Simplify comparison to bool constant (gosimple)

This fixes:
build.go:553:6: should omit comparison to bool constant, can be simplified to !strings.Contains(path, ".sha256") (S1002)
pkg/cmd/grafana-cli/commands/ls_command.go:27:5: should omit comparison to bool constant, can be simplified to !pluginDirInfo.IsDir() (S1002)
pkg/components/dynmap/dynmap_test.go:24:5: should omit comparison to bool constant, can be simplified to !value (S1002)
pkg/components/dynmap/dynmap_test.go:122:14: should omit comparison to bool constant, can be simplified to b (S1002)
pkg/components/dynmap/dynmap_test.go:125:14: should omit comparison to bool constant, can be simplified to !b (S1002)
pkg/components/dynmap/dynmap_test.go:128:14: should omit comparison to bool constant, can be simplified to !b (S1002)
pkg/models/org_user.go:51:5: should omit comparison to bool constant, can be simplified to !(*r).IsValid() (S1002)
pkg/plugins/datasource/wrapper/datasource_plugin_wrapper_test.go:77:12: should omit comparison to bool constant, can be simplified to !haveBool (S1002)
pkg/services/alerting/conditions/evaluator.go:23:9: should omit comparison to bool constant, can be simplified to !reducedValue.Valid (S1002)
pkg/services/alerting/conditions/evaluator.go:48:5: should omit comparison to bool constant, can be simplified to !reducedValue.Valid (S1002)
pkg/services/alerting/conditions/evaluator.go:91:5: should omit comparison to bool constant, can be simplified to !reducedValue.Valid (S1002)
pkg/services/alerting/conditions/query.go:56:6: should omit comparison to bool constant, can be simplified to !reducedValue.Valid (S1002)
pkg/services/alerting/extractor.go:107:20: should omit comparison to bool constant, can be simplified to !enabled.MustBool() (S1002)
pkg/services/alerting/notifiers/telegram.go:222:41: should omit comparison to bool constant, can be simplified to this.UploadImage (S1002)
pkg/services/sqlstore/apikey.go:58:12: should omit comparison to bool constant, can be simplified to !has (S1002)
pkg/services/sqlstore/apikey.go:72:12: should omit comparison to bool constant, can be simplified to !has (S1002)
pkg/services/sqlstore/dashboard.go:66:33: should omit comparison to bool constant, can be simplified to !cmd.Overwrite (S1002)
pkg/services/sqlstore/dashboard.go:175:12: should omit comparison to bool constant, can be simplified to !has (S1002)
pkg/services/sqlstore/dashboard.go:311:13: should omit comparison to bool constant, can be simplified to !has (S1002)
pkg/services/sqlstore/dashboard.go:444:12: should omit comparison to bool constant, can be simplified to !exists (S1002)
pkg/services/sqlstore/dashboard.go:472:12: should omit comparison to bool constant, can be simplified to !exists (S1002)
pkg/services/sqlstore/dashboard.go:554:32: should omit comparison to bool constant, can be simplified to !cmd.Overwrite (S1002)
pkg/services/sqlstore/dashboard_snapshot.go:83:12: should omit comparison to bool constant, can be simplified to !has (S1002)
pkg/services/sqlstore/plugin_setting.go:39:12: should omit comparison to bool constant, can be simplified to !has (S1002)
pkg/services/sqlstore/quota.go:34:12: should omit comparison to bool constant, can be simplified to !has (S1002)
pkg/services/sqlstore/quota.go:111:6: should omit comparison to bool constant, can be simplified to !has (S1002)
pkg/services/sqlstore/quota.go:136:12: should omit comparison to bool constant, can be simplified to !has (S1002)
pkg/services/sqlstore/quota.go:213:6: should omit comparison to bool constant, can be simplified to !has (S1002)
pkg/services/sqlstore/temp_user.go:129:12: should omit comparison to bool constant, can be simplified to !has (S1002)
pkg/services/sqlstore/user.go:157:12: should omit comparison to bool constant, can be simplified to !has (S1002)
pkg/services/sqlstore/user.go:182:5: should omit comparison to bool constant, can be simplified to !has (S1002)
pkg/services/sqlstore/user.go:191:12: should omit comparison to bool constant, can be simplified to !has (S1002)
pkg/services/sqlstore/user.go:212:12: should omit comparison to bool constant, can be simplified to !has (S1002)
pkg/services/sqlstore/user.go:307:12: should omit comparison to bool constant, can be simplified to !has (S1002)
pkg/social/generic_oauth.go:185:5: should omit comparison to bool constant, can be simplified to !s.extractToken(&data, token) (S1002)
pkg/tsdb/mssql/mssql.go:148:39: should omit comparison to bool constant, can be simplified to ok (S1002)
pkg/tsdb/mssql/mssql.go:212:6: should omit comparison to bool constant, can be simplified to !query.Model.Get("fillNull").MustBool(false) (S1002)
pkg/tsdb/mssql/mssql.go:247:56: should omit comparison to bool constant, can be simplified to ok (S1002)
pkg/tsdb/mssql/mssql.go:274:7: should omit comparison to bool constant, can be simplified to !exist (S1002)
pkg/tsdb/mssql/mssql.go:282:8: should omit comparison to bool constant, can be simplified to !exist (S1002)
pkg/tsdb/mysql/mysql.go:221:6: should omit comparison to bool constant, can be simplified to !query.Model.Get("fillNull").MustBool(false) (S1002)
pkg/tsdb/mysql/mysql.go:256:56: should omit comparison to bool constant, can be simplified to ok (S1002)
pkg/tsdb/mysql/mysql.go:283:7: should omit comparison to bool constant, can be simplified to !exist (S1002)
pkg/tsdb/mysql/mysql.go:291:8: should omit comparison to bool constant, can be simplified to !exist (S1002)
pkg/tsdb/postgres/postgres.go:134:39: should omit comparison to bool constant, can be simplified to ok (S1002)
pkg/tsdb/postgres/postgres.go:201:6: should omit comparison to bool constant, can be simplified to !query.Model.Get("fillNull").MustBool(false) (S1002)
pkg/tsdb/postgres/postgres.go:236:56: should omit comparison to bool constant, can be simplified to ok (S1002)
pkg/tsdb/postgres/postgres.go:263:7: should omit comparison to bool constant, can be simplified to !exist (S1002)
pkg/tsdb/postgres/postgres.go:271:8: should omit comparison to bool constant, can be simplified to !exist (S1002)

