func (v *vulcan) NewMiddlewares(rsc *kubernetes.Resource) ([]loadbalancer.Middleware, error) {
mids := make([]loadbalancer.Middleware, 0, 1)
for key, def := range DefaultMiddleware {
if val, ok := rsc.GetAnnotation(key); ok && len(val) > 0 {
switch key {
case RedirectSSLID:
if b, er := strconv.ParseBool(val); er != nil || !b {
continue
}
case TraceID:
re := regexp.MustCompile(`\s+`)
list, er := json.Marshal(strings.Split(re.ReplaceAllString(val, ""), ","))
if er != nil || string(list) == "" {
logger.Warnf("Unable to json-ify trace headers: %v", er)
list = []byte("[]")
}
def = fmt.Sprintf(def, string(list), string(list))
case AuthID:
bits := strings.SplitN(val, ":", 2)
switch len(bits) {
case 1:
def = fmt.Sprintf(def, bits[0], "")
case 2:
def = fmt.Sprintf(def, bits[0], bits[1])
default:
logger.Errorf("Failed to parse provided basic auth, using default (admin:admin)")
def = fmt.Sprintf(def, "admin", "admin")
}
case MaintenanceID:
def = fmt.Sprintf(def, val)
}
m, er := engine.MiddlewareFromJSON([]byte(def), v.Registry.GetSpec, key)
if er != nil {
logger.Warnf("Failed to parse Middleware %s: %v", key, er)
logger.Debugf("%q", def)
continue
}
mids = append(mids, newMiddleware(m))
}
}
rg := regexp.MustCompile(CustomMiddlewareKeyPattern)
matches, _ := rsc.GetAnnotations(CustomMiddlewareKeyPattern)
for key, val := range matches {
if match := rg.FindStringSubmatch(key); match != nil {
id := match[1]
m, er := engine.MiddlewareFromJSON([]byte(val), v.Registry.GetSpec, id)
if er != nil {
logger.Warnf("Failed to parse Middleware %s: %v", id, er)
continue
}
mids = append(mids, newMiddleware(m))
}
}
return mids, nil
}
func (t *traefik) NewFrontend(rsc *kubernetes.Resource) (loadbalancer.Frontend, error) {
f := types.Frontend{Backend: rsc.ID(), PassHostHeader: false}
f.Routes = NewRoute(rsc.Route)
if phh, ok := rsc.GetAnnotation(loadbalancer.PassHostHeaderKey); ok {
if val, er := strconv.ParseBool(phh); er == nil {
f.PassHostHeader = val
}
}
return &frontend{Frontend: f, id: rsc.ID(), middlewares: make([]*middleware, 0, 1)}, nil
}
func (v *vulcan) NewBackend(rsc *kubernetes.Resource) (loadbalancer.Backend, error) {
s := engine.HTTPBackendSettings{
Timeouts: engine.HTTPBackendTimeouts{},
KeepAlive: engine.HTTPBackendKeepAlive{},
}
if val, ok := rsc.GetAnnotation(DailTimeoutKey); ok {
s.Timeouts.Dial = val
}
if val, ok := rsc.GetAnnotation(ReadTimeoutKey); ok {
s.Timeouts.Read = val
}
if val, ok := rsc.GetAnnotation(MaxIdleConnsKey); ok {
if i, er := strconv.Atoi(val); er == nil {
s.KeepAlive.MaxIdleConnsPerHost = i
}
}
if val, ok := rsc.GetAnnotation(loadbalancer.BackendSettingsKey); ok {
if er := json.Unmarshal([]byte(val), &s); er != nil {
logger.Warnf("Failed to parse settings for frontend %q: %v", rsc.ID, er)
}
}
b, er := engine.NewHTTPBackend(rsc.ID(), s)
if er != nil {
return nil, er
}
if rsc.IsWebsocket() {
b.Type = ws
}
return newBackend(b), nil
}
func (v *vulcan) NewFrontend(rsc *kubernetes.Resource) (loadbalancer.Frontend, error) {
s := engine.HTTPFrontendSettings{}
if val, ok := rsc.GetAnnotation(loadbalancer.PassHostHeaderKey); ok {
b, _ := strconv.ParseBool(val)
s.PassHostHeader = b
}
if val, ok := rsc.GetAnnotation(loadbalancer.TrustForwardHeadersKey); ok {
b, _ := strconv.ParseBool(val)
s.TrustForwardHeader = b
}
if val, ok := rsc.GetAnnotation(loadbalancer.FailoverExpressionKey); ok {
s.FailoverPredicate = val
}
if val, ok := rsc.GetAnnotation(loadbalancer.FrontendSettingsKey); ok {
if er := json.Unmarshal([]byte(val), &s); er != nil {
logger.Warnf("Failed to parse settings for frontend %q: %v", rsc.ID, er)
}
}
f, er := engine.NewHTTPFrontend(vroute.NewMux(), rsc.ID(), rsc.ID(), NewRoute(rsc.Route).String(), s)
if er != nil {
return nil, er
}
return newFrontend(f), nil
}
func (t *traefik) NewBackend(rsc *kubernetes.Resource) (loadbalancer.Backend, error) {
// b := new(types.Backend)
b := &types.Backend{
LoadBalancer: defaultLoadBalancerMethod,
CircuitBreaker: defaultCircuitBreaker,
}
b.Servers = make(map[string]types.Server)
if lbm, ok := rsc.GetAnnotation(LoadbalancingMethodKey); ok && validLBM(lbm) {
b.LoadBalancer = &types.LoadBalancer{Method: lbm}
}
if exp, ok := rsc.GetAnnotation(loadbalancer.FailoverExpressionKey); ok {
b.CircuitBreaker = &types.CircuitBreaker{Expression: exp}
}
return &backend{Backend: *b, id: rsc.ID()}, nil
}