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loadbalancer_backend.go
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/
loadbalancer_backend.go
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// Copyright 2019 Yunion
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
package google
import (
"context"
"fmt"
"strconv"
"strings"
"time"
"github.com/nyl1001/pkg/errors"
api "github.com/nyl1001/cloudmux/pkg/apis/compute"
"github.com/nyl1001/cloudmux/pkg/cloudprovider"
)
type SLoadbalancerBackend struct {
lbbg *SLoadBalancerBackendGroup
backendService SBackendServices //
instanceGroup SInstanceGroup // 实例组
Backend SInstanceGroupInstance // backend
Port int `json:"port"`
}
func (self *SLoadbalancerBackend) GetId() string {
return fmt.Sprintf("%s::%s::%s::%d", self.lbbg.GetGlobalId(), self.instanceGroup.GetGlobalId(), self.GetBackendId(), self.Port)
}
func (self *SLoadbalancerBackend) GetName() string {
segs := strings.Split(self.Backend.Instance, "/")
name := ""
if len(segs) > 0 {
name = segs[len(segs)-1]
}
return fmt.Sprintf("%s::%s::%d", self.instanceGroup.GetName(), name, self.Port)
}
func (self *SLoadbalancerBackend) GetGlobalId() string {
return self.GetId()
}
func (self *SLoadbalancerBackend) GetDescription() string {
return ""
}
func (self *SLoadbalancerBackend) GetStatus() string {
return api.LB_STATUS_ENABLED
}
func (self *SLoadbalancerBackend) Refresh() error {
return nil
}
func (self *SLoadbalancerBackend) IsEmulated() bool {
return true
}
func (self *SLoadbalancerBackend) GetSysTags() map[string]string {
return nil
}
func (self *SLoadbalancerBackend) GetTags() (map[string]string, error) {
return nil, nil
}
func (self *SLoadbalancerBackend) SetTags(tags map[string]string, replace bool) error {
return cloudprovider.ErrNotSupported
}
func (self *SLoadbalancerBackend) GetProjectId() string {
return self.lbbg.GetProjectId()
}
func (self *SLoadbalancerBackend) GetWeight() int {
return 0
}
func (self *SLoadbalancerBackend) GetPort() int {
return self.Port
}
func (self *SLoadbalancerBackend) GetCreatedAt() time.Time {
return time.Time{}
}
func (self *SLoadbalancerBackend) GetBackendType() string {
return api.LB_BACKEND_GUEST
}
func (self *SLoadbalancerBackend) GetBackendRole() string {
return api.LB_BACKEND_ROLE_DEFAULT
}
func (self *SLoadbalancerBackend) GetBackendId() string {
r := SResourceBase{
Name: "",
SelfLink: self.Backend.Instance,
}
return r.GetGlobalId()
}
func (self *SLoadbalancerBackend) GetIpAddress() string {
return ""
}
func (self *SLoadbalancerBackend) SyncConf(ctx context.Context, port, weight int) error {
return cloudprovider.ErrNotSupported
}
func (self *SLoadBalancerBackendGroup) GetLoadbalancerBackends() ([]SLoadbalancerBackend, error) {
if self.backends != nil {
return self.backends, nil
}
_igs, err := self.lb.GetInstanceGroupsMap()
if err != nil {
return nil, errors.Wrap(err, "GetInstanceGroupsMap")
}
igs := make([]SInstanceGroup, 0)
for i := range self.backendService.Backends {
backend := self.backendService.Backends[i]
if v, ok := _igs[backend.Group]; ok {
igs = append(igs, v)
}
}
ret := make([]SLoadbalancerBackend, 0)
for i := range igs {
ig := igs[i]
// http lb
if self.lb.isHttpLb {
for j := range ig.NamedPorts {
np := ig.NamedPorts[j]
if np.Name != self.backendService.PortName {
continue
}
bs, err := ig.GetInstances()
if err != nil {
return nil, errors.Wrap(err, "GetInstances")
}
for n := range bs {
backend := SLoadbalancerBackend{
lbbg: self,
backendService: self.backendService,
instanceGroup: ig,
Backend: bs[n],
Port: int(np.Port),
}
ret = append(ret, backend)
}
}
} else {
// tcp & udp lb
bs, err := ig.GetInstances()
if err != nil {
return nil, errors.Wrap(err, "GetInstances")
}
frs, err := self.lb.GetForwardingRules()
if err != nil {
return nil, errors.Wrap(err, "GetForwardingRules")
}
for m := range frs {
fr := frs[m]
for p := range fr.Ports {
port, _ := strconv.Atoi(fr.Ports[p])
if port <= 0 {
continue
}
for n := range bs {
backend := SLoadbalancerBackend{
lbbg: self,
backendService: self.backendService,
instanceGroup: ig,
Backend: bs[n],
Port: port,
}
ret = append(ret, backend)
}
}
}
}
}
self.backends = ret
return ret, nil
}