build.go

@@ -550,7 +550,7 @@ func shaFilesInDist() {
 			return nil
 		}
 
-		if strings.Contains(path, ".sha256") == false {
+		if !strings.Contains(path, ".sha256") {
 			err := shaFile(path)
 			if err != nil {
 				log.Printf("Failed to create sha file. error: %v\n", err)

pkg/cmd/grafana-cli/commands/ls_command.go

@@ -24,7 +24,7 @@ var validateLsCommand = func(pluginDir string) error {
 		return fmt.Errorf("error: %s", err)
 	}
 
-	if pluginDirInfo.IsDir() == false {
+	if !pluginDirInfo.IsDir() {
 		return errors.New("plugin path is not a directory")
 	}
 

pkg/components/dynmap/dynmap_test.go

@@ -21,7 +21,7 @@ func NewAssert(t *testing.T) *Assert {
 }
 
 func (assert *Assert) True(value bool, message string) {
-	if value == false {
+	if !value {
 		log.Panicln("Assert: ", message)
 	}
 }
@@ -119,13 +119,13 @@ func TestFirst(t *testing.T) {
 	assert.True(s == "" && err != nil, "nonexistent string fail")
 
 	b, err := j.GetBoolean("true")
-	assert.True(b == true && err == nil, "bool true test")
+	assert.True(b && err == nil, "bool true test")
 
 	b, err = j.GetBoolean("false")
-	assert.True(b == false && err == nil, "bool false test")
+	assert.True(!b && err == nil, "bool false test")
 
 	b, err = j.GetBoolean("invalid_field")
-	assert.True(b == false && err != nil, "bool invalid test")
+	assert.True(!b && err != nil, "bool invalid test")
 
 	list, err := j.GetValueArray("list")
 	assert.True(list != nil && err == nil, "list should be an array")

pkg/models/org_user.go

@@ -48,7 +48,7 @@ func (r *RoleType) UnmarshalJSON(data []byte) error {
 
 	*r = RoleType(str)
 
