Fix issues reported by DeepSource (#3349)

cmd/goa/gen.go

@@ -263,7 +263,12 @@ func cleanupDirs(cmd, output string) []string {
 		if err != nil {
 			return nil
 		}
-		defer gendir.Close()
+		defer func() {
+			err := gendir.Close()
+			if err != nil {
+				fmt.Fprintf(os.Stderr, "failed to close gendir: %s", err)
+			}
+		}()
 		finfos, err := gendir.Readdir(-1)
 		if err != nil {
 			return []string{gendirPath}

cmd/goa/main.go

@@ -62,7 +62,10 @@ func main() {
 		}
 	}
 
-	gen(cmd, path, output, debug)
+	if err := gen(cmd, path, output, debug); err != nil {
+		fmt.Fprintln(os.Stderr, err.Error())
+		os.Exit(1)
+	}
 }
 
 // help with tests
@@ -71,7 +74,7 @@ var (
 	gen   = generate
 )
 
-func generate(cmd, path, output string, debug bool) {
+func generate(cmd, path, output string, debug bool) error {
 	var (
 		files []string
 		err   error
@@ -83,9 +86,6 @@ func generate(cmd, path, output string, debug bool) {
 	}
 
 	tmp = NewGenerator(cmd, path, output)
-	if !debug {
-		defer tmp.Remove()
-	}
 
 	if err = tmp.Write(debug); err != nil {
 		goto fail
@@ -100,13 +100,15 @@ func generate(cmd, path, output string, debug bool) {
 	}
 
 	fmt.Println(strings.Join(files, "\n"))
-	return
+	if !debug {
+		tmp.Remove()
+	}
+	return nil
 fail:
-	fmt.Fprintln(os.Stderr, err.Error())
 	if !debug && tmp != nil {
 		tmp.Remove()
 	}
-	os.Exit(1)
+	return err
 }
 
 func help() {
@@ -142,5 +144,4 @@ Example:
   goa gen goa.design/examples/cellar/design -o gendir
 
 `)
-	os.Exit(1)
 }

cmd/goa/main_test.go

@@ -19,7 +19,7 @@ func TestCmdLine(t *testing.T) {
 	)
 
 	usage = func() { usageCalled = true }
-	gen = func(c string, p, o string, d bool) { cmd, path, output, debug = c, p, o, d }
+	gen = func(c string, p, o string, d bool) error { cmd, path, output, debug = c, p, o, d; return nil }
 	defer func() {
 		usage = help
 		gen = generate

codegen/file.go

@@ -82,14 +82,14 @@ func (f *File) Render(dir string) (string, error) {
 		}
 	}
 
-	if err := os.MkdirAll(filepath.Dir(path), 0755); err != nil {
+	if err := os.MkdirAll(filepath.Dir(path), 0750); err != nil {
 		return "", err
 	}
 
 	file, err := os.OpenFile(
 		path,
 		os.O_CREATE|os.O_APPEND|os.O_WRONLY,
-		0644,
+		0600,
 	)
 	if err != nil {
 		return "", err

codegen/generator/generate.go

@@ -30,7 +30,7 @@ func Generate(dir, cmd string) (outputs []string, err1 error) {
 			return nil, err
 		}
 		path := filepath.Join(base, codegen.Gendir)
-		if err := os.MkdirAll(path, 0777); err != nil {
+		if err := os.MkdirAll(path, 0750); err != nil {
 			return nil, err
 		}
 

codegen/generator/service.go

@@ -14,30 +14,31 @@ func Service(genpkg string, roots []eval.Root) ([]*codegen.File, error) {
 	var files []*codegen.File
 	var userTypePkgs = make(map[string][]string)
 	for _, root := range roots {
-		switch r := root.(type) {
-		case *expr.RootExpr:
-			for _, s := range r.Services {
-				// Make sure service is first so name scope is
-				// properly initialized.
-				files = append(files, service.Files(genpkg, s, userTypePkgs)...)
-				files = append(files, service.EndpointFile(genpkg, s))
-				files = append(files, service.ClientFile(genpkg, s))
-				if f := service.ViewsFile(genpkg, s); f != nil {
-					files = append(files, f)
-				}
-				for _, f := range files {
-					if len(f.SectionTemplates) > 0 {
-						service.AddServiceDataMetaTypeImports(f.SectionTemplates[0], s)
-					}
-				}
-				f, err := service.ConvertFile(r, s)
-				if err != nil {
-					return nil, err
-				}
-				if f != nil {
-					files = append(files, f)
+		r, ok := root.(*expr.RootExpr)
+		if !ok {
+			continue
+		}
+		for _, s := range r.Services {
+			// Make sure service is first so name scope is
+			// properly initialized.
+			files = append(files, service.Files(genpkg, s, userTypePkgs)...)
+			files = append(files, service.EndpointFile(genpkg, s))
+			files = append(files, service.ClientFile(genpkg, s))
+			if f := service.ViewsFile(genpkg, s); f != nil {
+				files = append(files, f)
+			}
+			for _, f := range files {
+				if len(f.SectionTemplates) > 0 {
+					service.AddServiceDataMetaTypeImports(f.SectionTemplates[0], s)
 				}
 			}
+			f, err := service.ConvertFile(r, s)
+			if err != nil {
+				return nil, err
+			}
+			if f != nil {
+				files = append(files, f)
+			}
 		}
 	}
 	return files, nil

