)
require.True(
t,
// Verify descending order.
sort.SliceIsSorted(result, func(i, j int) bool {
return result[i].Message.Clock > result[j].Message.Clock
}),
)
require.Equal(t, "them", result[len(result)-1].PinnedBy)
for i := 0; i < len(result)-1; i++ {
require.Equal(t, testPK, result[i].PinnedBy)
}
}
func TestMessageReplies(t *testing.T) {
db, err := openTestDB()
require.NoError(t, err)
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p := newSQLitePersistence(db)
chatID := testPublicChatID
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message1 := &common.Message{
ID: "id-1",
LocalChatID: chatID,
ChatMessage: &protobuf.ChatMessage{
Text: "content-1",
Clock: uint64(1),
},
From: "1",
}
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message2 := &common.Message{
ID: "id-2",
LocalChatID: chatID,
ChatMessage: &protobuf.ChatMessage{
Text: "content-2",
Clock: uint64(2),
ResponseTo: "id-1",
},
From: "2",
}
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message3 := &common.Message{
ID: "id-3",
LocalChatID: chatID,
ChatMessage: &protobuf.ChatMessage{
Text: "content-3",
Clock: uint64(3),
ResponseTo: "non-existing",
},
From: "3",
}
// Message that is deleted
message4 := &common.Message{
ID: "id-4",
LocalChatID: chatID,
Deleted: true,
ChatMessage: &protobuf.ChatMessage{
Text: "content-4",
Clock: uint64(4),
},
From: "2",
}
// Message replied to a deleted message. It will not have QuotedMessage info
message5 := &common.Message{
ID: "id-5",
LocalChatID: chatID,
ChatMessage: &protobuf.ChatMessage{
Text: "content-4",
Clock: uint64(5),
ResponseTo: "id-4",
},
From: "3",
}
// messages := []*common.Message{message1, message2, message3}
messages := []*common.Message{message1, message2, message3, message4, message5}
err = p.SaveMessages(messages)
require.NoError(t, err)
retrievedMessages, _, err := p.MessageByChatID(chatID, "", 10)
require.NoError(t, err)
require.Equal(t, "non-existing", retrievedMessages[2].ResponseTo)
require.Nil(t, retrievedMessages[2].QuotedMessage)
require.Equal(t, "id-1", retrievedMessages[3].ResponseTo)
require.Equal(t, &common.QuotedMessage{ID: "id-1", From: "1", Text: "content-1"}, retrievedMessages[3].QuotedMessage)
require.Equal(t, "", retrievedMessages[4].ResponseTo)
require.Nil(t, retrievedMessages[4].QuotedMessage)
// We have a ResponseTo, but no QuotedMessage only gives the ID, From, and Deleted
require.Equal(t, "id-4", retrievedMessages[0].ResponseTo)
require.Equal(t, &common.QuotedMessage{ID: "id-4", Deleted: true, From: "2"}, retrievedMessages[0].QuotedMessage)
}
func TestMessageByChatIDWithTheSameClocks(t *testing.T) {
db, err := openTestDB()
require.NoError(t, err)
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p := newSQLitePersistence(db)
chatID := testPublicChatID
clockValues := []uint64{10, 10, 9, 9, 9, 11, 12, 11, 100000, 6, 4, 5, 5, 5, 5}
count := len(clockValues)
pageSize := 2
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var messages []*common.Message
for i, clock := range clockValues {
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messages = append(messages, &common.Message{
ID: strconv.Itoa(i),
LocalChatID: chatID,
ChatMessage: &protobuf.ChatMessage{
Clock: clock,
},
From: testPK,
})
}
err = p.SaveMessages(messages)
require.NoError(t, err)
var (
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result []*common.Message
cursor string
iter int
)
for {
var (
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items []*common.Message
err error
)
items, cursor, err = p.MessageByChatID(chatID, cursor, pageSize)
require.NoError(t, err)
result = append(result, items...)
iter++
if cursor == "" || iter > count {
break
}
}
require.Empty(t, cursor) // for loop should exit because of cursor being empty
require.Len(t, result, count)
// Verify the order.
expectedClocks := make([]uint64, len(clockValues))
copy(expectedClocks, clockValues)
sort.Slice(expectedClocks, func(i, j int) bool {
return expectedClocks[i] > expectedClocks[j]
})
resultClocks := make([]uint64, 0, len(clockValues))
for _, m := range result {
resultClocks = append(resultClocks, m.Clock)
}
require.EqualValues(t, expectedClocks, resultClocks)
}
func TestDeleteMessageByID(t *testing.T) {
db, err := openTestDB()
require.NoError(t, err)
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p := newSQLitePersistence(db)
id := "1"
err = insertMinimalMessage(p, id)
require.NoError(t, err)
m, err := p.MessageByID(id)
require.NoError(t, err)
require.Equal(t, id, m.ID)
err = p.DeleteMessage(m.ID)
require.NoError(t, err)
_, err = p.MessageByID(id)
require.EqualError(t, err, "record not found")
}
func TestDeleteMessagesByChatID(t *testing.T) {
db, err := openTestDB()
require.NoError(t, err)
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p := newSQLitePersistence(db)
err = insertMinimalMessage(p, "1")
require.NoError(t, err)
err = insertMinimalMessage(p, "2")
require.NoError(t, err)
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m, _, err := p.MessageByChatID(testPublicChatID, "", 10)
require.NoError(t, err)
require.Equal(t, 2, len(m))
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err = p.DeleteMessagesByChatID(testPublicChatID)
require.NoError(t, err)
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m, _, err = p.MessageByChatID(testPublicChatID, "", 10)
require.NoError(t, err)
require.Equal(t, 0, len(m))
}
func TestMarkMessageSeen(t *testing.T) {
chatID := "test-chat"
db, err := openTestDB()
require.NoError(t, err)
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p := newSQLitePersistence(db)
id := "1"
err = insertMinimalMessage(p, id)
require.NoError(t, err)
m, err := p.MessageByID(id)
require.NoError(t, err)
require.False(t, m.Seen)
count, countWithMention, err := p.MarkMessagesSeen(chatID, []string{m.ID})
require.NoError(t, err)
require.Equal(t, uint64(1), count)
require.Equal(t, uint64(0), countWithMention)
m, err = p.MessageByID(id)
require.NoError(t, err)
require.True(t, m.Seen)
}
func TestUpdateMessageOutgoingStatus(t *testing.T) {
db, err := openTestDB()
require.NoError(t, err)
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p := newSQLitePersistence(db)
id := "1"
err = insertMinimalMessage(p, id)
require.NoError(t, err)
err = p.UpdateMessageOutgoingStatus(id, "new-status")
require.NoError(t, err)
m, err := p.MessageByID(id)
require.NoError(t, err)
require.Equal(t, "new-status", m.OutgoingStatus)
}
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func TestMessagesIDsByType(t *testing.T) {
db, err := openTestDB()
require.NoError(t, err)
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p := newSQLitePersistence(db)
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ids, err := p.RawMessagesIDsByType(protobuf.ApplicationMetadataMessage_CHAT_MESSAGE)
require.NoError(t, err)
require.Empty(t, ids)
err = p.SaveRawMessage(minimalRawMessage("chat-message-id", protobuf.ApplicationMetadataMessage_CHAT_MESSAGE))
require.NoError(t, err)
ids, err = p.RawMessagesIDsByType(protobuf.ApplicationMetadataMessage_CHAT_MESSAGE)
require.NoError(t, err)
require.Equal(t, 1, len(ids))
require.Equal(t, "chat-message-id", ids[0])
ids, err = p.RawMessagesIDsByType(protobuf.ApplicationMetadataMessage_EMOJI_REACTION)
require.NoError(t, err)
require.Empty(t, ids)
err = p.SaveRawMessage(minimalRawMessage("emoji-message-id", protobuf.ApplicationMetadataMessage_EMOJI_REACTION))
require.NoError(t, err)
ids, err = p.RawMessagesIDsByType(protobuf.ApplicationMetadataMessage_EMOJI_REACTION)
require.NoError(t, err)
require.Equal(t, 1, len(ids))
require.Equal(t, "emoji-message-id", ids[0])
}
func TestExpiredMessagesIDs(t *testing.T) {
messageResendMaxCount := 30
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db, err := openTestDB()
require.NoError(t, err)
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p := newSQLitePersistence(db)
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ids, err := p.ExpiredMessagesIDs(messageResendMaxCount)
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require.NoError(t, err)
require.Empty(t, ids)
//save expired emoji message
rawEmojiReaction := minimalRawMessage("emoji-message-id", protobuf.ApplicationMetadataMessage_EMOJI_REACTION)
rawEmojiReaction.Sent = false
err = p.SaveRawMessage(rawEmojiReaction)
require.NoError(t, err)
//make sure it appered in expired emoji reactions list
ids, err = p.ExpiredMessagesIDs(messageResendMaxCount)
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require.NoError(t, err)
require.Equal(t, 1, len(ids))
//save non-expired emoji reaction
rawEmojiReaction2 := minimalRawMessage("emoji-message-id2", protobuf.ApplicationMetadataMessage_EMOJI_REACTION)
rawEmojiReaction2.Sent = true
err = p.SaveRawMessage(rawEmojiReaction2)
require.NoError(t, err)
//make sure it didn't appear in expired emoji reactions list
ids, err = p.ExpiredMessagesIDs(messageResendMaxCount)
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require.NoError(t, err)
require.Equal(t, 1, len(ids))
}
func TestDontOverwriteSentStatus(t *testing.T) {
db, err := openTestDB()
require.NoError(t, err)
p := newSQLitePersistence(db)
//save rawMessage
rawMessage := minimalRawMessage("chat-message-id", protobuf.ApplicationMetadataMessage_CHAT_MESSAGE)
rawMessage.Sent = true
err = p.SaveRawMessage(rawMessage)
require.NoError(t, err)
rawMessage.Sent = false
rawMessage.ResendAutomatically = true
err = p.SaveRawMessage(rawMessage)
require.NoError(t, err)
m, err := p.RawMessageByID(rawMessage.ID)
require.NoError(t, err)
require.True(t, m.Sent)
require.True(t, m.ResendAutomatically)
}
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func TestPersistenceEmojiReactions(t *testing.T) {
db, err := openTestDB()
require.NoError(t, err)
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p := newSQLitePersistence(db)
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// reverse order as we use DESC
id1 := "1"
id2 := "2"
id3 := "3"
from1 := "from-1"
from2 := "from-2"
from3 := "from-3"
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chatID := testPublicChatID
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err = insertMinimalMessage(p, id1)
require.NoError(t, err)
err = insertMinimalMessage(p, id2)
require.NoError(t, err)
err = insertMinimalMessage(p, id3)
require.NoError(t, err)
// Insert normal emoji reaction
require.NoError(t, p.SaveEmojiReaction(&EmojiReaction{
EmojiReaction: &protobuf.EmojiReaction{
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Clock: 1,
MessageId: id3,
ChatId: chatID,
Type: protobuf.EmojiReaction_SAD,
},
LocalChatID: chatID,
From: from1,
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}))
// Insert retracted emoji reaction
require.NoError(t, p.SaveEmojiReaction(&EmojiReaction{
EmojiReaction: &protobuf.EmojiReaction{
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Clock: 1,
MessageId: id3,
ChatId: chatID,
