mirror of
https://github.com/traefik/traefik.git
synced 2025-10-31 08:21:27 +01:00
294 lines
8.6 KiB
Go
294 lines
8.6 KiB
Go
package crd
|
|
|
|
import (
|
|
"context"
|
|
"errors"
|
|
"fmt"
|
|
"net"
|
|
"strconv"
|
|
"strings"
|
|
|
|
"github.com/traefik/traefik/v2/pkg/config/dynamic"
|
|
"github.com/traefik/traefik/v2/pkg/log"
|
|
"github.com/traefik/traefik/v2/pkg/provider"
|
|
"github.com/traefik/traefik/v2/pkg/provider/kubernetes/crd/traefik/v1alpha1"
|
|
"github.com/traefik/traefik/v2/pkg/tls"
|
|
corev1 "k8s.io/api/core/v1"
|
|
)
|
|
|
|
func (p *Provider) loadIngressRouteTCPConfiguration(ctx context.Context, client Client, tlsConfigs map[string]*tls.CertAndStores) *dynamic.TCPConfiguration {
|
|
conf := &dynamic.TCPConfiguration{
|
|
Routers: map[string]*dynamic.TCPRouter{},
|
|
Middlewares: map[string]*dynamic.TCPMiddleware{},
|
|
Services: map[string]*dynamic.TCPService{},
|
|
}
|
|
|
|
for _, ingressRouteTCP := range client.GetIngressRouteTCPs() {
|
|
logger := log.FromContext(log.With(ctx, log.Str("ingress", ingressRouteTCP.Name), log.Str("namespace", ingressRouteTCP.Namespace)))
|
|
|
|
if !shouldProcessIngress(p.IngressClass, ingressRouteTCP.Annotations[annotationKubernetesIngressClass]) {
|
|
continue
|
|
}
|
|
|
|
if ingressRouteTCP.Spec.TLS != nil && !ingressRouteTCP.Spec.TLS.Passthrough {
|
|
err := getTLSTCP(ctx, ingressRouteTCP, client, tlsConfigs)
|
|
if err != nil {
|
|
logger.Errorf("Error configuring TLS: %v", err)
|
|
}
|
|
}
|
|
|
|
ingressName := ingressRouteTCP.Name
|
|
if len(ingressName) == 0 {
|
|
ingressName = ingressRouteTCP.GenerateName
|
|
}
|
|
|
|
for _, route := range ingressRouteTCP.Spec.Routes {
|
|
if len(route.Match) == 0 {
|
|
logger.Errorf("Empty match rule")
|
|
continue
|
|
}
|
|
|
|
key, err := makeServiceKey(route.Match, ingressName)
|
|
if err != nil {
|
|
logger.Error(err)
|
|
continue
|
|
}
|
|
|
|
mds, err := p.makeMiddlewareTCPKeys(ctx, ingressRouteTCP.Namespace, route.Middlewares)
|
|
if err != nil {
|
|
logger.Errorf("Failed to create middleware keys: %v", err)
|
|
continue
|
|
}
|
|
|
|
serviceName := makeID(ingressRouteTCP.Namespace, key)
|
|
|
|
for _, service := range route.Services {
|
|
balancerServerTCP, err := p.createLoadBalancerServerTCP(client, ingressRouteTCP.Namespace, service)
|
|
if err != nil {
|
|
logger.
|
|
WithField("serviceName", service.Name).
|
|
WithField("servicePort", service.Port).
|
|
Errorf("Cannot create service: %v", err)
|
|
continue
|
|
}
|
|
|
|
// If there is only one service defined, we skip the creation of the load balancer of services,
|
|
// i.e. the service on top is directly a load balancer of servers.
