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Merge pull request #59930 from zetaab/shutdoaw

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Automatic merge from submit-queue (batch tested with PRs 67368, 59930, 68074). If you want to cherry-pick this change to another branch, please follow the instructions here: https://github.com/kubernetes/community/blob/master/contributors/devel/cherry-picks.md.

implement InstanceShutdownByProviderID to aws cloudprovider

**What this PR does / why we need it**: implement InstanceShutdownByProviderID to aws cloudprovider

**Which issue(s) this PR fixes**:
Fixes #59925

**Special notes for your reviewer**:

**Release note**:
```release-note
NONE
```
This commit is contained in:
Kubernetes Submit Queue 2018-08-30 12:40:32 -07:00 committed by GitHub
commit cfdefff3a9
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1 changed files with 31 additions and 8 deletions
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39
pkg/cloudprovider/providers/aws/aws.go
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@ -1336,7 +1336,7 @@ func (c *Cloud) NodeAddressesByProviderID(ctx context.Context, providerID string
return extractNodeAddresses(instance)
}
// InstanceExistsByProviderID returns true if the instance with the given provider id still exists and is running.
// InstanceExistsByProviderID returns true if the instance with the given provider id still exists.
// If false is returned with no error, the instance will be immediately deleted by the cloud controller manager.
func (c *Cloud) InstanceExistsByProviderID(ctx context.Context, providerID string) (bool, error) {
instanceID, err := kubernetesInstanceID(providerID).mapToAWSInstanceID()
@ -1359,18 +1359,41 @@ func (c *Cloud) InstanceExistsByProviderID(ctx context.Context, providerID strin
return false, fmt.Errorf("multiple instances found for instance: %s", instanceID)
}
state := instances[0].State.Name
if *state != "running" {
glog.Warningf("the instance %s is not running", instanceID)
return false, nil
}
return true, nil
}
// InstanceShutdownByProviderID returns true if the instance is in safe state to detach volumes
func (c *Cloud) InstanceShutdownByProviderID(ctx context.Context, providerID string) (bool, error) {
return false, cloudprovider.NotImplemented
instanceID, err := kubernetesInstanceID(providerID).mapToAWSInstanceID()
if err != nil {
return false, err
}
request := &ec2.DescribeInstancesInput{
InstanceIds: []*string{instanceID.awsString()},
}
instances, err := c.ec2.DescribeInstances(request)
if err != nil {
return false, err
}
if len(instances) == 0 {
glog.Warningf("the instance %s does not exist anymore", providerID)
return true, nil
}
if len(instances) > 1 {
return false, fmt.Errorf("multiple instances found for instance: %s", instanceID)
}
instance := instances[0]
if instance.State != nil {
state := aws.StringValue(instance.State.Name)
// valid state for detaching volumes
if state == ec2.InstanceStateNameStopped || state == ec2.InstanceStateNameTerminated {
return true, nil
}
}
return false, nil
}
// InstanceID returns the cloud provider ID of the node with the specified nodeName.