Merging performance branch into master (#4268)

* improve performance on sendNotifications

* Fix SQL queries

* Remove get direct profiles, not needed anymore

* Add raw data to error details if AppError fails to decode

* men

* Fix decode (#4052)

* Fixing json decode

* Adding unit test

* Initial work for client scaling (#4051)

* Begin adding paging to profiles API

* Added more paging functionality

* Finish hooking up admin console user lists

* Add API for searching users and add searching to all user lists

* Add lazy loading of profiles

* Revert config.json

* Fix unit tests and some style issues

* Add GetProfilesFromList to Go driver and fix web unit test

* Update etag for GetProfiles

* Updating ui for filters and pagination (#4044)

* Updating UI for pagination

* Adjusting margins for filter row

* Adjusting margin for specific modals

* Adding relative padding to system console

* Adjusting responsive view

* Update client user tests

* Minor fixes for direct messages modal (#4056)

* Remove some unneeded initial load calls (#4057)

* UX updates to user lists, added smart counts and bug fixes (#4059)

* Improved getExplicitMentions and unit tests (#4064)

* Refactor getting posts to lazy load profiles correctly (#4062)

* Comment out SetActiveChannel test (#4066)

* Profiler cpu, block, and memory profiler. (#4081)

* Fix TestSetActiveChannel unit test (#4071)

* Fixing build failure caused by dependancies updating (#4076)

* Adding profiler

* Fix admin_team_member_dropdown eslint errors

* Bumping session cache size (#4077)

* Bumping session cache size

* Bumping status cache

* Refactor how the client handles channel members to be large team friendly (#4106)

* Refactor how the client handles channel members to be large team friendly

* Change Id to ChannelId in ChannelStats model

* Updated getChannelMember and getProfilesByIds routes to match proposal

* Performance improvements (#4100)

* Performance improvements

* Fixing re-connect issue

* Fixing error message

* Some other minor perf tweaks

* Some other minor perf tweaks

* Fixing config file

* Fixing buffer size

* Fixing web socket send message

* adding some error logging

* fix getMe to be user required

* Fix websocket event for new user

* Fixing shutting down

* Reverting web socket changes

* Fixing logging lvl

* Adding caching to GetMember

* Adding some logging

* Fixing caching

* Fixing caching invalidate

* Fixing direct message caching

* Fixing caching

* Fixing caching

* Remove GetDirectProfiles from initial load

* Adding logging and fixing websocket client

* Adding back caching from bad merge.

* Explicitly close go driver requests (#4162)

* Refactored how the client handles team members to be more large team friendly (#4159)

* Refactor getProfilesForDirectMessageList API into getAllProfiles API

* Refactored how the client handles team members to be more large team friendly

* Fix js error when receiving a notification

* Fix JS error caused by current user being overwritten with sanitized version (#4165)

* Adding error message to status failure (#4167)

* Fix a few bugs caused by client scaling refactoring (#4170)

* When there is no read replica, don't open a second set of connections to the master database (#4173)

* Adding connection tacking to stats (#4174)

* Reduce DB writes for statuses and other status related changes (#4175)

* Fix bug preventing opening of DM channels from more modal (#4181)

* 	Fixing socket timing error (#4183)

* Fixing ping/pong handler

* Fixing socket timing error

* Commenting out status broadcasting

* Removing user status changes

* Removing user status changes

* Removing user status changes

* Removing user status changes

* Adding DoPreComputeJson()

* Performance improvements (#4194)

* * Fix System Console Analytics queries
* Add db.SetConnMaxLifetime to 15 minutes
* Add "net/http/pprof" for profiling
* Add FreeOSMemory() to manually release memory on reload config

* Add flag to enable http profiler

* Fix memory leak (#4197)

* Fix memory leak

* removed unneeded nil assignment

* Fixing go routine leak (#4208)

* Merge fixes

* Merge fix

* Refactored statuses to be queried by the client rather than broadcast by the server (#4212)

* Refactored server code to reduce status broadcasts and to allow getting statuses by IDs

