MM-11572: Force correct order on messages generated in the bulk (#9244)

app/import.go

@@ -100,6 +100,10 @@ func (a *App) BulkImport(fileReader io.Reader, dryRun bool, workers int) (*model
 		return model.NewAppError("BulkImport", "app.import.bulk_import.file_scan.error", nil, err.Error(), http.StatusInternalServerError), 0
 	}
 
+	if err := a.finalizeImport(dryRun); err != nil {
+		return err, 0
+	}
+
 	return nil, 0
 }
 
@@ -165,3 +169,14 @@ func (a *App) ImportLine(line LineImportData, dryRun bool) *model.AppError {
 		return model.NewAppError("BulkImport", "app.import.import_line.unknown_line_type.error", map[string]interface{}{"Type": line.Type}, "", http.StatusBadRequest)
 	}
 }
+
+func (a *App) finalizeImport(dryRun bool) *model.AppError {
+	if dryRun {
+		return nil
+	}
+	result := <-a.Srv.Store.Channel().ResetLastPostAt()
+	if result.Err != nil {
+		return result.Err
+	}
+	return nil
+}

cmd/mattermost/commands/sampledata.go

@@ -59,6 +59,15 @@ func randomPastTime(seconds int) int64 {
 	return (today.Unix() * 1000) - int64(rand.Intn(seconds*1000))
 }
 
+func sortedRandomDates(size int) []int64 {
+	dates := make([]int64, size)
+	for i := 0; i < size; i++ {
+		dates[i] = randomPastTime(50000)
+	}
+	sort.Slice(dates, func(a, b int) bool { return dates[a] < dates[b] })
+	return dates
+}
+
 func randomEmoji() string {
 	emojis := []string{"+1", "-1", "heart", "blush"}
 	return emojis[rand.Intn(len(emojis))]
@@ -274,8 +283,10 @@ func sampleDataCmdF(command *cobra.Command, args []string) error {
 
 	for team, channels := range teamsAndChannels {
 		for _, channel := range channels {
+			dates := sortedRandomDates(postsPerChannel)
+
 			for i := 0; i < postsPerChannel; i++ {
-				postLine := createPost(team, channel, allUsers)
+				postLine := createPost(team, channel, allUsers, dates[i])
 				encoder.Encode(postLine)
 			}
 		}
@@ -286,8 +297,10 @@ func sampleDataCmdF(command *cobra.Command, args []string) error {
 		user2 := allUsers[rand.Intn(len(allUsers))]
 		channelLine := createDirectChannel([]string{user1, user2})
 		encoder.Encode(channelLine)
+
+		dates := sortedRandomDates(postsPerDirectChannel)
 		for j := 0; j < postsPerDirectChannel; j++ {
-			postLine := createDirectPost([]string{user1, user2})
+			postLine := createDirectPost([]string{user1, user2}, dates[j])
 			encoder.Encode(postLine)
 		}
 	}
@@ -303,8 +316,10 @@ func sampleDataCmdF(command *cobra.Command, args []string) error {
 		}
 		channelLine := createDirectChannel(users)
 		encoder.Encode(channelLine)
+
+		dates := sortedRandomDates(postsPerGroupChannel)
 		for j := 0; j < postsPerGroupChannel; j++ {
-			postLine := createDirectPost(users)
+			postLine := createDirectPost(users, dates[j])
 			encoder.Encode(postLine)
 		}
 	}
@@ -529,9 +544,9 @@ func createChannel(idx int, teamName string) app.LineImportData {
 	}
 }
 
-func createPost(team string, channel string, allUsers []string) app.LineImportData {
+func createPost(team string, channel string, allUsers []string, createAt int64) app.LineImportData {
 	message := randomMessage(allUsers)
-	create_at := randomPastTime(50000)
+	create_at := createAt
 	user := allUsers[rand.Intn(len(allUsers))]
 
 	// Some messages are flagged by an user
@@ -589,9 +604,9 @@ func createDirectChannel(members []string) app.LineImportData {
 	}
 }
 
-func createDirectPost(members []string) app.LineImportData {
+func createDirectPost(members []string, createAt int64) app.LineImportData {
 	message := randomMessage(members)
-	create_at := randomPastTime(50000)
+	create_at := createAt
 	user := members[rand.Intn(len(members))]
 
 	// Some messages are flagged by an user

i18n/en.json

@@ -4910,6 +4910,10 @@
     "id": "store.sql_channel.reset_all_channel_schemes.app_error",
     "translation": "We could not reset the channel schemes"
   },
+  {
+    "id": "store.sql_channel.reset_last_post_at.app_error",
+    "translation": "We could not reset the channel last post at date"
+  },
   {
     "id": "store.sql_channel.save.archived_channel.app_error",
     "translation": "You can not modify an archived channel"

store/sqlstore/channel_store.go

@@ -1921,3 +1921,11 @@ func (s SqlChannelStore) ClearAllCustomRoleAssignments() store.StoreChannel {
 		}
 	})
 }
+
+func (s SqlChannelStore) ResetLastPostAt() store.StoreChannel {
+	return store.Do(func(result *store.StoreResult) {
+		if _, err := s.GetMaster().Exec("UPDATE Channels SET LastPostAt = (SELECT UpdateAt FROM Posts WHERE ChannelId = Channels.Id ORDER BY UpdateAt DESC LIMIT 1);"); err != nil {
+			result.Err = model.NewAppError("SqlChannelStore.ResetLastPostAt", "store.sql_channel.reset_last_post_at.app_error", nil, err.Error(), http.StatusInternalServerError)
+		}
+	})
+}

store/store.go

@@ -172,6 +172,7 @@ type ChannelStore interface {
 	MigrateChannelMembers(fromChannelId string, fromUserId string) StoreChannel
 	ResetAllChannelSchemes() StoreChannel
 	ClearAllCustomRoleAssignments() StoreChannel
+	ResetLastPostAt() StoreChannel
 }
 
 type ChannelMemberHistoryStore interface {

store/storetest/mocks/ChannelStore.go

@@ -711,6 +711,22 @@ func (_m *ChannelStore) ResetAllChannelSchemes() store.StoreChannel {
 	return r0
 }
 
+// ResetLastPostAt provides a mock function with given fields:
+func (_m *ChannelStore) ResetLastPostAt() store.StoreChannel {
+	ret := _m.Called()
+
+	var r0 store.StoreChannel
+	if rf, ok := ret.Get(0).(func() store.StoreChannel); ok {
+		r0 = rf()
+	} else {
+		if ret.Get(0) != nil {
+			r0 = ret.Get(0).(store.StoreChannel)
+		}
+	}
+
+	return r0
+}
+
 // Restore provides a mock function with given fields: channelId, time
 func (_m *ChannelStore) Restore(channelId string, time int64) store.StoreChannel {
 	ret := _m.Called(channelId, time)