linting

api/fx/ingestor/internal/app/app.go

@@ -39,6 +39,7 @@ func New(logger mlogger.Logger, cfgPath string) (*App, error) {
 	if err != nil {
 		return nil, err
 	}
+
 	return &App{
 		logger: logger,
 		cfg:    cfg,
@@ -50,7 +51,9 @@ func (a *App) Run(ctx context.Context) error {
 	if err != nil {
 		return err
 	}
+
 	a.logger.Debug("Metrics server initialised")
+
 	defer metricsSrv.Close(context.Background()) //nolint:contextcheck
 
 	conn, err := db.ConnectMongo(a.logger, a.cfg.Database) //nolint:contextcheck
@@ -65,6 +68,7 @@ func (a *App) Run(ctx context.Context) error {
 	if err != nil {
 		return err
 	}
+
 	a.logger.Debug("Storage repository initialised")
 
 	service, err := ingestor.New(a.logger, a.cfg, repo)
@@ -95,7 +99,8 @@ func (a *App) Run(ctx context.Context) error {
 	a.logger.Info("Starting FX ingestor service", zap.String("version", appversion.Create().Info()))
 	metricsSrv.SetStatus(health.SSRunning)
 
-	if err := service.Run(ctx); err != nil {
+	err = service.Run(ctx)
+	if err != nil {
 		if !errors.Is(err, context.Canceled) { // ignore termination reques error
 			a.logger.Error("Ingestor service exited with error", zap.Error(err))
 		}

api/fx/ingestor/internal/config/config.go

@@ -15,7 +15,7 @@ import (
 const defaultPollInterval = 30 * time.Second
 
 type Config struct {
-	PollIntervalSeconds int               `yaml:"poll_interval_seconds"`
+	PollIntervalSeconds int               `yaml:"poll_interval_seconds"` //nolint:tagliatelle // matches config file format
 	Market              MarketConfig      `yaml:"market"`
 	Database            *db.Config        `yaml:"database"`
 	Metrics             *MetricsConfig    `yaml:"metrics"`
@@ -25,7 +25,7 @@ type Config struct {
 	pairsBySource map[mmodel.Driver][]PairConfig
 }
 
-//nolint:cyclop
+//nolint:cyclop,funlen
 func Load(path string) (*Config, error) {
 	if path == "" {
 		return nil, merrors.InvalidArgument("config: path is empty")
@@ -63,6 +63,7 @@ func Load(path string) (*Config, error) {
 
 	normalizedPairs := make(map[string][]PairConfig, len(cfg.Market.Pairs))
 	pairsBySource := make(map[mmodel.Driver][]PairConfig, len(cfg.Market.Pairs))
+
 	var flattened []Pair
 
 	for rawSource, pairList := range cfg.Market.Pairs {
@@ -72,7 +73,8 @@ func Load(path string) (*Config, error) {
 		}
 
 		if _, ok := sourceSet[driver]; !ok {
-			return nil, merrors.InvalidArgument("config: pair references unknown source: "+driver.String(), "pairs."+driver.String())
+			return nil, merrors.InvalidArgument( //nolint:lll
+			"config: pair references unknown source: "+driver.String(), "pairs."+driver.String())
 		}
 
 		processed := make([]PairConfig, len(pairList))
@@ -82,13 +84,16 @@ func Load(path string) (*Config, error) {
 			pair.Quote = strings.ToUpper(strings.TrimSpace(pair.Quote))
 
 			pair.Symbol = strings.TrimSpace(pair.Symbol)
+
 			if pair.Base == "" || pair.Quote == "" || pair.Symbol == "" {
-				return nil, merrors.InvalidArgument("config: pair entries must define base, quote, and symbol", "pairs."+driver.String())
+				return nil, merrors.InvalidArgument( //nolint:lll
+					"config: pair entries must define base, quote, and symbol", "pairs."+driver.String())
 			}
 