codegen/import.go

@@ -178,8 +178,8 @@ func safelyGetMetaTypeImports(att *expr.AttributeExpr, seen map[string]struct{})
 	}
 	for imp := range uniqueImports {
 		// Copy loop variable into body so next iteration doesn't overwrite its address https://stackoverflow.com/questions/27610039/golang-appending-leaves-only-last-element
-		copy := imp
-		imports = append(imports, &copy)
+		cp := imp
+		imports = append(imports, &cp)
 	}
 	return imports
 }

codegen/service/convert.go

@@ -342,7 +342,7 @@ type dtRec struct {
 	seen map[string]expr.DataType
 }
 
-func (r dtRec) append(p string) dtRec {
+func appendPath(r dtRec, p string) dtRec {
 	r.path += p
 	return r
 }
@@ -414,7 +414,7 @@ func buildDesignType(dt *expr.DataType, t reflect.Type, ref expr.DataType, recs
 			eref = expr.AsArray(ref).ElemType.Type
 		}
 		var elem expr.DataType
-		if err := buildDesignType(&elem, e, eref, rec.append("[0]")); err != nil {
+		if err := buildDesignType(&elem, e, eref, appendPath(rec, "[0]")); err != nil {
 			return fmt.Errorf("%s", err)
 		}
 		*dt = &expr.Array{ElemType: &expr.AttributeExpr{Type: elem}}
@@ -427,11 +427,11 @@ func buildDesignType(dt *expr.DataType, t reflect.Type, ref expr.DataType, recs
 			vref = m.ElemType.Type
 		}
 		var kt expr.DataType
-		if err := buildDesignType(&kt, t.Key(), kref, rec.append(".key")); err != nil {
+		if err := buildDesignType(&kt, t.Key(), kref, appendPath(rec, ".key")); err != nil {
 			return fmt.Errorf("%s", err)
 		}
 		var vt expr.DataType
-		if err := buildDesignType(&vt, t.Elem(), vref, rec.append(".value")); err != nil {
+		if err := buildDesignType(&vt, t.Elem(), vref, appendPath(rec, ".value")); err != nil {
 			return fmt.Errorf("%s", err)
 		}
 		*dt = &expr.Map{KeyType: &expr.AttributeExpr{Type: kt}, ElemType: &expr.AttributeExpr{Type: vt}}
@@ -475,7 +475,7 @@ func buildDesignType(dt *expr.DataType, t reflect.Type, ref expr.DataType, recs
 		rec.seen[t.Name()] = ut
 		var required []string
 		for i, f := range fields {
-			recf := rec.append("." + f.Name)
+			recf := appendPath(rec, "."+f.Name)
 			atn, fn := attributeName(oref, f.Name)
 			var aref expr.DataType
 			if oref != nil {
@@ -500,7 +500,7 @@ func buildDesignType(dt *expr.DataType, t reflect.Type, ref expr.DataType, recs
 				if isPrimitive(f.Type) {
 					required = append(required, atn)
 				}
-				if err := buildDesignType(&fdt, f.Type, aref, rec.append("."+f.Name)); err != nil {
+				if err := buildDesignType(&fdt, f.Type, aref, appendPath(rec, "."+f.Name)); err != nil {
 					return fmt.Errorf("%q.%s: %s", t.Name(), f.Name, err)
 				}
 			}
@@ -625,7 +625,7 @@ type compRec struct {
 	seen map[string]struct{}
 }
 
-func (r compRec) append(p string) compRec {
+func appendCompPath(r compRec, p string) compRec {
 	r.path += p
 	return r
 }
@@ -662,7 +662,7 @@ func compatible(from expr.DataType, to reflect.Type, recs ...compRec) error {
 		return compatible(
 			expr.AsArray(from).ElemType.Type,
 			to.Elem(),
-			rec.append("[0]"),
+			appendCompPath(rec, "[0]"),
 		)
 	}
 
