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94 lines
3.0 KiB
Go
94 lines
3.0 KiB
Go
/*
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Copyright 2014 Google Inc. All rights reserved.
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Licensed under the Apache License, Version 2.0 (the "License");
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you may not use this file except in compliance with the License.
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You may obtain a copy of the License at
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http://www.apache.org/licenses/LICENSE-2.0
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Unless required by applicable law or agreed to in writing, software
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distributed under the License is distributed on an "AS IS" BASIS,
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WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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See the License for the specific language governing permissions and
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limitations under the License.
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*/
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package scheduler
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import (
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"fmt"
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"github.com/GoogleCloudPlatform/kubernetes/pkg/api"
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"github.com/GoogleCloudPlatform/kubernetes/pkg/labels"
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)
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// MinionLister interface represents anything that can list minions for a scheduler.
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type MinionLister interface {
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List() (list api.NodeList, err error)
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}
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// FakeMinionLister implements MinionLister on a []string for test purposes.
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type FakeMinionLister api.NodeList
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// List returns minions as a []string.
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func (f FakeMinionLister) List() (api.NodeList, error) {
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return api.NodeList(f), nil
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}
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// PodLister interface represents anything that can list pods for a scheduler.
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type PodLister interface {
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// TODO: make this exactly the same as client's Pods(ns).List() method, by returning a api.PodList
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List(labels.Selector) ([]*api.Pod, error)
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}
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// FakePodLister implements PodLister on an []api.Pods for test purposes.
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type FakePodLister []*api.Pod
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// List returns []*api.Pod matching a query.
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func (f FakePodLister) List(s labels.Selector) (selected []*api.Pod, err error) {
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for _, pod := range f {
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if s.Matches(labels.Set(pod.Labels)) {
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selected = append(selected, pod)
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}
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}
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return selected, nil
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}
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// ServiceLister interface represents anything that can produce a list of services; the list is consumed by a scheduler.
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type ServiceLister interface {
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// Lists all the services
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List() (api.ServiceList, error)
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// Gets the services for the given pod
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GetPodServices(*api.Pod) ([]api.Service, error)
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}
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// FakeServiceLister implements ServiceLister on []api.Service for test purposes.
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type FakeServiceLister []api.Service
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// FakeServiceLister returns api.ServiceList, the list of all services.
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func (f FakeServiceLister) List() (api.ServiceList, error) {
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return api.ServiceList{Items: f}, nil
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}
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// GetPodServices gets the services that have the selector that match the labels on the given pod
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func (f FakeServiceLister) GetPodServices(pod *api.Pod) (services []api.Service, err error) {
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var selector labels.Selector
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for _, service := range f {
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// consider only services that are in the same namespace as the pod
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if service.Namespace != pod.Namespace {
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continue
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}
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selector = labels.Set(service.Spec.Selector).AsSelector()
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if selector.Matches(labels.Set(pod.Labels)) {
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services = append(services, service)
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}
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}
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if len(services) == 0 {
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err = fmt.Errorf("Could not find service for pod %s in namespace %s with labels: %v", pod.Name, pod.Namespace, pod.Labels)
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}
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return
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}
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