MM-43144: Add teams loader (#19960)

```release-note
NONE
```

Co-authored-by: Mattermod <mattermod@users.noreply.github.com>

store/opentracinglayer/opentracinglayer.go

@@ -8624,6 +8624,24 @@ func (s *OpenTracingLayerTeamStore) GetCommonTeamIDsForTwoUsers(userID string, o
 	return result, err
 }
 
+func (s *OpenTracingLayerTeamStore) GetMany(ids []string) ([]*model.Team, error) {
+	origCtx := s.Root.Store.Context()
+	span, newCtx := tracing.StartSpanWithParentByContext(s.Root.Store.Context(), "TeamStore.GetMany")
+	s.Root.Store.SetContext(newCtx)
+	defer func() {
+		s.Root.Store.SetContext(origCtx)
+	}()
+
+	defer span.Finish()
+	result, err := s.TeamStore.GetMany(ids)
+	if err != nil {
+		span.LogFields(spanlog.Error(err))
+		ext.Error.Set(span, true)
+	}
+
+	return result, err
+}
+
 func (s *OpenTracingLayerTeamStore) GetMember(ctx context.Context, teamID string, userID string) (*model.TeamMember, error) {
 	origCtx := s.Root.Store.Context()
 	span, newCtx := tracing.StartSpanWithParentByContext(s.Root.Store.Context(), "TeamStore.GetMember")

store/retrylayer/retrylayer.go

@@ -9841,6 +9841,27 @@ func (s *RetryLayerTeamStore) GetCommonTeamIDsForTwoUsers(userID string, otherUs
 
 }
 
+func (s *RetryLayerTeamStore) GetMany(ids []string) ([]*model.Team, error) {
+
+	tries := 0
+	for {
+		result, err := s.TeamStore.GetMany(ids)
+		if err == nil {
+			return result, nil
+		}
+		if !isRepeatableError(err) {
+			return result, err
+		}
+		tries++
+		if tries >= 3 {
+			err = errors.Wrap(err, "giving up after 3 consecutive repeatable transaction failures")
+			return result, err
+		}
+		timepkg.Sleep(100 * timepkg.Millisecond)
+	}
+
+}
+
 func (s *RetryLayerTeamStore) GetMember(ctx context.Context, teamID string, userID string) (*model.TeamMember, error) {
 
 	tries := 0

store/sqlstore/team_store.go

@@ -303,6 +303,29 @@ func (s SqlTeamStore) Get(id string) (*model.Team, error) {
 	return &team, nil
 }
 
+func (s SqlTeamStore) GetMany(ids []string) ([]*model.Team, error) {
+	query := s.getQueryBuilder().
+		Select("*").
+		From("Teams").
+		Where(sq.Eq{"Id": ids})
+	sql, args, err := query.ToSql()
+	if err != nil {
+		return nil, errors.Wrapf(err, "getmany_tosql")
+	}
+
+	teams := []*model.Team{}
+	err = s.GetReplicaX().Select(&teams, sql, args...)
+	if err != nil {
+		return nil, errors.Wrapf(err, "failed to get teams with ids %v", ids)
+	}
+
+	if len(teams) == 0 {
+		return nil, store.NewErrNotFound("Team", fmt.Sprintf("ids=%v", ids))
+	}
+
+	return teams, nil
+}
+
 // GetByInviteId returns from the database the team that matches the inviteId provided as parameter.
 // If the parameter provided is empty or if there is no match in the database, it returns a model.AppError
 // with a http.StatusNotFound in the StatusCode field.

store/store.go

@@ -102,6 +102,7 @@ type TeamStore interface {
 	Save(team *model.Team) (*model.Team, error)
 	Update(team *model.Team) (*model.Team, error)
 	Get(id string) (*model.Team, error)
+	GetMany(ids []string) ([]*model.Team, error)
 	GetByName(name string) (*model.Team, error)
 	GetByNames(name []string) ([]*model.Team, error)
 	SearchAll(opts *model.TeamSearch) ([]*model.Team, error)

store/storetest/mocks/TeamStore.go

@@ -374,6 +374,29 @@ func (_m *TeamStore) GetCommonTeamIDsForTwoUsers(userID string, otherUserID stri
 	return r0, r1
 }
 
