Implement pod related utilities.

pkg/rescheduler/pod/pods.go

@@ -0,0 +1,37 @@
+/*
+Copyright 2017 The Kubernetes Authors.
+
+Licensed under the Apache License, Version 2.0 (the "License");
+you may not use this file except in compliance with the License.
+You may obtain a copy of the License at
+
+    http://www.apache.org/licenses/LICENSE-2.0
+
+Unless required by applicable law or agreed to in writing, software
+distributed under the License is distributed on an "AS IS" BASIS,
+WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+See the License for the specific language governing permissions and
+limitations under the License.
+*/
+
+package pod
+
+import (
+	"k8s.io/kubernetes/pkg/api/v1"
+	"k8s.io/kubernetes/pkg/client/clientset_generated/clientset"
+)
+
+func ListPodsOnANode(client clientset.Interface, node *v1.Node) ([]*v1.Pod, error) {
+	podList, err := client.CoreV1().Pods(v1.NamespaceAll).List(
+		metav1.ListOptions{FieldSelector: fields.SelectorFromSet(fields.Set{"spec.nodeName": node.Name}).String()})
+	if err != nil {
+		return []*v1.Pod{}, err
+	}
+
+	pods := make([]*v1.Pod, 0)
+	for i := range podList.Items {
+		pods = append(pods, &podList.Items[i])
+	}
+
+	return pods, nil
+}