 			if strings.TrimSpace(pair.Provider) == "" {
 				pair.Provider = strings.ToLower(driver.String())
 			}
+	
 			processed[idx] = pair
 			flattened = append(flattened, Pair{
 				PairConfig: pair,
@@ -111,7 +116,7 @@ func Load(path string) (*Config, error) {
 	if cfg.Metrics != nil && cfg.Metrics.Enabled {
 		cfg.Metrics.Address = strings.TrimSpace(cfg.Metrics.Address)
 		if cfg.Metrics.Address == "" {
-			cfg.Metrics.Address = ":9102" //nolint:mnd
+			cfg.Metrics.Address = ":9102"
 		}
 	}
 

api/fx/ingestor/internal/market/cbr/connector.go

@@ -42,21 +42,26 @@ const (
 )
 
 const (
-	defaultDialTimeoutSeconds           = 5 * time.Second
+	defaultDialTimeout           = 5 * time.Second
-	defaultDialKeepAliveSeconds         = 30 * time.Second
+	defaultDialKeepAlive         = 30 * time.Second
-	defaultTLSHandshakeTimeoutSeconds   = 5 * time.Second
+	defaultTLSHandshakeTimeout   = 5 * time.Second
-	defaultResponseHeaderTimeoutSeconds = 10 * time.Second
+	defaultResponseHeaderTimeout = 10 * time.Second
-	defaultRequestTimeoutSeconds        = 10 * time.Second
+	defaultRequestTimeout        = 10 * time.Second
 )
 
-func NewConnector(logger mlogger.Logger, settings model.SettingsT) (mmodel.Connector, error) { //nolint:cyclop,ireturn
+const (
+	maxSymbolParts = 2
+	isoCodeLen     = 3
+)
+
+func NewConnector(logger mlogger.Logger, settings model.SettingsT) (mmodel.Connector, error) { //nolint:cyclop,funlen,nestif,ireturn
 	baseURL := defaultCBRBaseURL
 	provider := strings.ToLower(mmodel.DriverCBR.String())
-	dialTimeout := defaultDialTimeoutSeconds
+	dialTimeout := defaultDialTimeout
-	dialKeepAlive := defaultDialKeepAliveSeconds
+	dialKeepAlive := defaultDialKeepAlive
-	tlsHandshakeTimeout := defaultTLSHandshakeTimeoutSeconds
+	tlsHandshakeTimeout := defaultTLSHandshakeTimeout
-	responseHeaderTimeout := defaultResponseHeaderTimeoutSeconds
+	responseHeaderTimeout := defaultResponseHeaderTimeout
-	requestTimeout := defaultRequestTimeoutSeconds
+	requestTimeout := defaultRequestTimeout
 	directoryPath := defaultDirectoryPath
 	dailyPath := defaultDailyPath
 	dynamicPath := defaultDynamicPath
@@ -79,9 +84,11 @@ func NewConnector(logger mlogger.Logger, settings model.SettingsT) (mmodel.Conne
 		if value, ok := settings["dynamic_path"].(string); ok && strings.TrimSpace(value) != "" {
 			dynamicPath = strings.TrimSpace(value)
 		}
+
 		if value, ok := settings["user_agent"].(string); ok && strings.TrimSpace(value) != "" {
 			userAgent = strings.TrimSpace(value)
 		}
+
 		if value, ok := settings["accept_header"].(string); ok && strings.TrimSpace(value) != "" {
 			acceptHeader = strings.TrimSpace(value)
 		}
@@ -132,7 +139,8 @@ func NewConnector(logger mlogger.Logger, settings model.SettingsT) (mmodel.Conne
 		logger:        logger.Named("cbr"),
 	}
 
-	if err := connector.refreshDirectory(); err != nil {
+	err = connector.refreshDirectory()
+	if err != nil {
 		return nil, err
 	}
 
