[#54] Fix linter warnings

Signed-off-by: Alex Vanin <a.vanin@yadro.com>

app.go

@@ -494,41 +494,41 @@ func (a *app) configureRouter(uploadRoutes *uploader.Uploader, downloadRoutes *d
 	a.webServer.Handler = r.Handler
 }
 
-func (a *app) logger(req fasthttp.RequestHandler) fasthttp.RequestHandler {
-	return func(ctx *fasthttp.RequestCtx) {
-		a.log.Info("request", zap.String("remote", ctx.RemoteAddr().String()),
-			zap.ByteString("method", ctx.Method()),
-			zap.ByteString("path", ctx.Path()),
-			zap.ByteString("query", ctx.QueryArgs().QueryString()),
-			zap.Uint64("id", ctx.ID()))
-		req(ctx)
+func (a *app) logger(h fasthttp.RequestHandler) fasthttp.RequestHandler {
+	return func(req *fasthttp.RequestCtx) {
+		a.log.Info("request", zap.String("remote", req.RemoteAddr().String()),
+			zap.ByteString("method", req.Method()),
+			zap.ByteString("path", req.Path()),
+			zap.ByteString("query", req.QueryArgs().QueryString()),
+			zap.Uint64("id", req.ID()))
+		h(req)
 	}
 }
 
-func (a *app) tokenizer(req fasthttp.RequestHandler) fasthttp.RequestHandler {
-	return func(ctx *fasthttp.RequestCtx) {
-		appCtx, err := tokens.StoreBearerTokenAppCtx(ctx, a.ctx)
+func (a *app) tokenizer(h fasthttp.RequestHandler) fasthttp.RequestHandler {
+	return func(req *fasthttp.RequestCtx) {
+		appCtx, err := tokens.StoreBearerTokenAppCtx(a.ctx, req)
 		if err != nil {
 			a.log.Error("could not fetch and store bearer token", zap.Error(err))
-			response.Error(ctx, "could not fetch and store bearer token: "+err.Error(), fasthttp.StatusBadRequest)
+			response.Error(req, "could not fetch and store bearer token: "+err.Error(), fasthttp.StatusBadRequest)
 		}
-		utils.SetContextToRequest(appCtx, ctx)
-		req(ctx)
+		utils.SetContextToRequest(appCtx, req)
+		h(req)
 	}
 }
 
-func (a *app) tracer(req fasthttp.RequestHandler) fasthttp.RequestHandler {
-	return func(ctx *fasthttp.RequestCtx) {
-		appCtx := utils.GetContextFromRequest(ctx)
+func (a *app) tracer(h fasthttp.RequestHandler) fasthttp.RequestHandler {
+	return func(req *fasthttp.RequestCtx) {
+		appCtx := utils.GetContextFromRequest(req)
 
-		appCtx, span := utils.StartHTTPServerSpan(appCtx, ctx, "REQUEST")
+		appCtx, span := utils.StartHTTPServerSpan(appCtx, req, "REQUEST")
 		defer func() {
-			utils.SetHTTPTraceInfo(appCtx, span, ctx)
+			utils.SetHTTPTraceInfo(appCtx, span, req)
 			span.End()
 		}()
 
-		utils.SetContextToRequest(appCtx, ctx)
-		req(ctx)
+		utils.SetContextToRequest(appCtx, req)
+		h(req)
 	}
 }
 

settings.go

@@ -320,11 +320,7 @@ func mergeConfig(v *viper.Viper, fileName string) error {
 		}
 	}()
 
-	if err = v.MergeConfig(cfgFile); err != nil {
-		return err
-	}
-
-	return nil
+	return v.MergeConfig(cfgFile)
 }
 
 // newLogger constructs a zap.Logger instance for current application.

tokens/bearer-token.go

@@ -13,9 +13,11 @@ import (
 
 type fromHandler = func(h *fasthttp.RequestHeader) []byte
 
+type ctxKey string
+
 const (
-	bearerTokenHdr = "Bearer"
-	bearerTokenKey = "__context_bearer_token_key"
+	bearerTokenHdr        = "Bearer"
+	bearerTokenKey ctxKey = "__context_bearer_token_key"
 )
 
 // BearerToken usage:
@@ -50,12 +52,12 @@ func BearerTokenFromCookie(h *fasthttp.RequestHeader) []byte {
 
 // StoreBearerTokenAppCtx extracts a bearer token from the header or cookie and stores
 // it in the application context.
-func StoreBearerTokenAppCtx(ctx *fasthttp.RequestCtx, appCtx context.Context) (context.Context, error) {
-	tkn, err := fetchBearerToken(ctx)
+func StoreBearerTokenAppCtx(ctx context.Context, req *fasthttp.RequestCtx) (context.Context, error) {
+	tkn, err := fetchBearerToken(req)
 	if err != nil {
 		return nil, err
 	}
-	newCtx := context.WithValue(appCtx, bearerTokenKey, tkn)
+	newCtx := context.WithValue(ctx, bearerTokenKey, tkn)
 	return newCtx, nil
 }
 

tokens/bearer-token_test.go

@@ -151,10 +151,10 @@ func Test_checkAndPropagateBearerToken(t *testing.T) {
 	t64 := base64.StdEncoding.EncodeToString(tkn.Marshal())
 	require.NotEmpty(t, t64)
 
-	ctx := makeTestRequest(t64, "")
+	req := makeTestRequest(t64, "")
 
 	// Expect to see the token within the context.
-	appCtx, err := StoreBearerTokenAppCtx(ctx, context.Background())
+	appCtx, err := StoreBearerTokenAppCtx(context.Background(), req)
 	require.NoError(t, err)
 
 	// Expect to see the same token without errors.