Type: protobuf.EmojiReaction_SAD,
Retracted: true,
},
LocalChatID: chatID,
From: from2,
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}))
// Insert retracted emoji reaction out of pagination
require.NoError(t, p.SaveEmojiReaction(&EmojiReaction{
EmojiReaction: &protobuf.EmojiReaction{
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Clock: 1,
MessageId: id1,
ChatId: chatID,
Type: protobuf.EmojiReaction_SAD,
},
LocalChatID: chatID,
From: from2,
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}))
// Insert retracted emoji reaction out of pagination
require.NoError(t, p.SaveEmojiReaction(&EmojiReaction{
EmojiReaction: &protobuf.EmojiReaction{
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Clock: 1,
MessageId: id1,
ChatId: chatID,
Type: protobuf.EmojiReaction_SAD,
},
LocalChatID: chatID,
From: from3,
}))
// Wrong local chat id
require.NoError(t, p.SaveEmojiReaction(&EmojiReaction{
EmojiReaction: &protobuf.EmojiReaction{
Clock: 1,
MessageId: id1,
ChatId: chatID,
Type: protobuf.EmojiReaction_LOVE,
},
LocalChatID: "wrong-chat-id",
From: from3,
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}))
reactions, err := p.EmojiReactionsByChatID(chatID, "", 1)
require.NoError(t, err)
require.Len(t, reactions, 1)
require.Equal(t, id3, reactions[0].MessageId)
// Try with a cursor
_, cursor, err := p.MessageByChatID(chatID, "", 1)
require.NoError(t, err)
reactions, err = p.EmojiReactionsByChatID(chatID, cursor, 2)
require.NoError(t, err)
require.Len(t, reactions, 2)
require.Equal(t, id1, reactions[0].MessageId)
require.Equal(t, id1, reactions[1].MessageId)
}
func openTestDB() (*sql.DB, error) {
db, err := helpers.SetupTestMemorySQLDB(appdatabase.DbInitializer{})
if err != nil {
return nil, err
}
return db, sqlite.Migrate(db)
}
func insertMinimalMessage(p *sqlitePersistence, id string) error {
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return p.SaveMessages([]*common.Message{{
ID: id,
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LocalChatID: testPublicChatID,
ChatMessage: &protobuf.ChatMessage{Text: "some-text"},
From: testPK,
}})
}
func insertMinimalDeletedMessage(p *sqlitePersistence, id string) error {
return p.SaveMessages([]*common.Message{{
ID: id,
Deleted: true,
LocalChatID: testPublicChatID,
ChatMessage: &protobuf.ChatMessage{Text: "some-text"},
From: testPK,
}})
}
func insertMinimalDeletedForMeMessage(p *sqlitePersistence, id string) error {
return p.SaveMessages([]*common.Message{{
ID: id,
DeletedForMe: true,
LocalChatID: testPublicChatID,
ChatMessage: &protobuf.ChatMessage{Text: "some-text"},
From: testPK,
}})
}
func insertDiscordMessageWithAttachments(p *sqlitePersistence, id string, discordMessageID string) error {
err := insertMinimalDiscordMessage(p, id, discordMessageID)
if err != nil {
return err
}
attachment := &protobuf.DiscordMessageAttachment{
Id: "1",
MessageId: discordMessageID,
Url: "https://does-not-exist.com",
Payload: []byte{1, 2, 3, 4},
}
attachment2 := &protobuf.DiscordMessageAttachment{
Id: "2",
MessageId: discordMessageID,
Url: "https://does-not-exist.com",
Payload: []byte{5, 6, 7, 8},
}
return p.SaveDiscordMessageAttachments([]*protobuf.DiscordMessageAttachment{
attachment,
attachment2,
})
}
func insertMinimalDiscordMessage(p *sqlitePersistence, id string, discordMessageID string) error {
discordMessage := &protobuf.DiscordMessage{
Id: discordMessageID,
Type: "Default",
Timestamp: "123456",
Content: "This is the message",
Author: &protobuf.DiscordMessageAuthor{
Id: "2",
},
Reference: &protobuf.DiscordMessageReference{},
}
err := p.SaveDiscordMessage(discordMessage)
if err != nil {
return err
}
return p.SaveMessages([]*common.Message{{
ID: id,
LocalChatID: testPublicChatID,
From: testPK,
ChatMessage: &protobuf.ChatMessage{
Text: "some-text",
ContentType: protobuf.ChatMessage_DISCORD_MESSAGE,
ChatId: testPublicChatID,
Payload: &protobuf.ChatMessage_DiscordMessage{
DiscordMessage: discordMessage,
},
},
}})
}
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func minimalRawMessage(id string, messageType protobuf.ApplicationMetadataMessage_Type) *common.RawMessage {
return &common.RawMessage{
ID: id,
LocalChatID: "test-chat",
MessageType: messageType,
}
}
// Regression test making sure that if audio_duration_ms is null, no error is thrown
func TestMessagesAudioDurationMsNull(t *testing.T) {
db, err := openTestDB()
require.NoError(t, err)
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p := newSQLitePersistence(db)
id := "message-id-1"
err = insertMinimalMessage(p, id)
require.NoError(t, err)
_, err = p.db.Exec("UPDATE user_messages SET audio_duration_ms = NULL")
require.NoError(t, err)
m, err := p.MessagesByIDs([]string{id})
require.NoError(t, err)
require.Len(t, m, 1)
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m, _, err = p.MessageByChatID(testPublicChatID, "", 10)
require.NoError(t, err)
require.Len(t, m, 1)
}
func TestSaveChat(t *testing.T) {
db, err := openTestDB()
require.NoError(t, err)
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p := newSQLitePersistence(db)
chat := CreatePublicChat("test-chat", &testTimeSource{})
chat.LastMessage = common.NewMessage()
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err = p.SaveChat(*chat)
require.NoError(t, err)
retrievedChat, err := p.Chat(chat.ID)
require.NoError(t, err)
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require.Equal(t, chat, retrievedChat)
}
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func TestSaveMentions(t *testing.T) {
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chatID := testPublicChatID
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db, err := openTestDB()
require.NoError(t, err)
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p := newSQLitePersistence(db)
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key, err := crypto.GenerateKey()
require.NoError(t, err)
pkString := types.EncodeHex(crypto.FromECDSAPub(&key.PublicKey))
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message := common.Message{
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ID: "1",
LocalChatID: chatID,
ChatMessage: &protobuf.ChatMessage{Text: "some-text"},
From: testPK,
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Mentions: []string{pkString},
}
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err = p.SaveMessages([]*common.Message{&message})
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require.NoError(t, err)
retrievedMessages, _, err := p.MessageByChatID(chatID, "", 10)
require.NoError(t, err)
require.Len(t, retrievedMessages, 1)
require.Len(t, retrievedMessages[0].Mentions, 1)
require.Equal(t, retrievedMessages[0].Mentions, message.Mentions)
}
func TestSqlitePersistence_GetWhenChatIdentityLastPublished(t *testing.T) {
db, err := openTestDB()
require.NoError(t, err)
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p := newSQLitePersistence(db)
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2020-11-24 23:16:19 +00:00
chatID := "0xabcd1234"
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hash := []byte{0x1}
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now := time.Now().Unix()
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err = p.SaveWhenChatIdentityLastPublished(chatID, hash)
require.NoError(t, err)
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ts, actualHash, err := p.GetWhenChatIdentityLastPublished(chatID)
require.NoError(t, err)
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// Check that the save happened in the last 2 seconds
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diff := ts - now
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require.LessOrEqual(t, diff, int64(2))
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require.True(t, bytes.Equal(hash, actualHash))
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// Require unsaved values to be zero
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ts2, actualHash2, err := p.GetWhenChatIdentityLastPublished("0xdeadbeef")
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require.NoError(t, err)
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require.Exactly(t, int64(0), ts2)
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require.Nil(t, actualHash2)
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}
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func TestSaveContactChatIdentity(t *testing.T) {
db, err := openTestDB()
require.NoError(t, err)
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p := newSQLitePersistence(db)
key, err := crypto.GenerateKey()
require.NoError(t, err)
contactID := types.EncodeHex(crypto.FromECDSAPub(&key.PublicKey))
err = p.SaveContact(&Contact{ID: contactID}, nil)
require.NoError(t, err)
jpegType := []byte{0xff, 0xd8, 0xff, 0x1}
identityImages := make(map[string]*protobuf.IdentityImage)
identityImages["large"] = &protobuf.IdentityImage{
Payload: jpegType,
SourceType: protobuf.IdentityImage_RAW_PAYLOAD,
ImageType: protobuf.ImageType_PNG,
}
identityImages["small"] = &protobuf.IdentityImage{
Payload: jpegType,
SourceType: protobuf.IdentityImage_RAW_PAYLOAD,
ImageType: protobuf.ImageType_PNG,
}
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toArrayOfPointers := func(array []protobuf.SocialLink) (result []*protobuf.SocialLink) {
result = make([]*protobuf.SocialLink, len(array))
for i := range array {
result[i] = &array[i]
}
return
}
chatIdentity := &protobuf.ChatIdentity{
Clock: 1,
Images: identityImages,
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SocialLinks: toArrayOfPointers([]protobuf.SocialLink{
{
Text: "Personal Site",
Url: "status.im",
},
{
Text: "Twitter",
Url: "Status_ico",
},
}),
}
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clockUpdated, imagesUpdated, err := p.SaveContactChatIdentity(contactID, chatIdentity)
require.NoError(t, err)
require.True(t, clockUpdated)
require.True(t, imagesUpdated)
// Save again same clock and data
clockUpdated, imagesUpdated, err = p.SaveContactChatIdentity(contactID, chatIdentity)
require.NoError(t, err)
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require.False(t, clockUpdated)
require.False(t, imagesUpdated)
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// Save again newer clock and no images
chatIdentity.Clock = 2
chatIdentity.Images = make(map[string]*protobuf.IdentityImage)
clockUpdated, imagesUpdated, err = p.SaveContactChatIdentity(contactID, chatIdentity)
require.NoError(t, err)
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require.True(t, clockUpdated)
require.False(t, imagesUpdated)
contacts, err := p.Contacts()
require.NoError(t, err)
require.Len(t, contacts, 1)
require.Len(t, contacts[0].Images, 2)
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require.Len(t, contacts[0].SocialLinks, 2)
require.Equal(t, "Personal Site", contacts[0].SocialLinks[0].Text)
