mirror of https://github.com/k3s-io/k3s
66 lines
2.0 KiB
Go
66 lines
2.0 KiB
Go
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/*
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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 volumes
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import (
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"errors"
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"github.com/GoogleCloudPlatform/kubernetes/pkg/api"
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)
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// All volume types are expected to implement this interface
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type Interface interface {
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// Prepares and mounts/unpacks the volume to a directory path.
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SetUp()
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// Returns the directory path the volume is mounted to.
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GetPath() string
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// Unmounts the volume and removes traces of the SetUp procedure.
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TearDown()
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}
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// Host Directory Volumes represent a bare host directory mount.
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type HostDirectoryVolume struct {
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Path string
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}
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// Simple host directory mounts require no setup or cleanup, but still
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// need to fulfill the interface definitions.
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func (hostVol *HostDirectoryVolume) SetUp() {}
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func (hostVol *HostDirectoryVolume) TearDown() {}
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func (hostVol *HostDirectoryVolume) GetPath() string {
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return hostVol.Path
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}
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// Interprets API volume as a HostDirectory
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func createHostDirectoryVolume(volume *api.Volume) *HostDirectoryVolume {
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return &HostDirectoryVolume{volume.HostDirectory.Path}
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}
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// Interprets parameters passed in the API as an internal structure
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// with utility procedures for mounting.
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func CreateVolume(volume *api.Volume) (Interface, error) {
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// TODO(jonesdl) We should probably not check every
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// pointer and directly resolve these types instead.
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if volume.HostDirectory != nil {
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return createHostDirectoryVolume(volume), nil
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} else {
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return nil, errors.New("Unsupported volume type.")
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}
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}
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