66 lines
2.5 KiB
Go
66 lines
2.5 KiB
Go
package defaultinterpreter
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import (
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"fmt"
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"k8s.io/apimachinery/pkg/apis/meta/v1/unstructured"
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"k8s.io/apimachinery/pkg/runtime/schema"
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"k8s.io/klog/v2"
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configv1alpha1 "github.com/karmada-io/karmada/pkg/apis/config/v1alpha1"
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workv1alpha2 "github.com/karmada-io/karmada/pkg/apis/work/v1alpha2"
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)
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// DefaultInterpreter contains all default operation interpreter factory
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// for interpreting common resource.
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type DefaultInterpreter struct {
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replicaHandlers map[schema.GroupVersionKind]replicaInterpreter
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retentionHandlers map[schema.GroupVersionKind]retentionInterpreter
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}
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// NewDefaultInterpreter return a new DefaultInterpreter.
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func NewDefaultInterpreter() *DefaultInterpreter {
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return &DefaultInterpreter{
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replicaHandlers: getAllDefaultReplicaInterpreter(),
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retentionHandlers: getAllDefaultRetentionInterpreter(),
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}
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}
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// HookEnabled tells if any hook exist for specific resource type and operation type.
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func (e *DefaultInterpreter) HookEnabled(kind schema.GroupVersionKind, operationType configv1alpha1.InterpreterOperation) bool {
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switch operationType {
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case configv1alpha1.InterpreterOperationInterpretReplica:
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if _, exist := e.replicaHandlers[kind]; exist {
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return true
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}
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case configv1alpha1.InterpreterOperationRetain:
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if _, exist := e.retentionHandlers[kind]; exist {
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return true
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}
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// TODO(RainbowMango): more cases should be added here
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}
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klog.V(4).Infof("Default interpreter is not enabled for kind %q with operation %q.", kind, operationType)
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return false
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}
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// GetReplicas returns the desired replicas of the object as well as the requirements of each replica.
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func (e *DefaultInterpreter) GetReplicas(object *unstructured.Unstructured) (int32, *workv1alpha2.ReplicaRequirements, error) {
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handler, exist := e.replicaHandlers[object.GroupVersionKind()]
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if !exist {
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return 0, &workv1alpha2.ReplicaRequirements{}, fmt.Errorf("defalut interpreter for operation %s not found", configv1alpha1.InterpreterOperationInterpretReplica)
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}
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return handler(object)
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}
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// Retain returns the objects that based on the "desired" object but with values retained from the "observed" object.
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func (e *DefaultInterpreter) Retain(desired *unstructured.Unstructured, observed *unstructured.Unstructured) (retained *unstructured.Unstructured, err error) {
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handler, exist := e.retentionHandlers[desired.GroupVersionKind()]
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if !exist {
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return nil, fmt.Errorf("default retain interpreter for %q not found", desired.GroupVersionKind())
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}
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return handler(desired, observed)
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}
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