bd742d5d99
Realized as I was starting to copy some stuff to other repos that we should go ahead and add this.
69 lines
2.5 KiB
Go
69 lines
2.5 KiB
Go
// Copyright © 2017 The virtual-kubelet authors
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//
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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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//
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// http://www.apache.org/licenses/LICENSE-2.0
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//
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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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package manager
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import (
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v1 "k8s.io/api/core/v1"
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"k8s.io/apimachinery/pkg/labels"
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corev1listers "k8s.io/client-go/listers/core/v1"
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"github.com/virtual-kubelet/virtual-kubelet/log"
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)
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// ResourceManager acts as a passthrough to a cache (lister) for pods assigned to the current node.
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// It is also a passthrough to a cache (lister) for Kubernetes secrets and config maps.
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type ResourceManager struct {
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podLister corev1listers.PodLister
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secretLister corev1listers.SecretLister
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configMapLister corev1listers.ConfigMapLister
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serviceLister corev1listers.ServiceLister
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}
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// NewResourceManager returns a ResourceManager with the internal maps initialized.
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func NewResourceManager(podLister corev1listers.PodLister, secretLister corev1listers.SecretLister, configMapLister corev1listers.ConfigMapLister, serviceLister corev1listers.ServiceLister) (*ResourceManager, error) {
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rm := ResourceManager{
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podLister: podLister,
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secretLister: secretLister,
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configMapLister: configMapLister,
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serviceLister: serviceLister,
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}
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return &rm, nil
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}
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// GetPods returns a list of all known pods assigned to this virtual node.
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func (rm *ResourceManager) GetPods() []*v1.Pod {
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l, err := rm.podLister.List(labels.Everything())
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if err == nil {
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return l
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}
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log.L.Errorf("failed to fetch pods from lister: %v", err)
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return make([]*v1.Pod, 0)
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}
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// GetConfigMap retrieves the specified config map from the cache.
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func (rm *ResourceManager) GetConfigMap(name, namespace string) (*v1.ConfigMap, error) {
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return rm.configMapLister.ConfigMaps(namespace).Get(name)
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}
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// GetSecret retrieves the specified secret from Kubernetes.
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func (rm *ResourceManager) GetSecret(name, namespace string) (*v1.Secret, error) {
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return rm.secretLister.Secrets(namespace).Get(name)
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}
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// ListServices retrieves the list of services from Kubernetes.
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func (rm *ResourceManager) ListServices() ([]*v1.Service, error) {
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return rm.serviceLister.List(labels.Everything())
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}
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