-	if (*r).IsValid() == false {
+	if !(*r).IsValid() {
 		if (*r) != "" {
 			return errors.New(fmt.Sprintf("JSON validation error: invalid role value: %s", *r))
 		}

pkg/plugins/datasource/wrapper/datasource_plugin_wrapper_test.go

@@ -74,7 +74,7 @@ func TestMappingRowValue(t *testing.T) {
 
 	boolRowValue, _ := dpw.mapRowValue(&datasource.RowValue{Kind: datasource.RowValue_TYPE_BOOL, BoolValue: true})
 	haveBool, ok := boolRowValue.(bool)
-	if !ok || haveBool != true {
+	if !ok || !haveBool {
 		t.Fatalf("Expected true, was %v", haveBool)
 	}
 

pkg/services/alerting/conditions/evaluator.go

@@ -20,7 +20,7 @@ type AlertEvaluator interface {
 type NoValueEvaluator struct{}
 
 func (e *NoValueEvaluator) Eval(reducedValue null.Float) bool {
-	return reducedValue.Valid == false
+	return !reducedValue.Valid
 }
 
 type ThresholdEvaluator struct {
@@ -45,7 +45,7 @@ func newThresholdEvaluator(typ string, model *simplejson.Json) (*ThresholdEvalua
 }
 
 func (e *ThresholdEvaluator) Eval(reducedValue null.Float) bool {
-	if reducedValue.Valid == false {
+	if !reducedValue.Valid {
 		return false
 	}
 
@@ -88,7 +88,7 @@ func newRangedEvaluator(typ string, model *simplejson.Json) (*RangedEvaluator, e
 }
 
 func (e *RangedEvaluator) Eval(reducedValue null.Float) bool {
-	if reducedValue.Valid == false {
+	if !reducedValue.Valid {
 		return false
 	}
 

pkg/services/alerting/conditions/query.go

@@ -53,7 +53,7 @@ func (c *QueryCondition) Eval(context *alerting.EvalContext) (*alerting.Conditio
 		reducedValue := c.Reducer.Reduce(series)
 		evalMatch := c.Evaluator.Eval(reducedValue)
 
-		if reducedValue.Valid == false {
+		if !reducedValue.Valid {
 			emptySerieCount++
 		}
 

pkg/services/alerting/extractor.go

@@ -104,7 +104,7 @@ func (e *DashAlertExtractor) getAlertFromPanels(jsonWithPanels *simplejson.Json,
 
 		// backward compatibility check, can be removed later
 		enabled, hasEnabled := jsonAlert.CheckGet("enabled")
-		if hasEnabled && enabled.MustBool() == false {
+		if hasEnabled && !enabled.MustBool() {
 			continue
 		}
 

pkg/services/alerting/notifiers/telegram.go

@@ -219,7 +219,7 @@ func appendIfPossible(message string, extra string, sizeLimit int) string {
 
 func (this *TelegramNotifier) Notify(evalContext *alerting.EvalContext) error {
 	var cmd *m.SendWebhookSync
-	if evalContext.ImagePublicUrl == "" && this.UploadImage == true {
+	if evalContext.ImagePublicUrl == "" && this.UploadImage {
 		cmd = this.buildMessage(evalContext, true)
 	} else {
 		cmd = this.buildMessage(evalContext, false)

pkg/services/sqlstore/apikey.go

@@ -55,7 +55,7 @@ func GetApiKeyById(query *m.GetApiKeyByIdQuery) error {
 
 	if err != nil {
 		return err
-	} else if has == false {
+	} else if !has {
 		return m.ErrInvalidApiKey
 	}
 
@@ -69,7 +69,7 @@ func GetApiKeyByName(query *m.GetApiKeyByNameQuery) error {
 
 	if err != nil {
 		return err
-	} else if has == false {
+	} else if !has {
 		return m.ErrInvalidApiKey
 	}
 

pkg/services/sqlstore/dashboard.go

@@ -63,7 +63,7 @@ func saveDashboard(sess *DBSession, cmd *m.SaveDashboardCommand) error {
 		}
 
 		// do not allow plugin dashboard updates without overwrite flag
-		if existing.PluginId != "" && cmd.Overwrite == false {
+		if existing.PluginId != "" && !cmd.Overwrite {
 			return m.UpdatePluginDashboardError{PluginId: existing.PluginId}
 		}
 	}
@@ -172,7 +172,7 @@ func GetDashboard(query *m.GetDashboardQuery) error {
 
 	if err != nil {
 		return err
-	} else if has == false {
+	} else if !has {
 		return m.ErrDashboardNotFound
 	}
 