require.Equal(t, "status.im", contacts[0].SocialLinks[0].URL)
require.Equal(t, "Twitter", contacts[0].SocialLinks[1].Text)
require.Equal(t, "Status_ico", contacts[0].SocialLinks[1].URL)
}
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func TestSaveLinks(t *testing.T) {
chatID := testPublicChatID
db, err := openTestDB()
require.NoError(t, err)
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p := newSQLitePersistence(db)
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require.NoError(t, err)
message := common.Message{
ID: "1",
LocalChatID: chatID,
ChatMessage: &protobuf.ChatMessage{Text: "some-text"},
From: testPK,
Links: []string{"https://github.com/status-im/status-mobile"},
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}
err = p.SaveMessages([]*common.Message{&message})
require.NoError(t, err)
retrievedMessages, _, err := p.MessageByChatID(chatID, "", 10)
require.NoError(t, err)
require.Len(t, retrievedMessages, 1)
require.Len(t, retrievedMessages[0].Links, 1)
require.Equal(t, retrievedMessages[0].Links, message.Links)
URL unfurling (initial implementation) (#3471) This is the initial implementation for the new URL unfurling requirements. The most important one is that only the message sender will pay the privacy cost for unfurling and extracting metadata from websites. Once the message is sent, the unfurled data will be stored at the protocol level and receivers will just profit and happily decode the metadata to render it. Further development of this URL unfurling capability will be mostly guided by issues created on clients. For the moment in status-mobile: https://github.com/status-im/status-mobile/labels/url-preview - https://github.com/status-im/status-mobile/issues/15918 - https://github.com/status-im/status-mobile/issues/15917 - https://github.com/status-im/status-mobile/issues/15910 - https://github.com/status-im/status-mobile/issues/15909 - https://github.com/status-im/status-mobile/issues/15908 - https://github.com/status-im/status-mobile/issues/15906 - https://github.com/status-im/status-mobile/issues/15905 ### Terminology In the code, I've tried to stick to the word "unfurl URL" to really mean the process of extracting metadata from a website, sort of lower level. I use "link preview" to mean a higher level structure which is enriched by unfurled data. "link preview" is also how designers refer to it. ### User flows 1. Carol needs to see link previews while typing in the chat input field. Notice from the diagram nothing is persisted and that status-go endpoints are essentially stateless. ``` #+begin_src plantuml :results verbatim Client->>Server: Call wakuext_getTextURLs Server-->>Client: Normalized URLs Client->>Client: Render cached unfurled URLs Client->>Server: Unfurl non-cached URLs.\nCall wakuext_unfurlURLs Server->>Website: Fetch metadata Website-->>Server: Metadata (thumbnail URL, title, etc) Server->>Website: Fetch thumbnail Server->>Website: Fetch favicon Website-->>Server: Favicon bytes Website-->>Server: Thumbnail bytes Server->>Server: Decode & process images Server-->>Client: Unfurled data (thumbnail data URI, etc) #+end_src ``` ``` ,------. ,------. ,-------. |Client| |Server| |Website| `--+---' `--+---' `---+---' | Call wakuext_getTextURLs | | | ---------------------------------------> | | | | | Normalized URLs | | | <- - - - - - - - - - - - - - - - - - - - | | | | |----. | | | | Render cached unfurled URLs | | |<---' | | | | | | Unfurl non-cached URLs. | | | Call wakuext_unfurlURLs | | | ---------------------------------------> | | | | | | Fetch metadata | | | ------------------------------------> | | | | | Metadata (thumbnail URL, title, etc)| | | <- - - - - - - - - - - - - - - - - - | | | | | Fetch thumbnail | | | ------------------------------------> | | | | | Fetch favicon | | | ------------------------------------> | | | | | Favicon bytes | | | <- - - - - - - - - - - - - - - - - - | | | | | Thumbnail bytes | | | <- - - - - - - - - - - - - - - - - - | | | | |----. | | | | Decode & process images | | |<---' | | | | | Unfurled data (thumbnail data URI, etc)| | | <- - - - - - - - - - - - - - - - - - - - | ,--+---. ,--+---. ,---+---. |Client| |Server| |Website| `------' `------' `-------' ``` 2. Carol sends the text message with link previews in the RPC request wakuext_sendChatMessages. status-go assumes the link previews are good because it can't and shouldn't attempt to re-unfurl them. ``` #+begin_src plantuml :results verbatim Client->>Server: Call wakuext_sendChatMessages Server->>Server: Transform link previews to\nbe proto-marshalled Server->DB: Write link previews serialized as JSON Server-->>Client: Updated message response #+end_src ``` ``` ,------. ,------. ,--. |Client| |Server| |DB| `--+---' `--+---' `+-' | Call wakuext_sendChatMessages| | | -----------------------------> | | | | | |----. | | | | Transform link previews to | | |<---' be proto-marshalled | | | | | | | | | Write link previews serialized as JSON| | | --------------------------------------> | | | | Updated message response | | | <- - - - - - - - - - - - - - - | ,--+---. ,--+---. ,+-. |Client| |Server| |DB| `------' `------' `--' ``` 3. The message was sent over waku and persisted locally in Carol's device. She should now see the link previews in the chat history. There can be many link previews shared by other chat members, therefore it is important to serve the assets via the media server to avoid overloading the ReactNative bridge with lots of big JSON payloads containing base64 encoded data URIs (maybe this concern is meaningless for desktop). When a client is rendering messages with link previews, they will have the field linkPreviews, and the thumbnail URL will point to the local media server. ``` #+begin_src plantuml :results verbatim Client->>Server: GET /link-preview/thumbnail (media server) Server->>DB: Read from user_messages.unfurled_links Server->Server: Unmarshal JSON Server-->>Client: HTTP Content-Type: image/jpeg/etc #+end_src ``` ``` ,------. ,------. ,--. |Client| |Server| |DB| `--+---' `--+---' `+-' | GET /link-preview/thumbnail (media server)| | | ------------------------------------------> | | | | | | Read from user_messages.unfurled_links| | | --------------------------------------> | | | | |----. | | | | Unmarshal JSON | | |<---' | | | | | HTTP Content-Type: image/jpeg/etc | | | <- - - - - - - - - - - - - - - - - - - - - | ,--+---. ,--+---. ,+-. |Client| |Server| |DB| `------' `------' `--' ``` ### Some limitations of the current implementation The following points will become separate issues in status-go that I'll work on over the next couple weeks. In no order of importance: - Improve how multiple links are fetched; retries on failure and testing how unfurling behaves around the timeout limits (deterministically, not by making real HTTP calls as I did). https://github.com/status-im/status-go/issues/3498 - Unfurl favicons and store them in the protobuf too. - For this PR, I added unfurling support only for websites with OpenGraph https://ogp.me/ meta tags. Other unfurlers will be implemented on demand. The next one will probably be for oEmbed https://oembed.com/, the protocol supported by YouTube, for example. - Resize and/or compress thumbnails (and favicons). Often times, thumbnails are huge for the purposes of link previews. There is already support for compressing JPEGs in status-go, but I prefer to work with compression in a separate PR because I'd like to also solve the problem for PNGs (probably convert them to JPEGs, plus compress them). This would be a safe choice for thumbnails, favicons not so much because transparency is desirable. - Editing messages is not yet supported. - I haven't coded any artificial limit on the number of previews or on the size of the thumbnail payload. This will be done in a separate issue. I have heard the ideal solution may be to split messages into smaller chunks of ~125 KiB because of libp2p, but that might be too complicated at this stage of the product (?). - Link preview deletion. - For the moment, OpenGraph metadata is extracted by requesting data for the English language (and fallback to whatever is available). In the future, we'll want to unfurl by respecting the user's local device language. Some websites, like GoDaddy, are already localized based on the device's IP, but many aren't. - The website's description text should be limited by a certain number of characters, especially because it's outside our control. Exactly how much has not been decided yet, so it'll be done separately. - URL normalization can be tricky, so I implemented only the basics to help with caching. For example, the url https://status.im and HTTPS://status.im are considered identical. Also, a URL is considered valid for unfurling if its TLD exists according to publicsuffix.EffectiveTLDPlusOne. This was essential, otherwise the default Go url.Parse approach would consider many invalid URLs valid, and thus the server would waste resources trying to unfurl the unfurleable. ### Other requirements - If the message is edited, the link previews should reflect the edited text, not the original one. This has been aligned with the design team as well. - If the website's thumbnail or the favicon can't be fetched, just ignore them. The only mandatory piece of metadata is the website's title and URL. - Link previews in clients should be generated in near real-time, that is, as the user types, previews are updated. In mobile this performs very well, and it's what other clients like WhatsApp, Telegram, and Facebook do. ### Decisions - While the user typing in the input field, the client is constantly (debounced) asking status-go to parse the text and extract normalized URLs and then the client checks if they're already in its in-memory cache. If they are, no RPC call is made. I chose this approach to achieve the best possible performance in mobile and avoid the whole RPC overhead, since the chat experience is already not smooth enough. The mobile client uses URLs as cache keys in a hashmap, i.e. if the key is present, it means the preview is readily available (naive, but good enough for now). This decision also gave me more flexibility to find the best UX at this stage of the feature. - Due to the requirement that users should be able to see independent loading indicators for each link preview, when status-go can't unfurl a URL, it doesn't return it in the response. - As an initial implementation, I added the BLOB column unfurled_links to the user_messages table. The preview data is then serialized as JSON before being stored in this column. I felt that creating a separate table and the related code for this initial PR would be inconvenient. Is that reasonable to you? Once things stabilize I can create a proper table if we want to avoid this kind of solution with serialized columns.
