Add generated file

This PR adds generated files under pkg/client and vendor folder.

vendor/k8s.io/kubernetes/pkg/cloudprovider/providers/cloudstack/metadata.go

@@ -0,0 +1,212 @@
+/*
+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 cloudstack
+
+import (
+	"context"
+	"errors"
+	"fmt"
+	"io/ioutil"
+	"net"
+	"net/http"
+
+	"github.com/d2g/dhcp4"
+	"github.com/golang/glog"
+	"k8s.io/api/core/v1"
+	"k8s.io/apimachinery/pkg/types"
+	"k8s.io/kubernetes/pkg/cloudprovider"
+)
+
+type metadata struct {
+	dhcpServer string
+	zone       string
+}
+
+type metadataType string
+
+const (
+	metadataTypeExternalIP   metadataType = "public-ipv4"
+	metadataTypeInternalIP   metadataType = "local-ipv4"
+	metadataTypeInstanceID   metadataType = "instance-id"
+	metadataTypeInstanceType metadataType = "service-offering"
+	metadataTypeZone         metadataType = "availability-zone"
+)
+
+// NodeAddresses returns the addresses of the specified instance.
+func (m *metadata) NodeAddresses(ctx context.Context, name types.NodeName) ([]v1.NodeAddress, error) {
+	externalIP, err := m.get(metadataTypeExternalIP)
+	if err != nil {
+		return nil, fmt.Errorf("could not get external IP: %v", err)
+	}
+
+	internalIP, err := m.get(metadataTypeInternalIP)
+	if err != nil {
+		return nil, fmt.Errorf("could not get internal IP: %v", err)
+	}
+
+	return []v1.NodeAddress{
+		{Type: v1.NodeExternalIP, Address: externalIP},
+		{Type: v1.NodeInternalIP, Address: internalIP},
+	}, nil
+}
+
+// NodeAddressesByProviderID returns the addresses of the specified instance.
+func (m *metadata) NodeAddressesByProviderID(ctx context.Context, providerID string) ([]v1.NodeAddress, error) {
+	return nil, errors.New("NodeAddressesByProviderID not implemented")
+}
+
+// InstanceID returns the cloud provider ID of the specified instance.
+func (m *metadata) InstanceID(ctx context.Context, name types.NodeName) (string, error) {
+	instanceID, err := m.get(metadataTypeInstanceID)
+	if err != nil {
+		return "", fmt.Errorf("could not get instance ID: %v", err)
+	}
+
+	zone, err := m.get(metadataTypeZone)
+	if err != nil {
+		return "", fmt.Errorf("could not get zone: %v", err)
+	}
+
+	return "/" + zone + "/" + instanceID, nil
+}
+
+// InstanceType returns the type of the specified instance.
+func (m *metadata) InstanceType(ctx context.Context, name types.NodeName) (string, error) {
+	instanceType, err := m.get(metadataTypeInstanceType)
+	if err != nil {
+		return "", fmt.Errorf("could not get instance type: %v", err)
+	}
+
+	return instanceType, nil
+}
+
+// InstanceTypeByProviderID returns the type of the specified instance.
+func (m *metadata) InstanceTypeByProviderID(ctx context.Context, providerID string) (string, error) {
+	return "", errors.New("InstanceTypeByProviderID not implemented")
+}
+
+// AddSSHKeyToAllInstances is currently not implemented.
+func (m *metadata) AddSSHKeyToAllInstances(ctx context.Context, user string, keyData []byte) error {
+	return cloudprovider.NotImplemented
+}
+
+// CurrentNodeName returns the name of the node we are currently running on.
+func (m *metadata) CurrentNodeName(ctx context.Context, hostname string) (types.NodeName, error) {
+	return types.NodeName(hostname), nil
+}
+
+// InstanceExistsByProviderID returns if the instance still exists.
+func (m *metadata) InstanceExistsByProviderID(ctx context.Context, providerID string) (bool, error) {
+	return false, errors.New("InstanceExistsByProviderID not implemented")
+}
+
+// InstanceShutdownByProviderID returns if the instance is shutdown.
+func (m *metadata) InstanceShutdownByProviderID(ctx context.Context, providerID string) (bool, error) {
+	return false, cloudprovider.NotImplemented
+}
+
+// GetZone returns the Zone containing the region that the program is running in.
+func (m *metadata) GetZone(ctx context.Context) (cloudprovider.Zone, error) {
+	zone := cloudprovider.Zone{}
+
+	if m.zone == "" {
+		zoneName, err := m.get(metadataTypeZone)
+		if err != nil {
+			return zone, fmt.Errorf("could not get zone: %v", err)
+		}
+
+		m.zone = zoneName
+	}
+
+	glog.V(2).Infof("Current zone is %v", zone)
+	zone.FailureDomain = m.zone
+	zone.Region = m.zone
+
+	return zone, nil
+}
+
+// GetZoneByProviderID returns the Zone, found by using the provider ID.
+func (m *metadata) GetZoneByProviderID(ctx context.Context, providerID string) (cloudprovider.Zone, error) {
+	return cloudprovider.Zone{}, errors.New("GetZoneByProviderID not implemented")
+}
+
+// GetZoneByNodeName returns the Zone, found by using the node name.
+func (m *metadata) GetZoneByNodeName(ctx context.Context, nodeName types.NodeName) (cloudprovider.Zone, error) {
+	return cloudprovider.Zone{}, errors.New("GetZoneByNodeName not implemented")
+}
+
+func (m *metadata) get(mdType metadataType) (string, error) {
+	url := fmt.Sprintf("http://%s/latest/meta-data/%s", m.dhcpServer, mdType)
+
+	resp, err := http.Get(url)
+	if err != nil {
+		return "", fmt.Errorf("error reading metadata: %v", err)
+	}
+	defer resp.Body.Close()
+
+	if resp.StatusCode != http.StatusOK {
+		return "", fmt.Errorf("unexpected HTTP status: %d", resp.StatusCode)
+	}
+
+	data, err := ioutil.ReadAll(resp.Body)
+	if err != nil {
+		return "", fmt.Errorf("error reading response body: %d", resp.StatusCode)
+	}
+
+	return string(data), nil
+}
+
+func findDHCPServer() (string, error) {
+	nics, err := net.Interfaces()
+	if err != nil {
+		return "", fmt.Errorf("could not get interfaces: %v", err)
+	}
+
+	for _, nic := range nics {
+		if nic.Flags&net.FlagUp == 1 && nic.Flags&net.FlagLoopback == 0 && nic.Flags&net.FlagPointToPoint == 0 {
+			addrs, err := nic.Addrs()
+			if err != nil {
+				return "", fmt.Errorf("error reading IP addresses from interface %v: %v", nic.Name, err)
+			}
+
+			if addrs != nil {
+				client, err := newDHCPClient(&nic)
+				if err != nil {
+					return "", fmt.Errorf("error creating new DHCP client: %v", err)
+				}
+
+				discoverPacket, err := client.SendDiscoverPacket()
+				if err != nil {
+					return "", fmt.Errorf("error sending DHCP discover package: %v", err)
+				}
+
+				offerPacket, err := client.GetOffer(&discoverPacket)
+				if err != nil {
+					return "", fmt.Errorf("error receiving DHCP offer package: %v", err)
+				}
+
+				offerPacketOptions := offerPacket.ParseOptions()
+
+				if ipaddr, ok := offerPacketOptions[dhcp4.OptionServerIdentifier]; ok {
+					return net.IP(ipaddr).String(), nil
+				}
+			}
+		}
+	}
+
+	return "", errors.New("no server found")
+}