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state.go
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state.go
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// Code generated by injection-gen. DO NOT EDIT.
package function
import (
fmt "fmt"
v1alpha1 "github.com/zeiss/typhoon/pkg/apis/extensions/v1alpha1"
types "k8s.io/apimachinery/pkg/types"
cache "k8s.io/client-go/tools/cache"
reconciler "knative.dev/pkg/reconciler"
)
// state is used to track the state of a reconciler in a single run.
type state struct {
// key is the original reconciliation key from the queue.
key string
// namespace is the namespace split from the reconciliation key.
namespace string
// name is the name split from the reconciliation key.
name string
// reconciler is the reconciler.
reconciler Interface
// roi is the read only interface cast of the reconciler.
roi ReadOnlyInterface
// isROI (Read Only Interface) the reconciler only observes reconciliation.
isROI bool
// isLeader the instance of the reconciler is the elected leader.
isLeader bool
}
func newState(key string, r *reconcilerImpl) (*state, error) {
// Convert the namespace/name string into a distinct namespace and name.
namespace, name, err := cache.SplitMetaNamespaceKey(key)
if err != nil {
return nil, fmt.Errorf("invalid resource key: %s", key)
}
roi, isROI := r.reconciler.(ReadOnlyInterface)
isLeader := r.IsLeaderFor(types.NamespacedName{
Namespace: namespace,
Name: name,
})
return &state{
key: key,
namespace: namespace,
name: name,
reconciler: r.reconciler,
roi: roi,
isROI: isROI,
isLeader: isLeader,
}, nil
}
// isNotLeaderNorObserver checks to see if this reconciler with the current
// state is enabled to do any work or not.
// isNotLeaderNorObserver returns true when there is no work possible for the
// reconciler.
func (s *state) isNotLeaderNorObserver() bool {
if !s.isLeader && !s.isROI {
// If we are not the leader, and we don't implement the ReadOnly
// interface, then take a fast-path out.
return true
}
return false
}
func (s *state) reconcileMethodFor(o *v1alpha1.Function) (string, doReconcile) {
if o.GetDeletionTimestamp().IsZero() {
if s.isLeader {
return reconciler.DoReconcileKind, s.reconciler.ReconcileKind
} else if s.isROI {
return reconciler.DoObserveKind, s.roi.ObserveKind
}
} else if fin, ok := s.reconciler.(Finalizer); s.isLeader && ok {
return reconciler.DoFinalizeKind, fin.FinalizeKind
}
return "unknown", nil
}