Adding the new search engine abstraction (#13304)

* WIP

* Adding bleve to go modules

* WIP

* Adding missing files from searchengine implementation

* WIP

* WIP

* WIP

* WIP

* WIP

* WIP

* User and channel indexing and searches implemented

* Make bleve tests run with in-memory indexes

* Implement post index and deletion tests

* Initial commits for the search layer

* Removing unnecesary indexing

* WIP

* WIP

* More fixes for tests

* Adding the search layer

* Finishing the migration of searchers to the layer

* Removing unnecesary code

* Allowing multiple engines active at the same time

* WIP

* Add simple post search

* Print information when using bleve

* Adding some debugging to understand better how the searches are working

* Making more dynamic config of search engines

* Add post search basics

* Adding the Purge API endpoint

* Fixing bleve config updates

* Adding missed file

* Regenerating search engine mocks

* Adding missed v5 to modules imports

* fixing i18n

* Fixing some test around search engine

* Removing all bleve traces

* Cleaning up the vendors directory and go.mod/go.sum files

* Regenerating timer layer

* Adding properly the license

* Fixing govet shadow error

* Fixing some tests

* Fixing TestSearchPostsFromUser

* Fixing another test

* Fixing more tests

* Fixing more tests

* Removing SearchEngine redundant text from searchengine module code

* Fixing some reindexing problems in members updates

* Fixing tests

* Addressing PR comments

* Reverting go.mod and go.sum

* Addressing PR comments

* Fixing tests compilation

* Fixing govet

* Adding search engine stop method

* Being more explicit on where we use includeDeleted

* Adding GetSqlSupplier test helper method

* Mocking elasticsearch start function

* Fixing tests

Co-authored-by: Miguel de la Cruz <miguel@mcrx.me>
Co-authored-by: mattermod <mattermod@users.noreply.github.com>

app/team.go

@@ -489,7 +489,7 @@ func (a *App) AddUserToTeamByToken(userId string, tokenId string) (*model.Team,
 	}
 
 	if token.Type == TOKEN_TYPE_GUEST_INVITATION {
-		channels, err := a.Srv().Store.Channel().GetChannelsByIds(strings.Split(tokenData["channels"], " "))
+		channels, err := a.Srv().Store.Channel().GetChannelsByIds(strings.Split(tokenData["channels"], " "), false)
 		if err != nil {
 			return nil, err
 		}
@@ -944,15 +944,6 @@ func (a *App) RemoveTeamMemberFromTeam(teamMember *model.TeamMember, requestorId
 		})
 	}
 
-	esInterface := a.Elasticsearch()
-	if esInterface != nil && *a.Config().ElasticsearchSettings.EnableIndexing {
-		a.Srv().Go(func() {
-			if err := a.indexUser(user); err != nil {
-				mlog.Error("Encountered error indexing user", mlog.String("user_id", user.Id), mlog.Err(err))
-			}
-		})
-	}
-
 	if _, err := a.Srv().Store.User().UpdateUpdateAt(user.Id); err != nil {
 		return err
 	}
@@ -1135,7 +1126,7 @@ func (a *App) prepareInviteGuestsToChannels(teamId string, guestsInvite *model.G
 	}()
 	cchan := make(chan store.StoreResult, 1)
 	go func() {
-		channels, err := a.Srv().Store.Channel().GetChannelsByIds(guestsInvite.Channels)
+		channels, err := a.Srv().Store.Channel().GetChannelsByIds(guestsInvite.Channels, false)
 		cchan <- store.StoreResult{Data: channels, Err: err}
 		close(cchan)
 	}()