mirror of
https://github.com/edgelesssys/constellation.git
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382 lines
15 KiB
Go
382 lines
15 KiB
Go
/*
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Copyright (c) Edgeless Systems GmbH
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SPDX-License-Identifier: AGPL-3.0-only
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*/
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package cloudcmd
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import (
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"context"
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"errors"
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"fmt"
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"net/url"
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"os"
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"path/filepath"
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"regexp"
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"runtime"
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"strings"
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"github.com/edgelesssys/constellation/v2/cli/internal/libvirt"
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"github.com/edgelesssys/constellation/v2/cli/internal/terraform"
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"github.com/edgelesssys/constellation/v2/internal/attestation/variant"
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"github.com/edgelesssys/constellation/v2/internal/cloud/cloudprovider"
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"github.com/edgelesssys/constellation/v2/internal/config"
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"github.com/edgelesssys/constellation/v2/internal/constants"
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"github.com/edgelesssys/constellation/v2/internal/file"
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"github.com/edgelesssys/constellation/v2/internal/mpimage"
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"github.com/edgelesssys/constellation/v2/internal/role"
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)
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// The azurerm Terraform provider enforces its own convention of case sensitivity for Azure URIs which Azure's API itself does not enforce or, even worse, actually returns.
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// These regular expression are used to make sure that the URIs we pass to Terraform are in the format that the provider expects.
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var (
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caseInsensitiveSubscriptionsRegexp = regexp.MustCompile(`(?i)\/subscriptions\/`)
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caseInsensitiveResourceGroupRegexp = regexp.MustCompile(`(?i)\/resourcegroups\/`)
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caseInsensitiveProvidersRegexp = regexp.MustCompile(`(?i)\/providers\/`)
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caseInsensitiveUserAssignedIdentitiesRegexp = regexp.MustCompile(`(?i)\/userassignedidentities\/`)
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caseInsensitiveMicrosoftManagedIdentity = regexp.MustCompile(`(?i)\/microsoft.managedidentity\/`)
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caseInsensitiveCommunityGalleriesRegexp = regexp.MustCompile(`(?i)\/communitygalleries\/`)
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caseInsensitiveImagesRegExp = regexp.MustCompile(`(?i)\/images\/`)
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caseInsensitiveVersionsRegExp = regexp.MustCompile(`(?i)\/versions\/`)
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)
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// TerraformIAMUpgradeVars returns variables required to execute IAM upgrades with Terraform.
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func TerraformIAMUpgradeVars(conf *config.Config, fileHandler file.Handler) (terraform.Variables, error) {
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// Load the tfvars of the existing IAM workspace.
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// Ideally we would only load values from the config file, but this currently does not hold all values required.
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// This should be refactored in the future.
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oldVarBytes, err := fileHandler.Read(filepath.Join(constants.TerraformIAMWorkingDir, "terraform.tfvars"))
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if err != nil {
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return nil, fmt.Errorf("reading existing IAM workspace: %w", err)
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}
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var vars terraform.Variables
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switch conf.GetProvider() {
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case cloudprovider.AWS:
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var oldVars terraform.AWSIAMVariables
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if err := terraform.VariablesFromBytes(oldVarBytes, &oldVars); err != nil {
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return nil, fmt.Errorf("parsing existing IAM workspace: %w", err)
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}
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vars = awsTerraformIAMVars(conf, oldVars)
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case cloudprovider.Azure:
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var oldVars terraform.AzureIAMVariables
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if err := terraform.VariablesFromBytes(oldVarBytes, &oldVars); err != nil {
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return nil, fmt.Errorf("parsing existing IAM workspace: %w", err)
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}
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vars = azureTerraformIAMVars(conf, oldVars)
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case cloudprovider.GCP:
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var oldVars terraform.GCPIAMVariables
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if err := terraform.VariablesFromBytes(oldVarBytes, &oldVars); err != nil {
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return nil, fmt.Errorf("parsing existing IAM workspace: %w", err)
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}
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vars = gcpTerraformIAMVars(conf, oldVars)
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default:
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return nil, fmt.Errorf("unsupported provider: %s", conf.GetProvider())
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}
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return vars, nil
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}
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// awsTerraformVars provides variables required to execute the Terraform scripts.
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// It should be the only place to declare the AWS variables.
