110 lines
2.9 KiB
Go
110 lines
2.9 KiB
Go
package ingress
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import (
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"regexp"
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"strings"
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"github.com/traefik/traefik/v3/pkg/config/dynamic"
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"github.com/traefik/traefik/v3/pkg/config/label"
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)
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const (
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// https://kubernetes.io/docs/concepts/overview/working-with-objects/annotations/#syntax-and-character-set
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annotationsPrefix = "traefik.ingress.kubernetes.io/"
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)
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var annotationsRegex = regexp.MustCompile(`(.+)\.(\w+)\.(\d+)\.(.+)`)
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// RouterConfig is the router's root configuration from annotations.
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type RouterConfig struct {
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Router *RouterIng `json:"router,omitempty"`
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}
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// RouterIng is the router's configuration from annotations.
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type RouterIng struct {
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PathMatcher string `json:"pathMatcher,omitempty"`
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EntryPoints []string `json:"entryPoints,omitempty"`
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Middlewares []string `json:"middlewares,omitempty"`
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Priority int `json:"priority,omitempty"`
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TLS *dynamic.RouterTLSConfig `json:"tls,omitempty" label:"allowEmpty"`
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}
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// SetDefaults sets the default values.
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func (r *RouterIng) SetDefaults() {
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r.PathMatcher = defaultPathMatcher
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}
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// ServiceConfig is the service's root configuration from annotations.
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type ServiceConfig struct {
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Service *ServiceIng `json:"service,omitempty"`
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}
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// ServiceIng is the service's configuration from annotations.
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type ServiceIng struct {
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ServersScheme string `json:"serversScheme,omitempty"`
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ServersTransport string `json:"serversTransport,omitempty"`
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PassHostHeader *bool `json:"passHostHeader"`
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Sticky *dynamic.Sticky `json:"sticky,omitempty" label:"allowEmpty"`
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NativeLB *bool `json:"nativeLB,omitempty"`
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}
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// SetDefaults sets the default values.
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func (s *ServiceIng) SetDefaults() {
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s.PassHostHeader = func(v bool) *bool { return &v }(true)
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}
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func parseRouterConfig(annotations map[string]string) (*RouterConfig, error) {
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labels := convertAnnotations(annotations)
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if len(labels) == 0 {
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return nil, nil
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}
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cfg := &RouterConfig{}
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err := label.Decode(labels, cfg, "traefik.router.")
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if err != nil {
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return nil, err
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}
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return cfg, nil
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}
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func parseServiceConfig(annotations map[string]string) (*ServiceConfig, error) {
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labels := convertAnnotations(annotations)
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if len(labels) == 0 {
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return nil, nil
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}
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cfg := &ServiceConfig{}
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err := label.Decode(labels, cfg, "traefik.service.")
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if err != nil {
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return nil, err
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}
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return cfg, nil
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}
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func convertAnnotations(annotations map[string]string) map[string]string {
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if len(annotations) == 0 {
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return nil
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}
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result := make(map[string]string)
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for key, value := range annotations {
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if !strings.HasPrefix(key, annotationsPrefix) {
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continue
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}
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newKey := strings.ReplaceAll(key, "ingress.kubernetes.io/", "")
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if annotationsRegex.MatchString(newKey) {
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newKey = annotationsRegex.ReplaceAllString(newKey, "$1.$2[$3].$4")
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}
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result[newKey] = value
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}
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return result
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}
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