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Add the ability to watch fields of an rc

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This commit is contained in:
Prashanth Balasubramanian
2015-03-24 19:57:04 -07:00
parent b77b529e16
commit b0068d05f8
6 changed files with 153 additions and 7 deletions
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15
pkg/registry/controller/rest.go
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@@ -26,6 +26,7 @@ import (
"github.com/GoogleCloudPlatform/kubernetes/pkg/registry/generic"
"github.com/GoogleCloudPlatform/kubernetes/pkg/runtime"
"github.com/GoogleCloudPlatform/kubernetes/pkg/util/fielderrors"
"strconv"
)
// rcStrategy implements verification logic for Replication Controllers.
@@ -65,19 +66,25 @@ func (rcStrategy) ValidateUpdate(obj, old runtime.Object) fielderrors.Validation
return validation.ValidateReplicationControllerUpdate(old.(*api.ReplicationController), obj.(*api.ReplicationController))
}
// ControllerToSelectableFields returns a label set that represents the object.
func ControllerToSelectableFields(controller *api.ReplicationController) labels.Set {
return labels.Set{
"name": controller.Name,
"status.replicas": strconv.Itoa(controller.Status.Replicas),
}
}
// MatchController is the filter used by the generic etcd backend to route
// watch events from etcd to clients of the apiserver only interested in specific
// labels/fields.
func MatchController(label labels.Selector, field fields.Selector) generic.Matcher {
return generic.MatcherFunc(
func(obj runtime.Object) (bool, error) {
if !field.Empty() {
return false, fmt.Errorf("field selector not supported yet")
}
controllerObj, ok := obj.(*api.ReplicationController)
if !ok {
return false, fmt.Errorf("Given object is not a replication controller.")
}
return label.Matches(labels.Set(controllerObj.Labels)), nil
fields := ControllerToSelectableFields(controllerObj)
return label.Matches(labels.Set(controllerObj.Labels)) && field.Matches(fields), nil
})
}