@@ -308,7 +308,7 @@ func DeleteDashboard(cmd *m.DeleteDashboardCommand) error {
 		has, err := sess.Get(&dashboard)
 		if err != nil {
 			return err
-		} else if has == false {
+		} else if !has {
 			return m.ErrDashboardNotFound
 		}
 
@@ -441,7 +441,7 @@ func GetDashboardSlugById(query *m.GetDashboardSlugByIdQuery) error {
 
 	if err != nil {
 		return err
-	} else if exists == false {
+	} else if !exists {
 		return m.ErrDashboardNotFound
 	}
 
@@ -469,7 +469,7 @@ func GetDashboardUIDById(query *m.GetDashboardRefByIdQuery) error {
 
 	if err != nil {
 		return err
-	} else if exists == false {
+	} else if !exists {
 		return m.ErrDashboardNotFound
 	}
 
@@ -551,7 +551,7 @@ func getExistingDashboardByIdOrUidForUpdate(sess *DBSession, cmd *m.ValidateDash
 	}
 
 	// do not allow plugin dashboard updates without overwrite flag
-	if existing.PluginId != "" && cmd.Overwrite == false {
+	if existing.PluginId != "" && !cmd.Overwrite {
 		return m.UpdatePluginDashboardError{PluginId: existing.PluginId}
 	}
 

pkg/services/sqlstore/dashboard_snapshot.go

@@ -80,7 +80,7 @@ func GetDashboardSnapshot(query *m.GetDashboardSnapshotQuery) error {
 
 	if err != nil {
 		return err
-	} else if has == false {
+	} else if !has {
 		return m.ErrDashboardSnapshotNotFound
 	}
 

pkg/services/sqlstore/plugin_setting.go

@@ -36,7 +36,7 @@ func GetPluginSettingById(query *m.GetPluginSettingByIdQuery) error {
 	has, err := x.Get(&pluginSetting)
 	if err != nil {
 		return err
-	} else if has == false {
+	} else if !has {
 		return m.ErrPluginSettingNotFound
 	}
 	query.Result = &pluginSetting

pkg/services/sqlstore/quota.go

@@ -31,7 +31,7 @@ func GetOrgQuotaByTarget(query *m.GetOrgQuotaByTargetQuery) error {
 	has, err := x.Get(&quota)
 	if err != nil {
 		return err
-	} else if has == false {
+	} else if !has {
 		quota.Limit = query.Default
 	}
 
@@ -108,7 +108,7 @@ func UpdateOrgQuota(cmd *m.UpdateOrgQuotaCmd) error {
 			return err
 		}
 		quota.Limit = cmd.Limit
-		if has == false {
+		if !has {
 			quota.Created = time.Now()
 			//No quota in the DB for this target, so create a new one.
 			if _, err := sess.Insert(&quota); err != nil {
@@ -133,7 +133,7 @@ func GetUserQuotaByTarget(query *m.GetUserQuotaByTargetQuery) error {
 	has, err := x.Get(&quota)
 	if err != nil {
 		return err
-	} else if has == false {
+	} else if !has {
 		quota.Limit = query.Default
 	}
 
@@ -210,7 +210,7 @@ func UpdateUserQuota(cmd *m.UpdateUserQuotaCmd) error {
 			return err
 		}
 		quota.Limit = cmd.Limit
-		if has == false {
+		if !has {
 			quota.Created = time.Now()
 			//No quota in the DB for this target, so create a new one.
 			if _, err := sess.Insert(&quota); err != nil {

pkg/services/sqlstore/temp_user.go

@@ -126,7 +126,7 @@ func GetTempUserByCode(query *m.GetTempUserByCodeQuery) error {
 
 	if err != nil {
 		return err
-	} else if has == false {
+	} else if !has {
 		return m.ErrTempUserNotFound
 	}
 

pkg/services/sqlstore/user.go

@@ -154,7 +154,7 @@ func GetUserById(query *m.GetUserByIdQuery) error {
 
 	if err != nil {
 		return err
-	} else if has == false {
+	} else if !has {
 		return m.ErrUserNotFound
 	}
 
@@ -179,7 +179,7 @@ func GetUserByLogin(query *m.GetUserByLoginQuery) error {
 		return err
 	}
 
