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poolassociation.go
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poolassociation.go
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/*
Copyright 2017 The Kubernetes Authors.
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 openstacktasks
import (
"fmt"
"github.com/gophercloud/gophercloud/openstack/compute/v2/servers"
v2pools "github.com/gophercloud/gophercloud/openstack/loadbalancer/v2/pools"
"k8s.io/klog"
"k8s.io/kops/upup/pkg/fi"
"k8s.io/kops/upup/pkg/fi/cloudup/openstack"
)
//go:generate fitask -type=PoolAssociation
type PoolAssociation struct {
ID *string
Name *string
Lifecycle *fi.Lifecycle
Pool *LBPool
ServerGroup *ServerGroup
InterfaceName *string
ProtocolPort *int
}
// GetDependencies returns the dependencies of the Instance task
func (e *PoolAssociation) GetDependencies(tasks map[string]fi.Task) []fi.Task {
var deps []fi.Task
for _, task := range tasks {
if _, ok := task.(*LB); ok {
deps = append(deps, task)
}
if _, ok := task.(*LBPool); ok {
deps = append(deps, task)
}
if _, ok := task.(*Instance); ok {
deps = append(deps, task)
}
}
return deps
}
var _ fi.CompareWithID = &PoolAssociation{}
func (s *PoolAssociation) CompareWithID() *string {
return s.ID
}
func (p *PoolAssociation) Find(context *fi.Context) (*PoolAssociation, error) {
cloud := context.Cloud.(openstack.OpenstackCloud)
opt := v2pools.ListOpts{
Name: fi.StringValue(p.Pool.Name),
ID: fi.StringValue(p.Pool.ID),
}
rs, err := cloud.ListPools(opt)
if err != nil {
return nil, err
}
if rs == nil {
return nil, nil
} else if len(rs) != 1 {
return nil, fmt.Errorf("found multiple pools with name: %s", fi.StringValue(p.Pool.Name))
}
a := rs[0]
// check is member already created
found := false
for _, member := range a.Members {
poolMember, err := cloud.GetPool(a.ID, member.ID)
if err != nil {
return nil, err
}
if fi.StringValue(p.Name) == poolMember.Name {
found = true
break
}
}
// if not found it is created by returning nil, nil
// this is needed for instance in initial installation
if !found {
return nil, nil
}
pool, err := NewLBPoolTaskFromCloud(cloud, p.Lifecycle, &a, nil)
if err != nil {
return nil, fmt.Errorf("NewLBListenerTaskFromCloud: failed to fetch pool %s: %v", fi.StringValue(pool.Name), err)
}
actual := &PoolAssociation{
ID: p.ID,
Name: p.Name,
Pool: pool,
ServerGroup: p.ServerGroup,
InterfaceName: p.InterfaceName,
ProtocolPort: p.ProtocolPort,
Lifecycle: p.Lifecycle,
}
p.ID = actual.ID
return actual, nil
}
func (s *PoolAssociation) Run(context *fi.Context) error {
return fi.DefaultDeltaRunMethod(s, context)
}
func (_ *PoolAssociation) CheckChanges(a, e, changes *PoolAssociation) error {
if a == nil {
if e.Name == nil {
return fi.RequiredField("Name")
}
} else {
if changes.ID != nil {
return fi.CannotChangeField("ID")
}
if changes.Name != nil {
return fi.CannotChangeField("Name")
}
}
return nil
}
func (_ *PoolAssociation) RenderOpenstack(t *openstack.OpenstackAPITarget, a, e, changes *PoolAssociation) error {
if a == nil {
for _, serverID := range e.ServerGroup.Members {
server, err := servers.Get(t.Cloud.ComputeClient(), serverID).Extract()
if err != nil {
return fmt.Errorf("Failed to find server with id `%s`: %v", serverID, err)
}
memberAddress, err := openstack.GetServerFixedIP(server, fi.StringValue(e.InterfaceName))
if err != nil {
return fmt.Errorf("Failed to get fixed ip for associated pool: %v", err)
}
member, err := t.Cloud.AssociateToPool(server, fi.StringValue(e.Pool.ID), v2pools.CreateMemberOpts{
Name: fi.StringValue(e.Name),
ProtocolPort: fi.IntValue(e.ProtocolPort),
SubnetID: fi.StringValue(e.Pool.Loadbalancer.VipSubnet),
Address: memberAddress,
})
if err != nil {
return fmt.Errorf("Failed to create member: %v", err)
}
e.ID = fi.String(member.ID)
}
return nil
} else {
//TODO: Update Member, this is covered as `a` will always be nil
klog.V(2).Infof("Openstack task PoolAssociation::RenderOpenstack Update not implemented!")
}
klog.V(2).Infof("Openstack task PoolAssociation::RenderOpenstack did nothing")
return nil
}