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Add Watch to /pods.

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This commit is contained in:
Daniel Smith 2014-08-11 12:58:19 -07:00
parent 053e75d8e9
commit e40e5b53a7
4 changed files with 28 additions and 0 deletions
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13
pkg/registry/etcd/etcd.go
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@ -77,6 +77,19 @@ func (r *Registry) ListPods(selector labels.Selector) ([]api.Pod, error) {
return filteredPods, nil
}
// WatchPods begins watching for new, changed, or deleted pods.
func (r *Registry) WatchPods(label, field labels.Selector, resourceVersion uint64) (watch.Interface, error) {
return r.WatchList("/registry/pods", resourceVersion, func(obj interface{}) bool {
pod := obj.(*api.Pod)
fields := labels.Set{
"ID": pod.ID,
"CurrentState.Status": string(pod.CurrentState.Status),
"CurrentState.Host": pod.CurrentState.Host,
}
return label.Matches(labels.Set(pod.Labels)) && field.Matches(fields)
})
}
// GetPod gets a specific pod specified by its ID.
func (r *Registry) GetPod(podID string) (*api.Pod, error) {
var pod api.Pod

3
pkg/registry/pod/registry.go
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@ -19,12 +19,15 @@ package pod
import (
"github.com/GoogleCloudPlatform/kubernetes/pkg/api"
"github.com/GoogleCloudPlatform/kubernetes/pkg/labels"
"github.com/GoogleCloudPlatform/kubernetes/pkg/watch"
)
// Registry is an interface implemented by things that know how to store Pod objects.
type Registry interface {
// ListPods obtains a list of pods that match selector.
ListPods(selector labels.Selector) ([]api.Pod, error)
// Watch for new/changed/deleted pods
WatchPods(label, field labels.Selector, resourceVersion uint64) (watch.Interface, error)
// Get a specific pod
GetPod(podID string) (*api.Pod, error)
// Create a pod based on a specification, schedule it onto a specific machine.

6
pkg/registry/pod/storage.go
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@ -29,6 +29,7 @@ import (
"github.com/GoogleCloudPlatform/kubernetes/pkg/labels"
"github.com/GoogleCloudPlatform/kubernetes/pkg/scheduler"
"github.com/GoogleCloudPlatform/kubernetes/pkg/util"
"github.com/GoogleCloudPlatform/kubernetes/pkg/watch"
"code.google.com/p/go-uuid/uuid"
"github.com/golang/glog"
@ -122,6 +123,11 @@ func (rs *RegistryStorage) List(selector labels.Selector) (interface{}, error) {
return result, err
}
// Watch begins watching for new, changed, or deleted pods.
func (rs *RegistryStorage) Watch(label, field labels.Selector, resourceVersion uint64) (watch.Interface, error) {
return rs.registry.WatchPods(label, field, resourceVersion)
}
func (rs RegistryStorage) New() interface{} {
return &api.Pod{}
}

6
pkg/registry/registrytest/pod.go
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@ -17,10 +17,12 @@ limitations under the License.
package registrytest
import (
"errors"
"sync"
"github.com/GoogleCloudPlatform/kubernetes/pkg/api"
"github.com/GoogleCloudPlatform/kubernetes/pkg/labels"
"github.com/GoogleCloudPlatform/kubernetes/pkg/watch"
)
type PodRegistry struct {
@ -51,6 +53,10 @@ func (r *PodRegistry) ListPods(selector labels.Selector) ([]api.Pod, error) {
return filtered, nil
}
func (r *PodRegistry) WatchPods(label, field labels.Selector, resourceVersion uint64) (watch.Interface, error) {
return nil, errors.New("unimplemented")
}
func (r *PodRegistry) GetPod(podId string) (*api.Pod, error) {
r.Lock()
defer r.Unlock()