|
|
if len(route.Services) == 1 {
|
|
conf.Services[serviceName] = balancerServerTCP
|
|
break
|
|
}
|
|
|
|
serviceKey := fmt.Sprintf("%s-%s-%s", serviceName, service.Name, &service.Port)
|
|
conf.Services[serviceKey] = balancerServerTCP
|
|
|
|
srv := dynamic.TCPWRRService{Name: serviceKey}
|
|
srv.SetDefaults()
|
|
if service.Weight != nil {
|
|
srv.Weight = service.Weight
|
|
}
|
|
|
|
if conf.Services[serviceName] == nil {
|
|
conf.Services[serviceName] = &dynamic.TCPService{Weighted: &dynamic.TCPWeightedRoundRobin{}}
|
|
}
|
|
conf.Services[serviceName].Weighted.Services = append(conf.Services[serviceName].Weighted.Services, srv)
|
|
}
|
|
|
|
r := &dynamic.TCPRouter{
|
|
EntryPoints: ingressRouteTCP.Spec.EntryPoints,
|
|
Middlewares: mds,
|
|
Rule: route.Match,
|
|
Priority: route.Priority,
|
|
Service: serviceName,
|
|
}
|
|
|
|
if ingressRouteTCP.Spec.TLS != nil {
|
|
r.TLS = &dynamic.RouterTCPTLSConfig{
|
|
Passthrough: ingressRouteTCP.Spec.TLS.Passthrough,
|
|
CertResolver: ingressRouteTCP.Spec.TLS.CertResolver,
|
|
Domains: ingressRouteTCP.Spec.TLS.Domains,
|
|
}
|
|
|
|
if ingressRouteTCP.Spec.TLS.Options != nil && len(ingressRouteTCP.Spec.TLS.Options.Name) > 0 {
|
|
tlsOptionsName := ingressRouteTCP.Spec.TLS.Options.Name
|
|
// Is a Kubernetes CRD reference (i.e. not a cross-provider reference)
|
|
ns := ingressRouteTCP.Spec.TLS.Options.Namespace
|
|
if !strings.Contains(tlsOptionsName, providerNamespaceSeparator) {
|
|
if len(ns) == 0 {
|
|
ns = ingressRouteTCP.Namespace
|
|
}
|
|
tlsOptionsName = makeID(ns, tlsOptionsName)
|
|
} else if len(ns) > 0 {
|
|
logger.
|
|
WithField("TLSOption", ingressRouteTCP.Spec.TLS.Options.Name).
|
|
Warnf("Namespace %q is ignored in cross-provider context", ns)
|
|
}
|
|
|
|
if !isNamespaceAllowed(p.AllowCrossNamespace, ingressRouteTCP.Namespace, ns) {
|
|
logger.Errorf("TLSOption %s/%s is not in the IngressRouteTCP namespace %s",
|
|
ns, ingressRouteTCP.Spec.TLS.Options.Name, ingressRouteTCP.Namespace)
|
|
continue
|
|
}
|
|
|
|
r.TLS.Options = tlsOptionsName
|
|
}
|
|
}
|
|
|
|
conf.Routers[serviceName] = r
|
|
}
|
|
}
|
|
|
|
return conf
|
|
}
|
|
|
|
func (p *Provider) makeMiddlewareTCPKeys(ctx context.Context, ingRouteTCPNamespace string, middlewares []v1alpha1.ObjectReference) ([]string, error) {
|
|
var mds []string
|
|
|
|
for _, mi := range middlewares {
|
|
if strings.Contains(mi.Name, providerNamespaceSeparator) {
|
|
if len(mi.Namespace) > 0 {
|
|
log.FromContext(ctx).
|
|
WithField(log.MiddlewareName, mi.Name).
|
|
Warnf("namespace %q is ignored in cross-provider context", mi.Namespace)
|
|
}
|
|
mds = append(mds, mi.Name)
|
|
continue
|
|
}
|
|
|
|
ns := ingRouteTCPNamespace
|
|
if len(mi.Namespace) > 0 {
|
|
if !isNamespaceAllowed(p.AllowCrossNamespace, ingRouteTCPNamespace, mi.Namespace) {
|
|
return nil, fmt.Errorf("middleware %s/%s is not in the IngressRouteTCP namespace %s", mi.Namespace, mi.Name, ingRouteTCPNamespace)
|
|
}
|
|
|
|
ns = mi.Namespace
|
|
}
|
|
|
|
mds = append(mds, provider.Normalize(makeID(ns, mi.Name)))
|
|
}
|
|
|
|
return mds, nil
|
|
}
|
|
|
|
func (p *Provider) createLoadBalancerServerTCP(client Client, parentNamespace string, service v1alpha1.ServiceTCP) (*dynamic.TCPService, error) {
|
|
ns := parentNamespace
|
|
if len(service.Namespace) > 0 {
|
|
if !isNamespaceAllowed(p.AllowCrossNamespace, parentNamespace, service.Namespace) {
