/
kmsg_log_config.go
113 lines (95 loc) · 3.13 KB
/
kmsg_log_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 runtime
import (
"context"
"fmt"
"net/url"
"slices"
"github.com/cosi-project/runtime/pkg/controller"
"github.com/cosi-project/runtime/pkg/safe"
"github.com/cosi-project/runtime/pkg/state"
"github.com/siderolabs/gen/optional"
"github.com/siderolabs/gen/xslices"
"github.com/siderolabs/go-procfs/procfs"
"go.uber.org/zap"
"github.com/siderolabs/talos/pkg/machinery/constants"
"github.com/siderolabs/talos/pkg/machinery/resources/config"
"github.com/siderolabs/talos/pkg/machinery/resources/runtime"
)
// KmsgLogConfigController generates configuration for kmsg log delivery.
type KmsgLogConfigController struct {
Cmdline *procfs.Cmdline
}
// Name implements controller.Controller interface.
func (ctrl *KmsgLogConfigController) Name() string {
return "runtime.KmsgLogConfigController"
}
// Inputs implements controller.Controller interface.
func (ctrl *KmsgLogConfigController) Inputs() []controller.Input {
return []controller.Input{
{
Namespace: config.NamespaceName,
Type: config.MachineConfigType,
ID: optional.Some(config.V1Alpha1ID),
Kind: controller.InputWeak,
},
}
}
// Outputs implements controller.Controller interface.
func (ctrl *KmsgLogConfigController) Outputs() []controller.Output {
return []controller.Output{
{
Type: runtime.KmsgLogConfigType,
Kind: controller.OutputExclusive,
},
}
}
// Run implements controller.Controller interface.
//
//nolint:gocyclo
func (ctrl *KmsgLogConfigController) Run(ctx context.Context, r controller.Runtime, logger *zap.Logger) (err error) {
for {
select {
case <-ctx.Done():
return nil
case <-r.EventCh():
}
destinations := []*url.URL{}
if ctrl.Cmdline != nil {
if val := ctrl.Cmdline.Get(constants.KernelParamLoggingKernel).First(); val != nil {
destURL, err := url.Parse(*val)
if err != nil {
return fmt.Errorf("error parsing %q: %w", constants.KernelParamLoggingKernel, err)
}
destinations = append(destinations, destURL)
}
}
cfg, err := safe.ReaderGetByID[*config.MachineConfig](ctx, r, config.V1Alpha1ID)
if err != nil && !state.IsNotFoundError(err) {
return fmt.Errorf("error getting machine config: %w", err)
}
if cfg != nil {
// remove duplicate URLs in case same destination is specified in both machine config and kernel args
destinations = append(destinations, xslices.Filter(cfg.Config().Runtime().KmsgLogURLs(),
func(u *url.URL) bool {
return !slices.ContainsFunc(destinations, func(v *url.URL) bool {
return v.String() == u.String()
})
})...)
}
r.StartTrackingOutputs()
if len(destinations) > 0 {
if err = safe.WriterModify(ctx, r, runtime.NewKmsgLogConfig(), func(cfg *runtime.KmsgLogConfig) error {
cfg.TypedSpec().Destinations = destinations
return nil
}); err != nil {
return fmt.Errorf("error updating kmsg log config: %w", err)
}
}
if err = safe.CleanupOutputs[*runtime.KmsgLogConfig](ctx, r); err != nil {
return err
}
}
}