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endpoints.go
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endpoints.go
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package endpoints
import (
"context"
"sort"
"encoding/json"
"fmt"
"reflect"
workloadUtil "github.com/rancher/rancher/pkg/controllers/user/workload"
managementv3 "github.com/rancher/types/apis/management.cattle.io/v3"
"github.com/rancher/types/apis/project.cattle.io/v3"
"github.com/rancher/types/config"
"github.com/sirupsen/logrus"
corev1 "k8s.io/api/core/v1"
extensionsv1beta1 "k8s.io/api/extensions/v1beta1"
metav1 "k8s.io/apimachinery/pkg/apis/meta/v1"
"k8s.io/apimachinery/pkg/labels"
)
const (
allEndpoints = "_all_endpoints_"
endpointsAnnotation = "field.cattle.io/publicEndpoints"
)
func Register(ctx context.Context, workload *config.UserContext) {
isRKE := false
cluster, err := workload.Management.Management.Clusters("").Get(workload.ClusterName, metav1.GetOptions{})
if err != nil {
logrus.WithError(err).Warnf("Can not get cluster %s when registering endpoint controller", workload.ClusterName)
}
if cluster != nil {
//assume that cluster always has a spec
isRKE = cluster.Spec.RancherKubernetesEngineConfig != nil
}
n := &NodesController{
nodes: workload.Core.Nodes(""),
serviceLister: workload.Core.Services("").Controller().Lister(),
nodeLister: workload.Core.Nodes("").Controller().Lister(),
podLister: workload.Core.Pods("").Controller().Lister(),
machinesLister: workload.Management.Management.Nodes(workload.ClusterName).Controller().Lister(),
clusterName: workload.ClusterName,
}
workload.Core.Nodes("").AddHandler("nodesEndpointsController", n.sync)
s := &ServicesController{
services: workload.Core.Services(""),
serviceLister: workload.Core.Services("").Controller().Lister(),
nodeLister: workload.Core.Nodes("").Controller().Lister(),
nodeController: workload.Core.Nodes("").Controller(),
podLister: workload.Core.Pods("").Controller().Lister(),
podController: workload.Core.Pods("").Controller(),
workloadController: workloadUtil.NewWorkloadController(workload.UserOnlyContext(), nil),
machinesLister: workload.Management.Management.Nodes(workload.ClusterName).Controller().Lister(),
}
workload.Core.Services("").AddHandler("servicesEndpointsController", s.sync)
p := &PodsController{
nodeLister: workload.Core.Nodes("").Controller().Lister(),
nodeController: workload.Core.Nodes("").Controller(),
pods: workload.Core.Pods(""),
serviceLister: workload.Core.Services("").Controller().Lister(),
podLister: workload.Core.Pods("").Controller().Lister(),
workloadController: workloadUtil.NewWorkloadController(workload.UserOnlyContext(), nil),
machinesLister: workload.Management.Management.Nodes(workload.ClusterName).Controller().Lister(),
clusterName: workload.ClusterName,
}
workload.Core.Pods("").AddHandler("hostPortEndpointsController", p.sync)
w := &WorkloadEndpointsController{
ingressLister: workload.Extensions.Ingresses("").Controller().Lister(),
serviceLister: workload.Core.Services("").Controller().Lister(),
podLister: workload.Core.Pods("").Controller().Lister(),
machinesLister: workload.Management.Management.Nodes(workload.ClusterName).Controller().Lister(),
clusterName: workload.ClusterName,
isRKE: isRKE,
}
w.WorkloadController = workloadUtil.NewWorkloadController(workload.UserOnlyContext(), w.UpdateEndpoints)
i := &IngressEndpointsController{
workloadController: workloadUtil.NewWorkloadController(workload.UserOnlyContext(), nil),
ingressInterface: workload.Extensions.Ingresses(""),
isRKE: isRKE,
}
workload.Extensions.Ingresses("").AddHandler("ingressEndpointsController", i.sync)
}
func areEqualEndpoints(one []v3.PublicEndpoint, two []v3.PublicEndpoint) bool {
oneMap := make(map[string]bool)
twoMap := make(map[string]bool)
for _, value := range one {
oneMap[publicEndpointToString(value)] = true
}
for _, value := range two {
twoMap[publicEndpointToString(value)] = true
}
return reflect.DeepEqual(oneMap, twoMap)
}
func publicEndpointsToString(eps []v3.PublicEndpoint) (string, error) {
b, err := json.Marshal(eps)
if err != nil {
return "", err
}
return string(b), nil
}
func getPublicEndpointsFromAnnotations(annotations map[string]string) []v3.PublicEndpoint {
var eps []v3.PublicEndpoint
if annotations == nil {
return eps
}
if val, ok := annotations[endpointsAnnotation]; ok {
err := json.Unmarshal([]byte(val), &eps)
if err != nil {
logrus.Errorf("Failed to read public endpoints from annotation %v", err)
return eps
}