@@ -673,14 +673,14 @@ func compatible(from expr.DataType, to reflect.Type, recs ...compRec) error {
 		if err := compatible(
 			expr.AsMap(from).ElemType.Type,
 			to.Elem(),
-			rec.append(".value"),
+			appendCompPath(rec, ".value"),
 		); err != nil {
 			return err
 		}
 		return compatible(
 			expr.AsMap(from).KeyType.Type,
 			to.Key(),
-			rec.append(".key"),
+			appendCompPath(rec, ".key"),
 		)
 	}
 
@@ -722,7 +722,7 @@ func compatible(from expr.DataType, to reflect.Type, recs ...compRec) error {
 			err := compatible(
 				nat.Attribute.Type,
 				field.Type,
-				rec.append("."+fname),
+				appendCompPath(rec, "."+fname),
 			)
 			if err != nil {
 				return err

http/client.go

@@ -148,7 +148,7 @@ func (dd *debugDoer) Fprint(w io.Writer) {
 }
 
 // Error builds an error message.
-func (c *ClientError) Error() string {
+func (c ClientError) Error() string {
 	return fmt.Sprintf("[%s %s]: %s", c.Service, c.Method, c.Message)
 }
 

http/codegen/client_encode_test.go

@@ -175,7 +175,12 @@ func TestClientEncode(t *testing.T) {
 		if _, err := golden.WriteString("package testdata\n"); err != nil {
 			t.Fatal(err)
 		}
-		defer golden.Close()
+		defer func() {
+			err := golden.Close()
+			if err != nil {
+				t.Fatal(err)
+			}
+		}()
 	}
 	for _, c := range cases {
 		t.Run(c.Name, func(t *testing.T) {

http/codegen/openapi/v2/builder.go

@@ -374,9 +374,9 @@ func paramFor(at *expr.AttributeExpr, name, in string, required bool) *Parameter
 
 func itemsFromExpr(at *expr.AttributeExpr) *Items {
 	items := &Items{Type: at.Type.Name()}
-	switch actual := at.Type.(type) {
-	case expr.Primitive:
-		switch actual.Kind() {
+	p, ok := at.Type.(expr.Primitive)
+	if ok {
+		switch p.Kind() {
 		case expr.IntKind, expr.Int64Kind, expr.UIntKind, expr.UInt64Kind, expr.Int32Kind, expr.UInt32Kind:
 			items.Type = "integer"
 		case expr.Float32Kind, expr.Float64Kind:

http/codegen/openapi/v3/openapi.go

@@ -284,8 +284,8 @@ func (o Operation) MarshalJSON() ([]byte, error) {
 }
 
 // MarshalJSON returns the JSON encoding of p.
-func (p Parameter) MarshalJSON() ([]byte, error) {
-	return openapi.MarshalJSON(_Parameter(p), p.Extensions)
+func (p *Parameter) MarshalJSON() ([]byte, error) {
+	return openapi.MarshalJSON((*_Parameter)(p), p.Extensions)
 }
 
 // MarshalJSON returns the JSON encoding of r.
@@ -314,8 +314,8 @@ func (o Operation) MarshalYAML() (any, error) {
 }
 
 // MarshalYAML returns value which marshaled in place of the original value
-func (p Parameter) MarshalYAML() (any, error) {
-	return openapi.MarshalYAML(_Parameter(p), p.Extensions)
+func (p *Parameter) MarshalYAML() (any, error) {
+	return openapi.MarshalYAML((*_Parameter)(p), p.Extensions)
 }
 
 // MarshalYAML returns value which marshaled in place of the original value

http/codegen/server_decode_test.go

@@ -197,7 +197,6 @@ func TestDecode(t *testing.T) {
 		{"decode-multipart-body-map-type", testdata.PayloadMultipartMapTypeDSL, testdata.PayloadMultipartMapTypeDecodeCode},
 		{"decode-with-params-and-headers-dsl", testdata.WithParamsAndHeadersBlockDSL, testdata.WithParamsAndHeadersBlockDecodeCode},
 
-		//decode- aliases
 		{"decode-query-int-alias", testdata.QueryIntAliasDSL, testdata.QueryIntAliasDecodeCode},
 		{"decode-query-int-alias-validate", testdata.QueryIntAliasValidateDSL, testdata.QueryIntAliasValidateDecodeCode},
 		{"decode-query-array-alias", testdata.QueryArrayAliasDSL, testdata.QueryArrayAliasDecodeCode},

http/codegen/service_data.go

@@ -2390,7 +2390,8 @@ func extractQueryParams(a *expr.MappedAttributeExpr, service *expr.AttributeExpr
 			pointer bool
 			fptr    bool
 		)
-		if pointer = a.IsPrimitivePointer(name, true); pointer {
+		pointer = a.IsPrimitivePointer(name, true)
+		if pointer {
 			typeRef = "*" + typeRef
 		}
 		fieldName := codegen.Goify(name, true)