@@ -165,6 +173,7 @@ func (c *cbrConnector) FetchTicker(ctx context.Context, symbol string) (*mmodel.
 	}
 
 	now := time.Now().UnixMilli()
+
 	return &mmodel.Ticker{
 		Symbol:    formatSymbol(isoCode, asOfDate),
 		BidPrice:  price,
@@ -213,7 +222,9 @@ func (c *cbrConnector) refreshDirectory() error {
 	decoder.CharsetReader = charset.NewReaderLabel
 
 	var directory valuteDirectory
-	if err := decoder.Decode(&directory); err != nil {
+
+	err = decoder.Decode(&directory)
+	if err != nil {
 		c.logger.Warn("CBR directory decode failed", zap.Error(err), zap.String("endpoint", endpoint))
 		return merrors.InternalWrap(err, "cbr: decode directory")
 	}
@@ -226,6 +237,7 @@ func (c *cbrConnector) refreshDirectory() error {
 
 	c.byISO = mapping.byISO
 	c.byID = mapping.byID
+
 	return nil
 }
 
@@ -265,7 +277,9 @@ func (c *cbrConnector) fetchDailyRate(ctx context.Context, valute valuteInfo) (s
 	decoder.CharsetReader = charset.NewReaderLabel
 
 	var payload dailyRates
-	if err := decoder.Decode(&payload); err != nil {
+
+	err = decoder.Decode(&payload)
+	if err != nil {
 		c.logger.Warn("CBR daily decode failed", zap.Error(err),
 			zap.String("currency", valute.ISOCharCode), zap.String("endpoint", endpoint),
 		)
@@ -284,13 +298,16 @@ func (c *cbrConnector) fetchDailyRate(ctx context.Context, valute valuteInfo) (s
 	return computePrice(entry.Value, entry.Nominal)
 }
 
-func (c *cbrConnector) fetchHistoricalRate(ctx context.Context, valute valuteInfo, date time.Time) (string, error) { //nolint:funlen
+func (c *cbrConnector) fetchHistoricalRate( //nolint:funlen
+	ctx context.Context, valute valuteInfo, date time.Time,
+) (string, error) {
 	query := map[string]string{
 		"date_req1": date.Format("02/01/2006"),
 		"date_req2": date.Format("02/01/2006"),
 		"VAL_NM_RQ": valute.ID,
 	}
 	dateStr := date.Format("2006-01-02")
+
 	endpoint, err := c.buildURL(c.dynamicPath, query)
 	if err != nil {
 		return "", err
@@ -365,6 +382,7 @@ func (c *cbrConnector) buildURL(path string, query map[string]string) (string, e
 	if err != nil {
 		return "", merrors.InternalWrap(err, "cbr: parse base url")
 	}
+
 	base.Path = strings.TrimRight(base.Path, "/") + path
 
 	q := base.Query()
@@ -402,13 +420,13 @@ type valuteMapping struct {
 	byID  map[string]valuteInfo
 }
 
-func buildValuteMapping(logger *zap.Logger, items []valuteItem) (*valuteMapping, error) { //nolint:gocognit,nestif
+func buildValuteMapping(logger *zap.Logger, items []valuteItem) (*valuteMapping, error) { //nolint:cyclop,gocognit,nestif
 	byISO := make(map[string]valuteInfo, len(items))
 	byID := make(map[string]valuteInfo, len(items))
 	byNum := make(map[string]string, len(items))
 
 	for _, item := range items {
-		id := strings.TrimSpace(item.ID)
+		valuteID := strings.TrimSpace(item.ID)
 		isoChar := strings.ToUpper(strings.TrimSpace(item.ISOChar))
 		isoNum := strings.TrimSpace(item.ISONum)
 		name := strings.TrimSpace(item.Name)
@@ -419,17 +437,18 @@ func buildValuteMapping(logger *zap.Logger, items []valuteItem) (*valuteMapping,
 			return nil, merrors.InvalidDataType("cbr: parse directory nominal: " + err.Error())
 		}
 
