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watch_promotions_v1alpha1.go
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watch_promotions_v1alpha1.go
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package api
import (
"context"
"fmt"
"connectrpc.com/connect"
metav1 "k8s.io/apimachinery/pkg/apis/meta/v1"
"k8s.io/apimachinery/pkg/apis/meta/v1/unstructured"
"k8s.io/apimachinery/pkg/runtime"
"sigs.k8s.io/controller-runtime/pkg/client"
kargoapi "github.com/akuity/kargo/api/v1alpha1"
svcv1alpha1 "github.com/akuity/kargo/pkg/api/service/v1alpha1"
)
func (s *server) WatchPromotions(
ctx context.Context,
req *connect.Request[svcv1alpha1.WatchPromotionsRequest],
stream *connect.ServerStream[svcv1alpha1.WatchPromotionsResponse],
) error {
project := req.Msg.GetProject()
if err := validateFieldNotEmpty("project", project); err != nil {
return err
}
if err := s.validateProjectExists(ctx, project); err != nil {
return err
}
stage := req.Msg.GetStage()
if stage != "" {
if err := s.client.Get(ctx, client.ObjectKey{
Namespace: project,
Name: stage,
}, &kargoapi.Stage{}); err != nil {
return fmt.Errorf("get stage: %w", err)
}
}
w, err := s.client.Watch(ctx, &kargoapi.Promotion{}, project, metav1.ListOptions{})
if err != nil {
return fmt.Errorf("watch promotion: %w", err)
}
defer w.Stop()
for {
select {
case <-ctx.Done():
return ctx.Err()
case e, ok := <-w.ResultChan():
if !ok {
return nil
}
u, ok := e.Object.(*unstructured.Unstructured)
if !ok {
return fmt.Errorf("unexpected object type %T", e.Object)
}
var promotion *kargoapi.Promotion
if err = runtime.DefaultUnstructuredConverter.FromUnstructured(u.Object, &promotion); err != nil {
return fmt.Errorf("from unstructured: %w", err)
}
// FIXME: Current (dynamic) client doesn't support filtering with indexed field by indexer,
// so manually filter stage here.
if stage != "" && stage != promotion.Spec.Stage {
continue
}
if err = stream.Send(&svcv1alpha1.WatchPromotionsResponse{
Promotion: promotion,
Type: string(e.Type),
}); err != nil {
return fmt.Errorf("send response: %w", err)
}
}
}
}