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refactor(fetcher): minor refactoring #3752

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refactor(fetcher): minor refactoring #3752

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37 changes: 19 additions & 18 deletions internal/reader/fetcher/response_handler.go
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Original file line number Diff line number Diff line change
Expand Up @@ -68,11 +68,9 @@ func (r *ResponseHandler) Expires() time.Duration {
func (r *ResponseHandler) CacheControlMaxAge() time.Duration {
cacheControlHeaderValue := r.httpResponse.Header.Get("Cache-Control")
if cacheControlHeaderValue != "" {
for _, directive := range strings.Split(cacheControlHeaderValue, ",") {
directive = strings.TrimSpace(directive)
if strings.HasPrefix(directive, "max-age=") {
maxAge, err := strconv.Atoi(strings.TrimPrefix(directive, "max-age="))
if err == nil {
for directive := range strings.SplitSeq(cacheControlHeaderValue, ",") {
if after, ok := strings.CutPrefix(strings.TrimSpace(directive), "max-age="); ok {
if maxAge, err := strconv.Atoi(after); err == nil {
return time.Duration(maxAge) * time.Second
}
}
Expand Down Expand Up @@ -144,9 +142,9 @@ func (r *ResponseHandler) getReader(maxBodySize int64) io.ReadCloser {
reader := r.httpResponse.Body
switch contentEncoding {
case "br":
reader = NewBrotliReadCloser(r.httpResponse.Body)
reader = NewBrotliReadCloser(reader)
case "gzip":
reader = NewGzipReadCloser(r.httpResponse.Body)
reader = NewGzipReadCloser(reader)
}
return http.MaxBytesReader(nil, reader, maxBodySize)
}
Expand Down Expand Up @@ -176,17 +174,18 @@ func (r *ResponseHandler) ReadBody(maxBodySize int64) ([]byte, *locale.Localized

func (r *ResponseHandler) LocalizedError() *locale.LocalizedErrorWrapper {
if r.clientErr != nil {
err := fmt.Errorf("fetcher: %w", r.clientErr)
switch {
case isSSLError(r.clientErr):
return locale.NewLocalizedErrorWrapper(fmt.Errorf("fetcher: %w", r.clientErr), "error.tls_error", r.clientErr)
return locale.NewLocalizedErrorWrapper(err, "error.tls_error", r.clientErr)
case isNetworkError(r.clientErr):
return locale.NewLocalizedErrorWrapper(fmt.Errorf("fetcher: %w", r.clientErr), "error.network_operation", r.clientErr)
return locale.NewLocalizedErrorWrapper(err, "error.network_operation", r.clientErr)
case os.IsTimeout(r.clientErr):
return locale.NewLocalizedErrorWrapper(fmt.Errorf("fetcher: %w", r.clientErr), "error.network_timeout", r.clientErr)
return locale.NewLocalizedErrorWrapper(err, "error.network_timeout", r.clientErr)
case errors.Is(r.clientErr, io.EOF):
return locale.NewLocalizedErrorWrapper(fmt.Errorf("fetcher: %w", r.clientErr), "error.http_empty_response")
return locale.NewLocalizedErrorWrapper(err, "error.http_empty_response")
default:
return locale.NewLocalizedErrorWrapper(fmt.Errorf("fetcher: %w", r.clientErr), "error.http_client_error", r.clientErr)
return locale.NewLocalizedErrorWrapper(err, "error.http_client_error", r.clientErr)
}
}

Expand All @@ -197,16 +196,18 @@ func (r *ResponseHandler) LocalizedError() *locale.LocalizedErrorWrapper {
return locale.NewLocalizedErrorWrapper(errors.New("fetcher: access forbidden (403 status code)"), "error.http_forbidden")
case http.StatusTooManyRequests:
return locale.NewLocalizedErrorWrapper(errors.New("fetcher: too many requests (429 status code)"), "error.http_too_many_requests")
case http.StatusNotFound, http.StatusGone:
return locale.NewLocalizedErrorWrapper(fmt.Errorf("fetcher: resource not found (%d status code)", r.httpResponse.StatusCode), "error.http_resource_not_found")
case http.StatusNotFound:
return locale.NewLocalizedErrorWrapper(errors.New("fetcher: resource not found (404 status code)"), "error.http_resource_not_found")
case http.StatusGone:
return locale.NewLocalizedErrorWrapper(errors.New("fetcher: resource not found (410 status code)"), "error.http_resource_not_found")
case http.StatusInternalServerError:
return locale.NewLocalizedErrorWrapper(fmt.Errorf("fetcher: remote server error (%d status code)", r.httpResponse.StatusCode), "error.http_internal_server_error")
return locale.NewLocalizedErrorWrapper(errors.New("fetcher: remote server error (500 status code)"), "error.http_internal_server_error")
case http.StatusBadGateway:
return locale.NewLocalizedErrorWrapper(fmt.Errorf("fetcher: bad gateway (%d status code)", r.httpResponse.StatusCode), "error.http_bad_gateway")
return locale.NewLocalizedErrorWrapper(errors.New("fetcher: bad gateway (502 status code)"), "error.http_bad_gateway")
case http.StatusServiceUnavailable:
return locale.NewLocalizedErrorWrapper(fmt.Errorf("fetcher: service unavailable (%d status code)", r.httpResponse.StatusCode), "error.http_service_unavailable")
return locale.NewLocalizedErrorWrapper(errors.New("fetcher: service unavailable (503 status code)"), "error.http_service_unavailable")
case http.StatusGatewayTimeout:
return locale.NewLocalizedErrorWrapper(fmt.Errorf("fetcher: gateway timeout (%d status code)", r.httpResponse.StatusCode), "error.http_gateway_timeout")
return locale.NewLocalizedErrorWrapper(errors.New("fetcher: gateway timeout (504 status code)"), "error.http_gateway_timeout")
}

if r.httpResponse.StatusCode >= 400 {
Expand Down
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