-	if has == false && strings.Contains(query.LoginOrEmail, "@") {
+	if !has && strings.Contains(query.LoginOrEmail, "@") {
 		// If the user wasn't found, and it contains an "@" fallback to finding the
 		// user by email.
 		user = &m.User{Email: query.LoginOrEmail}
@@ -188,7 +188,7 @@ func GetUserByLogin(query *m.GetUserByLoginQuery) error {
 
 	if err != nil {
 		return err
-	} else if has == false {
+	} else if !has {
 		return m.ErrUserNotFound
 	}
 
@@ -209,7 +209,7 @@ func GetUserByEmail(query *m.GetUserByEmailQuery) error {
 
 	if err != nil {
 		return err
-	} else if has == false {
+	} else if !has {
 		return m.ErrUserNotFound
 	}
 
@@ -304,7 +304,7 @@ func GetUserProfile(query *m.GetUserProfileQuery) error {
 
 	if err != nil {
 		return err
-	} else if has == false {
+	} else if !has {
 		return m.ErrUserNotFound
 	}
 

pkg/social/generic_oauth.go

@@ -182,7 +182,7 @@ func (s *SocialGenericOAuth) UserInfo(client *http.Client, token *oauth2.Token)
 	var data UserInfoJson
 	var err error
 
-	if s.extractToken(&data, token) != true {
+	if !s.extractToken(&data, token) {
 		response, err := HttpGet(client, s.apiUrl)
 		if err != nil {
 			return nil, fmt.Errorf("Error getting user info: %s", err)

pkg/tsdb/mssql/mssql.go

@@ -145,7 +145,7 @@ func (e MssqlQueryEndpoint) getTypedRowData(types []*sql.ColumnType, rows *core.
 	// convert types not handled by denisenkom/go-mssqldb
 	// unhandled types are returned as []byte
 	for i := 0; i < len(types); i++ {
-		if value, ok := values[i].([]byte); ok == true {
+		if value, ok := values[i].([]byte); ok {
 			switch types[i].DatabaseTypeName() {
 			case "MONEY", "SMALLMONEY", "DECIMAL":
 				if v, err := strconv.ParseFloat(string(value), 64); err == nil {
@@ -209,7 +209,7 @@ func (e MssqlQueryEndpoint) transformToTimeSeries(query *tsdb.Query, rows *core.
 	fillValue := null.Float{}
 	if fillMissing {
 		fillInterval = query.Model.Get("fillInterval").MustFloat64() * 1000
-		if query.Model.Get("fillNull").MustBool(false) == false {
+		if !query.Model.Get("fillNull").MustBool(false) {
 			fillValue.Float64 = query.Model.Get("fillValue").MustFloat64()
 			fillValue.Valid = true
 		}
@@ -244,7 +244,7 @@ func (e MssqlQueryEndpoint) transformToTimeSeries(query *tsdb.Query, rows *core.
 		}
 
 		if metricIndex >= 0 {
-			if columnValue, ok := values[metricIndex].(string); ok == true {
+			if columnValue, ok := values[metricIndex].(string); ok {
 				metric = columnValue
 			} else {
 				return fmt.Errorf("Column metric must be of type CHAR, VARCHAR, NCHAR or NVARCHAR. metric column name: %s type: %s but datatype is %T", columnNames[metricIndex], columnTypes[metricIndex].DatabaseTypeName(), values[metricIndex])
@@ -271,7 +271,7 @@ func (e MssqlQueryEndpoint) transformToTimeSeries(query *tsdb.Query, rows *core.
 			}
 
 			series, exist := pointsBySeries[metric]
-			if exist == false {
+			if !exist {
 				series = &tsdb.TimeSeries{Name: metric}
 				pointsBySeries[metric] = series
 				seriesByQueryOrder.PushBack(metric)
@@ -279,7 +279,7 @@ func (e MssqlQueryEndpoint) transformToTimeSeries(query *tsdb.Query, rows *core.
 