2023-05-18 18:43:06 +00:00
}
func TestSaveWithUnfurledLinks(t *testing.T) {
db, err := openTestDB()
require.NoError(t, err)
p := newSQLitePersistence(db)
require.NoError(t, err)
chatID := testPublicChatID
message := common.Message{
ID: "1",
LocalChatID: chatID,
From: testPK,
ChatMessage: &protobuf.ChatMessage{
URL unfurling (initial implementation) (#3471) This is the initial implementation for the new URL unfurling requirements. The most important one is that only the message sender will pay the privacy cost for unfurling and extracting metadata from websites. Once the message is sent, the unfurled data will be stored at the protocol level and receivers will just profit and happily decode the metadata to render it. Further development of this URL unfurling capability will be mostly guided by issues created on clients. For the moment in status-mobile: https://github.com/status-im/status-mobile/labels/url-preview - https://github.com/status-im/status-mobile/issues/15918 - https://github.com/status-im/status-mobile/issues/15917 - https://github.com/status-im/status-mobile/issues/15910 - https://github.com/status-im/status-mobile/issues/15909 - https://github.com/status-im/status-mobile/issues/15908 - https://github.com/status-im/status-mobile/issues/15906 - https://github.com/status-im/status-mobile/issues/15905 ### Terminology In the code, I've tried to stick to the word "unfurl URL" to really mean the process of extracting metadata from a website, sort of lower level. I use "link preview" to mean a higher level structure which is enriched by unfurled data. "link preview" is also how designers refer to it. ### User flows 1. Carol needs to see link previews while typing in the chat input field. Notice from the diagram nothing is persisted and that status-go endpoints are essentially stateless. ``` #+begin_src plantuml :results verbatim Client->>Server: Call wakuext_getTextURLs Server-->>Client: Normalized URLs Client->>Client: Render cached unfurled URLs Client->>Server: Unfurl non-cached URLs.\nCall wakuext_unfurlURLs Server->>Website: Fetch metadata Website-->>Server: Metadata (thumbnail URL, title, etc) Server->>Website: Fetch thumbnail Server->>Website: Fetch favicon Website-->>Server: Favicon bytes Website-->>Server: Thumbnail bytes Server->>Server: Decode & process images Server-->>Client: Unfurled data (thumbnail data URI, etc) #+end_src ``` ``` ,------. ,------. ,-------. |Client| |Server| |Website| `--+---' `--+---' `---+---' | Call wakuext_getTextURLs | | | ---------------------------------------> | | | | | Normalized URLs | | | <- - - - - - - - - - - - - - - - - - - - | | | | |----. | | | | Render cached unfurled URLs | | |<---' | | | | | | Unfurl non-cached URLs. | | | Call wakuext_unfurlURLs | | | ---------------------------------------> | | | | | | Fetch metadata | | | ------------------------------------> | | | | | Metadata (thumbnail URL, title, etc)| | | <- - - - - - - - - - - - - - - - - - | | | | | Fetch thumbnail | | | ------------------------------------> | | | | | Fetch favicon | | | ------------------------------------> | | | | | Favicon bytes | | | <- - - - - - - - - - - - - - - - - - | | | | | Thumbnail bytes | | | <- - - - - - - - - - - - - - - - - - | | | | |----. | | | | Decode & process images | | |<---' | | | | | Unfurled data (thumbnail data URI, etc)| | | <- - - - - - - - - - - - - - - - - - - - | ,--+---. ,--+---. ,---+---. |Client| |Server| |Website| `------' `------' `-------' ``` 2. Carol sends the text message with link previews in the RPC request wakuext_sendChatMessages. status-go assumes the link previews are good because it can't and shouldn't attempt to re-unfurl them. ``` #+begin_src plantuml :results verbatim Client->>Server: Call wakuext_sendChatMessages Server->>Server: Transform link previews to\nbe proto-marshalled Server->DB: Write link previews serialized as JSON Server-->>Client: Updated message response #+end_src ``` ``` ,------. ,------. ,--. |Client| |Server| |DB| `--+---' `--+---' `+-' | Call wakuext_sendChatMessages| | | -----------------------------> | | | | | |----. | | | | Transform link previews to | | |<---' be proto-marshalled | | | | | | | | | Write link previews serialized as JSON| | | --------------------------------------> | | | | Updated message response | | | <- - - - - - - - - - - - - - - | ,--+---. ,--+---. ,+-. |Client| |Server| |DB| `------' `------' `--' ``` 3. The message was sent over waku and persisted locally in Carol's device. She should now see the link previews in the chat history. There can be many link previews shared by other chat members, therefore it is important to serve the assets via the media server to avoid overloading the ReactNative bridge with lots of big JSON payloads containing base64 encoded data URIs (maybe this concern is meaningless for desktop). When a client is rendering messages with link previews, they will have the field linkPreviews, and the thumbnail URL will point to the local media server. ``` #+begin_src plantuml :results verbatim Client->>Server: GET /link-preview/thumbnail (media server) Server->>DB: Read from user_messages.unfurled_links Server->Server: Unmarshal JSON Server-->>Client: HTTP Content-Type: image/jpeg/etc #+end_src ``` ``` ,------. ,------. ,--. |Client| |Server| |DB| `--+---' `--+---' `+-' | GET /link-preview/thumbnail (media server)| | | ------------------------------------------> | | | | | | Read from user_messages.unfurled_links| | | --------------------------------------> | | | | |----. | | | | Unmarshal JSON | | |<---' | | | | | HTTP Content-Type: image/jpeg/etc | | | <- - - - - - - - - - - - - - - - - - - - - | ,--+---. ,--+---. ,+-. |Client| |Server| |DB| `------' `------' `--' ``` ### Some limitations of the current implementation The following points will become separate issues in status-go that I'll work on over the next couple weeks. In no order of importance: - Improve how multiple links are fetched; retries on failure and testing how unfurling behaves around the timeout limits (deterministically, not by making real HTTP calls as I did). https://github.com/status-im/status-go/issues/3498 - Unfurl favicons and store them in the protobuf too. - For this PR, I added unfurling support only for websites with OpenGraph https://ogp.me/ meta tags. Other unfurlers will be implemented on demand. The next one will probably be for oEmbed https://oembed.com/, the protocol supported by YouTube, for example. - Resize and/or compress thumbnails (and favicons). Often times, thumbnails are huge for the purposes of link previews. There is already support for compressing JPEGs in status-go, but I prefer to work with compression in a separate PR because I'd like to also solve the problem for PNGs (probably convert them to JPEGs, plus compress them). This would be a safe choice for thumbnails, favicons not so much because transparency is desirable. - Editing messages is not yet supported. - I haven't coded any artificial limit on the number of previews or on the size of the thumbnail payload. This will be done in a separate issue. I have heard the ideal solution may be to split messages into smaller chunks of ~125 KiB because of libp2p, but that might be too complicated at this stage of the product (?). - Link preview deletion. - For the moment, OpenGraph metadata is extracted by requesting data for the English language (and fallback to whatever is available). In the future, we'll want to unfurl by respecting the user's local device language. Some websites, like GoDaddy, are already localized based on the device's IP, but many aren't. - The website's description text should be limited by a certain number of characters, especially because it's outside our control. Exactly how much has not been decided yet, so it'll be done separately. - URL normalization can be tricky, so I implemented only the basics to help with caching. For example, the url https://status.im and HTTPS://status.im are considered identical. Also, a URL is considered valid for unfurling if its TLD exists according to publicsuffix.EffectiveTLDPlusOne. This was essential, otherwise the default Go url.Parse approach would consider many invalid URLs valid, and thus the server would waste resources trying to unfurl the unfurleable. ### Other requirements - If the message is edited, the link previews should reflect the edited text, not the original one. This has been aligned with the design team as well. - If the website's thumbnail or the favicon can't be fetched, just ignore them. The only mandatory piece of metadata is the website's title and URL. - Link previews in clients should be generated in near real-time, that is, as the user types, previews are updated. In mobile this performs very well, and it's what other clients like WhatsApp, Telegram, and Facebook do. ### Decisions - While the user typing in the input field, the client is constantly (debounced) asking status-go to parse the text and extract normalized URLs and then the client checks if they're already in its in-memory cache. If they are, no RPC call is made. I chose this approach to achieve the best possible performance in mobile and avoid the whole RPC overhead, since the chat experience is already not smooth enough. The mobile client uses URLs as cache keys in a hashmap, i.e. if the key is present, it means the preview is readily available (naive, but good enough for now). This decision also gave me more flexibility to find the best UX at this stage of the feature. - Due to the requirement that users should be able to see independent loading indicators for each link preview, when status-go can't unfurl a URL, it doesn't return it in the response. - As an initial implementation, I added the BLOB column unfurled_links to the user_messages table. The preview data is then serialized as JSON before being stored in this column. I felt that creating a separate table and the related code for this initial PR would be inconvenient. Is that reasonable to you? Once things stabilize I can create a proper table if we want to avoid this kind of solution with serialized columns.
