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config.go
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config.go
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// This Source Code Form is subject to the terms of the Mozilla Public
// License, v. 2.0. If a copy of the MPL was not distributed with this
// file, You can obtain one at http://mozilla.org/MPL/2.0/.
package kubespan
import (
"context"
"fmt"
"github.com/cosi-project/runtime/pkg/controller"
"github.com/cosi-project/runtime/pkg/resource"
"github.com/cosi-project/runtime/pkg/state"
"github.com/siderolabs/go-pointer"
"go.uber.org/zap"
"github.com/talos-systems/talos/pkg/machinery/resources/config"
"github.com/talos-systems/talos/pkg/machinery/resources/kubespan"
)
// ConfigController watches v1alpha1.Config, updates KubeSpan config.
type ConfigController struct{}
// Name implements controller.Controller interface.
func (ctrl *ConfigController) Name() string {
return "kubespan.ConfigController"
}
// Inputs implements controller.Controller interface.
func (ctrl *ConfigController) Inputs() []controller.Input {
return []controller.Input{
{
Namespace: config.NamespaceName,
Type: config.MachineConfigType,
ID: pointer.To(config.V1Alpha1ID),
Kind: controller.InputWeak,
},
}
}
// Outputs implements controller.Controller interface.
func (ctrl *ConfigController) Outputs() []controller.Output {
return []controller.Output{
{
Type: kubespan.ConfigType,
Kind: controller.OutputExclusive,
},
}
}
// Run implements controller.Controller interface.
//
//nolint:gocyclo
func (ctrl *ConfigController) Run(ctx context.Context, r controller.Runtime, logger *zap.Logger) error {
for {
select {
case <-ctx.Done():
return nil
case <-r.EventCh():
cfg, err := r.Get(ctx, resource.NewMetadata(config.NamespaceName, config.MachineConfigType, config.V1Alpha1ID, resource.VersionUndefined))
if err != nil {
if !state.IsNotFoundError(err) {
return fmt.Errorf("error getting config: %w", err)
}
}
touchedIDs := make(map[resource.ID]struct{})
if cfg != nil {
c := cfg.(*config.MachineConfig).Config()
if err = r.Modify(ctx, kubespan.NewConfig(config.NamespaceName, kubespan.ConfigID), func(res resource.Resource) error {
res.(*kubespan.Config).TypedSpec().Enabled = c.Machine().Network().KubeSpan().Enabled()
res.(*kubespan.Config).TypedSpec().ClusterID = c.Cluster().ID()
res.(*kubespan.Config).TypedSpec().SharedSecret = c.Cluster().Secret()
res.(*kubespan.Config).TypedSpec().ForceRouting = c.Machine().Network().KubeSpan().ForceRouting()
res.(*kubespan.Config).TypedSpec().AdvertiseKubernetesNetworks = c.Machine().Network().KubeSpan().AdvertiseKubernetesNetworks()
return nil
}); err != nil {
return err
}
touchedIDs[kubespan.ConfigID] = struct{}{}
}
// list keys for cleanup
list, err := r.List(ctx, resource.NewMetadata(config.NamespaceName, kubespan.ConfigType, "", resource.VersionUndefined))
if err != nil {
return fmt.Errorf("error listing resources: %w", err)
}
for _, res := range list.Items {
if res.Metadata().Owner() != ctrl.Name() {
continue
}
if _, ok := touchedIDs[res.Metadata().ID()]; !ok {
if err = r.Destroy(ctx, res.Metadata()); err != nil {
return fmt.Errorf("error cleaning up specs: %w", err)
}
}
}
}
}
}