* Refactor client code to periodically fetch statuses

* Add store unit test for getting statuses by ids

* Fix status unit test

* Add getStatusesByIds REST API and move the client over to use that instead of the WebSocket

* Adding multiple threads to websocket hub (#4230)

* Adding multiple threads to websocket hub

* Fixing unit tests

* Fixing so websocket connections from the same user end up in the same… (#4240)

* Fixing so websocket connections from the same user end up in the same list

* Removing old comment

* Refactor user autocomplete to query the server (#4239)

* Add API for autocompleting users

* Converted at mention autocomplete to query server

* Converted user search autocomplete to query server

* Switch autocomplete API naming to use term instead of username

* Split autocomplete API into two, one for channels and for teams

* Fix copy/paste error

* Some final client scaling fixes (#4246)

* Add lazy loading of profiles to integration pages

* Add lazy loading of profiles to emoji page

* Fix JS error when receiving post in select team menu and also clean up channel store

1 files changed, 91 insertions, 9 deletions

diff --git a/api/team.go b/api/team.go
index 2be7b8545..c57591d46 100644
--- a/api/team.go
+++ b/api/team.go
@@ -31,9 +31,12 @@ func InitTeam() {
 	BaseRoutes.Teams.Handle("/all_team_listings", ApiUserRequired(GetAllTeamListings)).Methods("GET")
 	BaseRoutes.Teams.Handle("/get_invite_info", ApiAppHandler(getInviteInfo)).Methods("POST")
 	BaseRoutes.Teams.Handle("/find_team_by_name", ApiAppHandler(findTeamByName)).Methods("POST")
-	BaseRoutes.Teams.Handle("/members/{id:[A-Za-z0-9]+}", ApiUserRequired(getMembers)).Methods("GET")
 
 	BaseRoutes.NeedTeam.Handle("/me", ApiUserRequired(getMyTeam)).Methods("GET")
+	BaseRoutes.NeedTeam.Handle("/stats", ApiUserRequired(getTeamStats)).Methods("GET")
+	BaseRoutes.NeedTeam.Handle("/members/{offset:[0-9]+}/{limit:[0-9]+}", ApiUserRequired(getTeamMembers)).Methods("GET")
+	BaseRoutes.NeedTeam.Handle("/members/ids", ApiUserRequired(getTeamMembersByIds)).Methods("POST")
+	BaseRoutes.NeedTeam.Handle("/members/{user_id:[A-Za-z0-9]+}", ApiUserRequired(getTeamMember)).Methods("GET")
 	BaseRoutes.NeedTeam.Handle("/update", ApiUserRequired(updateTeam)).Methods("POST")
 	BaseRoutes.NeedTeam.Handle("/update_member_roles", ApiUserRequired(updateMemberRoles)).Methods("POST")
 
@@ -305,7 +308,9 @@ func JoinUserToTeam(team *model.Team, user *model.User) *model.AppError {
 	InvalidateCacheForUser(user.Id)
 
 	// This message goes to everyone, so the teamId, channelId and userId are irrelevant
-	go Publish(model.NewWebSocketEvent(model.WEBSOCKET_EVENT_NEW_USER, "", "", "", nil))
+	message := model.NewWebSocketEvent(model.WEBSOCKET_EVENT_NEW_USER, "", "", "", nil)
+	message.Add("user_id", user.Id)
+	go Publish(message)
 
 	return nil
 }
@@ -335,11 +340,10 @@ func LeaveTeam(team *model.Team, user *model.User) *model.AppError {
 
 	for _, channel := range channelMembers.Channels {
 		if channel.Type != model.CHANNEL_DIRECT {
+			Srv.Store.User().InvalidateProfilesInChannelCache(channel.Id)
 			if result := <-Srv.Store.Channel().RemoveMember(channel.Id, user.Id); result.Err != nil {
 				return result.Err
 			}
-
-			InvalidateCacheForChannel(channel.Id)
 		}
 	}
 
@@ -889,6 +893,25 @@ func getMyTeam(c *Context, w http.ResponseWriter, r *http.Request) {
 	}
 }
 