-		if id == "" || isoChar == "" {
+		if valuteID == "" || isoChar == "" {
 			logger.Info("Skipping invalid currency entry",
-				zap.String("id", id),
+				zap.String("id", valuteID),
 				zap.String("iso_char", isoChar),
 				zap.String("name", name),
 			)
+
 			continue
 		}
 
 		info := valuteInfo{
-			ID:          id,
+			ID:          valuteID,
 			ISOCharCode: isoChar,
 			ISONumCode:  isoNum,
 			Name:        name,
@@ -440,11 +459,12 @@ func buildValuteMapping(logger *zap.Logger, items []valuteItem) (*valuteMapping,
 		// Handle duplicate ISO char codes (e.g. DEM with different IDs / nominals).
 		if existing, ok := byISO[isoChar]; ok {
 			// Same ISO + same ID: duplicate entry, just ignore.
-			if existing.ID == id {
+			if existing.ID == valuteID {
 				logger.Debug("Duplicate directory entry for same ISO and ID, ignoring",
 					zap.String("iso_code", isoChar),
-					zap.String("id", id),
+					zap.String("id", valuteID),
 				)
+
 				continue
 			}
 
@@ -486,17 +506,18 @@ func buildValuteMapping(logger *zap.Logger, items []valuteItem) (*valuteMapping,
 
 			// Update byID: drop old ID, add new one
 			delete(byID, existing.ID)
-			byID[id] = info
+			byID[valuteID] = info
 
 			// Update ISO mapping
 			byISO[isoChar] = info
 
 			// Update numeric-code index if present
 			if isoNum != "" {
-				if existingID, ok := byNum[isoNum]; ok && existingID != id {
+				if existingID, ok := byNum[isoNum]; ok && existingID != valuteID {
 					return nil, merrors.InvalidDataType("cbr: duplicate ISO numeric code " + isoNum)
 				}
-				byNum[isoNum] = id
+
+				byNum[isoNum] = valuteID
 			}
 
 			continue
@@ -504,23 +525,24 @@ func buildValuteMapping(logger *zap.Logger, items []valuteItem) (*valuteMapping,
 
 		// No existing ISO entry, do normal uniqueness checks.
 
-		if existing, ok := byID[id]; ok && existing.ISOCharCode != isoChar {
+		if existing, ok := byID[valuteID]; ok && existing.ISOCharCode != isoChar {
-			return nil, merrors.InvalidDataType("cbr: duplicate valute id " + id)
+			return nil, merrors.InvalidDataType("cbr: duplicate valute id " + valuteID)
 		}
 
 		if isoNum != "" {
-			if existingID, ok := byNum[isoNum]; ok && existingID != id {
+			if existingID, ok := byNum[isoNum]; ok && existingID != valuteID {
 				return nil, merrors.InvalidDataType("cbr: duplicate ISO numeric code " + isoNum)
 			}
-			byNum[isoNum] = id
+
+			byNum[isoNum] = valuteID
 		}
 
 		logger.Info("Installing currency code",
-			zap.String("iso_code", isoChar), zap.String("id", id), zap.Int64("nominal", nominal),
+			zap.String("iso_code", isoChar), zap.String("id", valuteID), zap.Int64("nominal", nominal),
 		)
 
 		byISO[isoChar] = info
-		byID[id] = info
+		byID[valuteID] = info
 	}
 
 	if len(byISO) == 0 {

api/fx/ingestor/internal/market/cbr/connector_test.go

@@ -1,4 +1,4 @@
-package cbr
+package cbr //nolint:testpackage
 
 import (
 	"context"
@@ -14,6 +14,8 @@ import (
 )
 
 func TestFetchTickerDaily(t *testing.T) {
+	t.Parallel()
+
 	transport := &stubRoundTripper{
 		responses: map[string]stubResponse{
 			"/scripts/XML_valFull.asp": {body: valuteDirectoryXML},
@@ -47,10 +49,16 @@ func TestFetchTickerDaily(t *testing.T) {
 }
 
 func TestFetchTickerValidatesDailyEntry(t *testing.T) {
+	t.Parallel()
+
 	transport := &stubRoundTripper{
 		responses: map[string]stubResponse{
 			"/scripts/XML_valFull.asp": {body: valuteDirectoryXML},
-			"/scripts/XML_daily.asp":   {body: strings.ReplaceAll(dailyRatesXML, "<CharCode>USD</CharCode>", "<CharCode>XXX</CharCode>")},
+			"/scripts/XML_daily.asp": {
+				body: strings.ReplaceAll(
+					dailyRatesXML, "<CharCode>USD</CharCode>", "<CharCode>XXX</CharCode>",
+				),
+			},
 		},
 	}
 
