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kube/{kubeapi,kubeclient},ipn/store/kubestore,cmd/{containerboot,k8s-operator}: emit kube store Events (#14112)

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Adds functionality to kube client to emit Events.
Updates kube store to emit Events when tailscaled state has been loaded, updated or if any errors where
encountered during those operations.
This should help in cases where an error related to state loading/updating caused the Pod to crash in a loop-
unlike logs of the originally failed container instance, Events associated with the Pod will still be
accessible even after N restarts.

Updates tailscale/tailscale#14080

Signed-off-by: Irbe Krumina <irbe@tailscale.com>
This commit is contained in:
Irbe Krumina
2024-11-19 13:07:19 +00:00
committed by GitHub
parent da70a84a4b
commit 00517c8189
13 changed files with 519 additions and 115 deletions
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57
kube/kubeapi/api.go
View File

@@ -7,7 +7,9 @@
// dependency size for those consumers when adding anything new here.
package kubeapi
import "time"
import (
"time"
)
// Note: The API types are copied from k8s.io/api{,machinery} to not introduce a
// module dependency on the Kubernetes API as it pulls in many more dependencies.
@@ -151,6 +153,57 @@ type Secret struct {
Data map[string][]byte `json:"data,omitempty"`
}
// Event contains a subset of fields from corev1.Event.
// https://github.com/kubernetes/api/blob/6cc44b8953ae704d6d9ec2adf32e7ae19199ea9f/core/v1/types.go#L7034
// It is copied here to avoid having to import kube libraries.
type Event struct {
TypeMeta `json:",inline"`
ObjectMeta `json:"metadata"`
Message string `json:"message,omitempty"`
Reason string `json:"reason,omitempty"`
Source EventSource `json:"source,omitempty"` // who is emitting this Event
Type string `json:"type,omitempty"` // Normal or Warning
// InvolvedObject is the subject of the Event. `kubectl describe` will, for most object types, display any
// currently present cluster Events matching the object (but you probably want to set UID for this to work).
InvolvedObject ObjectReference `json:"involvedObject"`
Count int32 `json:"count,omitempty"` // how many times Event was observed
FirstTimestamp time.Time `json:"firstTimestamp,omitempty"`
LastTimestamp time.Time `json:"lastTimestamp,omitempty"`
}
// EventSource includes a subset of fields from corev1.EventSource.
// https://github.com/kubernetes/api/blob/6cc44b8953ae704d6d9ec2adf32e7ae19199ea9f/core/v1/types.go#L7007
// It is copied here to avoid having to import kube libraries.
type EventSource struct {
// Component is the name of the component that is emitting the Event.
Component string `json:"component,omitempty"`
}
// ObjectReference contains a subset of fields from corev1.ObjectReference.
// https://github.com/kubernetes/api/blob/6cc44b8953ae704d6d9ec2adf32e7ae19199ea9f/core/v1/types.go#L6902
// It is copied here to avoid having to import kube libraries.
type ObjectReference struct {
// Kind of the referent.
// More info: https://git.k8s.io/community/contributors/devel/sig-architecture/api-conventions.md#types-kinds
// +optional
Kind string `json:"kind,omitempty"`
// Namespace of the referent.
// More info: https://kubernetes.io/docs/concepts/overview/working-with-objects/namespaces/
// +optional
Namespace string `json:"namespace,omitempty"`
// Name of the referent.
// More info: https://kubernetes.io/docs/concepts/overview/working-with-objects/names/#names
// +optional
Name string `json:"name,omitempty"`
// UID of the referent.
// More info: https://kubernetes.io/docs/concepts/overview/working-with-objects/names/#uids
// +optional
UID string `json:"uid,omitempty"`
// API version of the referent.
// +optional
APIVersion string `json:"apiVersion,omitempty"`
}
// Status is a return value for calls that don't return other objects.
type Status struct {
TypeMeta `json:",inline"`
@@ -186,6 +239,6 @@ type Status struct {
Code int `json:"code,omitempty"`
}
func (s *Status) Error() string {
func (s Status) Error() string {
return s.Message
}