5ff9dc0b3b
This change is prerequisite for implementing iSCSI attacher and detacher. In order to use chap authentication at iSCSI plugin after implementing attacher and detacher, secret is needed at AttachDisk() which is called from WaitForAttach(). To obtain secret, pod information is required, but WaitForAttach() doesn't pass pod information inside. This patch adds 'pod' as an argument of WaitForAttach() and adds changes to drivers who implements WaitForAttach(). Fixes #48953
120 lines
3.6 KiB
Go
120 lines
3.6 KiB
Go
/*
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Copyright 2017 The Kubernetes Authors.
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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 flexvolume
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import (
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"time"
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"github.com/golang/glog"
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"k8s.io/api/core/v1"
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"k8s.io/apimachinery/pkg/types"
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"k8s.io/kubernetes/pkg/volume"
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)
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type flexVolumeAttacher struct {
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plugin *flexVolumeAttachablePlugin
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}
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var _ volume.Attacher = &flexVolumeAttacher{}
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// Attach is part of the volume.Attacher interface
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func (a *flexVolumeAttacher) Attach(spec *volume.Spec, hostName types.NodeName) (string, error) {
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call := a.plugin.NewDriverCall(attachCmd)
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call.AppendSpec(spec, a.plugin.host, nil)
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call.Append(string(hostName))
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status, err := call.Run()
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if isCmdNotSupportedErr(err) {
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return (*attacherDefaults)(a).Attach(spec, hostName)
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} else if err != nil {
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return "", err
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}
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return status.DevicePath, err
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}
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// WaitForAttach is part of the volume.Attacher interface
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func (a *flexVolumeAttacher) WaitForAttach(spec *volume.Spec, devicePath string, _ *v1.Pod, timeout time.Duration) (string, error) {
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call := a.plugin.NewDriverCallWithTimeout(waitForAttachCmd, timeout)
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call.Append(devicePath)
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call.AppendSpec(spec, a.plugin.host, nil)
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status, err := call.Run()
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if isCmdNotSupportedErr(err) {
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return (*attacherDefaults)(a).WaitForAttach(spec, devicePath, timeout)
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} else if err != nil {
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return "", err
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}
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return status.DevicePath, nil
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}
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// GetDeviceMountPath is part of the volume.Attacher interface
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func (a *flexVolumeAttacher) GetDeviceMountPath(spec *volume.Spec) (string, error) {
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return a.plugin.getDeviceMountPath(spec)
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}
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// MountDevice is part of the volume.Attacher interface
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func (a *flexVolumeAttacher) MountDevice(spec *volume.Spec, devicePath string, deviceMountPath string) error {
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// Mount only once.
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alreadyMounted, err := prepareForMount(a.plugin.host.GetMounter(a.plugin.GetPluginName()), deviceMountPath)
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if err != nil {
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return err
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}
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if alreadyMounted {
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return nil
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}
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call := a.plugin.NewDriverCall(mountDeviceCmd)
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call.Append(deviceMountPath)
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call.Append(devicePath)
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call.AppendSpec(spec, a.plugin.host, nil)
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_, err = call.Run()
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if isCmdNotSupportedErr(err) {
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// Devicepath is empty if the plugin does not support attach calls. Ignore mountDevice calls if the
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// plugin does not implement attach interface.
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if devicePath != "" {
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return (*attacherDefaults)(a).MountDevice(spec, devicePath, deviceMountPath, a.plugin.host.GetMounter(a.plugin.GetPluginName()))
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} else {
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return nil
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}
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}
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return err
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}
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func (a *flexVolumeAttacher) VolumesAreAttached(specs []*volume.Spec, nodeName types.NodeName) (map[*volume.Spec]bool, error) {
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volumesAttachedCheck := make(map[*volume.Spec]bool)
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for _, spec := range specs {
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volumesAttachedCheck[spec] = true
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call := a.plugin.NewDriverCall(isAttached)
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call.AppendSpec(spec, a.plugin.host, nil)
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call.Append(string(nodeName))
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status, err := call.Run()
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if isCmdNotSupportedErr(err) {
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return nil, nil
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} else if err == nil {
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if !status.Attached {
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volumesAttachedCheck[spec] = false
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glog.V(2).Infof("VolumesAreAttached: check volume (%q) is no longer attached", spec.Name())
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}
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}
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}
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return volumesAttachedCheck, nil
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}
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