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azure.go
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azure.go
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/*
Copyright 2020 The Kubermatic Kubernetes Platform contributors.
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 provider
import (
"context"
"fmt"
"net/http"
"github.com/Azure/azure-sdk-for-go/services/compute/mgmt/2018-06-01/compute"
"github.com/Azure/go-autorest/autorest/azure/auth"
"github.com/go-kit/kit/endpoint"
apiv1 "github.com/kubermatic/kubermatic/api/pkg/api/v1"
"github.com/kubermatic/kubermatic/api/pkg/handler/middleware"
"github.com/kubermatic/kubermatic/api/pkg/handler/v1/cluster"
"github.com/kubermatic/kubermatic/api/pkg/handler/v1/common"
"github.com/kubermatic/kubermatic/api/pkg/handler/v1/dc"
"github.com/kubermatic/kubermatic/api/pkg/provider"
"github.com/kubermatic/kubermatic/api/pkg/provider/cloud/azure"
kubernetesprovider "github.com/kubermatic/kubermatic/api/pkg/provider/kubernetes"
"github.com/kubermatic/kubermatic/api/pkg/util/errors"
)
var NewAzureClientSet = func(subscriptionID, clientID, clientSecret, tenantID string) (AzureClientSet, error) {
var err error
sizesClient := compute.NewVirtualMachineSizesClient(subscriptionID)
sizesClient.Authorizer, err = auth.NewClientCredentialsConfig(clientID, clientSecret, tenantID).Authorizer()
if err != nil {
return nil, err
}
skusClient := compute.NewResourceSkusClient(subscriptionID)
skusClient.Authorizer, err = auth.NewClientCredentialsConfig(clientID, clientSecret, tenantID).Authorizer()
if err != nil {
return nil, err
}
return &azureClientSetImpl{
vmSizeClient: sizesClient,
skusClient: skusClient,
}, nil
}
type azureClientSetImpl struct {
vmSizeClient compute.VirtualMachineSizesClient
skusClient compute.ResourceSkusClient
}
type AzureClientSet interface {
ListVMSize(ctx context.Context, location string) ([]compute.VirtualMachineSize, error)
ListSKU(ctx context.Context, location string) ([]compute.ResourceSku, error)
}
func (s *azureClientSetImpl) ListSKU(ctx context.Context, location string) ([]compute.ResourceSku, error) {
skuList, err := s.skusClient.List(ctx)
if err != nil {
return nil, fmt.Errorf("failed to list SKU resource: %v", err)
}
return skuList.Values(), nil
}
func (s *azureClientSetImpl) ListVMSize(ctx context.Context, location string) ([]compute.VirtualMachineSize, error) {
sizesResult, err := s.vmSizeClient.List(ctx, location)
if err != nil {
return nil, fmt.Errorf("failed to list sizes: %v", err)
}
return *sizesResult.Value, nil
}
func isVirtualMachinesType(sku compute.ResourceSku) bool {
resourceType := sku.ResourceType
if resourceType != nil {
if *resourceType == "virtualMachines" {
return true
}
}
return false
}
func isLocation(sku compute.ResourceSku, location string) bool {
if sku.Locations != nil {
for _, l := range *sku.Locations {
if l == location {
return true
}
}
}
return false
}
// isValidVM checks all constrains for VM
func isValidVM(sku compute.ResourceSku, location string) bool {
if !isLocation(sku, location) {
return false
}
if !isVirtualMachinesType(sku) {
return false
}
// check restricted locations
restrictions := sku.Restrictions
if restrictions != nil {
for _, r := range *restrictions {
restrictionInfo := r.RestrictionInfo
if restrictionInfo != nil {
if restrictionInfo.Locations != nil {
for _, l := range *restrictionInfo.Locations {
if l == location {
return false
}
}
}
}
}
}
return true
}
func AzureSizeWithClusterCredentialsEndpoint(projectProvider provider.ProjectProvider, privilegedProjectProvider provider.PrivilegedProjectProvider, seedsGetter provider.SeedsGetter, userInfoGetter provider.UserInfoGetter) endpoint.Endpoint {
return func(ctx context.Context, request interface{}) (interface{}, error) {
req := request.(AzureSizeNoCredentialsReq)
