modelerrors: unexport ParseRetryAfterHeader

Only called within the package (by WrapHTTPError and tests).
Rename to parseRetryAfterHeader to reduce the public API surface.

Assisted-By: docker-agent

Author: dgageot

pkg/modelerrors/modelerrors.go

@@ -55,7 +55,7 @@ func WrapHTTPError(statusCode int, resp *http.Response, err error) error {
 	}
 	var retryAfter time.Duration
 	if resp != nil {
-		retryAfter = ParseRetryAfterHeader(resp.Header.Get("Retry-After"))
+		retryAfter = parseRetryAfterHeader(resp.Header.Get("Retry-After"))
 	}
 	return &StatusError{
 		StatusCode: statusCode,
@@ -330,10 +330,10 @@ func isRetryableModelError(err error) bool {
 	return false
 }
 
-// ParseRetryAfterHeader parses a Retry-After header value.
+// parseRetryAfterHeader parses a Retry-After header value.
 // Supports both seconds (integer) and HTTP-date formats per RFC 7231 §7.1.3.
 // Returns 0 if the value is empty, invalid, or results in a non-positive duration.
-func ParseRetryAfterHeader(value string) time.Duration {
+func parseRetryAfterHeader(value string) time.Duration {
 	if value == "" {
 		return 0
 	}

pkg/modelerrors/modelerrors_test.go

@@ -261,23 +261,23 @@ func TestParseRetryAfterHeader(t *testing.T) {
 	for _, tt := range tests {
 		t.Run(tt.name, func(t *testing.T) {
 			t.Parallel()
-			got := ParseRetryAfterHeader(tt.value)
-			assert.Equal(t, tt.expected, got, "ParseRetryAfterHeader(%q)", tt.value)
+			got := parseRetryAfterHeader(tt.value)
+			assert.Equal(t, tt.expected, got, "parseRetryAfterHeader(%q)", tt.value)
 		})
 	}
 
 	t.Run("HTTP-date in the future", func(t *testing.T) {
 		t.Parallel()
 		future := time.Now().Add(10 * time.Second).UTC().Format(http.TimeFormat)
-		got := ParseRetryAfterHeader(future)
+		got := parseRetryAfterHeader(future)
 		assert.Greater(t, got, 0*time.Second, "should return positive duration for future HTTP-date")
 		assert.LessOrEqual(t, got, 11*time.Second, "should not exceed ~10s for near-future date")
 	})
 
 	t.Run("HTTP-date in the past", func(t *testing.T) {
 		t.Parallel()
 		past := time.Now().Add(-10 * time.Second).UTC().Format(http.TimeFormat)
-		got := ParseRetryAfterHeader(past)
+		got := parseRetryAfterHeader(past)
 		assert.Equal(t, 0*time.Second, got, "should return 0 for past HTTP-date")
 	})
 }