Method FindRateLimitRule

core/settings_model.go:617–645

FindRateLimitRule returns the first matching rule based on the provided labels. Optionally you can further specify a list of valid RateLimitRule.Audience values to further filter the matching rule (aka. the rule Audience will have to exist in one of the specified options).

(searchLabels []string, optOnlyAudience ...string)

// Optionally you can further specify a list of valid RateLimitRule.Audience values to further filter the matching rule
// (aka. the rule Audience will have to exist in one of the specified options).
func (c *RateLimitsConfig) FindRateLimitRule(searchLabels []string, optOnlyAudience ...string) (RateLimitRule, bool) {
	var prefixRules []int

	for i, label := range searchLabels {
		// check for direct match
		for j := range c.Rules {
			if label == c.Rules[j].Label &&
				(len(optOnlyAudience) == 0 || slices.Contains(optOnlyAudience, c.Rules[j].Audience)) {
				return c.Rules[j], true
			}

			if i == 0 && strings.HasSuffix(c.Rules[j].Label, "/") {
				prefixRules = append(prefixRules, j)
			}
		}

		// check for prefix match
		if len(prefixRules) > 0 {
			for j := range prefixRules {
				if strings.HasPrefix(label+"/", c.Rules[prefixRules[j]].Label) &&
					(len(optOnlyAudience) == 0 || slices.Contains(optOnlyAudience, c.Rules[prefixRules[j]].Audience)) {
					return c.Rules[prefixRules[j]], true
				}
			}
		}
	}

	return RateLimitRule{}, false
}

// MarshalJSON implements the [json.Marshaler] interface.
func (c RateLimitsConfig) MarshalJSON() ([]byte, error) {