clusterProvider := ctx.Value(middleware.ClusterProviderContextKey).(provider.ClusterProvider)
cluster, err := cluster.GetCluster(ctx, projectProvider, privilegedProjectProvider, userInfoGetter, req.ProjectID, req.ClusterID, &provider.ClusterGetOptions{CheckInitStatus: true})
if err != nil {
return nil, err
}
if cluster.Spec.Cloud.Azure == nil {
return nil, errors.NewNotFound("cloud spec for ", req.ClusterID)
}
userInfo, err := userInfoGetter(ctx, "")
if err != nil {
return nil, common.KubernetesErrorToHTTPError(err)
}
dc, err := dc.GetDatacenter(userInfo, seedsGetter, cluster.Spec.Cloud.DatacenterName)
if err != nil {
return nil, errors.New(http.StatusInternalServerError, err.Error())
}
if dc.Spec.Azure == nil {
return nil, errors.NewNotFound("cloud spec (dc) for ", req.ClusterID)
}
azureLocation := dc.Spec.Azure.Location
assertedClusterProvider, ok := clusterProvider.(*kubernetesprovider.ClusterProvider)
if !ok {
return nil, errors.New(http.StatusInternalServerError, "failed to assert clusterProvider")
}
secretKeySelector := provider.SecretKeySelectorValueFuncFactory(ctx, assertedClusterProvider.GetSeedClusterAdminRuntimeClient())
creds, err := azure.GetCredentialsForCluster(cluster.Spec.Cloud, secretKeySelector)
if err != nil {
return nil, err
}
return azureSize(ctx, creds.SubscriptionID, creds.ClientID, creds.ClientSecret, creds.TenantID, azureLocation)
}
}
func AzureSizeEndpoint(presetsProvider provider.PresetProvider, userInfoGetter provider.UserInfoGetter) endpoint.Endpoint {
return func(ctx context.Context, request interface{}) (interface{}, error) {
req := request.(AzureSizeReq)
subscriptionID := req.SubscriptionID
clientID := req.ClientID
clientSecret := req.ClientSecret
tenantID := req.TenantID
userInfo, err := userInfoGetter(ctx, "")
if err != nil {
return nil, common.KubernetesErrorToHTTPError(err)
}
if len(req.Credential) > 0 {
preset, err := presetsProvider.GetPreset(userInfo, req.Credential)
if err != nil {
return nil, errors.New(http.StatusInternalServerError, fmt.Sprintf("can not get preset %s for user %s", req.Credential, userInfo.Email))
}
if credentials := preset.Spec.Azure; credentials != nil {
subscriptionID = credentials.SubscriptionID
clientID = credentials.ClientID
clientSecret = credentials.ClientSecret
tenantID = credentials.TenantID
}
}
return azureSize(ctx, subscriptionID, clientID, clientSecret, tenantID, req.Location)
}
}
func azureSize(ctx context.Context, subscriptionID, clientID, clientSecret, tenantID, location string) (apiv1.AzureSizeList, error) {
sizesClient, err := NewAzureClientSet(subscriptionID, clientID, clientSecret, tenantID)
if err != nil {
return nil, fmt.Errorf("failed to create authorizer for size client: %v", err)
}
skuList, err := sizesClient.ListSKU(ctx, location)
if err != nil {
return nil, fmt.Errorf("failed to list SKU resource: %v", err)
}
// prepare set of valid VM size types from SKU resources
validSKUSet := make(map[string]struct{}, len(skuList))
for _, v := range skuList {
if isValidVM(v, location) {
validSKUSet[*v.Name] = struct{}{}
}
}
// prepare set of valid VM size types for container purpose
validVMSizeList := compute.PossibleContainerServiceVMSizeTypesValues()
validVMContainerSet := make(map[string]struct{}, len(validVMSizeList))
for _, s := range validVMSizeList {
validVMContainerSet[string(s)] = struct{}{}
}
// get all available VM size types for given location
listVMSize, err := sizesClient.ListVMSize(ctx, location)
if err != nil {
return nil, fmt.Errorf("failed to list sizes: %v", err)
}
var sizeList apiv1.AzureSizeList
for _, v := range listVMSize {
if v.Name != nil {
_, okSKU := validSKUSet[*v.Name]
_, okVMContainer := validVMContainerSet[*v.Name]
if okSKU && okVMContainer {
s := apiv1.AzureSize{
Name: *v.Name,
NumberOfCores: *v.NumberOfCores,
// TODO: Use this to validate user-defined disk size.