2023-05-18 18:43:06 +00:00
Text: "some-text",
UnfurledLinks: []*protobuf.UnfurledLink{
{
Type: protobuf.UnfurledLink_LINK,
URL unfurling (initial implementation) (#3471) This is the initial implementation for the new URL unfurling requirements. The most important one is that only the message sender will pay the privacy cost for unfurling and extracting metadata from websites. Once the message is sent, the unfurled data will be stored at the protocol level and receivers will just profit and happily decode the metadata to render it. Further development of this URL unfurling capability will be mostly guided by issues created on clients. For the moment in status-mobile: https://github.com/status-im/status-mobile/labels/url-preview - https://github.com/status-im/status-mobile/issues/15918 - https://github.com/status-im/status-mobile/issues/15917 - https://github.com/status-im/status-mobile/issues/15910 - https://github.com/status-im/status-mobile/issues/15909 - https://github.com/status-im/status-mobile/issues/15908 - https://github.com/status-im/status-mobile/issues/15906 - https://github.com/status-im/status-mobile/issues/15905 ### Terminology In the code, I've tried to stick to the word "unfurl URL" to really mean the process of extracting metadata from a website, sort of lower level. I use "link preview" to mean a higher level structure which is enriched by unfurled data. "link preview" is also how designers refer to it. ### User flows 1. Carol needs to see link previews while typing in the chat input field. Notice from the diagram nothing is persisted and that status-go endpoints are essentially stateless. ``` #+begin_src plantuml :results verbatim Client->>Server: Call wakuext_getTextURLs Server-->>Client: Normalized URLs Client->>Client: Render cached unfurled URLs Client->>Server: Unfurl non-cached URLs.\nCall wakuext_unfurlURLs Server->>Website: Fetch metadata Website-->>Server: Metadata (thumbnail URL, title, etc) Server->>Website: Fetch thumbnail Server->>Website: Fetch favicon Website-->>Server: Favicon bytes Website-->>Server: Thumbnail bytes Server->>Server: Decode & process images Server-->>Client: Unfurled data (thumbnail data URI, etc) #+end_src ``` ``` ,------. ,------. ,-------. |Client| |Server| |Website| `--+---' `--+---' `---+---' | Call wakuext_getTextURLs | | | ---------------------------------------> | | | | | Normalized URLs | | | <- - - - - - - - - - - - - - - - - - - - | | | | |----. | | | | Render cached unfurled URLs | | |<---' | | | | | | Unfurl non-cached URLs. | | | Call wakuext_unfurlURLs | | | ---------------------------------------> | | | | | | Fetch metadata | | | ------------------------------------> | | | | | Metadata (thumbnail URL, title, etc)| | | <- - - - - - - - - - - - - - - - - - | | | | | Fetch thumbnail | | | ------------------------------------> | | | | | Fetch favicon | | | ------------------------------------> | | | | | Favicon bytes | | | <- - - - - - - - - - - - - - - - - - | | | | | Thumbnail bytes | | | <- - - - - - - - - - - - - - - - - - | | | | |----. | | | | Decode & process images | | |<---' | | | | | Unfurled data (thumbnail data URI, etc)| | | <- - - - - - - - - - - - - - - - - - - - | ,--+---. ,--+---. ,---+---. |Client| |Server| |Website| `------' `------' `-------' ``` 2. Carol sends the text message with link previews in the RPC request wakuext_sendChatMessages. status-go assumes the link previews are good because it can't and shouldn't attempt to re-unfurl them. ``` #+begin_src plantuml :results verbatim Client->>Server: Call wakuext_sendChatMessages Server->>Server: Transform link previews to\nbe proto-marshalled Server->DB: Write link previews serialized as JSON Server-->>Client: Updated message response #+end_src ``` ``` ,------. ,------. ,--. |Client| |Server| |DB| `--+---' `--+---' `+-' | Call wakuext_sendChatMessages| | | -----------------------------> | | | | | |----. | | | | Transform link previews to | | |<---' be proto-marshalled | | | | | | | | | Write link previews serialized as JSON| | | --------------------------------------> | | | | Updated message response | | | <- - - - - - - - - - - - - - - | ,--+---. ,--+---. ,+-. |Client| |Server| |DB| `------' `------' `--' ``` 3. The message was sent over waku and persisted locally in Carol's device. She should now see the link previews in the chat history. There can be many link previews shared by other chat members, therefore it is important to serve the assets via the media server to avoid overloading the ReactNative bridge with lots of big JSON payloads containing base64 encoded data URIs (maybe this concern is meaningless for desktop). When a client is rendering messages with link previews, they will have the field linkPreviews, and the thumbnail URL will point to the local media server. ``` #+begin_src plantuml :results verbatim Client->>Server: GET /link-preview/thumbnail (media server) Server->>DB: Read from user_messages.unfurled_links Server->Server: Unmarshal JSON Server-->>Client: HTTP Content-Type: image/jpeg/etc #+end_src ``` ``` ,------. ,------. ,--. |Client| |Server| |DB| `--+---' `--+---' `+-' | GET /link-preview/thumbnail (media server)| | | ------------------------------------------> | | | | | | Read from user_messages.unfurled_links| | | --------------------------------------> | | | | |----. | | | | Unmarshal JSON | | |<---' | | | | | HTTP Content-Type: image/jpeg/etc | | | <- - - - - - - - - - - - - - - - - - - - - | ,--+---. ,--+---. ,+-. |Client| |Server| |DB| `------' `------' `--' ``` ### Some limitations of the current implementation The following points will become separate issues in status-go that I'll work on over the next couple weeks. In no order of importance: - Improve how multiple links are fetched; retries on failure and testing how unfurling behaves around the timeout limits (deterministically, not by making real HTTP calls as I did). https://github.com/status-im/status-go/issues/3498 - Unfurl favicons and store them in the protobuf too. - For this PR, I added unfurling support only for websites with OpenGraph https://ogp.me/ meta tags. Other unfurlers will be implemented on demand. The next one will probably be for oEmbed https://oembed.com/, the protocol supported by YouTube, for example. - Resize and/or compress thumbnails (and favicons). Often times, thumbnails are huge for the purposes of link previews. There is already support for compressing JPEGs in status-go, but I prefer to work with compression in a separate PR because I'd like to also solve the problem for PNGs (probably convert them to JPEGs, plus compress them). This would be a safe choice for thumbnails, favicons not so much because transparency is desirable. - Editing messages is not yet supported. - I haven't coded any artificial limit on the number of previews or on the size of the thumbnail payload. This will be done in a separate issue. I have heard the ideal solution may be to split messages into smaller chunks of ~125 KiB because of libp2p, but that might be too complicated at this stage of the product (?). - Link preview deletion. - For the moment, OpenGraph metadata is extracted by requesting data for the English language (and fallback to whatever is available). In the future, we'll want to unfurl by respecting the user's local device language. Some websites, like GoDaddy, are already localized based on the device's IP, but many aren't. - The website's description text should be limited by a certain number of characters, especially because it's outside our control. Exactly how much has not been decided yet, so it'll be done separately. - URL normalization can be tricky, so I implemented only the basics to help with caching. For example, the url https://status.im and HTTPS://status.im are considered identical. Also, a URL is considered valid for unfurling if its TLD exists according to publicsuffix.EffectiveTLDPlusOne. This was essential, otherwise the default Go url.Parse approach would consider many invalid URLs valid, and thus the server would waste resources trying to unfurl the unfurleable. ### Other requirements - If the message is edited, the link previews should reflect the edited text, not the original one. This has been aligned with the design team as well. - If the website's thumbnail or the favicon can't be fetched, just ignore them. The only mandatory piece of metadata is the website's title and URL. - Link previews in clients should be generated in near real-time, that is, as the user types, previews are updated. In mobile this performs very well, and it's what other clients like WhatsApp, Telegram, and Facebook do. ### Decisions - While the user typing in the input field, the client is constantly (debounced) asking status-go to parse the text and extract normalized URLs and then the client checks if they're already in its in-memory cache. If they are, no RPC call is made. I chose this approach to achieve the best possible performance in mobile and avoid the whole RPC overhead, since the chat experience is already not smooth enough. The mobile client uses URLs as cache keys in a hashmap, i.e. if the key is present, it means the preview is readily available (naive, but good enough for now). This decision also gave me more flexibility to find the best UX at this stage of the feature. - Due to the requirement that users should be able to see independent loading indicators for each link preview, when status-go can't unfurl a URL, it doesn't return it in the response. - As an initial implementation, I added the BLOB column unfurled_links to the user_messages table. The preview data is then serialized as JSON before being stored in this column. I felt that creating a separate table and the related code for this initial PR would be inconvenient. Is that reasonable to you? Once things stabilize I can create a proper table if we want to avoid this kind of solution with serialized columns.
2023-05-18 18:43:06 +00:00
Url: "https://github.com",
Title: "Build software better, together",
Description: "GitHub is where people build software.",
ThumbnailPayload: []byte("abc"),
},
{
Type: protobuf.UnfurledLink_LINK,