+func getTeamStats(c *Context, w http.ResponseWriter, r *http.Request) {
+	if c.Session.GetTeamByTeamId(c.TeamId) == nil {
+		if !HasPermissionToContext(c, model.PERMISSION_MANAGE_SYSTEM) {
+			return
+		}
+	}
+
+	if result := <-Srv.Store.Team().GetMemberCount(c.TeamId); result.Err != nil {
+		c.Err = result.Err
+		return
+	} else {
+		stats := &model.TeamStats{}
+		stats.MemberCount = result.Data.(int64)
+		stats.TeamId = c.TeamId
+		w.Write([]byte(stats.ToJson()))
+		return
+	}
+}
+
 func importTeam(c *Context, w http.ResponseWriter, r *http.Request) {
 	if !HasPermissionToCurrentTeamContext(c, model.PERMISSION_IMPORT_TEAM) {
 		c.Err = model.NewLocAppError("importTeam", "api.team.import_team.admin.app_error", nil, "userId="+c.Session.UserId)
@@ -982,17 +1005,76 @@ func getInviteInfo(c *Context, w http.ResponseWriter, r *http.Request) {
 	}
 }
 
-func getMembers(c *Context, w http.ResponseWriter, r *http.Request) {
+func getTeamMembers(c *Context, w http.ResponseWriter, r *http.Request) {
 	params := mux.Vars(r)
-	id := params["id"]
 
-	if c.Session.GetTeamByTeamId(id) == nil {
-		if !HasPermissionToTeamContext(c, id, model.PERMISSION_MANAGE_SYSTEM) {
+	offset, err := strconv.Atoi(params["offset"])
+	if err != nil {
+		c.SetInvalidParam("getTeamMembers", "offset")
+		return
+	}
+
+	limit, err := strconv.Atoi(params["limit"])
+	if err != nil {
+		c.SetInvalidParam("getTeamMembers", "limit")
+		return
+	}
+
+	if c.Session.GetTeamByTeamId(c.TeamId) == nil {
+		if !HasPermissionToTeamContext(c, c.TeamId, model.PERMISSION_MANAGE_SYSTEM) {
+			return
+		}
+	}
+
+	if result := <-Srv.Store.Team().GetMembers(c.TeamId, offset, limit); result.Err != nil {
+		c.Err = result.Err
+		return
+	} else {
+		members := result.Data.([]*model.TeamMember)
+		w.Write([]byte(model.TeamMembersToJson(members)))
+		return
+	}
+}
+
+func getTeamMember(c *Context, w http.ResponseWriter, r *http.Request) {
+	params := mux.Vars(r)
+
+	userId := params["user_id"]
+	if len(userId) < 26 {
+		c.SetInvalidParam("getTeamMember", "user_id")
+		return
+	}
+
+	if c.Session.GetTeamByTeamId(c.TeamId) == nil {
+		if !HasPermissionToTeamContext(c, c.TeamId, model.PERMISSION_MANAGE_SYSTEM) {
+			return
+		}
+	}
+
+	if result := <-Srv.Store.Team().GetMember(c.TeamId, userId); result.Err != nil {
+		c.Err = result.Err
+		return
+	} else {
+		member := result.Data.(model.TeamMember)
+		w.Write([]byte(member.ToJson()))
+		return
+	}
+}
+
+func getTeamMembersByIds(c *Context, w http.ResponseWriter, r *http.Request) {
+	userIds := model.ArrayFromJson(r.Body)
+	if len(userIds) == 0 {
+		c.SetInvalidParam("getTeamMembersByIds", "user_ids")
+		return
+	}
+
+	if c.Session.GetTeamByTeamId(c.TeamId) == nil {
+		if !HasPermissionToTeamContext(c, c.TeamId, model.PERMISSION_MANAGE_SYSTEM) {
 			return
 		}
 	}
 
-	if result := <-Srv.Store.Team().GetMembers(id); result.Err != nil {
+	if result := <-Srv.Store.Team().GetMembersByIds(c.TeamId, userIds); result.Err != nil {
 		c.Err = result.Err
 		return
 	} else {