OsDiskSizeInMB: *v.OsDiskSizeInMB,
ResourceDiskSizeInMB: *v.ResourceDiskSizeInMB,
MemoryInMB: *v.MemoryInMB,
MaxDataDiskCount: *v.MaxDataDiskCount,
}
sizeList = append(sizeList, s)
}
}
}
return sizeList, nil
}
func AzureAvailabilityZonesWithClusterCredentialsEndpoint(projectProvider provider.ProjectProvider, privilegedProjectProvider provider.PrivilegedProjectProvider, seedsGetter provider.SeedsGetter, userInfoGetter provider.UserInfoGetter) endpoint.Endpoint {
return func(ctx context.Context, request interface{}) (interface{}, error) {
req := request.(AzureAvailabilityZonesNoCredentialsReq)
clusterProvider := ctx.Value(middleware.ClusterProviderContextKey).(provider.ClusterProvider)
cluster, err := cluster.GetCluster(ctx, projectProvider, privilegedProjectProvider, userInfoGetter, req.ProjectID, req.ClusterID, &provider.ClusterGetOptions{CheckInitStatus: true})
if err != nil {
return nil, err
}
if cluster.Spec.Cloud.Azure == nil {
return nil, errors.NewNotFound("cloud spec for ", req.ClusterID)
}
userInfo, err := userInfoGetter(ctx, "")
if err != nil {
return nil, common.KubernetesErrorToHTTPError(err)
}
dc, err := dc.GetDatacenter(userInfo, seedsGetter, cluster.Spec.Cloud.DatacenterName)
if err != nil {
return nil, errors.New(http.StatusInternalServerError, err.Error())
}
if dc.Spec.Azure == nil {
return nil, errors.NewNotFound("cloud spec (dc) for ", req.ClusterID)
}
azureLocation := dc.Spec.Azure.Location
assertedClusterProvider, ok := clusterProvider.(*kubernetesprovider.ClusterProvider)
if !ok {
return nil, errors.New(http.StatusInternalServerError, "failed to assert clusterProvider")
}
secretKeySelector := provider.SecretKeySelectorValueFuncFactory(ctx, assertedClusterProvider.GetSeedClusterAdminRuntimeClient())
creds, err := azure.GetCredentialsForCluster(cluster.Spec.Cloud, secretKeySelector)
if err != nil {
return nil, err
}
return azureSKUAvailabilityZones(ctx, creds.SubscriptionID, creds.ClientID, creds.ClientSecret, creds.TenantID, azureLocation, req.SKUName)
}
}
func AzureAvailabilityZonesEndpoint(presetsProvider provider.PresetProvider, userInfoGetter provider.UserInfoGetter) endpoint.Endpoint {
return func(ctx context.Context, request interface{}) (interface{}, error) {
req := request.(AvailabilityZonesReq)
subscriptionID := req.SubscriptionID
clientID := req.ClientID
clientSecret := req.ClientSecret
tenantID := req.TenantID
location := req.Location
skuName := req.SKUName
userInfo, err := userInfoGetter(ctx, "")
if err != nil {
return nil, common.KubernetesErrorToHTTPError(err)
}
if len(req.Credential) > 0 {
preset, err := presetsProvider.GetPreset(userInfo, req.Credential)
if err != nil {
return nil, errors.New(http.StatusInternalServerError, fmt.Sprintf("can not get preset %s for user %s", req.Credential, userInfo.Email))
}
if credentials := preset.Spec.Azure; credentials != nil {
subscriptionID = credentials.SubscriptionID
clientID = credentials.ClientID
clientSecret = credentials.ClientSecret
tenantID = credentials.TenantID
}
}
return azureSKUAvailabilityZones(ctx, subscriptionID, clientID, clientSecret, tenantID, location, skuName)
}
}
// AvailabilityZonesReq represent a request for Azure VM Multi-AvailabilityZones support
// swagger:parameters listAzureSKUAvailabilityZones
type AvailabilityZonesReq struct {
// in: header
SubscriptionID string
// in: header
TenantID string
// in: header
ClientID string
