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Pass pod information in CSI NodePublish attributes.

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This commit is contained in:
Jan Safranek 2018-08-28 13:58:24 +02:00 committed by Hemant Kumar
parent dc6be0cbf1
commit a30fc9ca48
1 changed files with 52 additions and 0 deletions
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52
pkg/volume/csi/csi_mounter.go
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@ -18,6 +18,7 @@ package csi
import (
"context"
"errors"
"fmt"
"os"
"path"
@ -25,8 +26,11 @@ import (
"github.com/golang/glog"
api "k8s.io/api/core/v1"
apierrs "k8s.io/apimachinery/pkg/api/errors"
"k8s.io/apimachinery/pkg/types"
utilfeature "k8s.io/apiserver/pkg/util/feature"
"k8s.io/client-go/kubernetes"
"k8s.io/kubernetes/pkg/features"
kstrings "k8s.io/kubernetes/pkg/util/strings"
"k8s.io/kubernetes/pkg/volume"
"k8s.io/kubernetes/pkg/volume/util"
@ -162,6 +166,22 @@ func (c *csiMountMgr) SetUpAt(dir string, fsGroup *int64) error {
accessMode = c.spec.PersistentVolume.Spec.AccessModes[0]
}
// Inject pod information into volume_attributes
podAttrs, err := c.podAttributes()
if err != nil {
glog.Error(log("mouter.SetUpAt failed to assemble volume attributes: %v", err))
return err
}
if podAttrs != nil {
if attribs == nil {
attribs = podAttrs
} else {
for k, v := range podAttrs {
attribs[k] = v
}
}
}
fsType := csiSource.FSType
err = csi.NodePublishVolume(
ctx,
@ -216,6 +236,38 @@ func (c *csiMountMgr) SetUpAt(dir string, fsGroup *int64) error {
return nil
}
func (c *csiMountMgr) podAttributes() (map[string]string, error) {
if !utilfeature.DefaultFeatureGate.Enabled(features.CSIPodInfo) {
return nil, nil
}
if c.plugin.csiDriverLister == nil {
return nil, errors.New("CSIDriver lister does not exist")
}
csiDriver, err := c.plugin.csiDriverLister.Get(c.driverName)
if err != nil {
if apierrs.IsNotFound(err) {
glog.V(4).Infof(log("CSIDriver %q not found, not adding pod information", c.driverName))
return nil, nil
}
return nil, err
}
if csiDriver.Spec.PodInfoRequiredOnMount == nil || *csiDriver.Spec.PodInfoRequiredOnMount == false {
glog.V(4).Infof(log("CSIDriver %q does not require pod information", c.driverName))
return nil, nil
}
attrs := map[string]string{
"csi.storage.k8s.io/pod.name": c.pod.Name,
"csi.storage.k8s.io/pod.namespace": c.pod.Namespace,
"csi.storage.k8s.io/pod.uid": string(c.pod.UID),
"csi.storage.k8s.io/serviceAccount.name": c.pod.Spec.ServiceAccountName,
}
glog.V(4).Infof(log("CSIDriver %q requires pod information", c.driverName))
return attrs, nil
}
func (c *csiMountMgr) GetAttributes() volume.Attributes {
mounter := c.plugin.host.GetMounter(c.plugin.GetPluginName())
path := c.GetPath()