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func awsTerraformVars(conf *config.Config, imageRef string) *terraform.AWSClusterVariables {
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nodeGroups := make(map[string]terraform.AWSNodeGroup)
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for groupName, group := range conf.NodeGroups {
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nodeGroups[groupName] = terraform.AWSNodeGroup{
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Role: role.FromString(group.Role).TFString(),
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StateDiskSizeGB: group.StateDiskSizeGB,
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InitialCount: group.InitialCount,
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Zone: group.Zone,
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InstanceType: group.InstanceType,
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DiskType: group.StateDiskType,
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}
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}
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return &terraform.AWSClusterVariables{
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Name: conf.Name,
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NodeGroups: nodeGroups,
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Region: conf.Provider.AWS.Region,
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Zone: conf.Provider.AWS.Zone,
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ImageID: imageRef,
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IAMProfileControlPlane: conf.Provider.AWS.IAMProfileControlPlane,
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IAMProfileWorkerNodes: conf.Provider.AWS.IAMProfileWorkerNodes,
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Debug: conf.IsDebugCluster(),
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EnableSNP: conf.GetAttestationConfig().GetVariant().Equal(variant.AWSSEVSNP{}),
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CustomEndpoint: conf.CustomEndpoint,
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InternalLoadBalancer: conf.InternalLoadBalancer,
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AdditionalTags: conf.Tags,
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}
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}
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func awsTerraformIAMVars(conf *config.Config, oldVars terraform.AWSIAMVariables) *terraform.AWSIAMVariables {
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return &terraform.AWSIAMVariables{
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Region: conf.Provider.AWS.Region,
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Prefix: oldVars.Prefix,
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}
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}
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func normalizeAzureURIs(vars *terraform.AzureClusterVariables) *terraform.AzureClusterVariables {
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vars.UserAssignedIdentity = caseInsensitiveSubscriptionsRegexp.ReplaceAllString(vars.UserAssignedIdentity, "/subscriptions/")
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vars.UserAssignedIdentity = caseInsensitiveResourceGroupRegexp.ReplaceAllString(vars.UserAssignedIdentity, "/resourceGroups/")
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vars.UserAssignedIdentity = caseInsensitiveProvidersRegexp.ReplaceAllString(vars.UserAssignedIdentity, "/providers/")
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vars.UserAssignedIdentity = caseInsensitiveUserAssignedIdentitiesRegexp.ReplaceAllString(vars.UserAssignedIdentity, "/userAssignedIdentities/")
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vars.UserAssignedIdentity = caseInsensitiveMicrosoftManagedIdentity.ReplaceAllString(vars.UserAssignedIdentity, "/Microsoft.ManagedIdentity/")
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vars.ImageID = caseInsensitiveCommunityGalleriesRegexp.ReplaceAllString(vars.ImageID, "/communityGalleries/")
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vars.ImageID = caseInsensitiveImagesRegExp.ReplaceAllString(vars.ImageID, "/images/")
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vars.ImageID = caseInsensitiveVersionsRegExp.ReplaceAllString(vars.ImageID, "/versions/")
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return vars
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}
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// azureTerraformVars provides variables required to execute the Terraform scripts.
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// It should be the only place to declare the Azure variables.
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func azureTerraformVars(conf *config.Config, imageRef string) (*terraform.AzureClusterVariables, error) {
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nodeGroups := make(map[string]terraform.AzureNodeGroup)
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for groupName, group := range conf.NodeGroups {
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zones := strings.Split(group.Zone, ",")
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if len(zones) == 0 || (len(zones) == 1 && zones[0] == "") {
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zones = nil
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}
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nodeGroups[groupName] = terraform.AzureNodeGroup{
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Role: role.FromString(group.Role).TFString(),
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InitialCount: group.InitialCount,
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InstanceType: group.InstanceType,
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DiskSizeGB: group.StateDiskSizeGB,
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DiskType: group.StateDiskType,
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Zones: zones,
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}
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}
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vars := &terraform.AzureClusterVariables{
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Name: conf.Name,
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NodeGroups: nodeGroups,
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Location: conf.Provider.Azure.Location,
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CreateMAA: toPtr(conf.GetAttestationConfig().GetVariant().Equal(variant.AzureSEVSNP{})),
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Debug: toPtr(conf.IsDebugCluster()),
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ConfidentialVM: toPtr(!conf.GetAttestationConfig().GetVariant().Equal(variant.AzureTrustedLaunch{})),
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SecureBoot: conf.Provider.Azure.SecureBoot,
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UserAssignedIdentity: conf.Provider.Azure.UserAssignedIdentity,
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ResourceGroup: conf.Provider.Azure.ResourceGroup,
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CustomEndpoint: conf.CustomEndpoint,
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InternalLoadBalancer: conf.InternalLoadBalancer,
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MarketplaceImage: nil,
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AdditionalTags: conf.Tags,
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}
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if conf.UseMarketplaceImage() {
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image, err := mpimage.NewFromURI(imageRef)
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if err != nil {
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return nil, fmt.Errorf("parsing marketplace image URI: %w", err)
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}
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azureImage, ok := image.(mpimage.AzureMarketplaceImage)
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if !ok {
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return nil, fmt.Errorf("expected Azure marketplace image, got %T", image)
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}
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// If a marketplace image is used, only the marketplace reference is required.
