mirror of
https://github.com/k3s-io/k3s.git
synced 2024-06-07 19:41:36 +00:00
120 lines
3.5 KiB
Go
120 lines
3.5 KiB
Go
// +build !providerless
|
|
|
|
/*
|
|
Copyright 2016 The Kubernetes Authors.
|
|
|
|
Licensed under the Apache License, Version 2.0 (the "License");
|
|
you may not use this file except in compliance with the License.
|
|
You may obtain a copy of the License at
|
|
|
|
http://www.apache.org/licenses/LICENSE-2.0
|
|
|
|
Unless required by applicable law or agreed to in writing, software
|
|
distributed under the License is distributed on an "AS IS" BASIS,
|
|
WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
|
|
See the License for the specific language governing permissions and
|
|
limitations under the License.
|
|
*/
|
|
|
|
package aws
|
|
|
|
import (
|
|
"fmt"
|
|
|
|
"github.com/aws/aws-sdk-go/aws"
|
|
"github.com/aws/aws-sdk-go/service/ec2"
|
|
csimigration "k8s.io/csi-translation-lib/plugins"
|
|
"k8s.io/klog/v2"
|
|
|
|
"k8s.io/apimachinery/pkg/types"
|
|
)
|
|
|
|
// EBSVolumeID represents the ID of the volume in the AWS API, e.g.
|
|
// vol-12345678 The "traditional" format is "vol-12345678" A new longer format
|
|
// is also being introduced: "vol-12345678abcdef01" We should not assume
|
|
// anything about the length or format, though it seems reasonable to assume
|
|
// that volumes will continue to start with "vol-".
|
|
type EBSVolumeID string
|
|
|
|
func (i EBSVolumeID) awsString() *string {
|
|
return aws.String(string(i))
|
|
}
|
|
|
|
// KubernetesVolumeID represents the id for a volume in the kubernetes API;
|
|
// a few forms are recognized:
|
|
// * aws://<zone>/<awsVolumeId>
|
|
// * aws:///<awsVolumeId>
|
|
// * <awsVolumeId>
|
|
type KubernetesVolumeID string
|
|
|
|
// DiskInfo returns aws disk information in easy to use manner
|
|
type diskInfo struct {
|
|
ec2Instance *ec2.Instance
|
|
nodeName types.NodeName
|
|
volumeState string
|
|
attachmentState string
|
|
hasAttachment bool
|
|
disk *awsDisk
|
|
}
|
|
|
|
// MapToAWSVolumeID extracts the EBSVolumeID from the KubernetesVolumeID
|
|
func (name KubernetesVolumeID) MapToAWSVolumeID() (EBSVolumeID, error) {
|
|
awsID, err := csimigration.KubernetesVolumeIDToEBSVolumeID(string(name))
|
|
if err != nil {
|
|
return "", err
|
|
}
|
|
return EBSVolumeID(awsID), nil
|
|
}
|
|
|
|
// GetAWSVolumeID converts a Kubernetes volume ID to an AWS volume ID
|
|
func GetAWSVolumeID(kubeVolumeID string) (string, error) {
|
|
kid := KubernetesVolumeID(kubeVolumeID)
|
|
awsID, err := kid.MapToAWSVolumeID()
|
|
return string(awsID), err
|
|
}
|
|
|
|
func (c *Cloud) checkIfAttachedToNode(diskName KubernetesVolumeID, nodeName types.NodeName) (*diskInfo, bool, error) {
|
|
disk, err := newAWSDisk(c, diskName)
|
|
|
|
if err != nil {
|
|
return nil, true, err
|
|
}
|
|
|
|
awsDiskInfo := &diskInfo{
|
|
disk: disk,
|
|
}
|
|
|
|
info, err := disk.describeVolume()
|
|
|
|
if err != nil {
|
|
klog.Warningf("Error describing volume %s with %v", diskName, err)
|
|
awsDiskInfo.volumeState = "unknown"
|
|
return awsDiskInfo, false, err
|
|
}
|
|
|
|
awsDiskInfo.volumeState = aws.StringValue(info.State)
|
|
|
|
if len(info.Attachments) > 0 {
|
|
attachment := info.Attachments[0]
|
|
awsDiskInfo.attachmentState = aws.StringValue(attachment.State)
|
|
instanceID := aws.StringValue(attachment.InstanceId)
|
|
instanceInfo, err := c.getInstanceByID(instanceID)
|
|
|
|
// This should never happen but if it does it could mean there was a race and instance
|
|
// has been deleted
|
|
if err != nil {
|
|
fetchErr := fmt.Errorf("error fetching instance %s for volume %s", instanceID, diskName)
|
|
klog.Warning(fetchErr)
|
|
return awsDiskInfo, false, fetchErr
|
|
}
|
|
|
|
awsDiskInfo.ec2Instance = instanceInfo
|
|
awsDiskInfo.nodeName = mapInstanceToNodeName(instanceInfo)
|
|
awsDiskInfo.hasAttachment = true
|
|
if awsDiskInfo.nodeName == nodeName {
|
|
return awsDiskInfo, true, nil
|
|
}
|
|
}
|
|
return awsDiskInfo, false, nil
|
|
}
|