@@ -68,6 +76,8 @@ func TestFetchTickerValidatesDailyEntry(t *testing.T) {
 }
 
 func TestFetchTickerHistorical(t *testing.T) {
+	t.Parallel()
+
 	transport := &stubRoundTripper{
 		responses: map[string]stubResponse{
 			"/scripts/XML_valFull.asp": {body: valuteDirectoryXML},
@@ -75,13 +85,13 @@ func TestFetchTickerHistorical(t *testing.T) {
 				body: dynamicRatesXML,
 				check: func(r *http.Request) error {
 					if got := r.URL.Query().Get("VAL_NM_RQ"); got != "R01235" {
-						return fmt.Errorf("unexpected valute id: %s", got)
+						return fmt.Errorf("unexpected valute id: %s", got) //nolint:err113
 					}
 					if got := r.URL.Query().Get("date_req1"); got != "05/01/2023" {
-						return fmt.Errorf("unexpected date_req1: %s", got)
+						return fmt.Errorf("unexpected date_req1: %s", got) //nolint:err113
 					}
 					if got := r.URL.Query().Get("date_req2"); got != "05/01/2023" {
-						return fmt.Errorf("unexpected date_req2: %s", got)
+						return fmt.Errorf("unexpected date_req2: %s", got) //nolint:err113
 					}
 					return nil
 				},
@@ -111,6 +121,8 @@ func TestFetchTickerHistorical(t *testing.T) {
 }
 
 func TestFetchTickerUnknownCurrency(t *testing.T) {
+	t.Parallel()
+
 	transport := &stubRoundTripper{
 		responses: map[string]stubResponse{
 			"/scripts/XML_valFull.asp": {body: valuteDirectoryXML},
@@ -136,6 +148,8 @@ func TestFetchTickerUnknownCurrency(t *testing.T) {
 }
 
 func TestFetchTickerRespectsCustomPaths(t *testing.T) {
+	t.Parallel()
+
 	transport := &stubRoundTripper{
 		responses: map[string]stubResponse{
 			"/dir.xml":   {body: valuteDirectoryXML},
@@ -200,11 +214,11 @@ type stubRoundTripper struct {
 
 func (s *stubRoundTripper) RoundTrip(req *http.Request) (*http.Response, error) {
 	if s.responses == nil {
-		return nil, fmt.Errorf("no responses configured")
+		return nil, fmt.Errorf("no responses configured") //nolint:err113
 	}
 	res, ok := s.responses[req.URL.Path]
 	if !ok {
-		return nil, fmt.Errorf("unexpected request path: %s", req.URL.Path)
+		return nil, fmt.Errorf("unexpected request path: %s", req.URL.Path) //nolint:err113
 	}
 	if res.check != nil {
 		if err := res.check(req); err != nil {

api/fx/ingestor/internal/market/cbr/http_client.go

@@ -41,20 +41,20 @@ func newHTTPClient(logger *zap.Logger, client *http.Client, opts httpClientOptio
 	if strings.TrimSpace(referer) == "" {
 		referer = defaultCBRBaseURL
 	}
-	l := logger.Named("http_client")
+	httpLogger := logger.Named("http_client")
 
 	headers := make(http.Header, 3)
 	headers.Set("User-Agent", userAgent)
 	headers.Set("Accept", accept)
 	headers.Set("Referer", referer)
 
-	l.Info("HTTP client initialized", zap.String("user_agent", userAgent),
+	httpLogger.Info("HTTP client initialized", zap.String("user_agent", userAgent),
 		zap.String("accept", accept), zap.String("referrer", referer))
 
 	return &httpClient{
 		client:  client,
 		headers: headers,
-		logger:  l,
+		logger:  httpLogger,
 	}
 }
 
@@ -68,6 +68,7 @@ func (h *httpClient) Do(req *http.Request) (*http.Response, error) {
 		if enriched.Header.Get(key) != "" {
 			continue
 		}
+
 		for _, value := range values {
 			enriched.Header.Add(key, value)
 		}