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vars.MarketplaceImage = &terraform.AzureMarketplaceImageVariables{
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Publisher: azureImage.Publisher,
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Product: azureImage.Offer,
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Name: azureImage.SKU,
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Version: azureImage.Version,
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}
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} else {
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// If not, we need to specify the exact CommunityGalleries/.. image reference.
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vars.ImageID = imageRef
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}
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vars = normalizeAzureURIs(vars)
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return vars, nil
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}
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func azureTerraformIAMVars(conf *config.Config, oldVars terraform.AzureIAMVariables) *terraform.AzureIAMVariables {
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return &terraform.AzureIAMVariables{
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Location: conf.Provider.Azure.Location,
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ServicePrincipal: oldVars.ServicePrincipal,
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ResourceGroup: conf.Provider.Azure.ResourceGroup,
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}
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}
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// gcpTerraformVars provides variables required to execute the Terraform scripts.
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// It should be the only place to declare the GCP variables.
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func gcpTerraformVars(conf *config.Config, imageRef string) *terraform.GCPClusterVariables {
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nodeGroups := make(map[string]terraform.GCPNodeGroup)
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for groupName, group := range conf.NodeGroups {
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nodeGroups[groupName] = terraform.GCPNodeGroup{
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Role: role.FromString(group.Role).TFString(),
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StateDiskSizeGB: group.StateDiskSizeGB,
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InitialCount: group.InitialCount,
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Zone: group.Zone,
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InstanceType: group.InstanceType,
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DiskType: group.StateDiskType,
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}
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}
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ccTech := "SEV"
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if conf.GetAttestationConfig().GetVariant().Equal(variant.GCPSEVSNP{}) {
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ccTech = "SEV_SNP"
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}
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return &terraform.GCPClusterVariables{
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Name: conf.Name,
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NodeGroups: nodeGroups,
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Project: conf.Provider.GCP.Project,
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Region: conf.Provider.GCP.Region,
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Zone: conf.Provider.GCP.Zone,
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ImageID: imageRef,
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Debug: conf.IsDebugCluster(),
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CustomEndpoint: conf.CustomEndpoint,
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InternalLoadBalancer: conf.InternalLoadBalancer,
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CCTechnology: ccTech,
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AdditionalLabels: conf.Tags,
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}
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}
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func gcpTerraformIAMVars(conf *config.Config, oldVars terraform.GCPIAMVariables) *terraform.GCPIAMVariables {
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return &terraform.GCPIAMVariables{
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Project: conf.Provider.GCP.Project,
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Region: conf.Provider.GCP.Region,
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Zone: conf.Provider.GCP.Zone,
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ServiceAccountID: oldVars.ServiceAccountID,
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}
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}
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// openStackTerraformVars provides variables required to execute the Terraform scripts.
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// It should be the only place to declare the OpenStack variables.
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func openStackTerraformVars(conf *config.Config, imageRef string) (*terraform.OpenStackClusterVariables, error) {
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if _, hasOSAuthURL := os.LookupEnv("OS_AUTH_URL"); !hasOSAuthURL && conf.Provider.OpenStack.Cloud == "" {
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return nil, errors.New(
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"neither environment variable OS_AUTH_URL nor cloud name for \"clouds.yaml\" is set. OpenStack authentication requires a set of " +
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"OS_* environment variables that are typically sourced into the current shell with an openrc file " +
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"or a cloud name for \"clouds.yaml\". " +
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"See https://docs.openstack.org/openstacksdk/latest/user/config/configuration.html for more information",
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)
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}
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nodeGroups := make(map[string]terraform.OpenStackNodeGroup)
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for groupName, group := range conf.NodeGroups {
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nodeGroups[groupName] = terraform.OpenStackNodeGroup{
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Role: role.FromString(group.Role).TFString(),
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StateDiskSizeGB: group.StateDiskSizeGB,
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InitialCount: group.InitialCount,
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FlavorID: group.InstanceType,
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Zone: group.Zone,
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StateDiskType: group.StateDiskType,
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}
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}
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// since openstack does not support tags in the form of key = value, the tags will be converted
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// to an array of "key=value" strings
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tags := []string{}
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for key, value := range conf.Tags {
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tags = append(tags, fmt.Sprintf("%s=%s", key, value))
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}
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return &terraform.OpenStackClusterVariables{
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Name: conf.Name,
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Cloud: toPtr(conf.Provider.OpenStack.Cloud),
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OpenStackCloudsYAMLPath: conf.Provider.OpenStack.CloudsYAMLPath,
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FloatingIPPoolID: conf.Provider.OpenStack.FloatingIPPoolID,
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ImageID: imageRef,
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Debug: conf.IsDebugCluster(),
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NodeGroups: nodeGroups,
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CustomEndpoint: conf.CustomEndpoint,
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InternalLoadBalancer: conf.InternalLoadBalancer,
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STACKITProjectID: conf.Provider.OpenStack.STACKITProjectID,
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AdditionalTags: tags,
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}, nil
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}
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// qemuTerraformVars provides variables required to execute the Terraform scripts.
