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endpoints.go
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/
endpoints.go
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package endpoints
import (
"context"
"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"
"k8s.io/apimachinery/pkg/labels"
)
const (
allEndpoints = "_all_endpoints_"
endpointsAnnotation = "field.cattle.io/publicEndpoints"
)
func Register(ctx context.Context, workload *config.UserContext) {
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{
serviceLister: workload.Core.Services("").Controller().Lister(),
podLister: workload.Core.Pods("").Controller().Lister(),
machinesLister: workload.Management.Management.Nodes(workload.ClusterName).Controller().Lister(),
clusterName: workload.ClusterName,
}
w.WorkloadController = workloadUtil.NewWorkloadController(workload.UserOnlyContext(), w.UpdateEndpoints)
}
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 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
}
var address string
var nodeName string
nodePort := svc.Spec.Type == "NodePort"
if node != nil {
if val, ok := node.Status.NodeAnnotations["alpha.kubernetes.io/provided-node-ip"]; ok {
nodeIP := string(val)
if nodeIP == "" {
logrus.Warnf("Node [%s] has no ip address set", node.Name)
} else {
address = nodeIP
}
}
nodeName = fmt.Sprintf("%s:%s", clusterName, node.Name)
} else if nodePort {
address = ""
}
svcName := fmt.Sprintf("%s:%s", svc.Namespace, svc.Name)
if nodePort {
for _, port := range svc.Spec.Ports {
if port.NodePort == 0 {
continue
}
p := v3.PublicEndpoint{
NodeName: nodeName,
Address: address,
Port: port.NodePort,
Protocol: string(port.Protocol),
ServiceName: svcName,
}
eps = append(eps, p)
}
} else {
for _, port := range svc.Spec.Ports {
for _, ingressEp := range svc.Status.LoadBalancer.Ingress {
address := ingressEp.Hostname
if address == "" {
address = ingressEp.IP
}
p := v3.PublicEndpoint{
NodeName: "",
Address: address,
Port: port.Port,
Protocol: string(port.Protocol),
ServiceName: svcName,
}
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
}
for _, c := range pod.Spec.Containers {
for _, p := range c.Ports {
if p.HostPort == 0 {
continue
}
address := p.HostIP
if address == "" {
address = pod.Status.HostIP
}
p := v3.PublicEndpoint{
NodeName: fmt.Sprintf("%s:%s", clusterName, node.Name),
Address: address,
Port: p.HostPort,
Protocol: string(p.Protocol),
PodName: fmt.Sprintf("%s:%s", pod.Namespace, pod.Name),
}
eps = append(eps, p)
}
}
return eps, nil
}
func publicEndpointToString(p v3.PublicEndpoint) string {
return fmt.Sprintf("%s_%s_%v_%s_%s_%s", p.NodeName, p.Address, p.Port, p.Protocol, p.ServiceName, p.PodName)
}
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
}