URL unfurling (initial implementation) (#3471) This is the initial implementation for the new URL unfurling requirements. The most important one is that only the message sender will pay the privacy cost for unfurling and extracting metadata from websites. Once the message is sent, the unfurled data will be stored at the protocol level and receivers will just profit and happily decode the metadata to render it. Further development of this URL unfurling capability will be mostly guided by issues created on clients. For the moment in status-mobile: https://github.com/status-im/status-mobile/labels/url-preview - https://github.com/status-im/status-mobile/issues/15918 - https://github.com/status-im/status-mobile/issues/15917 - https://github.com/status-im/status-mobile/issues/15910 - https://github.com/status-im/status-mobile/issues/15909 - https://github.com/status-im/status-mobile/issues/15908 - https://github.com/status-im/status-mobile/issues/15906 - https://github.com/status-im/status-mobile/issues/15905 ### Terminology In the code, I've tried to stick to the word "unfurl URL" to really mean the process of extracting metadata from a website, sort of lower level. I use "link preview" to mean a higher level structure which is enriched by unfurled data. "link preview" is also how designers refer to it. ### User flows 1. Carol needs to see link previews while typing in the chat input field. Notice from the diagram nothing is persisted and that status-go endpoints are essentially stateless. ``` #+begin_src plantuml :results verbatim Client->>Server: Call wakuext_getTextURLs Server-->>Client: Normalized URLs Client->>Client: Render cached unfurled URLs Client->>Server: Unfurl non-cached URLs.\nCall wakuext_unfurlURLs Server->>Website: Fetch metadata Website-->>Server: Metadata (thumbnail URL, title, etc) Server->>Website: Fetch thumbnail Server->>Website: Fetch favicon Website-->>Server: Favicon bytes Website-->>Server: Thumbnail bytes Server->>Server: Decode & process images Server-->>Client: Unfurled data (thumbnail data URI, etc) #+end_src ``` ``` ,------. ,------. ,-------. |Client| |Server| |Website| `--+---' `--+---' `---+---' | Call wakuext_getTextURLs | | | ---------------------------------------> | | | | | Normalized URLs | | | <- - - - - - - - - - - - - - - - - - - - | | | | |----. | | | | Render cached unfurled URLs | | |<---' | | | | | | Unfurl non-cached URLs. | | | Call wakuext_unfurlURLs | | | ---------------------------------------> | | | | | | Fetch metadata | | | ------------------------------------> | | | | | Metadata (thumbnail URL, title, etc)| | | <- - - - - - - - - - - - - - - - - - | | | | | Fetch thumbnail | | | ------------------------------------> | | | | | Fetch favicon | | | ------------------------------------> | | | | | Favicon bytes | | | <- - - - - - - - - - - - - - - - - - | | | | | Thumbnail bytes | | | <- - - - - - - - - - - - - - - - - - | | | | |----. | | | | Decode & process images | | |<---' | | | | | Unfurled data (thumbnail data URI, etc)| | | <- - - - - - - - - - - - - - - - - - - - | ,--+---. ,--+---. ,---+---. |Client| |Server| |Website| `------' `------' `-------' ``` 2. Carol sends the text message with link previews in the RPC request wakuext_sendChatMessages. status-go assumes the link previews are good because it can't and shouldn't attempt to re-unfurl them. ``` #+begin_src plantuml :results verbatim Client->>Server: Call wakuext_sendChatMessages Server->>Server: Transform link previews to\nbe proto-marshalled Server->DB: Write link previews serialized as JSON Server-->>Client: Updated message response #+end_src ``` ``` ,------. ,------. ,--. |Client| |Server| |DB| `--+---' `--+---' `+-' | Call wakuext_sendChatMessages| | | -----------------------------> | | | | | |----. | | | | Transform link previews to | | |<---' be proto-marshalled | | | | | | | | | Write link previews serialized as JSON| | | --------------------------------------> | | | | Updated message response | | | <- - - - - - - - - - - - - - - | ,--+---. ,--+---. ,+-. |Client| |Server| |DB| `------' `------' `--' ``` 3. The message was sent over waku and persisted locally in Carol's device. She should now see the link previews in the chat history. There can be many link previews shared by other chat members, therefore it is important to serve the assets via the media server to avoid overloading the ReactNative bridge with lots of big JSON payloads containing base64 encoded data URIs (maybe this concern is meaningless for desktop). When a client is rendering messages with link previews, they will have the field linkPreviews, and the thumbnail URL will point to the local media server. ``` #+begin_src plantuml :results verbatim Client->>Server: GET /link-preview/thumbnail (media server) Server->>DB: Read from user_messages.unfurled_links Server->Server: Unmarshal JSON Server-->>Client: HTTP Content-Type: image/jpeg/etc #+end_src ``` ``` ,------. ,------. ,--. |Client| |Server| |DB| `--+---' `--+---' `+-' | GET /link-preview/thumbnail (media server)| | | ------------------------------------------> | | | | | | Read from user_messages.unfurled_links| | | --------------------------------------> | | | | |----. | | | | Unmarshal JSON | | |<---' | | | | | HTTP Content-Type: image/jpeg/etc | | | <- - - - - - - - - - - - - - - - - - - - - | ,--+---. ,--+---. ,+-. |Client| |Server| |DB| `------' `------' `--' ``` ### Some limitations of the current implementation The following points will become separate issues in status-go that I'll work on over the next couple weeks. In no order of importance: - Improve how multiple links are fetched; retries on failure and testing how unfurling behaves around the timeout limits (deterministically, not by making real HTTP calls as I did). https://github.com/status-im/status-go/issues/3498 - Unfurl favicons and store them in the protobuf too. - For this PR, I added unfurling support only for websites with OpenGraph https://ogp.me/ meta tags. Other unfurlers will be implemented on demand. The next one will probably be for oEmbed https://oembed.com/, the protocol supported by YouTube, for example. - Resize and/or compress thumbnails (and favicons). Often times, thumbnails are huge for the purposes of link previews. There is already support for compressing JPEGs in status-go, but I prefer to work with compression in a separate PR because I'd like to also solve the problem for PNGs (probably convert them to JPEGs, plus compress them). This would be a safe choice for thumbnails, favicons not so much because transparency is desirable. - Editing messages is not yet supported. - I haven't coded any artificial limit on the number of previews or on the size of the thumbnail payload. This will be done in a separate issue. I have heard the ideal solution may be to split messages into smaller chunks of ~125 KiB because of libp2p, but that might be too complicated at this stage of the product (?). - Link preview deletion. - For the moment, OpenGraph metadata is extracted by requesting data for the English language (and fallback to whatever is available). In the future, we'll want to unfurl by respecting the user's local device language. Some websites, like GoDaddy, are already localized based on the device's IP, but many aren't. - The website's description text should be limited by a certain number of characters, especially because it's outside our control. Exactly how much has not been decided yet, so it'll be done separately. - URL normalization can be tricky, so I implemented only the basics to help with caching. For example, the url https://status.im and HTTPS://status.im are considered identical. Also, a URL is considered valid for unfurling if its TLD exists according to publicsuffix.EffectiveTLDPlusOne. This was essential, otherwise the default Go url.Parse approach would consider many invalid URLs valid, and thus the server would waste resources trying to unfurl the unfurleable. ### Other requirements - If the message is edited, the link previews should reflect the edited text, not the original one. This has been aligned with the design team as well. - If the website's thumbnail or the favicon can't be fetched, just ignore them. The only mandatory piece of metadata is the website's title and URL. - Link previews in clients should be generated in near real-time, that is, as the user types, previews are updated. In mobile this performs very well, and it's what other clients like WhatsApp, Telegram, and Facebook do. ### Decisions - While the user typing in the input field, the client is constantly (debounced) asking status-go to parse the text and extract normalized URLs and then the client checks if they're already in its in-memory cache. If they are, no RPC call is made. I chose this approach to achieve the best possible performance in mobile and avoid the whole RPC overhead, since the chat experience is already not smooth enough. The mobile client uses URLs as cache keys in a hashmap, i.e. if the key is present, it means the preview is readily available (naive, but good enough for now). This decision also gave me more flexibility to find the best UX at this stage of the feature. - Due to the requirement that users should be able to see independent loading indicators for each link preview, when status-go can't unfurl a URL, it doesn't return it in the response. - As an initial implementation, I added the BLOB column unfurled_links to the user_messages table. The preview data is then serialized as JSON before being stored in this column. I felt that creating a separate table and the related code for this initial PR would be inconvenient. Is that reasonable to you? Once things stabilize I can create a proper table if we want to avoid this kind of solution with serialized columns.
2023-05-18 18:43:06 +00:00
Url: "https://www.youtube.com/watch?v=mzOyYtfXkb0",
Title: "Status Town Hall #67 - 12 October 2020",
Description: "",
ThumbnailPayload: []byte("def"),
},
},
},
}
2020-10-27 17:35:28 +00:00
URL unfurling (initial implementation) (#3471) This is the initial implementation for the new URL unfurling requirements. The most important one is that only the message sender will pay the privacy cost for unfurling and extracting metadata from websites. Once the message is sent, the unfurled data will be stored at the protocol level and receivers will just profit and happily decode the metadata to render it. Further development of this URL unfurling capability will be mostly guided by issues created on clients. For the moment in status-mobile: https://github.com/status-im/status-mobile/labels/url-preview - https://github.com/status-im/status-mobile/issues/15918 - https://github.com/status-im/status-mobile/issues/15917 - https://github.com/status-im/status-mobile/issues/15910 - https://github.com/status-im/status-mobile/issues/15909 - https://github.com/status-im/status-mobile/issues/15908 - https://github.com/status-im/status-mobile/issues/15906 - https://github.com/status-im/status-mobile/issues/15905 ### Terminology In the code, I've tried to stick to the word "unfurl URL" to really mean the process of extracting metadata from a website, sort of lower level. I use "link preview" to mean a higher level structure which is enriched by unfurled data. "link preview" is also how designers refer to it. ### User flows 1. Carol needs to see link previews while typing in the chat input field. Notice from the diagram nothing is persisted and that status-go endpoints are essentially stateless. ``` #+begin_src plantuml :results verbatim Client->>Server: Call wakuext_getTextURLs Server-->>Client: Normalized URLs Client->>Client: Render cached unfurled URLs Client->>Server: Unfurl non-cached URLs.