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

api/post_test.go

@@ -883,10 +883,9 @@ func TestGetMentionKeywords(t *testing.T) {
 	}
 
 	profiles := map[string]*model.User{user1.Id: user1}
-	members := map[string]string{user1.Id: user1.Id}
-	mentions := getMentionKeywords(profiles, members)
+	mentions := getMentionKeywordsInChannel(profiles)
 	if len(mentions) != 3 {
-		t.Fatal("should've returned two mention keywords")
+		t.Fatal("should've returned three mention keywords")
 	} else if ids, ok := mentions["user"]; !ok || ids[0] != user1.Id {
 		t.Fatal("should've returned mention key of user")
 	} else if ids, ok := mentions["@user"]; !ok || ids[0] != user1.Id {
@@ -906,8 +905,7 @@ func TestGetMentionKeywords(t *testing.T) {
 	}
 
 	profiles = map[string]*model.User{user2.Id: user2}
-	members = map[string]string{user2.Id: user2.Id}
-	mentions = getMentionKeywords(profiles, members)
+	mentions = getMentionKeywordsInChannel(profiles)
 	if len(mentions) != 1 {
 		t.Fatal("should've returned one mention keyword")
 	} else if ids, ok := mentions["First"]; !ok || ids[0] != user2.Id {
@@ -925,8 +923,7 @@ func TestGetMentionKeywords(t *testing.T) {
 	}
 
 	profiles = map[string]*model.User{user3.Id: user3}
-	members = map[string]string{user3.Id: user3.Id}
-	mentions = getMentionKeywords(profiles, members)
+	mentions = getMentionKeywordsInChannel(profiles)
 	if len(mentions) != 2 {
 		t.Fatal("should've returned two mention keywords")
 	} else if ids, ok := mentions["@channel"]; !ok || ids[0] != user3.Id {
@@ -948,8 +945,7 @@ func TestGetMentionKeywords(t *testing.T) {
 	}
 
 	profiles = map[string]*model.User{user4.Id: user4}
-	members = map[string]string{user4.Id: user4.Id}
-	mentions = getMentionKeywords(profiles, members)
+	mentions = getMentionKeywordsInChannel(profiles)
 	if len(mentions) != 6 {
 		t.Fatal("should've returned six mention keywords")
 	} else if ids, ok := mentions["user"]; !ok || ids[0] != user4.Id {
@@ -973,13 +969,7 @@ func TestGetMentionKeywords(t *testing.T) {
 		user3.Id: user3,
 		user4.Id: user4,
 	}
-	members = map[string]string{
-		user1.Id: user1.Id,
-		user2.Id: user2.Id,
-		user3.Id: user3.Id,
-		user4.Id: user4.Id,
-	}
-	mentions = getMentionKeywords(profiles, members)
+	mentions = getMentionKeywordsInChannel(profiles)
 	if len(mentions) != 6 {
 		t.Fatal("should've returned six mention keywords")
 	} else if ids, ok := mentions["user"]; !ok || len(ids) != 2 || (ids[0] != user1.Id && ids[1] != user1.Id) || (ids[0] != user4.Id && ids[1] != user4.Id) {
@@ -995,16 +985,6 @@ func TestGetMentionKeywords(t *testing.T) {
 	} else if ids, ok := mentions["@all"]; !ok || len(ids) != 2 || (ids[0] != user3.Id && ids[1] != user3.Id) || (ids[0] != user4.Id && ids[1] != user4.Id) {
 		t.Fatal("should've mentioned user3 and user4 with @all")
 	}
-
-	// a user that's not in the channel
-	profiles = map[string]*model.User{user4.Id: user4}
-	members = map[string]string{}
-	mentions = getMentionKeywords(profiles, members)
-	if len(mentions) != 1 {
-		t.Fatal("should've returned one mention keyword")
-	} else if ids, ok := mentions["@user"]; !ok || len(ids) != 1 || ids[0] != user4.Id {
-		t.Fatal("should've returned mention key of @user")
-	}
 }
 
 func TestGetExplicitMentionsAtHere(t *testing.T) {
@@ -1051,7 +1031,7 @@ func TestGetExplicitMentionsAtHere(t *testing.T) {
 	}
 
 	for message, shouldMention := range cases {
-		if _, hereMentioned := getExplicitMentions(message, nil); hereMentioned && !shouldMention {
+		if _, _, hereMentioned := getExplicitMentions(message, nil); hereMentioned && !shouldMention {
 			t.Fatalf("shouldn't have mentioned @here with \"%v\"", message)
 		} else if !hereMentioned && shouldMention {
 			t.Fatalf("should've have mentioned @here with \"%v\"", message)
@@ -1060,10 +1040,12 @@ func TestGetExplicitMentionsAtHere(t *testing.T) {
 
 	// mentioning @here and someone
 	id := model.NewId()
-	if mentions, hereMentioned := getExplicitMentions("@here @user", map[string][]string{"@user": {id}}); !hereMentioned {
+	if mentions, potential, hereMentioned := getExplicitMentions("@here @user @potential", map[string][]string{"@user": {id}}); !hereMentioned {
 		t.Fatal("should've mentioned @here with \"@here @user\"")
 	} else if len(mentions) != 1 || !mentions[id] {
 		t.Fatal("should've mentioned @user with \"@here @user\"")
+	} else if len(potential) > 1 {
+		t.Fatal("should've potential mentions for @potential")
 	}
 }
 
