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service_builder.go
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service_builder.go
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package logstash
import (
logstashcrd "github.com/webcenter-fr/elasticsearch-operator/apis/logstash/v1"
corev1 "k8s.io/api/core/v1"
metav1 "k8s.io/apimachinery/pkg/apis/meta/v1"
"k8s.io/apimachinery/pkg/util/intstr"
)
// BuilderServices permit to generate service
// It also generate service needed by ingress
// It inject the right selector for Logstash pods
func buildServices(ls *logstashcrd.Logstash) (services []corev1.Service, err error) {
services = make([]corev1.Service, 0, len(ls.Spec.Services))
var service *corev1.Service
computedPort := make([]corev1.ServicePort, 0, len(ls.Spec.Services)+len(ls.Spec.Ingresses)+len(ls.Spec.Deployment.Ports))
var isPortAlreadyUsed bool
computedPort = append(computedPort, corev1.ServicePort{
Name: "http",
Protocol: corev1.ProtocolTCP,
Port: 9600,
TargetPort: intstr.FromString("http"),
})
// Create regular services
for _, s := range ls.Spec.Services {
service = &corev1.Service{
ObjectMeta: metav1.ObjectMeta{
Namespace: ls.Namespace,
Name: GetServiceName(ls, s.Name),
Labels: getLabels(ls, s.Labels),
Annotations: getAnnotations(ls, s.Annotations),
},
Spec: *s.Spec.DeepCopy(),
}
service.Spec.Selector = map[string]string{
logstashcrd.LogstashAnnotationKey: "true",
"cluster": ls.Name,
}
services = append(services, *service)
for _, port := range service.Spec.Ports {
isPortAlreadyUsed = false
for _, portUsed := range computedPort {
if port.Protocol == portUsed.Protocol && (port.Name == portUsed.Name || port.Port == portUsed.Port) {
isPortAlreadyUsed = true
break
}
}
if !isPortAlreadyUsed {
// To not add nodePort
computedPort = append(computedPort, corev1.ServicePort{
Name: port.Name,
Protocol: port.Protocol,
AppProtocol: port.AppProtocol,
Port: port.Port,
TargetPort: port.TargetPort,
})
}
}
}
// Create specific services needed by ingress
for _, i := range ls.Spec.Ingresses {
service = &corev1.Service{
ObjectMeta: metav1.ObjectMeta{
Namespace: ls.Namespace,
Name: GetServiceName(ls, i.Name),
Labels: getLabels(ls),
Annotations: getAnnotations(ls),
},
Spec: corev1.ServiceSpec{
Type: corev1.ServiceTypeClusterIP,
Ports: []corev1.ServicePort{
{
Protocol: i.ContainerPortProtocol,
TargetPort: intstr.FromInt(int(i.ContainerPort)),
Port: int32(i.ContainerPort),
Name: i.Name,
},
},
Selector: map[string]string{
logstashcrd.LogstashAnnotationKey: "true",
"cluster": ls.Name,
},
},
}
services = append(services, *service)
isPortAlreadyUsed = false
for _, portUsed := range computedPort {
if i.ContainerPortProtocol == portUsed.Protocol && (int32(i.ContainerPort) == portUsed.Port || i.Name == portUsed.Name) {
isPortAlreadyUsed = true
break
}
}
if !isPortAlreadyUsed {
computedPort = append(computedPort, corev1.ServicePort{
Protocol: i.ContainerPortProtocol,
TargetPort: intstr.FromInt(int(i.ContainerPort)),
Port: int32(i.ContainerPort),
Name: i.Name,
})
}
}
// Compute global service with custom container ports
for _, port := range ls.Spec.Deployment.Ports {
isPortAlreadyUsed = false
for _, portUsed := range computedPort {
if port.Protocol == portUsed.Protocol && (port.ContainerPort == portUsed.Port || port.Name == portUsed.Name) {
isPortAlreadyUsed = true
break
}
}
if !isPortAlreadyUsed {
computedPort = append(computedPort, corev1.ServicePort{
Protocol: port.Protocol,
TargetPort: intstr.FromInt(int(port.ContainerPort)),
Port: port.ContainerPort,
Name: port.Name,
})
}
}
// Create global service with all ports
service = &corev1.Service{
ObjectMeta: metav1.ObjectMeta{
Namespace: ls.Namespace,
Name: GetGlobalServiceName(ls),
Labels: getLabels(ls),
Annotations: getAnnotations(ls),
},
Spec: corev1.ServiceSpec{
Type: corev1.ServiceTypeClusterIP,
Ports: computedPort,
Selector: map[string]string{
logstashcrd.LogstashAnnotationKey: "true",
"cluster": ls.Name,
},
ClusterIP: "None",
},
}
services = append(services, *service)
return services, nil
}