elastic ip release fix (#77)

elastic ip release fix

Reviewed-by: Sergei Martynov
Reviewed-by: Artem Lifshits

Author: anton-sidelnikov

driver/compute.go

@@ -10,6 +10,7 @@ import (
 	"github.com/opentelekomcloud/docker-machine-opentelekomcloud/driver/ssh"
 	golangsdk "github.com/opentelekomcloud/gophertelekomcloud"
 	"github.com/opentelekomcloud/gophertelekomcloud/openstack/ecs/v1/cloudservers"
+	"github.com/opentelekomcloud/gophertelekomcloud/openstack/networking/v1/eips"
 )
 
 func (d *Driver) initCompute() error {
@@ -172,6 +173,11 @@ func (d *Driver) deleteInstance() error {
 	if err != nil {
 		return fmt.Errorf("failed to get ECS security groups: %s", err)
 	}
+	elasticIP, err := d.client.GetServerEIP(d.InstanceID)
+	if err != nil {
+		return fmt.Errorf("failed to get ECS elastic ip: %s", err)
+	}
+
 	if err := d.client.DeleteInstance(d.InstanceID); err != nil {
 		return fmt.Errorf("failed to delete instance: %s", logHTTP500(err))
 	}
@@ -191,5 +197,13 @@ func (d *Driver) deleteInstance() error {
 			}
 		}
 	}
+	if d.ElasticIP.DriverManaged && elasticIP != "" {
+		if err := d.client.ReleaseEIP(eips.ListOpts{
+			PublicAddress: elasticIP,
+		}); err != nil {
+			return fmt.Errorf("failed to delete floating IP: %s", logHTTP500(err))
+		}
+		d.ElasticIP.Value = ""
+	}
 	return nil
 }

driver/opentelekomcloud.go

@@ -213,35 +213,35 @@ func (d *Driver) Stop() error {
 
 // Remove the server
 func (d *Driver) Remove() error {
-	var errs error
+	mErr := &multierror.Error{}
 	if err := d.Authenticate(); err != nil {
 		return err
 	}
 	if err := d.deleteInstance(); err != nil {
-		errs = multierror.Append(errs, err)
+		mErr = multierror.Append(mErr, err)
 	}
 	if d.KeyPairName.DriverManaged {
 		if err := d.client.DeleteKeyPair(d.KeyPairName.Value); err != nil {
-			errs = multierror.Append(errs, fmt.Errorf("failed to delete key pair: %s", logHTTP500(err)))
+			mErr = multierror.Append(mErr, fmt.Errorf("failed to delete key pair: %s", logHTTP500(err)))
 		}
 	}
 	if d.ElasticIP.DriverManaged && d.ElasticIP.Value != "" {
 		if err := d.client.ReleaseEIP(eips.ListOpts{
 			PublicAddress: d.ElasticIP.Value,
 		}); err != nil {
-			errs = multierror.Append(errs, fmt.Errorf("failed to delete floating IP: %s", logHTTP500(err)))
+			mErr = multierror.Append(mErr, fmt.Errorf("failed to delete floating IP: %s", logHTTP500(err)))
 		}
 	}
 	if err := d.deleteSubnet(); err != nil {
-		errs = multierror.Append(errs, err)
+		mErr = multierror.Append(mErr, err)
 	}
 	if err := d.deleteSecGroups(); err != nil {
-		errs = multierror.Append(errs, err)
+		mErr = multierror.Append(mErr, err)
 	}
 	if err := d.deleteVPC(); err != nil {
-		errs = multierror.Append(errs, err)
+		mErr = multierror.Append(mErr, err)
 	}
-	return errs
+	return mErr.ErrorOrNil()
 }
 
 // Restart the server

driver/services/compute.go

@@ -481,3 +481,21 @@ func (c *Client) CreateServerGroup(opts *servergroups.CreateOpts) (*servergroups
 func (c *Client) DeleteServerGroup(id string) error {
 	return servergroups.Delete(c.ComputeV2, id).Err
 }
+
+// GetServerEIP - get floating ip by instance ID
+func (c *Client) GetServerEIP(id string) (string, error) {
+	server, err := servers.Get(c.ComputeV2, id).Extract()
+	if err != nil {
+		return "", err
+	}
+	floatingIp := ""
+	for _, ips := range server.Addresses {
+		for _, ip := range ips.([]interface{}) {
+			address := ip.(map[string]interface{})
+			if address["OS-EXT-IPS:type"] == "floating" {
+				floatingIp = address["addr"].(string)
+			}
+		}
+	}
+	return floatingIp, nil
+}