From cf154e9d1f2327dc93878c2e881a55d0bc8f1bf9 Mon Sep 17 00:00:00 2001
From: louisgong <gongguanjun@hotmail.com>
Date: Wed, 13 May 2020 11:45:07 +0800
Subject: [PATCH] implement openstack InstanceMetadataByProviderID function

---
 .../openstack/openstack_instances.go          | 28 ++++++++++++++++++-
 1 file changed, 27 insertions(+), 1 deletion(-)

diff --git a/staging/src/k8s.io/legacy-cloud-providers/openstack/openstack_instances.go b/staging/src/k8s.io/legacy-cloud-providers/openstack/openstack_instances.go
index c354e9f1657..8c10e50fe45 100644
--- a/staging/src/k8s.io/legacy-cloud-providers/openstack/openstack_instances.go
+++ b/staging/src/k8s.io/legacy-cloud-providers/openstack/openstack_instances.go
@@ -154,7 +154,33 @@ func (i *Instances) InstanceShutdownByProviderID(ctx context.Context, providerID
 
 // InstanceMetadataByProviderID returns metadata of the specified instance.
 func (i *Instances) InstanceMetadataByProviderID(ctx context.Context, providerID string) (*cloudprovider.InstanceMetadata, error) {
-	return nil, fmt.Errorf("unimplemented")
+	if providerID == "" {
+		return nil, fmt.Errorf("couldn't compute InstanceMetadata for empty providerID")
+	}
+
+	instanceID, err := instanceIDFromProviderID(providerID)
+	if err != nil {
+		return nil, err
+	}
+	srv, err := servers.Get(i.compute, instanceID).Extract()
+	if err != nil {
+		return nil, err
+	}
+
+	instanceType, err := srvInstanceType(srv)
+	if err != nil {
+		return nil, err
+	}
+	addresses, err := nodeAddresses(srv)
+	if err != nil {
+		return nil, err
+	}
+
+	return &cloudprovider.InstanceMetadata{
+		ProviderID:    providerID,
+		Type:          instanceType,
+		NodeAddresses: addresses,
+	}, nil
 }
 
 // InstanceID returns the kubelet's cloud provider ID.