 			if fillMissing {
 				var intervalStart float64
-				if exist == false {
+				if !exist {
 					intervalStart = float64(tsdbQuery.TimeRange.MustGetFrom().UnixNano() / 1e6)
 				} else {
 					intervalStart = series.Points[len(series.Points)-1][1].Float64 + fillInterval

pkg/tsdb/mysql/mysql.go

@@ -218,7 +218,7 @@ func (e MysqlQueryEndpoint) transformToTimeSeries(query *tsdb.Query, rows *core.
 	fillValue := null.Float{}
 	if fillMissing {
 		fillInterval = query.Model.Get("fillInterval").MustFloat64() * 1000
-		if query.Model.Get("fillNull").MustBool(false) == false {
+		if !query.Model.Get("fillNull").MustBool(false) {
 			fillValue.Float64 = query.Model.Get("fillValue").MustFloat64()
 			fillValue.Valid = true
 		}
@@ -253,7 +253,7 @@ func (e MysqlQueryEndpoint) transformToTimeSeries(query *tsdb.Query, rows *core.
 		}
 
 		if metricIndex >= 0 {
-			if columnValue, ok := values[metricIndex].(string); ok == true {
+			if columnValue, ok := values[metricIndex].(string); ok {
 				metric = columnValue
 			} else {
 				return fmt.Errorf("Column metric must be of type char,varchar or text, got: %T %v", values[metricIndex], values[metricIndex])
@@ -280,7 +280,7 @@ func (e MysqlQueryEndpoint) transformToTimeSeries(query *tsdb.Query, rows *core.
 			}
 
 			series, exist := pointsBySeries[metric]
-			if exist == false {
+			if !exist {
 				series = &tsdb.TimeSeries{Name: metric}
 				pointsBySeries[metric] = series
 				seriesByQueryOrder.PushBack(metric)
@@ -288,7 +288,7 @@ func (e MysqlQueryEndpoint) transformToTimeSeries(query *tsdb.Query, rows *core.
 
 			if fillMissing {
 				var intervalStart float64
-				if exist == false {
+				if !exist {
 					intervalStart = float64(tsdbQuery.TimeRange.MustGetFrom().UnixNano() / 1e6)
 				} else {
 					intervalStart = series.Points[len(series.Points)-1][1].Float64 + fillInterval

pkg/tsdb/postgres/postgres.go

@@ -131,7 +131,7 @@ func (e PostgresQueryEndpoint) getTypedRowData(rows *core.Rows) (tsdb.RowValues,
 	// convert types not handled by lib/pq
 	// unhandled types are returned as []byte
 	for i := 0; i < len(types); i++ {
-		if value, ok := values[i].([]byte); ok == true {
+		if value, ok := values[i].([]byte); ok {
 			switch types[i].DatabaseTypeName() {
 			case "NUMERIC":
 				if v, err := strconv.ParseFloat(string(value), 64); err == nil {
@@ -198,7 +198,7 @@ func (e PostgresQueryEndpoint) transformToTimeSeries(query *tsdb.Query, rows *co
 	fillValue := null.Float{}
 	if fillMissing {
 		fillInterval = query.Model.Get("fillInterval").MustFloat64() * 1000
-		if query.Model.Get("fillNull").MustBool(false) == false {
+		if !query.Model.Get("fillNull").MustBool(false) {
 			fillValue.Float64 = query.Model.Get("fillValue").MustFloat64()
 			fillValue.Valid = true
 		}
@@ -233,7 +233,7 @@ func (e PostgresQueryEndpoint) transformToTimeSeries(query *tsdb.Query, rows *co
 		}
 
 		if metricIndex >= 0 {
-			if columnValue, ok := values[metricIndex].(string); ok == true {
+			if columnValue, ok := values[metricIndex].(string); ok {
 				metric = columnValue
 			} else {
 				return fmt.Errorf("Column metric must be of type char,varchar or text, got: %T %v", values[metricIndex], values[metricIndex])
@@ -260,7 +260,7 @@ func (e PostgresQueryEndpoint) transformToTimeSeries(query *tsdb.Query, rows *co
 			}
 
 			series, exist := pointsBySeries[metric]
-			if exist == false {
+			if !exist {
 				series = &tsdb.TimeSeries{Name: metric}
 				pointsBySeries[metric] = series
 				seriesByQueryOrder.PushBack(metric)
@@ -268,7 +268,7 @@ func (e PostgresQueryEndpoint) transformToTimeSeries(query *tsdb.Query, rows *co
 
 			if fillMissing {
 				var intervalStart float64
-				if exist == false {
+				if !exist {
 					intervalStart = float64(tsdbQuery.TimeRange.MustGetFrom().UnixNano() / 1e6)
 				} else {
 					intervalStart = series.Points[len(series.Points)-1][1].Float64 + fillInterval