@@ -1074,69 +1056,76 @@ func TestGetExplicitMentions(t *testing.T) {
 	// not mentioning anybody
 	message := "this is a message"
 	keywords := map[string][]string{}
-	if mentions, _ := getExplicitMentions(message, keywords); len(mentions) != 0 {
-		t.Fatal("shouldn't have mentioned anybody")
+	if mentions, potential, _ := getExplicitMentions(message, keywords); len(mentions) != 0 || len(potential) != 0 {
+		t.Fatal("shouldn't have mentioned anybody or have any potencial mentions")
 	}
 
 	// mentioning a user that doesn't exist
 	message = "this is a message for @user"
-	if mentions, _ := getExplicitMentions(message, keywords); len(mentions) != 0 {
+	if mentions, _, _ := getExplicitMentions(message, keywords); len(mentions) != 0 {
 		t.Fatal("shouldn't have mentioned user that doesn't exist")
 	}
 
 	// mentioning one person
 	keywords = map[string][]string{"@user": {id1}}
-	if mentions, _ := getExplicitMentions(message, keywords); len(mentions) != 1 || !mentions[id1] {
+	if mentions, _, _ := getExplicitMentions(message, keywords); len(mentions) != 1 || !mentions[id1] {
 		t.Fatal("should've mentioned @user")
 	}
 
 	// mentioning one person without an @mention
 	message = "this is a message for @user"
 	keywords = map[string][]string{"this": {id1}}
-	if mentions, _ := getExplicitMentions(message, keywords); len(mentions) != 1 || !mentions[id1] {
+	if mentions, _, _ := getExplicitMentions(message, keywords); len(mentions) != 1 || !mentions[id1] {
 		t.Fatal("should've mentioned this")
 	}
 
 	// mentioning multiple people with one word
 	message = "this is a message for @user"
 	keywords = map[string][]string{"@user": {id1, id2}}
-	if mentions, _ := getExplicitMentions(message, keywords); len(mentions) != 2 || !mentions[id1] || !mentions[id2] {
+	if mentions, _, _ := getExplicitMentions(message, keywords); len(mentions) != 2 || !mentions[id1] || !mentions[id2] {
 		t.Fatal("should've mentioned two users with @user")
 	}
 
 	// mentioning only one of multiple people
 	keywords = map[string][]string{"@user": {id1}, "@mention": {id2}}
-	if mentions, _ := getExplicitMentions(message, keywords); len(mentions) != 1 || !mentions[id1] || mentions[id2] {
+	if mentions, _, _ := getExplicitMentions(message, keywords); len(mentions) != 1 || !mentions[id1] || mentions[id2] {
 		t.Fatal("should've mentioned @user and not @mention")
 	}
 
 	// mentioning multiple people with multiple words
 	message = "this is an @mention for @user"
 	keywords = map[string][]string{"@user": {id1}, "@mention": {id2}}
-	if mentions, _ := getExplicitMentions(message, keywords); len(mentions) != 2 || !mentions[id1] || !mentions[id2] {
+	if mentions, _, _ := getExplicitMentions(message, keywords); len(mentions) != 2 || !mentions[id1] || !mentions[id2] {
 		t.Fatal("should've mentioned two users with @user and @mention")
 	}
 
 	// mentioning @channel (not a special case, but it's good to double check)
 	message = "this is an message for @channel"
 	keywords = map[string][]string{"@channel": {id1, id2}}
-	if mentions, _ := getExplicitMentions(message, keywords); len(mentions) != 2 || !mentions[id1] || !mentions[id2] {
+	if mentions, _, _ := getExplicitMentions(message, keywords); len(mentions) != 2 || !mentions[id1] || !mentions[id2] {
 		t.Fatal("should've mentioned two users with @channel")
 	}
 
 	// mentioning @all (not a special case, but it's good to double check)
 	message = "this is an message for @all"
 	keywords = map[string][]string{"@all": {id1, id2}}
-	if mentions, _ := getExplicitMentions(message, keywords); len(mentions) != 2 || !mentions[id1] || !mentions[id2] {
+	if mentions, _, _ := getExplicitMentions(message, keywords); len(mentions) != 2 || !mentions[id1] || !mentions[id2] {
 		t.Fatal("should've mentioned two users with @all")
 	}
 
 	// mentioning user.period without mentioning user (PLT-3222)
 	message = "user.period doesn't complicate things at all by including periods in their username"
 	keywords = map[string][]string{"user.period": {id1}, "user": {id2}}
-	if mentions, _ := getExplicitMentions(message, keywords); len(mentions) != 1 || !mentions[id1] || mentions[id2] {
+	if mentions, _, _ := getExplicitMentions(message, keywords); len(mentions) != 1 || !mentions[id1] || mentions[id2] {
 		t.Fatal("should've mentioned user.period and not user")
 	}
+
+	// mentioning a potential out of channel user
+	message = "this is an message for @potential and @user"
+	keywords = map[string][]string{"@user": {id1}}
+	if mentions, potential, _ := getExplicitMentions(message, keywords); len(mentions) != 1 || !mentions[id1] || len(potential) != 1 {
+		t.Fatal("should've mentioned user and have a potential not in channel")
+	}
 }
 
 func TestGetFlaggedPosts(t *testing.T) {