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Merge pull request #8899 from roberthbailey/ip-from-metadata

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For GCE, compute the external IP by using the local metadata server
This commit is contained in:
Quinton Hoole 2015-05-28 08:29:38 -07:00
commit 9b67435cf3
2 changed files with 8 additions and 15 deletions
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3
pkg/cloudprovider/cloud.go
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@ -81,6 +81,9 @@ type TCPLoadBalancer interface {
// Instances is an abstract, pluggable interface for sets of instances.
type Instances interface {
// NodeAddresses returns the addresses of the specified instance.
// TODO(roberthbailey): This currently is only used in such a way that it
// returns the address of the calling instance. We should do a rename to
// make this clearer.
NodeAddresses(name string) ([]api.NodeAddress, error)
// ExternalID returns the cloud provider ID of the specified instance.
ExternalID(name string) (string, error)

20
pkg/cloudprovider/gce/gce.go
View File

@ -42,6 +42,8 @@ import (
"google.golang.org/cloud/compute/metadata"
)
const EXTERNAL_IP_METADATA_URL = "http://169.254.169.254/computeMetadata/v1/instance/network-interfaces/0/access-configs/0/external-ip"
// GCECloud is an implementation of Interface, TCPLoadBalancer and Instances for Google Compute Engine.
type GCECloud struct {
service *compute.Service
@ -466,10 +468,10 @@ func (gce *GCECloud) getInstanceByName(name string) (*compute.Instance, error) {
}
// NodeAddresses is an implementation of Instances.NodeAddresses.
func (gce *GCECloud) NodeAddresses(instance string) ([]api.NodeAddress, error) {
externalIP, err := gce.getExternalIP(instance)
func (gce *GCECloud) NodeAddresses(_ string) ([]api.NodeAddress, error) {
externalIP, err := gce.metadataAccess(EXTERNAL_IP_METADATA_URL)
if err != nil {
return nil, fmt.Errorf("couldn't get external IP for instance %s: %v", instance, err)
return nil, fmt.Errorf("couldn't get external IP: %v", err)
}
return []api.NodeAddress{
@ -479,18 +481,6 @@ func (gce *GCECloud) NodeAddresses(instance string) ([]api.NodeAddress, error) {
}, nil
}
func (gce *GCECloud) getExternalIP(instance string) (string, error) {
inst, err := gce.getInstanceByName(instance)
if err != nil {
return "", err
}
ip := net.ParseIP(inst.NetworkInterfaces[0].AccessConfigs[0].NatIP)
if ip == nil {
return "", fmt.Errorf("invalid network IP: %s", inst.NetworkInterfaces[0].AccessConfigs[0].NatIP)
}
return ip.String(), nil
}
// ExternalID returns the cloud provider ID of the specified instance.
func (gce *GCECloud) ExternalID(instance string) (string, error) {
inst, err := gce.getInstanceByName(instance)