/
client.go
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/
client.go
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// Copyright (c) 2018 SAP SE or an SAP affiliate company. All rights reserved. This file is licensed under the Apache Software License, v. 2 except as noted otherwise in the LICENSE file
//
// 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 client
import (
"context"
"fmt"
"strings"
extensionscontroller "github.com/gardener/gardener/extensions/pkg/controller"
"github.com/metal-stack/gardener-extension-provider-metal/pkg/metal"
metalgo "github.com/metal-stack/metal-go"
"github.com/metal-stack/metal-go/api/models"
"github.com/metal-stack/metal-lib/pkg/tag"
corev1 "k8s.io/api/core/v1"
"sigs.k8s.io/controller-runtime/pkg/client"
)
// NewClient returns a new metal client with the provider credentials from a given secret reference.
func NewClient(ctx context.Context, k8sClient client.Client, endpoint string, secretRef *corev1.SecretReference) (*metalgo.Driver, error) {
credentials, err := ReadCredentialsFromSecretRef(ctx, k8sClient, secretRef)
if err != nil {
return nil, err
}
return NewClientFromCredentials(endpoint, credentials)
}
// NewClientFromCredentials returns a new metal client with the client constructed from the given credentials.
func NewClientFromCredentials(endpoint string, credentials *metal.Credentials) (*metalgo.Driver, error) {
client, err := metalgo.NewDriver(endpoint, credentials.MetalAPIKey, credentials.MetalAPIHMac)
if err != nil {
return nil, err
}
return client, nil
}
// ReadCredentialsFromSecretRef returns metal credentials from the provider credentials from a given secret reference.
func ReadCredentialsFromSecretRef(ctx context.Context, k8sClient client.Client, secretRef *corev1.SecretReference) (*metal.Credentials, error) {
providerSecret, err := extensionscontroller.GetSecretByReference(ctx, k8sClient, secretRef)
if err != nil {
return nil, err
}
credentials, err := metal.ReadCredentialsSecret(providerSecret)
if err != nil {
return nil, err
}
return credentials, nil
}
// GetPrivateNetworksFromNodeNetwork returns the private network that belongs to the given node network cidr and project.
func GetPrivateNetworksFromNodeNetwork(client *metalgo.Driver, projectID string, nodeNetworkCIDR string) ([]*models.V1NetworkResponse, error) {
if nodeNetworkCIDR == "" {
return nil, fmt.Errorf("node network cidr is empty")
}
networkFindRequest := metalgo.NetworkFindRequest{
ProjectID: &projectID,
Prefixes: []string{nodeNetworkCIDR},
}
networkFindResponse, err := client.NetworkFind(&networkFindRequest)
if err != nil {
return nil, err
}
return networkFindResponse.Networks, nil
}
// GetPrivateNetworkFromNodeNetwork returns the private network that belongs to the given node network cidr and project.
func GetPrivateNetworkFromNodeNetwork(client *metalgo.Driver, projectID string, nodeNetworkCIDR string) (*models.V1NetworkResponse, error) {
privateNetworks, err := GetPrivateNetworksFromNodeNetwork(client, projectID, nodeNetworkCIDR)
if err != nil {
return nil, err
}
if len(privateNetworks) != 1 {
return nil, fmt.Errorf("no distinct private network for project id %q and prefix %s found", projectID, nodeNetworkCIDR)
}
return privateNetworks[0], nil
}
// GetEphemeralIPsFromCluster return all ephemeral IPs for given project and cluster
func GetEphemeralIPsFromCluster(client *metalgo.Driver, projectID, clusterID string) ([]*models.V1IPResponse, []*models.V1IPResponse, error) {
ephemeral := metalgo.IPTypeEphemeral
ipFindRequest := metalgo.IPFindRequest{
ProjectID: &projectID,
Type: &ephemeral,
}
ipFindResponse, err := client.IPFind(&ipFindRequest)
if err != nil {
return nil, nil, err
}
// only these who are member of one cluster are freed
ipsToFree := []*models.V1IPResponse{}
// those who are member of more clusters must be updated and the tags which references this cluster must be removed.
ipsToUpdate := []*models.V1IPResponse{}
for _, ip := range ipFindResponse.IPs {
clusterCount := 0
for _, t := range ip.Tags {
if isMemberOfCluster(t, clusterID) {
clusterCount++
}
}
if clusterCount == 1 {
ipsToFree = append(ipsToFree, ip)
continue
}
// IPs which are used in more than one cluster must be updated to get the tags with this clusterid removed
ipsToUpdate = append(ipsToUpdate, ip)
}
return ipsToFree, ipsToUpdate, nil
}
// UpdateIPInCluster update the IP in the cluster to have only these tags left which are not from this cluster
func UpdateIPInCluster(client *metalgo.Driver, ip *models.V1IPResponse, clusterID string) error {
var newTags []string
for _, t := range ip.Tags {
if strings.HasPrefix(t, tag.ClusterServiceFQN+"="+clusterID) {
continue
}
newTags = append(newTags, t)
}
iur := &metalgo.IPUpdateRequest{
IPAddress: *ip.Ipaddress,
Tags: newTags,
}
_, err := client.IPUpdate(iur)
if err != nil {
return err
}
return nil
}
func isMemberOfCluster(t, clusterID string) bool {
if strings.HasPrefix(t, tag.ClusterID) {
parts := strings.Split(t, "=")
if len(parts) != 2 {
return false
}
if strings.HasPrefix(parts[1], clusterID) {
return true
}
}
return false
}
func FindClusterFirewalls(client *metalgo.Driver, clusterTag, projectID string) ([]*models.V1FirewallResponse, error) {
resp, err := client.FirewallFind(&metalgo.FirewallFindRequest{
MachineFindRequest: metalgo.MachineFindRequest{
AllocationProject: &projectID,
Tags: []string{clusterTag},
},
})
if err != nil {
return nil, err
}
return resp.Firewalls, nil
}