constellation/internal/cloud/azure/scaleset.go
Fabian Kammel 778952e07c
AB#2287 support community image IDs (#9)
* support community image IDs
Signed-off-by: Fabian Kammel <fk@edgeless.systems>
2022-08-30 15:15:51 +02:00

132 lines
4.8 KiB
Go

package azure
import (
"context"
"errors"
"fmt"
"regexp"
"strings"
"github.com/Azure/azure-sdk-for-go/sdk/azcore/to"
armcomputev2 "github.com/Azure/azure-sdk-for-go/sdk/resourcemanager/compute/armcompute/v2"
"github.com/Azure/azure-sdk-for-go/sdk/resourcemanager/network/armnetwork"
"github.com/edgelesssys/constellation/internal/azureshared"
"github.com/edgelesssys/constellation/internal/cloud/metadata"
"github.com/edgelesssys/constellation/internal/role"
)
var (
controlPlaneScaleSetRegexp = regexp.MustCompile(`constellation-scale-set-controlplanes-[0-9a-zA-Z]+$`)
workerScaleSetRegexp = regexp.MustCompile(`constellation-scale-set-workers-[0-9a-zA-Z]+$`)
)
// getScaleSetVM tries to get an azure vm belonging to a scale set.
func (m *Metadata) getScaleSetVM(ctx context.Context, providerID string) (metadata.InstanceMetadata, error) {
_, resourceGroup, scaleSet, instanceID, err := azureshared.ScaleSetInformationFromProviderID(providerID)
if err != nil {
return metadata.InstanceMetadata{}, err
}
vmResp, err := m.virtualMachineScaleSetVMsAPI.Get(ctx, resourceGroup, scaleSet, instanceID, nil)
if err != nil {
return metadata.InstanceMetadata{}, err
}
networkInterfaces, err := m.getScaleSetVMInterfaces(ctx, vmResp.VirtualMachineScaleSetVM, resourceGroup, scaleSet, instanceID)
if err != nil {
return metadata.InstanceMetadata{}, err
}
publicIPAddress, err := m.getScaleSetVMPublicIPAddress(ctx, resourceGroup, scaleSet, instanceID, networkInterfaces)
if err != nil {
return metadata.InstanceMetadata{}, err
}
return convertScaleSetVMToCoreInstance(scaleSet, vmResp.VirtualMachineScaleSetVM, networkInterfaces, publicIPAddress)
}
// listScaleSetVMs lists all scale set VMs in the current resource group.
func (m *Metadata) listScaleSetVMs(ctx context.Context, resourceGroup string) ([]metadata.InstanceMetadata, error) {
instances := []metadata.InstanceMetadata{}
scaleSetPager := m.scaleSetsAPI.NewListPager(resourceGroup, nil)
for scaleSetPager.More() {
page, err := scaleSetPager.NextPage(ctx)
if err != nil {
return nil, fmt.Errorf("retrieving scale sets: %w", err)
}
for _, scaleSet := range page.Value {
if scaleSet == nil || scaleSet.Name == nil {
continue
}
vmPager := m.virtualMachineScaleSetVMsAPI.NewListPager(resourceGroup, *scaleSet.Name, nil)
for vmPager.More() {
vmPage, err := vmPager.NextPage(ctx)
if err != nil {
return nil, fmt.Errorf("retrieving vms: %w", err)
}
for _, vm := range vmPage.Value {
if vm == nil || vm.InstanceID == nil {
continue
}
interfaces, err := m.getScaleSetVMInterfaces(ctx, *vm, resourceGroup, *scaleSet.Name, *vm.InstanceID)
if err != nil {
return nil, err
}
instance, err := convertScaleSetVMToCoreInstance(*scaleSet.Name, *vm, interfaces, "")
if err != nil {
return nil, err
}
instances = append(instances, instance)
}
}
}
}
return instances, nil
}
// convertScaleSetVMToCoreInstance converts an azure scale set virtual machine with interface configurations into a core.Instance.
func convertScaleSetVMToCoreInstance(scaleSet string, vm armcomputev2.VirtualMachineScaleSetVM, networkInterfaces []armnetwork.Interface, publicIPAddress string) (metadata.InstanceMetadata, error) {
if vm.ID == nil {
return metadata.InstanceMetadata{}, errors.New("retrieving instance from armcompute API client returned no instance ID")
}
if vm.Properties == nil || vm.Properties.OSProfile == nil || vm.Properties.OSProfile.ComputerName == nil {
return metadata.InstanceMetadata{}, errors.New("retrieving instance from armcompute API client returned no computer name")
}
var sshKeys map[string][]string
if vm.Properties.OSProfile.LinuxConfiguration == nil || vm.Properties.OSProfile.LinuxConfiguration.SSH == nil {
sshKeys = map[string][]string{}
} else {
sshKeys = extractSSHKeys(*vm.Properties.OSProfile.LinuxConfiguration.SSH)
}
return metadata.InstanceMetadata{
Name: *vm.Properties.OSProfile.ComputerName,
ProviderID: "azure://" + *vm.ID,
Role: extractScaleSetVMRole(scaleSet),
VPCIP: extractVPCIP(networkInterfaces),
PublicIP: publicIPAddress,
SSHKeys: sshKeys,
}, nil
}
// extractScaleSetVMRole extracts the constellation role of a scale set using its name.
func extractScaleSetVMRole(scaleSet string) role.Role {
if controlPlaneScaleSetRegexp.MatchString(scaleSet) {
return role.ControlPlane
}
if workerScaleSetRegexp.MatchString(scaleSet) {
return role.Worker
}
return role.Unknown
}
// ImageReferenceFromImage sets the `ID` or `CommunityGalleryImageID` field
// of `ImageReference` depending on the provided `img`.
func ImageReferenceFromImage(img string) *armcomputev2.ImageReference {
ref := &armcomputev2.ImageReference{}
if strings.HasPrefix(img, "/CommunityGalleries") {
ref.CommunityGalleryImageID = to.Ptr(img)
} else {
ref.ID = to.Ptr(img)
}
return ref
}