/
eds_conver.go
149 lines (139 loc) · 5.18 KB
/
eds_conver.go
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// RAINBOND, Application Management Platform
// Copyright (C) 2014-2017 Goodrain Co., Ltd.
// This program is free software: you can redistribute it and/or modify
// it under the terms of the GNU General Public License as published by
// the Free Software Foundation, either version 3 of the License, or
// (at your option) any later version. For any non-GPL usage of Rainbond,
// one or multiple Commercial Licenses authorized by Goodrain Co., Ltd.
// must be obtained first.
// This program is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
// GNU General Public License for more details.
// You should have received a copy of the GNU General Public License
// along with this program. If not, see <http://www.gnu.org/licenses/>.
package conver
import (
"fmt"
"strconv"
"github.com/Sirupsen/logrus"
v2 "github.com/envoyproxy/go-control-plane/envoy/api/v2"
endpoint "github.com/envoyproxy/go-control-plane/envoy/api/v2/endpoint"
"github.com/envoyproxy/go-control-plane/pkg/cache"
envoyv2 "github.com/goodrain/rainbond/node/core/envoy/v2"
corev1 "k8s.io/api/core/v1"
)
//OneNodeClusterLoadAssignment one envoy node endpoints
func OneNodeClusterLoadAssignment(serviceAlias, namespace string, endpoints []*corev1.Endpoints, services []*corev1.Service) (clusterLoadAssignment []cache.Resource) {
for i := range services {
if domain, ok := services[i].Annotations["domain"]; ok && domain != "" {
logrus.Warnf("service[sid: %s] endpoint id domain endpoint[domain: %s], use dns cluster type, do not create eds", services[i].GetUID(), domain)
continue
}
service := services[i]
destServiceAlias := GetServiceAliasByService(service)
if destServiceAlias == "" {
logrus.Errorf("service alias is empty in k8s service %s", service.Name)
continue
}
clusterName := fmt.Sprintf("%s_%s_%s_%d", namespace, serviceAlias, destServiceAlias, service.Spec.Ports[0].Port)
selectEndpoint := getEndpointsByServiceName(endpoints, service.Name)
logrus.Debugf("select endpoints %d for service %s", len(selectEndpoint), service.Name)
var lendpoints []*endpoint.LocalityLbEndpoints // localityLbEndpoints just support only one content
for _, en := range selectEndpoint {
var notReadyAddress *corev1.EndpointAddress
var notReadyPort *corev1.EndpointPort
var notreadyToPort int
for _, subset := range en.Subsets {
for i, port := range subset.Ports {
toport := int(port.Port)
if serviceAlias == destServiceAlias {
//use real port
if originPort, ok := service.Labels["origin_port"]; ok {
origin, err := strconv.Atoi(originPort)
if err == nil {
toport = origin
}
}
}
protocol := string(port.Protocol)
if len(subset.Addresses) == 0 && len(subset.NotReadyAddresses) > 0 {
notReadyAddress = &subset.NotReadyAddresses[0]
notreadyToPort = toport
notReadyPort = &subset.Ports[i]
}
getHealty := func() *endpoint.Endpoint_HealthCheckConfig {
return &endpoint.Endpoint_HealthCheckConfig{
PortValue: uint32(toport),
}
}
if len(subset.Addresses) > 0 {
var lbe []*endpoint.LbEndpoint
for _, address := range subset.Addresses {
envoyAddress := envoyv2.CreateSocketAddress(protocol, address.IP, uint32(toport))
lbe = append(lbe, &endpoint.LbEndpoint{
HostIdentifier: &endpoint.LbEndpoint_Endpoint{
Endpoint: &endpoint.Endpoint{
Address: envoyAddress,
HealthCheckConfig: getHealty(),
},
},
})
}
if len(lbe) > 0 {
lendpoints = append(lendpoints, &endpoint.LocalityLbEndpoints{LbEndpoints: lbe})
}
}
}
}
if len(lendpoints) == 0 && notReadyAddress != nil && notReadyPort != nil {
var lbe []*endpoint.LbEndpoint
envoyAddress := envoyv2.CreateSocketAddress(string(notReadyPort.Protocol), notReadyAddress.IP, uint32(notreadyToPort))
lbe = append(lbe, &endpoint.LbEndpoint{
HostIdentifier: &endpoint.LbEndpoint_Endpoint{
Endpoint: &endpoint.Endpoint{
Address: envoyAddress,
},
},
})
lendpoints = append(lendpoints, &endpoint.LocalityLbEndpoints{LbEndpoints: lbe})
}
}
cla := &v2.ClusterLoadAssignment{
ClusterName: clusterName,
Endpoints: lendpoints,
}
if err := cla.Validate(); err != nil {
logrus.Errorf("endpoints discover validate failure %s", err.Error())
} else {
clusterLoadAssignment = append(clusterLoadAssignment, cla)
}
}
if len(clusterLoadAssignment) == 0 {
logrus.Warn("create clusterLoadAssignment zero length")
}
return clusterLoadAssignment
}
func getEndpointsByLables(endpoints []*corev1.Endpoints, slabels map[string]string) (re []*corev1.Endpoints) {
for _, en := range endpoints {
existLength := 0
for k, v := range slabels {
v2, ok := en.Labels[k]
if ok && v == v2 {
existLength++
}
}
if existLength == len(slabels) {
re = append(re, en)
}
}
return
}
func getEndpointsByServiceName(endpoints []*corev1.Endpoints, serviceName string) (re []*corev1.Endpoints) {
for _, en := range endpoints {
if serviceName == en.Name {
re = append(re, en)
}
}
return
}