\nCall wakuext_unfurlURLs Server->>Website: Fetch metadata Website-->>Server: Metadata (thumbnail URL, title, etc) Server->>Website: Fetch thumbnail Server->>Website: Fetch favicon Website-->>Server: Favicon bytes Website-->>Server: Thumbnail bytes Server->>Server: Decode & process images Server-->>Client: Unfurled data (thumbnail data URI, etc) #+end_src ``` ``` ,------. ,------. ,-------. |Client| |Server| |Website| `--+---' `--+---' `---+---' | Call wakuext_getTextURLs | | | ---------------------------------------> | | | | | Normalized URLs | | | <- - - - - - - - - - - - - - - - - - - - | | | | |----. | | | | Render cached unfurled URLs | | |<---' | | | | | | Unfurl non-cached URLs. | | | Call wakuext_unfurlURLs | | | ---------------------------------------> | | | | | | Fetch metadata | | | ------------------------------------> | | | | | Metadata (thumbnail URL, title, etc)| | | <- - - - - - - - - - - - - - - - - - | | | | | Fetch thumbnail | | | ------------------------------------> | | | | | Fetch favicon | | | ------------------------------------> | | | | | Favicon bytes | | | <- - - - - - - - - - - - - - - - - - | | | | | Thumbnail bytes | | | <- - - - - - - - - - - - - - - - - - | | | | |----. | | | | Decode & process images | | |<---' | | | | | Unfurled data (thumbnail data URI, etc)| | | <- - - - - - - - - - - - - - - - - - - - | ,--+---. ,--+---. ,---+---. |Client| |Server| |Website| `------' `------' `-------' ``` 2. Carol sends the text message with link previews in the RPC request wakuext_sendChatMessages. status-go assumes the link previews are good because it can't and shouldn't attempt to re-unfurl them. ``` #+begin_src plantuml :results verbatim Client->>Server: Call wakuext_sendChatMessages Server->>Server: Transform link previews to\nbe proto-marshalled Server->DB: Write link previews serialized as JSON Server-->>Client: Updated message response #+end_src ``` ``` ,------. ,------. ,--. |Client| |Server| |DB| `--+---' `--+---' `+-' | Call wakuext_sendChatMessages| | | -----------------------------> | | | | | |----. | | | | Transform link previews to | | |<---' be proto-marshalled | | | | | | | | | Write link previews serialized as JSON| | | --------------------------------------> | | | | Updated message response | | | <- - - - - - - - - - - - - - - | ,--+---. ,--+---. ,+-. |Client| |Server| |DB| `------' `------' `--' ``` 3. The message was sent over waku and persisted locally in Carol's device. She should now see the link previews in the chat history. There can be many link previews shared by other chat members, therefore it is important to serve the assets via the media server to avoid overloading the ReactNative bridge with lots of big JSON payloads containing base64 encoded data URIs (maybe this concern is meaningless for desktop). When a client is rendering messages with link previews, they will have the field linkPreviews, and the thumbnail URL will point to the local media server. ``` #+begin_src plantuml :results verbatim Client->>Server: GET /link-preview/thumbnail (media server) Server->>DB: Read from user_messages.unfurled_links Server->Server: Unmarshal JSON Server-->>Client: HTTP Content-Type: image/jpeg/etc #+end_src ``` ``` ,------. ,------. ,--. |Client| |Server| |DB| `--+---' `--+---' `+-' | GET /link-preview/thumbnail (media server)| | | ------------------------------------------> | | | | | | Read from user_messages.unfurled_links| | | --------------------------------------> | | | | |----. | | | | Unmarshal JSON | | |<---' | | | | | HTTP Content-Type: image/jpeg/etc | | | <- - - - - - - - - - - - - - - - - - - - - | ,--+---. ,--+---. ,+-. |Client| |Server| |DB| `------' `------' `--' ``` ### Some limitations of the current implementation The following points will become separate issues in status-go that I'll work on over the next couple weeks. In no order of importance: - Improve how multiple links are fetched; retries on failure and testing how unfurling behaves around the timeout limits (deterministically, not by making real HTTP calls as I did). https://github.com/status-im/status-go/issues/3498 - Unfurl favicons and store them in the protobuf too. - For this PR, I added unfurling support only for websites with OpenGraph https://ogp.me/ meta tags. Other unfurlers will be implemented on demand. The next one will probably be for oEmbed https://oembed.com/, the protocol supported by YouTube, for example. - Resize and/or compress thumbnails (and favicons). Often times, thumbnails are huge for the purposes of link previews. There is already support for compressing JPEGs in status-go, but I prefer to work with compression in a separate PR because I'd like to also solve the problem for PNGs (probably convert them to JPEGs, plus compress them). This would be a safe choice for thumbnails, favicons not so much because transparency is desirable. - Editing messages is not yet supported. - I haven't coded any artificial limit on the number of previews or on the size of the thumbnail payload. This will be done in a separate issue. I have heard the ideal solution may be to split messages into smaller chunks of ~125 KiB because of libp2p, but that might be too complicated at this stage of the product (?). - Link preview deletion. - For the moment, OpenGraph metadata is extracted by requesting data for the English language (and fallback to whatever is available). In the future, we'll want to unfurl by respecting the user's local device language. Some websites, like GoDaddy, are already localized based on the device's IP, but many aren't. - The website's description text should be limited by a certain number of characters, especially because it's outside our control. Exactly how much has not been decided yet, so it'll be done separately. - URL normalization can be tricky, so I implemented only the basics to help with caching. For example, the url https://status.im and HTTPS://status.im are considered identical. Also, a URL is considered valid for unfurling if its TLD exists according to publicsuffix.EffectiveTLDPlusOne. This was essential, otherwise the default Go url.Parse approach would consider many invalid URLs valid, and thus the server would waste resources trying to unfurl the unfurleable. ### Other requirements - If the message is edited, the link previews should reflect the edited text, not the original one. This has been aligned with the design team as well. - If the website's thumbnail or the favicon can't be fetched, just ignore them. The only mandatory piece of metadata is the website's title and URL. - Link previews in clients should be generated in near real-time, that is, as the user types, previews are updated. In mobile this performs very well, and it's what other clients like WhatsApp, Telegram, and Facebook do. ### Decisions - While the user typing in the input field, the client is constantly (debounced) asking status-go to parse the text and extract normalized URLs and then the client checks if they're already in its in-memory cache. If they are, no RPC call is made. I chose this approach to achieve the best possible performance in mobile and avoid the whole RPC overhead, since the chat experience is already not smooth enough. The mobile client uses URLs as cache keys in a hashmap, i.e. if the key is present, it means the preview is readily available (naive, but good enough for now). This decision also gave me more flexibility to find the best UX at this stage of the feature. - Due to the requirement that users should be able to see independent loading indicators for each link preview, when status-go can't unfurl a URL, it doesn't return it in the response. - As an initial implementation, I added the BLOB column unfurled_links to the user_messages table. The preview data is then serialized as JSON before being stored in this column. I felt that creating a separate table and the related code for this initial PR would be inconvenient. Is that reasonable to you? Once things stabilize I can create a proper table if we want to avoid this kind of solution with serialized columns.
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err = p.SaveMessages([]*common.Message{&message})
require.NoError(t, err)
mgs, _, err := p.MessageByChatID(chatID, "", 10)
require.NoError(t, err)
require.Len(t, mgs, 1)
require.Len(t, mgs[0].UnfurledLinks, 2)
require.Equal(t, mgs[0].UnfurledLinks, message.UnfurledLinks)
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}
func TestHideMessage(t *testing.T) {
db, err := openTestDB()
require.NoError(t, err)
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p := newSQLitePersistence(db)
chatID := testPublicChatID
message := &common.Message{
ID: "id-1",
LocalChatID: chatID,
ChatMessage: &protobuf.ChatMessage{
Text: "content-1",
Clock: uint64(1),
},
From: "1",
}
messages := []*common.Message{message}
err = p.SaveMessages(messages)
require.NoError(t, err)
err = p.HideMessage(message.ID)
require.NoError(t, err)
var actualHidden, actualSeen bool
err = p.db.QueryRow("SELECT hide, seen FROM user_messages WHERE id = ?", message.ID).Scan(&actualHidden, &actualSeen)
require.NoError(t, err)
require.True(t, actualHidden)
require.True(t, actualSeen)
}
func TestDeactivatePublicChat(t *testing.T) {
db, err := openTestDB()
require.NoError(t, err)
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p := newSQLitePersistence(db)
publicChatID := "public-chat-id"
var currentClockValue uint64 = 10
timesource := &testTimeSource{}
lastMessage := common.Message{
ID: "0x01",
LocalChatID: publicChatID,
ChatMessage: &protobuf.ChatMessage{Text: "some-text"},
From: testPK,
}
lastMessage.Clock = 20
require.NoError(t, p.SaveMessages([]*common.Message{&lastMessage}))
publicChat := CreatePublicChat(publicChatID, timesource)
publicChat.LastMessage = &lastMessage
publicChat.UnviewedMessagesCount = 1
err = p.DeactivateChat(publicChat, currentClockValue, true)
// It does not set deleted at for a public chat
require.NoError(t, err)
require.Equal(t, uint64(0), publicChat.DeletedAtClockValue)
// It sets the lastMessage to nil
require.Nil(t, publicChat.LastMessage)
// It sets unviewed messages count
require.Equal(t, uint(0), publicChat.UnviewedMessagesCount)
// It sets active as false
require.False(t, publicChat.Active)
// It deletes messages
messages, _, err := p.MessageByChatID(publicChatID, "", 10)
require.NoError(t, err)
require.Len(t, messages, 0)
// Reload chat to make sure it has been save
dbChat, err := p.Chat(publicChatID)
require.NoError(t, err)
require.NotNil(t, dbChat)
// Same checks on the chat pulled from the db
// It does not set deleted at for a public chat
require.NoError(t, err)
require.Equal(t, uint64(0), dbChat.DeletedAtClockValue)
// It sets the lastMessage to nil
require.Nil(t, dbChat.LastMessage)
// It sets unviewed messages count
require.Equal(t, uint(0), dbChat.UnviewedMessagesCount)
// It sets active as false
require.False(t, dbChat.Active)
}
func TestDeactivateOneToOneChat(t *testing.T) {
key, err := crypto.GenerateKey()
require.NoError(t, err)
pkString := types.EncodeHex(crypto.FromECDSAPub(&key.PublicKey))
db, err := openTestDB()
require.NoError(t, err)
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p := newSQLitePersistence(db)
var currentClockValue uint64 = 10
timesource := &testTimeSource{}
chat := CreateOneToOneChat(pkString, &key.PublicKey, timesource)
lastMessage := common.Message{
ID: "0x01",
LocalChatID: chat.ID,
ChatMessage: &protobuf.ChatMessage{Text: "some-text"},
From: testPK,
}
lastMessage.Clock = 20
require.NoError(t, p.SaveMessages([]*common.Message{&lastMessage}))
chat.LastMessage = &lastMessage
chat.UnviewedMessagesCount = 1
err = p.DeactivateChat(chat, currentClockValue, true)
// It does set deleted at for a public chat
require.NoError(t, err)
require.NotEqual(t, uint64(0), chat.DeletedAtClockValue)
// It sets the lastMessage to nil