}
return eps
}
func getEndpointNodeIP(node *managementv3.Node) string {
externalIP := ""
internalIP := ""
for _, ip := range node.Status.InternalNodeStatus.Addresses {
if ip.Type == "ExternalIP" && ip.Address != "" {
externalIP = ip.Address
break
} else if ip.Type == "InternalIP" && ip.Address != "" {
internalIP = ip.Address
}
}
if externalIP != "" {
return externalIP
}
return internalIP
}
func convertServiceToPublicEndpoints(svc *corev1.Service, clusterName string, node *managementv3.Node) ([]v3.PublicEndpoint, error) {
var eps []v3.PublicEndpoint
if svc.DeletionTimestamp != nil {
return eps, nil
}
if !(svc.Spec.Type == "NodePort" || svc.Spec.Type == "LoadBalancer") {
return eps, nil
}
address := ""
nodeName := ""
if node != nil {
address = getEndpointNodeIP(node)
nodeName = fmt.Sprintf("%s:%s", clusterName, node.Name)
}
svcName := fmt.Sprintf("%s:%s", svc.Namespace, svc.Name)
if svc.Spec.Type == "NodePort" {
for _, port := range svc.Spec.Ports {
if port.NodePort == 0 {
continue
}
p := v3.PublicEndpoint{
NodeName: nodeName,
Port: port.NodePort,
Addresses: []string{},
Protocol: string(port.Protocol),
ServiceName: svcName,
AllNodes: true,
}
//for getting endpoints of specific node
if address != "" {
p.Addresses = append(p.Addresses, address)
}
eps = append(eps, p)
}
} else {
var addresses []string
for _, ingressEp := range svc.Status.LoadBalancer.Ingress {
address := ingressEp.Hostname
if address == "" {
address = ingressEp.IP
}
addresses = append(addresses, address)
}
for _, port := range svc.Spec.Ports {
p := v3.PublicEndpoint{
NodeName: "",
Addresses: addresses,
Port: port.Port,
Protocol: string(port.Protocol),
ServiceName: svcName,
AllNodes: false,
}
eps = append(eps, p)
}
}
return eps, nil
}
func convertHostPortToEndpoint(pod *corev1.Pod, clusterName string, node *managementv3.Node) ([]v3.PublicEndpoint, error) {
var eps []v3.PublicEndpoint
if pod.DeletionTimestamp != nil {
return eps, nil
}
if pod.Status.Phase != corev1.PodRunning {
return eps, nil
}
if node == nil {
return eps, nil
}
for _, c := range pod.Spec.Containers {
for _, p := range c.Ports {
if p.HostPort == 0 {
continue
}
address := getEndpointNodeIP(node)
p := v3.PublicEndpoint{
NodeName: fmt.Sprintf("%s:%s", clusterName, node.Name),
Addresses: []string{address},
Port: p.HostPort,
Protocol: string(p.Protocol),
PodName: fmt.Sprintf("%s:%s", pod.Namespace, pod.Name),
AllNodes: false,
}
eps = append(eps, p)
}
}
return eps, nil
}
func publicEndpointToString(p v3.PublicEndpoint) string {
sort.Strings(p.Addresses)
return fmt.Sprintf("%s_%v_%v_%s_%s_%s_%s_%s_%s", p.NodeName, p.Addresses, p.Port, p.Protocol, p.ServiceName, p.PodName, p.IngressName, p.Hostname, p.Path)
}
func getNodeNameToMachine(clusterName string, machineLister managementv3.NodeLister) (map[string]*managementv3.Node, error) {
machines, err := machineLister.List(clusterName, labels.NewSelector())
if err != nil {
return nil, err
}
machineMap := make(map[string]*managementv3.Node)
for _, machine := range machines {
if machine.Status.NodeName == "" {
if machine.Status.NodeConfig != nil {
if machine.Status.NodeConfig.HostnameOverride != "" {
machineMap[machine.Status.NodeConfig.HostnameOverride] = machine
}
}
} else {
machineMap[machine.Status.NodeName] = machine
}
}
return machineMap, nil
}
func convertIngressToServicePublicEndpointsMap(obj *extensionsv1beta1.Ingress, isRKE bool) (map[string][]v3.PublicEndpoint, error) {
var addresses []string
allNode := isRKE
if !isRKE {
for _, address := range obj.Status.LoadBalancer.Ingress {
addresses = append(addresses, address.IP)
}
}
epsMap := make(map[string][]v3.PublicEndpoint)
for _, rule := range obj.Spec.Rules {
for _, path := range rule.HTTP.Paths {
p := v3.PublicEndpoint{
Hostname: rule.Host,
Path: path.Path,
ServiceName: fmt.Sprintf("%s:%s", obj.Namespace, path.Backend.ServiceName),
Addresses: addresses,
// set to HTTP by default because ingress controller should update to https if the path need tls
Protocol: "HTTP",
AllNodes: allNode,
IngressName: fmt.Sprintf("%s:%s", obj.Namespace, obj.Name),
}
v := epsMap[path.Backend.ServiceName]
epsMap[path.Backend.ServiceName] = append(v, p)
}
}
return epsMap, nil
}
func convertIngressToPublicEndpoints(obj *extensionsv1beta1.Ingress, isRKE bool) ([]v3.PublicEndpoint, error) {
epsMap, err := convertIngressToServicePublicEndpointsMap(obj, isRKE)
if err != nil {
return nil, err
}
var eps []v3.PublicEndpoint
for _, v := range epsMap {
eps = append(eps, v...)
}
return eps, nil
}