+// GetMany provides a mock function with given fields: ids
+func (_m *TeamStore) GetMany(ids []string) ([]*model.Team, error) {
+	ret := _m.Called(ids)
+
+	var r0 []*model.Team
+	if rf, ok := ret.Get(0).(func([]string) []*model.Team); ok {
+		r0 = rf(ids)
+	} else {
+		if ret.Get(0) != nil {
+			r0 = ret.Get(0).([]*model.Team)
+		}
+	}
+
+	var r1 error
+	if rf, ok := ret.Get(1).(func([]string) error); ok {
+		r1 = rf(ids)
+	} else {
+		r1 = ret.Error(1)
+	}
+
+	return r0, r1
+}
+
 // GetMember provides a mock function with given fields: ctx, teamID, userID
 func (_m *TeamStore) GetMember(ctx context.Context, teamID string, userID string) (*model.TeamMember, error) {
 	ret := _m.Called(ctx, teamID, userID)

store/storetest/team_store.go

@@ -31,6 +31,7 @@ func TestTeamStore(t *testing.T, ss store.Store) {
 	t.Run("Save", func(t *testing.T) { testTeamStoreSave(t, ss) })
 	t.Run("Update", func(t *testing.T) { testTeamStoreUpdate(t, ss) })
 	t.Run("Get", func(t *testing.T) { testTeamStoreGet(t, ss) })
+	t.Run("GetMany", func(t *testing.T) { testTeamStoreGetMany(t, ss) })
 	t.Run("GetByName", func(t *testing.T) { testTeamStoreGetByName(t, ss) })
 	t.Run("GetByNames", func(t *testing.T) { testTeamStoreGetByNames(t, ss) })
 	t.Run("SearchAll", func(t *testing.T) { testTeamStoreSearchAll(t, ss) })
@@ -132,6 +133,37 @@ func testTeamStoreGet(t *testing.T, ss store.Store) {
 	require.Error(t, err, "Missing id should have failed")
 }
 
+func testTeamStoreGetMany(t *testing.T, ss store.Store) {
+	o1, err := ss.Team().Save(&model.Team{
+		DisplayName: "DisplayName",
+		Name:        NewTestId(),
+		Email:       MakeEmail(),
+		Type:        model.TeamOpen,
+	})
+	require.NoError(t, err)
+
+	o2, err := ss.Team().Save(&model.Team{
+		DisplayName: "DisplayName2",
+		Name:        NewTestId(),
+		Email:       MakeEmail(),
+		Type:        model.TeamOpen,
+	})
+	require.NoError(t, err)
+
+	res, err := ss.Team().GetMany([]string{o1.Id, o2.Id})
+	require.NoError(t, err)
+	assert.Len(t, res, 2)
+
+	res, err = ss.Team().GetMany([]string{o1.Id, "notexists"})
+	require.NoError(t, err)
+	assert.Len(t, res, 1)
+
+	_, err = ss.Team().GetMany([]string{"whereisit", "notexists"})
+	require.Error(t, err)
+	var nfErr *store.ErrNotFound
+	assert.True(t, errors.As(err, &nfErr))
+}
+
 func testTeamStoreGetByNames(t *testing.T, ss store.Store) {
 	o1 := model.Team{}
 	o1.DisplayName = "DisplayName"

store/timerlayer/timerlayer.go

@@ -7768,6 +7768,22 @@ func (s *TimerLayerTeamStore) GetCommonTeamIDsForTwoUsers(userID string, otherUs
 	return result, err
 }
 
+func (s *TimerLayerTeamStore) GetMany(ids []string) ([]*model.Team, error) {
+	start := timemodule.Now()
+
+	result, err := s.TeamStore.GetMany(ids)
+
+	elapsed := float64(timemodule.Since(start)) / float64(timemodule.Second)
+	if s.Root.Metrics != nil {
+		success := "false"
+		if err == nil {
+			success = "true"
+		}
+		s.Root.Metrics.ObserveStoreMethodDuration("TeamStore.GetMany", success, elapsed)
+	}
+	return result, err
+}
+
 func (s *TimerLayerTeamStore) GetMember(ctx context.Context, teamID string, userID string) (*model.TeamMember, error) {
 	start := timemodule.Now()