refactor : Refactor error handling to use dry/usefulerror (#283)

* update the go.sum Signed-off-by: DivyanshuVortex <divyanshuchandra9027@gmail.com> * migrate most of the files to dry errors Signed-off-by: DivyanshuVortex <divyanshuchandra9027@gmail.com> * update the rest of the files Signed-off-by: DivyanshuVortex <divyanshuchandra9027@gmail.com> * fixs the review comments Signed-off-by: DivyanshuVortex <divyanshuchandra9027@gmail.com> * chores Signed-off-by: DivyanshuVortex <divyanshuchandra9027@gmail.com> --------- Signed-off-by: DivyanshuVortex <divyanshuchandra9027@gmail.com> Co-authored-by: Abhisek Datta <abhisek.datta@gmail.com>
2026-08-03 07:24:09 +02:00 · 2026-05-24 12:22:19 +05:30
parent e5fe0df82e
commit 20e01d5cae
33 changed files with 234 additions and 639 deletions
@@ -5,7 +5,7 @@ import (
 	"os"

 	"github.com/safedep/dry/log"
-	"github.com/safedep/pmg/usefulerror"
+	"github.com/safedep/pmg/errcodes"
 )

 // ErrorExit prints a minimal, clean error message and exits with a non-zero status code.
@@ -23,7 +23,7 @@ func ErrorExitWithCode(err error, code int) {

 	// Use help as hint, but for unknown errors show bug report link
 	hint := usefulErr.Help()
-	if usefulErr.Code() == usefulerror.ErrCodeUnknown {
+	if usefulErr.Code() == errcodes.Unknown {
 		hint = "Report this issue: https://github.com/safedep/pmg/issues/new?labels=bug"
 	}

@@ -11,7 +11,8 @@ import (
 	"os/exec"
 	"strings"

-	"github.com/safedep/pmg/usefulerror"
+	"github.com/safedep/dry/usefulerror"
+	"github.com/safedep/pmg/errcodes"
 )

 // errorMatcher defines how to detect and convert a specific error type
@@ -35,8 +36,8 @@ var errorMatchers = []errorMatcher{
 				humanError = fmt.Sprintf("File or directory not found: %s", path)
 			}

-			return usefulerror.Useful().
-				WithCode(usefulerror.ErrCodeNotFound).
+			return usefulerror.NewUsefulError().
+				WithCode(errcodes.NotFound).
 				WithHumanError(humanError).
 				WithHelp("Check if the path exists").
 				WithAdditionalHelp("Use 'ls' to check directory contents").
@@ -54,8 +55,8 @@ var errorMatchers = []errorMatcher{
 			if path != "" {
 				humanError = fmt.Sprintf("Permission denied: %s", path)
 			}
-			return usefulerror.Useful().
-				WithCode(usefulerror.ErrCodePermissionDenied).
+			return usefulerror.NewUsefulError().
+				WithCode(errcodes.PermissionDenied).
 				WithHumanError(humanError).
 				WithHelp("Check permissions or use sudo").
 				WithAdditionalHelp("Use 'ls -la' to check permissions").
@@ -72,8 +73,8 @@ var errorMatchers = []errorMatcher{
 			var exitErr *exec.ExitError
 			errors.As(err, &exitErr)
 			exitCode := exitErr.ExitCode()
-			return usefulerror.Useful().
-				WithCode(usefulerror.ErrCodeLifecycle).
+			return usefulerror.NewUsefulError().
+				WithCode(errcodes.Lifecycle).
 				WithHumanError(fmt.Sprintf("Command failed with exit code %d", exitCode)).
 				WithHelp("Check command output above").
 				Wrap(err)
@@ -85,8 +86,8 @@ var errorMatchers = []errorMatcher{
 			return errors.Is(err, context.DeadlineExceeded)
 		},
 		convert: func(err error) usefulerror.UsefulError {
-			return usefulerror.Useful().
-				WithCode(usefulerror.ErrCodeTimeout).
+			return usefulerror.NewUsefulError().
+				WithCode(errcodes.Timeout).
 				WithHumanError("Operation timed out").
 				WithHelp("Try again or check your network").
 				WithAdditionalHelp("Consider increasing timeout or retry later").
@@ -99,8 +100,8 @@ var errorMatchers = []errorMatcher{
 			return errors.Is(err, context.Canceled)
 		},
 		convert: func(err error) usefulerror.UsefulError {
-			return usefulerror.Useful().
-				WithCode(usefulerror.ErrCodeCanceled).
+			return usefulerror.NewUsefulError().
+				WithCode(errcodes.Canceled).
 				WithHumanError("Operation was canceled").
 				Wrap(err)
 		},
@@ -121,15 +122,15 @@ var errorMatchers = []errorMatcher{
 		convert: func(err error) usefulerror.UsefulError {
 			var netErr net.Error
 			if errors.As(err, &netErr) && netErr.Timeout() {
-				return usefulerror.Useful().
-					WithCode(usefulerror.ErrCodeTimeout).
+				return usefulerror.NewUsefulError().
+					WithCode(errcodes.Timeout).
 					WithHumanError("Network request timed out").
 					WithHelp("Check your internet connection").
 					WithAdditionalHelp("Consider increasing timeout or retry later").
 					Wrap(err)
 			}
-			return usefulerror.Useful().
-				WithCode(usefulerror.ErrCodeNetwork).
+			return usefulerror.NewUsefulError().
+				WithCode(errcodes.Network).
 				WithHumanError("Network error occurred").
 				WithHelp("Check your internet connection").
 				WithAdditionalHelp("The package registry may be temporarily unavailable").
@@ -142,8 +143,8 @@ var errorMatchers = []errorMatcher{
 			return errors.Is(err, io.EOF) || errors.Is(err, io.ErrUnexpectedEOF)
 		},
 		convert: func(err error) usefulerror.UsefulError {
-			return usefulerror.Useful().
-				WithCode(usefulerror.ErrCodeUnexpectedEOF).
+			return usefulerror.NewUsefulError().
+				WithCode(errcodes.UnexpectedEOF).
 				WithHumanError("Unexpected end of data").
 				WithHelp("Retry the download").
 				WithAdditionalHelp("This may indicate network instability").
@@ -152,6 +153,17 @@ var errorMatchers = []errorMatcher{
 	},
 }