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// It should be the only place to declare the QEMU variables.
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func qemuTerraformVars(
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ctx context.Context, conf *config.Config, imageRef string,
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lv libvirtRunner, downloader rawDownloader,
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) (*terraform.QEMUVariables, error) {
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if runtime.GOARCH != "amd64" || runtime.GOOS != "linux" {
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return nil, fmt.Errorf("creation of a QEMU based Constellation is not supported for %s/%s", runtime.GOOS, runtime.GOARCH)
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}
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imagePath, err := downloader.Download(ctx, nil, false, imageRef, conf.Image)
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if err != nil {
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return nil, fmt.Errorf("download raw image: %w", err)
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}
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libvirtURI := conf.Provider.QEMU.LibvirtURI
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libvirtSocketPath := "."
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switch {
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// if no libvirt URI is specified, start a libvirt container
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case libvirtURI == "":
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if err := lv.Start(ctx, conf.Name, conf.Provider.QEMU.LibvirtContainerImage); err != nil {
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return nil, fmt.Errorf("start libvirt container: %w", err)
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}
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libvirtURI = libvirt.LibvirtTCPConnectURI
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// socket for system URI should be in /var/run/libvirt/libvirt-sock
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case libvirtURI == "qemu:///system":
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libvirtSocketPath = "/var/run/libvirt/libvirt-sock"
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// socket for session URI should be in /run/user/<uid>/libvirt/libvirt-sock
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case libvirtURI == "qemu:///session":
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libvirtSocketPath = fmt.Sprintf("/run/user/%d/libvirt/libvirt-sock", os.Getuid())
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// if a unix socket is specified we need to parse the URI to get the socket path
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case strings.HasPrefix(libvirtURI, "qemu+unix://"):
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unixURI, err := url.Parse(strings.TrimPrefix(libvirtURI, "qemu+unix://"))
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if err != nil {
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return nil, err
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}
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libvirtSocketPath = unixURI.Query().Get("socket")
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if libvirtSocketPath == "" {
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return nil, fmt.Errorf("socket path not specified in qemu+unix URI: %s", libvirtURI)
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}
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}
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metadataLibvirtURI := libvirtURI
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if libvirtSocketPath != "." {
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metadataLibvirtURI = "qemu:///system"
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}
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var firmware *string
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if conf.Provider.QEMU.Firmware != "" {
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firmware = &conf.Provider.QEMU.Firmware
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}
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nodeGroups := make(map[string]terraform.QEMUNodeGroup)
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for groupName, group := range conf.NodeGroups {
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nodeGroups[groupName] = terraform.QEMUNodeGroup{
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Role: role.FromString(group.Role).TFString(),
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InitialCount: group.InitialCount,
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DiskSize: group.StateDiskSizeGB,
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CPUCount: conf.Provider.QEMU.VCPUs,
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MemorySize: conf.Provider.QEMU.Memory,
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}
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}
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return &terraform.QEMUVariables{
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Name: conf.Name,
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LibvirtURI: libvirtURI,
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LibvirtSocketPath: libvirtSocketPath,
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// TODO(malt3): auto select boot mode based on attestation variant.
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// requires image info v2.
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BootMode: "uefi",
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ImagePath: imagePath,
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ImageFormat: conf.Provider.QEMU.ImageFormat,
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NodeGroups: nodeGroups,
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Machine: "q35", // TODO(elchead): make configurable AB#3225
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MetadataAPIImage: conf.Provider.QEMU.MetadataAPIImage,
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MetadataLibvirtURI: metadataLibvirtURI,
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NVRAM: conf.Provider.QEMU.NVRAM,
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Firmware: firmware,
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// TODO(malt3) enable once we have a way to auto-select values for these
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// requires image info v2.
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// BzImagePath: placeholder,
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// InitrdPath: placeholder,
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// KernelCmdline: placeholder,
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}, nil
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}
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func toPtr[T any](v T) *T {
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return &v
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}
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