// in: header
ClientSecret string
// in: header
Location string
// in: header
SKUName string
// in: header
// Credential predefined Kubermatic credential name from the presets
Credential string
}
func azureSKUAvailabilityZones(ctx context.Context, subscriptionID, clientID, clientSecret, tenantID, location, skuName string) (*apiv1.AzureAvailabilityZonesList, error) {
azSKUClient, err := NewAzureClientSet(subscriptionID, clientID, clientSecret, tenantID)
if err != nil {
return nil, fmt.Errorf("failed to create authorizer for sku client: %v", err)
}
skuList, err := azSKUClient.ListSKU(ctx, location)
if err != nil {
return nil, fmt.Errorf("failed to list sku resource: %v", err)
}
var azZones = &apiv1.AzureAvailabilityZonesList{}
for _, sku := range skuList {
if skuName == *sku.Name {
for _, l := range *sku.LocationInfo {
if location == *l.Location {
if *l.Zones != nil && len(*l.Zones) > 0 {
azZones.Zones = *l.Zones
return azZones, nil
}
}
}
}
}
return nil, nil
}
// AzureSizeNoCredentialsReq represent a request for Azure VM sizes
// note that the request doesn't have credentials for authN
// swagger:parameters listAzureSizesNoCredentials
type AzureSizeNoCredentialsReq struct {
common.GetClusterReq
}
func DecodeAzureSizesNoCredentialsReq(c context.Context, r *http.Request) (interface{}, error) {
var req AzureSizeNoCredentialsReq
cr, err := common.DecodeGetClusterReq(c, r)
if err != nil {
return nil, err
}
req.GetClusterReq = cr.(common.GetClusterReq)
return req, nil
}
// AzureSizeReq represent a request for Azure VM sizes
// swagger:parameters listAzureSizes
type AzureSizeReq struct {
// in: header
SubscriptionID string
// in: header
TenantID string
// in: header
ClientID string
// in: header
ClientSecret string
// in: header
Location string
// in: header
// Credential predefined Kubermatic credential name from the presets
Credential string
}
func DecodeAzureSizesReq(c context.Context, r *http.Request) (interface{}, error) {
var req AzureSizeReq
req.SubscriptionID = r.Header.Get("SubscriptionID")
req.TenantID = r.Header.Get("TenantID")
req.ClientID = r.Header.Get("ClientID")
req.ClientSecret = r.Header.Get("ClientSecret")
req.Location = r.Header.Get("Location")
req.Credential = r.Header.Get("Credential")
return req, nil
}
func DecodeAzureAvailabilityZonesReq(c context.Context, r *http.Request) (interface{}, error) {
var req AvailabilityZonesReq
req.SubscriptionID = r.Header.Get("SubscriptionID")
req.TenantID = r.Header.Get("TenantID")
req.ClientID = r.Header.Get("ClientID")
req.ClientSecret = r.Header.Get("ClientSecret")
req.Location = r.Header.Get("Location")
req.SKUName = r.Header.Get("SKUName")
req.Credential = r.Header.Get("Credential")
return req, nil
}
// AzureAvailabilityZonesNoCredentialsReq represent a request for Azure Availability Zones
// note that the request doesn't have credentials for authN
// swagger:parameters listAzureAvailabilityZonesNoCredentials
type AzureAvailabilityZonesNoCredentialsReq struct {
common.GetClusterReq
// in: header
// name: SKUName
SKUName string
}
func DecodeAzureAvailabilityZonesNoCredentialsReq(c context.Context, r *http.Request) (interface{}, error) {
var req AzureAvailabilityZonesNoCredentialsReq
cr, err := common.DecodeGetClusterReq(c, r)
if err != nil {
return nil, err
}
req.GetClusterReq = cr.(common.GetClusterReq)
req.SKUName = r.Header.Get("SKUName")
return req, nil
}