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grpc_codec.go
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/
grpc_codec.go
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package test
import (
"encoding/json"
"fmt"
cloudevents "github.com/cloudevents/sdk-go/v2"
cloudeventstypes "github.com/cloudevents/sdk-go/v2/types"
"github.com/openshift-online/maestro/pkg/api"
"k8s.io/apimachinery/pkg/api/meta"
"k8s.io/apimachinery/pkg/apis/meta/v1/unstructured"
"k8s.io/apimachinery/pkg/runtime"
workv1 "open-cluster-management.io/api/work/v1"
"open-cluster-management.io/sdk-go/pkg/cloudevents/generic"
"open-cluster-management.io/sdk-go/pkg/cloudevents/generic/types"
"open-cluster-management.io/sdk-go/pkg/cloudevents/work/common"
"open-cluster-management.io/sdk-go/pkg/cloudevents/work/payload"
)
type ResourceCodec struct{}
var _ generic.Codec[*api.Resource] = &ResourceCodec{}
func (c *ResourceCodec) EventDataType() types.CloudEventsDataType {
return payload.ManifestEventDataType
}
// encode the kubernetes resource to a cloudevent format
func (c *ResourceCodec) Encode(source string, eventType types.CloudEventsType, resource *api.Resource) (*cloudevents.Event, error) {
if eventType.CloudEventsDataType != payload.ManifestEventDataType {
return nil, fmt.Errorf("unsupported cloudevents data type %s", eventType.CloudEventsDataType)
}
eventBuilder := types.NewEventBuilder(source, eventType).
WithResourceID(resource.ID).
WithResourceVersion(int64(resource.Version)).
WithClusterName(resource.ConsumerName)
if !resource.GetDeletionTimestamp().IsZero() {
evt := eventBuilder.WithDeletionTimestamp(resource.GetDeletionTimestamp().Time).NewEvent()
return &evt, nil
}
manifest, _, _, err := api.DecodeManifest(resource.Payload)
if err != nil {
return nil, fmt.Errorf("failed to decode manifest: %v", err)
}
evt := eventBuilder.NewEvent()
if err := evt.SetData(cloudevents.ApplicationJSON, &payload.Manifest{Manifest: unstructured.Unstructured{Object: manifest}}); err != nil {
return nil, fmt.Errorf("failed to encode manifests to cloud event: %v", err)
}
return &evt, nil
}
func (c *ResourceCodec) Decode(evt *cloudevents.Event) (*api.Resource, error) {
eventType, err := types.ParseCloudEventsType(evt.Type())
if err != nil {
return nil, fmt.Errorf("failed to parse cloud event type %s, %v", evt.Type(), err)
}
if eventType.CloudEventsDataType != payload.ManifestEventDataType {
return nil, fmt.Errorf("unsupported cloudevents data type %s", eventType.CloudEventsDataType)
}
evtExtensions := evt.Context.GetExtensions()
resourceID, err := cloudeventstypes.ToString(evtExtensions[types.ExtensionResourceID])
if err != nil {
return nil, fmt.Errorf("failed to get resourceid extension: %v", err)
}
resourceVersion, err := cloudeventstypes.ToInteger(evtExtensions[types.ExtensionResourceVersion])
if err != nil {
return nil, fmt.Errorf("failed to get resourceversion extension: %v", err)
}
clusterName, err := cloudeventstypes.ToString(evtExtensions[types.ExtensionClusterName])
if err != nil {
return nil, fmt.Errorf("failed to get clustername extension: %v", err)
}
manifestStatus := &payload.ManifestStatus{}
if err := evt.DataAs(manifestStatus); err != nil {
return nil, fmt.Errorf("failed to unmarshal event data %s, %v", string(evt.Data()), err)
}
resource := &api.Resource{
Meta: api.Meta{
ID: resourceID,
},
Version: resourceVersion,
ConsumerName: clusterName,
}
resourceStatus := &api.ResourceStatus{
ReconcileStatus: &api.ReconcileStatus{
ObservedVersion: resourceVersion,
},
}
if manifestStatus.Status != nil {
resourceStatus.ReconcileStatus.Conditions = manifestStatus.Status.Conditions
if meta.IsStatusConditionTrue(manifestStatus.Conditions, common.ManifestsDeleted) {
deletedCondition := meta.FindStatusCondition(manifestStatus.Conditions, common.ManifestsDeleted)
resourceStatus.ReconcileStatus.Conditions = append(resourceStatus.ReconcileStatus.Conditions, *deletedCondition)
}
for _, value := range manifestStatus.Status.StatusFeedbacks.Values {
if value.Name == "status" {
contentStatus := make(map[string]interface{})
if err := json.Unmarshal([]byte(*value.Value.JsonRaw), &contentStatus); err != nil {
return nil, fmt.Errorf("failed to convert status feedback value to content status: %v", err)
}
resourceStatus.ContentStatus = contentStatus
}
}
}
resourceStatusJSON, err := json.Marshal(resourceStatus)
if err != nil {
return nil, fmt.Errorf("failed to marshal resource status: %v", err)
}
err = json.Unmarshal(resourceStatusJSON, &resource.Status)
if err != nil {
return nil, fmt.Errorf("failed to unmarshal resource status: %v", err)
}
return resource, nil
}
type ResourceBundleCodec struct{}
var _ generic.Codec[*api.Resource] = &ResourceBundleCodec{}
func (c *ResourceBundleCodec) EventDataType() types.CloudEventsDataType {
return payload.ManifestBundleEventDataType
}
// encode the kubernetes resource to a cloudevent format
func (c *ResourceBundleCodec) Encode(source string, eventType types.CloudEventsType, resource *api.Resource) (*cloudevents.Event, error) {
if eventType.CloudEventsDataType != payload.ManifestBundleEventDataType {
return nil, fmt.Errorf("unsupported cloudevents data type %s", eventType.CloudEventsDataType)
}
eventBuilder := types.NewEventBuilder(source, eventType).
