service 和 endpoint

v1.Service{
ObjectMeta: metav1.ObjectMeta{Name: “foo”, Namespace: ns},
Spec: v1.ServiceSpec{
Selector: map[string]string{“foo”: “bar”},
Ports: []v1.ServicePort{
{Name: “port0”, Port: 80, Protocol: “TCP”, TargetPort: intstr.FromInt(8080)},
{Name: “port1”, Port: 88, Protocol: “TCP”, TargetPort: intstr.FromInt(8088)},
},
},
}

从service构建endpoint

1. 先构建多条EndpointSubset，每一条对应： 一个servicePort+ podId +targetPort
2. 再按照EndpointPort 的 port聚合一下 Address信息
3. 再按照Address 信息 聚合一下 EndpointPort

expectedSubsets := []v1.EndpointSubset{{
Addresses: []v1.EndpointAddress{
{IP: “1.2.3.4”, NodeName: &emptyNodeName, TargetRef: &v1.ObjectReference{Kind: “Pod”, Name: “pod0”, Namespace: ns}},
{IP: “1.2.3.5”, NodeName: &emptyNodeName, TargetRef: &v1.ObjectReference{Kind: “Pod”, Name: “pod1”, Namespace: ns}},
{IP: “1.2.3.6”, NodeName: &emptyNodeName, TargetRef: &v1.ObjectReference{Kind: “Pod”, Name: “pod2”, Namespace: ns}},
},
Ports: []v1.EndpointPort{
//这里的Port是targetPort，name对应的是ServicePort的name
{Name: “port0”, Port: 8080, Protocol: “TCP”},
{Name: “port1”, Port: 8088, Protocol: “TCP”},
},
}}