require.Nil(t, chat.LastMessage)
// It sets unviewed messages count
require.Equal(t, uint(0), chat.UnviewedMessagesCount)
// It sets active as false
require.False(t, chat.Active)
// It deletes messages
messages, _, err := p.MessageByChatID(chat.ID, "", 10)
require.NoError(t, err)
require.Len(t, messages, 0)
// Reload chat to make sure it has been save
dbChat, err := p.Chat(chat.ID)
require.NoError(t, err)
require.NotNil(t, dbChat)
// Same checks on the chat pulled from the db
// It does set deleted at for a public chat
require.NoError(t, err)
require.NotEqual(t, uint64(0), dbChat.DeletedAtClockValue)
// It sets the lastMessage to nil
require.Nil(t, dbChat.LastMessage)
// It sets unviewed messages count
require.Equal(t, uint(0), dbChat.UnviewedMessagesCount)
// It sets active as false
require.False(t, dbChat.Active)
}
func TestConfirmations(t *testing.T) {
dataSyncID1 := []byte("datsync-id-1")
dataSyncID2 := []byte("datsync-id-2")
dataSyncID3 := []byte("datsync-id-3")
dataSyncID4 := []byte("datsync-id-3")
messageID1 := []byte("message-id-1")
messageID2 := []byte("message-id-2")
publicKey1 := []byte("pk-1")
publicKey2 := []byte("pk-2")
publicKey3 := []byte("pk-3")
db, err := openTestDB()
require.NoError(t, err)
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p := newSQLitePersistence(db)
confirmation1 := &common.RawMessageConfirmation{
DataSyncID: dataSyncID1,
MessageID: messageID1,
PublicKey: publicKey1,
}
// Same datasyncID and same messageID, different pubkey
confirmation2 := &common.RawMessageConfirmation{
DataSyncID: dataSyncID2,
MessageID: messageID1,
PublicKey: publicKey2,
}
// Different datasyncID and same messageID, different pubkey
confirmation3 := &common.RawMessageConfirmation{
DataSyncID: dataSyncID3,
MessageID: messageID1,
PublicKey: publicKey3,
}
// Same dataSyncID, different messageID
confirmation4 := &common.RawMessageConfirmation{
DataSyncID: dataSyncID4,
MessageID: messageID2,
PublicKey: publicKey1,
}
require.NoError(t, p.InsertPendingConfirmation(confirmation1))
require.NoError(t, p.InsertPendingConfirmation(confirmation2))
require.NoError(t, p.InsertPendingConfirmation(confirmation3))
require.NoError(t, p.InsertPendingConfirmation(confirmation4))
// We confirm the first datasync message, no confirmations
messageID, err := p.MarkAsConfirmed(dataSyncID1, false)
require.NoError(t, err)
require.Nil(t, messageID)
// We confirm the second datasync message, no confirmations
messageID, err = p.MarkAsConfirmed(dataSyncID2, false)
require.NoError(t, err)
require.Nil(t, messageID)
// We confirm the third datasync message, messageID1 should be confirmed
messageID, err = p.MarkAsConfirmed(dataSyncID3, false)
require.NoError(t, err)
require.Equal(t, messageID, types.HexBytes(messageID1))
}
func TestConfirmationsAtLeastOne(t *testing.T) {
dataSyncID1 := []byte("datsync-id-1")
dataSyncID2 := []byte("datsync-id-2")
dataSyncID3 := []byte("datsync-id-3")
messageID1 := []byte("message-id-1")
publicKey1 := []byte("pk-1")
publicKey2 := []byte("pk-2")
publicKey3 := []byte("pk-3")
db, err := openTestDB()
require.NoError(t, err)
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p := newSQLitePersistence(db)
confirmation1 := &common.RawMessageConfirmation{
DataSyncID: dataSyncID1,
MessageID: messageID1,
PublicKey: publicKey1,
}
// Same datasyncID and same messageID, different pubkey
confirmation2 := &common.RawMessageConfirmation{
DataSyncID: dataSyncID2,
MessageID: messageID1,
PublicKey: publicKey2,
}
// Different datasyncID and same messageID, different pubkey
confirmation3 := &common.RawMessageConfirmation{
DataSyncID: dataSyncID3,
MessageID: messageID1,
PublicKey: publicKey3,
}
require.NoError(t, p.InsertPendingConfirmation(confirmation1))
require.NoError(t, p.InsertPendingConfirmation(confirmation2))
require.NoError(t, p.InsertPendingConfirmation(confirmation3))
// We confirm the first datasync message, messageID1 and 3 should be confirmed
messageID, err := p.MarkAsConfirmed(dataSyncID1, true)
require.NoError(t, err)
require.NotNil(t, messageID)
require.Equal(t, types.HexBytes(messageID1), messageID)
}
func TestSaveCommunityChat(t *testing.T) {
db, err := openTestDB()
require.NoError(t, err)
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p := newSQLitePersistence(db)
identity := &protobuf.ChatIdentity{
DisplayName: "community-chat-name",
Description: "community-chat-name-description",
FirstMessageTimestamp: 1,
}
permissions := &protobuf.CommunityPermissions{
Access: protobuf.CommunityPermissions_AUTO_ACCEPT,
}
communityChat := &protobuf.CommunityChat{
Identity: identity,
Permissions: permissions,
}
chat := CreateCommunityChat("test-or-gid", "test-chat-id", communityChat, &testTimeSource{})
chat.LastMessage = common.NewMessage()
err = p.SaveChat(*chat)
require.NoError(t, err)
retrievedChat, err := p.Chat(chat.ID)
require.NoError(t, err)
require.Equal(t, chat, retrievedChat)
}
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func TestSaveDiscordMessageAuthor(t *testing.T) {
db, err := openTestDB()
require.NoError(t, err)
p := newSQLitePersistence(db)
testAuthor := &protobuf.DiscordMessageAuthor{
Id: "1",
Name: "Testuser",
Discriminator: "1234",
Nickname: "User",
AvatarUrl: "http://example.com/profile.jpg",
AvatarImagePayload: []byte{1, 2, 3},
}
require.NoError(t, p.SaveDiscordMessageAuthor(testAuthor))
exists, err := p.HasDiscordMessageAuthor("1")
require.NoError(t, err)
require.True(t, exists)
author, err := p.GetDiscordMessageAuthorByID("1")
require.NoError(t, err)
require.Equal(t, author.Id, testAuthor.Id)
require.Equal(t, author.Name, testAuthor.Name)
}
func TestGetDiscordMessageAuthorImagePayloadByID(t *testing.T) {
db, err := openTestDB()
require.NoError(t, err)
p := newSQLitePersistence(db)
testAuthor := &protobuf.DiscordMessageAuthor{
Id: "1",
Name: "Testuser",
Discriminator: "1234",
Nickname: "User",
AvatarUrl: "http://example.com/profile.jpg",
AvatarImagePayload: []byte{1, 2, 3},
}
require.NoError(t, p.SaveDiscordMessageAuthor(testAuthor))
payload, err := p.GetDiscordMessageAuthorImagePayloadByID("1")
require.NoError(t, err)
require.Equal(t, testAuthor.AvatarImagePayload, payload)
}
func TestSaveDiscordMessage(t *testing.T) {
db, err := openTestDB()
require.NoError(t, err)
p := newSQLitePersistence(db)
require.NoError(t, p.SaveDiscordMessage(&protobuf.DiscordMessage{
Id: "1",
Type: "Default",
Timestamp: "123456",
Content: "This is the message",
Author: &protobuf.DiscordMessageAuthor{
Id: "2",
},
Reference: &protobuf.DiscordMessageReference{},
}))
require.NoError(t, err)
}
func TestSaveDiscordMessages(t *testing.T) {
db, err := openTestDB()
require.NoError(t, err)
p := newSQLitePersistence(db)
for i := 0; i < 10; i++ {
id := strconv.Itoa(i)
err := insertMinimalDiscordMessage(p, id, id)
require.NoError(t, err)
m, err := p.MessageByID(id)
require.NoError(t, err)
dm := m.GetDiscordMessage()
require.NotNil(t, dm)
require.EqualValues(t, id, dm.Id)
require.EqualValues(t, "2", dm.Author.Id)
}
}
func TestUpdateDiscordMessageAuthorImage(t *testing.T) {
db, err := openTestDB()
require.NoError(t, err)
p := newSQLitePersistence(db)
require.NoError(t, p.SaveDiscordMessageAuthor(&protobuf.DiscordMessageAuthor{
Id: "1",
Name: "Testuser",
Discriminator: "1234",
Nickname: "User",
AvatarUrl: "http://example.com/profile.jpg",
}))
exists, err := p.HasDiscordMessageAuthor("1")
require.NoError(t, err)
require.True(t, exists)
err = p.UpdateDiscordMessageAuthorImage("1", []byte{0, 1, 2, 3})
require.NoError(t, err)
payload, err := p.GetDiscordMessageAuthorImagePayloadByID("1")
require.NoError(t, err)
require.Equal(t, []byte{0, 1, 2, 3}, payload)
}
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func TestSaveHashRatchetMessage(t *testing.T) {
db, err := openTestDB()
require.NoError(t, err)
p := newSQLitePersistence(db)
groupID1 := []byte("group-id-1")
groupID2 := []byte("group-id-2")
keyID := []byte("key-id")
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message1 := &types.Message{
Hash: []byte{1},
Sig: []byte{2},
TTL: 1,
Timestamp: 2,
Payload: []byte{3},
}
require.NoError(t, p.SaveHashRatchetMessage(groupID1, keyID, message1))
message2 := &types.Message{
Hash: []byte{2},
Sig: []byte{2},
TTL: 1,
Topic: types.BytesToTopic([]byte{5}),
Timestamp: 2,
Payload: []byte{3},
Dst: []byte{4},
P2P: true,
}
require.NoError(t, p.SaveHashRatchetMessage(groupID2, keyID, message2))
fetchedMessages, err := p.GetHashRatchetMessages(keyID)
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require.NoError(t, err)
require.NotNil(t, fetchedMessages)
require.Len(t, fetchedMessages, 2)
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}
func TestCountActiveChattersInCommunity(t *testing.T) {
db, err := openTestDB()
require.NoError(t, err)
p := newSQLitePersistence(db)
channel1 := Chat{
ID: "channel1",
Name: "channel1",
CommunityID: "testCommunity",
}
channel2 := Chat{
ID: "channel2",
Name: "channel2",
CommunityID: "testCommunity",
}
require.NoError(t, p.SaveChat(channel1))
require.NoError(t, p.SaveChat(channel2))
fillChatWithMessages := func(chat *Chat, offset int) {
count := 5
var messages []*common.Message
for i := 0; i < count; i++ {
messages = append(messages, &common.Message{
ID: fmt.Sprintf("%smsg%d", chat.Name, i),
LocalChatID: chat.ID,
ChatMessage: &protobuf.ChatMessage{
Clock: uint64(i),
Timestamp: uint64(i + offset),
},
From: fmt.Sprintf("user%d", i),
})
}
require.NoError(t, p.SaveMessages(messages))
}
// timestamp/user/msgID
// channel1: 0/user0/channel1msg0 1/user1/channel1msg1 2/user2/channel1msg2 3/user3/channel1msg3 4/user4/channel1msg4
// channel2: 3/user0/channel2msg0 4/user1/channel2msg1 5/user2/channel2msg2 6/user3/channel2msg3 7/user4/channel2msg4
fillChatWithMessages(&channel1, 0)
fillChatWithMessages(&channel2, 3)
checker := func(activeAfterTimestamp int64, expected uint) {
result, err := p.CountActiveChattersInCommunity("testCommunity", activeAfterTimestamp)
require.NoError(t, err)
require.Equal(t, expected, result)
}
checker(0, 5)
checker(3, 5)
checker(4, 4)
checker(5, 3)
checker(6, 2)
checker(7, 1)
checker(8, 0)
}
func TestDeleteHashRatchetMessage(t *testing.T) {
db, err := openTestDB()
require.NoError(t, err)
p := newSQLitePersistence(db)
groupID := []byte("group-id")
keyID := []byte("key-id")
message1 := &types.Message{
Hash: []byte{1},
Sig: []byte{2},
TTL: 1,
Timestamp: 2,
Payload: []byte{3},
}
require.NoError(t, p.SaveHashRatchetMessage(groupID, keyID, message1))
message2 := &types.Message{
Hash: []byte{2},
Sig: []byte{2},
TTL: 1,
Topic: types.BytesToTopic([]byte{5}),
Timestamp: 2,
Payload: []byte{3},
Dst: []byte{4},
P2P: true,
}
require.NoError(t, p.SaveHashRatchetMessage(groupID, keyID, message2))
message3 := &types.Message{
Hash: []byte{3},
Sig: []byte{2},
TTL: 1,
Topic: types.BytesToTopic([]byte{5}),
Timestamp: 2,
Payload: []byte{3},
Dst: []byte{4},
P2P: true,
}
require.NoError(t, p.SaveHashRatchetMessage(groupID, keyID, message3))
fetchedMessages, err := p.GetHashRatchetMessages(keyID)
require.NoError(t, err)
require.NotNil(t, fetchedMessages)
require.Len(t, fetchedMessages, 3)
require.NoError(t, p.DeleteHashRatchetMessages([][]byte{[]byte{1}, []byte{2}}))
fetchedMessages, err = p.GetHashRatchetMessages(keyID)
require.NoError(t, err)
require.NotNil(t, fetchedMessages)
require.Len(t, fetchedMessages, 1)
}