WithResourceID(resource.ID).
WithResourceVersion(int64(resource.Version)).
WithClusterName(resource.ConsumerName)
if !resource.GetDeletionTimestamp().IsZero() {
evt := eventBuilder.WithDeletionTimestamp(resource.GetDeletionTimestamp().Time).NewEvent()
return &evt, nil
}
manifest, _, _, err := api.DecodeManifest(resource.Payload)
if err != nil {
return nil, fmt.Errorf("failed to decode manifest: %v", err)
}
evt := eventBuilder.NewEvent()
manifests := &payload.ManifestBundle{
Manifests: []workv1.Manifest{
{
RawExtension: runtime.RawExtension{
Object: &unstructured.Unstructured{Object: manifest},
},
},
},
DeleteOption: &workv1.DeleteOption{
PropagationPolicy: workv1.DeletePropagationPolicyTypeForeground,
},
ManifestConfigs: []workv1.ManifestConfigOption{},
}
if err := evt.SetData(cloudevents.ApplicationJSON, manifests); err != nil {
return nil, fmt.Errorf("failed to encode resource bundle to a cloudevent: %v", err)
}
return &evt, nil
}
func (c *ResourceBundleCodec) Decode(evt *cloudevents.Event) (*api.Resource, error) {
eventType, err := types.ParseCloudEventsType(evt.Type())
if err != nil {
return nil, fmt.Errorf("failed to parse cloud event type %s, %v", evt.Type(), err)
}
if eventType.CloudEventsDataType != payload.ManifestBundleEventDataType {
return nil, fmt.Errorf("unsupported cloudevents data type %s", eventType.CloudEventsDataType)
}
evtExtensions := evt.Context.GetExtensions()
resourceID, err := cloudeventstypes.ToString(evtExtensions[types.ExtensionResourceID])
if err != nil {
return nil, fmt.Errorf("failed to get resourceid extension: %v", err)
}
resourceVersion, err := cloudeventstypes.ToInteger(evtExtensions[types.ExtensionResourceVersion])
if err != nil {
return nil, fmt.Errorf("failed to get resourceversion extension: %v", err)
}
clusterName, err := cloudeventstypes.ToString(evtExtensions[types.ExtensionClusterName])
if err != nil {
return nil, fmt.Errorf("failed to get clustername extension: %v", err)
}
manifestStatus := &payload.ManifestBundleStatus{}
if err := evt.DataAs(manifestStatus); err != nil {
return nil, fmt.Errorf("failed to unmarshal event data %s, %v", string(evt.Data()), err)
}
resource := &api.Resource{
Meta: api.Meta{
ID: resourceID,
},
Version: resourceVersion,
ConsumerName: clusterName,
}
resourceStatus := &api.ResourceStatus{
ReconcileStatus: &api.ReconcileStatus{
ObservedVersion: resourceVersion,
},
}
if len(manifestStatus.ResourceStatus) > 0 {
resourceStatus.ReconcileStatus.Conditions = manifestStatus.ResourceStatus[0].Conditions
if meta.IsStatusConditionTrue(manifestStatus.Conditions, common.ManifestsDeleted) {
deletedCondition := meta.FindStatusCondition(manifestStatus.Conditions, common.ManifestsDeleted)
resourceStatus.ReconcileStatus.Conditions = append(resourceStatus.ReconcileStatus.Conditions, *deletedCondition)
}
}
resourceStatusJSON, err := json.Marshal(resourceStatus)
if err != nil {
return nil, fmt.Errorf("failed to marshal resource status: %v", err)
}
err = json.Unmarshal(resourceStatusJSON, &resource.Status)
if err != nil {
return nil, fmt.Errorf("failed to unmarshal resource status: %v", err)
}
return resource, nil
}