|
|
return nil, fmt.Errorf("tcp service %s/%s is not in the parent resource namespace %s", service.Namespace, service.Name, parentNamespace)
|
|
}
|
|
|
|
ns = service.Namespace
|
|
}
|
|
|
|
servers, err := p.loadTCPServers(client, ns, service)
|
|
if err != nil {
|
|
return nil, err
|
|
}
|
|
|
|
tcpService := &dynamic.TCPService{
|
|
LoadBalancer: &dynamic.TCPServersLoadBalancer{
|
|
Servers: servers,
|
|
},
|
|
}
|
|
|
|
if service.ProxyProtocol != nil {
|
|
tcpService.LoadBalancer.ProxyProtocol = &dynamic.ProxyProtocol{}
|
|
tcpService.LoadBalancer.ProxyProtocol.SetDefaults()
|
|
|
|
if service.ProxyProtocol.Version != 0 {
|
|
tcpService.LoadBalancer.ProxyProtocol.Version = service.ProxyProtocol.Version
|
|
}
|
|
}
|
|
|
|
if service.TerminationDelay != nil {
|
|
tcpService.LoadBalancer.TerminationDelay = service.TerminationDelay
|
|
}
|
|
|
|
return tcpService, nil
|
|
}
|
|
|
|
func (p *Provider) loadTCPServers(client Client, namespace string, svc v1alpha1.ServiceTCP) ([]dynamic.TCPServer, error) {
|
|
service, exists, err := client.GetService(namespace, svc.Name)
|
|
if err != nil {
|
|
return nil, err
|
|
}
|
|
|
|
if !exists {
|
|
return nil, errors.New("service not found")
|
|
}
|
|
|
|
if service.Spec.Type == corev1.ServiceTypeExternalName && !p.AllowExternalNameServices {
|
|
return nil, fmt.Errorf("externalName services not allowed: %s/%s", namespace, svc.Name)
|
|
}
|
|
|
|
svcPort, err := getServicePort(service, svc.Port)
|
|
if err != nil {
|
|
return nil, err
|
|
}
|
|
|
|
var servers []dynamic.TCPServer
|
|
if service.Spec.Type == corev1.ServiceTypeExternalName {
|
|
servers = append(servers, dynamic.TCPServer{
|
|
Address: net.JoinHostPort(service.Spec.ExternalName, strconv.Itoa(int(svcPort.Port))),
|
|
})
|
|
} else {
|
|
endpoints, endpointsExists, endpointsErr := client.GetEndpoints(namespace, svc.Name)
|
|
if endpointsErr != nil {
|
|
return nil, endpointsErr
|
|
}
|
|
|
|
if !endpointsExists {
|
|
return nil, errors.New("endpoints not found")
|
|
}
|
|
|
|
if len(endpoints.Subsets) == 0 && !p.AllowEmptyServices {
|
|
return nil, errors.New("subset not found")
|
|
}
|
|
|
|
var port int32
|
|
for _, subset := range endpoints.Subsets {
|
|
for _, p := range subset.Ports {
|
|
if svcPort.Name == p.Name {
|
|
port = p.Port
|
|
break
|
|
}
|
|
}
|
|
|
|
if port == 0 {
|
|
return nil, errors.New("cannot define a port")
|
|
}
|
|
|
|
for _, addr := range subset.Addresses {
|
|
servers = append(servers, dynamic.TCPServer{
|
|
Address: net.JoinHostPort(addr.IP, strconv.Itoa(int(port))),
|
|
})
|
|
}
|
|
}
|
|
}
|
|
|
|
return servers, nil
|
|
}
|
|
|
|
// getTLSTCP mutates tlsConfigs.
|
|
func getTLSTCP(ctx context.Context, ingressRoute *v1alpha1.IngressRouteTCP, k8sClient Client, tlsConfigs map[string]*tls.CertAndStores) error {
|
|
if ingressRoute.Spec.TLS == nil {
|
|
return nil
|
|
}
|
|
if ingressRoute.Spec.TLS.SecretName == "" {
|
|
log.FromContext(ctx).Debugf("No secret name provided")
|
|
return nil
|
|
}
|
|
|
|
configKey := ingressRoute.Namespace + "/" + ingressRoute.Spec.TLS.SecretName
|
|
if _, tlsExists := tlsConfigs[configKey]; !tlsExists {
|
|
tlsConf, err := getTLS(k8sClient, ingressRoute.Spec.TLS.SecretName, ingressRoute.Namespace)
|
|
if err != nil {
|
|
return err
|
|
}
|
|
|
|
tlsConfigs[configKey] = tlsConf
|
|
}
|
|
|
|
return nil
|
|
}
|