+func init() {
+	usefulerror.RegisterErrorConverter("pmg-ui-converter", func(err error) (usefulerror.UsefulError, bool) {
+		for _, matcher := range errorMatchers {
+			if matcher.match(err) {
+				return matcher.convert(err), true
+			}
+		}
+		return nil, false
+	})
+}
+
 // convertToUsefulError attempts to convert a regular error to a UsefulError
 // by analyzing the error chain for known error types.
 // Returns the original error wrapped in a generic UsefulError if no specific match is found.
@@ -164,14 +176,8 @@ func convertToUsefulError(err error) usefulerror.UsefulError {
 		return ue
 	}

-	for _, matcher := range errorMatchers {
-		if matcher.match(err) {
-			return matcher.convert(err)
-		}
-	}
-
-	return usefulerror.Useful().
-		WithCode(usefulerror.ErrCodeUnknown).
+	return usefulerror.NewUsefulError().
+		WithCode(errcodes.Unknown).
 		WithHumanError(extractRootCause(err)).
 		WithHelp("An unexpected error occurred.").
 		Wrap(err)
@@ -9,11 +9,12 @@ import (
 	"os"
 	"testing"

-	"github.com/safedep/pmg/usefulerror"
+	"github.com/safedep/dry/usefulerror"
+	"github.com/safedep/pmg/errcodes"
 	"github.com/stretchr/testify/assert"
 )

-func Test_convertToUsefulError(t *testing.T) {
+func Test_ErrorConverters(t *testing.T) {
 	tests := []struct {
 		name           string
 		inputError     error
@@ -24,60 +25,58 @@ func Test_convertToUsefulError(t *testing.T) {
 	}{
 		{
 			name: "AlreadyUseful",
-			inputError: usefulerror.Useful().
+			inputError: usefulerror.NewUsefulError().
 				WithCode("CUSTOM").
 				WithHumanError("Already useful").
-				Msg("test"),
+				WithMsg("test"),
 			wantCode:       "CUSTOM",
 			wantHumanError: "Already useful",
 		},
 		{
 			name:         "FileNotExist",
 			inputError:   &fs.PathError{Op: "open", Path: "/nonexistent/file.txt", Err: os.ErrNotExist},
-			wantCode:     usefulerror.ErrCodeNotFound,
+			wantCode:     errcodes.NotFound,
 			wantContains: "/nonexistent/file.txt",
 		},
 		{
 			name:         "PermissionDenied",
 			inputError:   &fs.PathError{Op: "open", Path: "/root/secret", Err: os.ErrPermission},
-			wantCode:     usefulerror.ErrCodePermissionDenied,
+			wantCode:     errcodes.PermissionDenied,
 			wantContains: "/root/secret",
 		},
 		{
 			name:         "ContextTimeout",
 			inputError:   context.DeadlineExceeded,
-			wantCode:     usefulerror.ErrCodeTimeout,
+			wantCode:     errcodes.Timeout,
 			wantContains: "timed out",
 		},
 		{
 			name:         "ContextCanceled",
 			inputError:   context.Canceled,
-			wantCode:     usefulerror.ErrCodeCanceled,
+			wantCode:     errcodes.Canceled,
 			wantContains: "canceled",
 		},
 		{
 			name:       "UnexpectedEOF",
 			inputError: io.ErrUnexpectedEOF,
-			wantCode:   usefulerror.ErrCodeUnexpectedEOF,
+			wantCode:   errcodes.UnexpectedEOF,
 		},
 		{
 			name:       "WrappedError",
 			inputError: fmt.Errorf("failed to read config: %w", os.ErrNotExist),
-			wantCode:   usefulerror.ErrCodeNotFound,
+			wantCode:   errcodes.NotFound,
 		},
 		{
-			name:           "UnknownError",
-			inputError:     errors.New("some unknown error"),
-			wantCode:       usefulerror.ErrCodeUnknown,
-			wantHumanError: "some unknown error",
+			name:       "UnknownError",
+			inputError: errors.New("some unknown error"),
+			wantNil:    true,
 		},
 		{
 			name: "UnknownWrappedError",
 			inputError: fmt.Errorf("more context: %w",
 				fmt.Errorf("outer context: %w",
 					errors.New("root cause error"))),
-			wantCode:       usefulerror.ErrCodeUnknown,
-			wantHumanError: "root cause error",
+			wantNil:    true,
 		},
 		{
 			name:       "Nil",
@@ -87,19 +86,20 @@ func Test_convertToUsefulError(t *testing.T) {
 		{
 			name:       "NetworkErrorMessage",
 			inputError: errors.New("connection refused"),
-			wantCode:   usefulerror.ErrCodeNetwork,
+			wantCode:   errcodes.Network,
 		},
 	}

 	for _, tt := range tests {
 		t.Run(tt.name, func(t *testing.T) {
-			result := convertToUsefulError(tt.inputError)
+			result, ok := usefulerror.AsUsefulError(tt.inputError)

 			if tt.wantNil {
-				assert.Nil(t, result)
+				assert.False(t, ok)
 				return
 			}

+			assert.True(t, ok)
 			assert.NotNil(t, result)
 			assert.Equal(t, tt.wantCode, result.Code())