mirror of
https://github.com/k3s-io/kubernetes.git
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101 lines
2.7 KiB
Go
101 lines
2.7 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 host_path
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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/types"
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"github.com/GoogleCloudPlatform/kubernetes/pkg/volume"
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)
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// This is the primary entrypoint for volume plugins.
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func ProbeVolumePlugins() []volume.VolumePlugin {
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return []volume.VolumePlugin{&hostPathPlugin{nil}}
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}
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type hostPathPlugin struct {
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host volume.VolumeHost
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}
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var _ volume.VolumePlugin = &hostPathPlugin{}
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const (
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hostPathPluginName = "kubernetes.io/host-path"
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)
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func (plugin *hostPathPlugin) Init(host volume.VolumeHost) {
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plugin.host = host
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}
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func (plugin *hostPathPlugin) Name() string {
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return hostPathPluginName
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}
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func (plugin *hostPathPlugin) CanSupport(spec *volume.Spec) bool {
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return spec.VolumeSource.HostPath != nil || spec.PersistentVolumeSource.HostPath != nil
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}
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func (plugin *hostPathPlugin) GetAccessModes() []api.AccessModeType {
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return []api.AccessModeType{
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api.ReadWriteOnce,
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}
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}
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func (plugin *hostPathPlugin) NewBuilder(spec *volume.Spec, podRef *api.ObjectReference, _ volume.VolumeOptions) (volume.Builder, error) {
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if spec.VolumeSource.HostPath != nil {
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return &hostPath{spec.VolumeSource.HostPath.Path}, nil
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} else {
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return &hostPath{spec.PersistentVolumeSource.HostPath.Path}, nil
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}
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}
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func (plugin *hostPathPlugin) NewCleaner(volName string, podUID types.UID) (volume.Cleaner, error) {
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return &hostPath{""}, nil
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}
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// HostPath volumes represent a bare host file or directory mount.
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// The direct at the specified path will be directly exposed to the container.
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type hostPath struct {
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path string
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}
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// SetUp does nothing.
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func (hp *hostPath) SetUp() error {
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return nil
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}
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// SetUpAt does not make sense for host paths - probably programmer error.
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func (hp *hostPath) SetUpAt(dir string) error {
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return fmt.Errorf("SetUpAt() does not make sense for host paths")
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}
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func (hp *hostPath) GetPath() string {
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return hp.path
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}
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// TearDown does nothing.
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func (hp *hostPath) TearDown() error {
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return nil
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}
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// TearDownAt does not make sense for host paths - probably programmer error.
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func (hp *hostPath) TearDownAt(dir string) error {
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return fmt.Errorf("TearDownAt() does not make sense for host paths")
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}
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