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credentials.go
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credentials.go
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package gcp
import (
"context"
"fmt"
"time"
v1 "github.com/openshift/cloud-credential-operator/pkg/apis/cloudcredential/v1"
errorUtil "github.com/pkg/errors"
v12 "k8s.io/api/core/v1"
"k8s.io/apimachinery/pkg/api/errors"
"k8s.io/apimachinery/pkg/types"
"k8s.io/apimachinery/pkg/util/wait"
controllerruntime "sigs.k8s.io/controller-runtime"
"sigs.k8s.io/controller-runtime/pkg/client"
"sigs.k8s.io/controller-runtime/pkg/controller/controllerutil"
)
const (
defaultCredentialsServiceAccount = "service_account.json"
defaultProviderCredentialName = "cloud-resource-gcp-credentials"
)
var (
operatorRoles = []string{
"roles/compute.networkAdmin",
"roles/storage.admin",
"roles/redis.admin",
"roles/cloudsql.admin",
"roles/servicenetworking.networksAdmin",
"roles/monitoring.viewer",
}
timeOut = time.Minute * 5
)
type Credentials struct {
ServiceAccountID string
ServiceAccountJson []byte
}
//go:generate moq -out credentials_moq.go . CredentialManager
type CredentialManager interface {
ReconcileProviderCredentials(ctx context.Context, ns string) (*Credentials, error)
ReconcileCredentials(ctx context.Context, name string, ns string, roles []string) (*v1.CredentialsRequest, *Credentials, error)
}
type CredentialMinterCredentialManager struct {
ProviderCredentialName string
Client client.Client
}
func NewCredentialMinterCredentialManager(client client.Client) *CredentialMinterCredentialManager {
return &CredentialMinterCredentialManager{
ProviderCredentialName: defaultProviderCredentialName,
Client: client,
}
}
func (m *CredentialMinterCredentialManager) ReconcileProviderCredentials(ctx context.Context, ns string) (*Credentials, error) {
_, creds, err := m.ReconcileCredentials(ctx, m.ProviderCredentialName, ns, operatorRoles)
if err != nil {
return nil, err
}
return creds, nil
}
func (m *CredentialMinterCredentialManager) ReconcileCredentials(ctx context.Context, name string, ns string, roles []string) (*v1.CredentialsRequest, *Credentials, error) {
cr, err := m.reconcileCredentialRequest(ctx, name, ns, roles)
if err != nil {
return nil, nil, errorUtil.Wrapf(err, "failed to reconcile gcp credential request %s", name)
}
err = wait.PollImmediate(time.Second*5, timeOut, func() (done bool, err error) {
if err = m.Client.Get(ctx, types.NamespacedName{Name: cr.Name, Namespace: cr.Namespace}, cr); err != nil {
if errors.IsNotFound(err) {
return false, nil
}
return false, err
}
return cr.Status.Provisioned, nil
})
if err != nil {
return nil, nil, errorUtil.Wrap(err, "timed out waiting for credential request to become provisioned")
}
codec, err := v1.NewCodec()
if err != nil {
return nil, nil, errorUtil.Wrap(err, "failed to create credentials codec")
}
gcpProvStatus := &v1.GCPProviderStatus{}
if err = codec.DecodeProviderSpec(cr.Status.ProviderStatus, gcpProvStatus); err != nil {
return nil, nil, errorUtil.Wrapf(err, "failed to decode credentials request %s", cr.Name)
}
gcpServiceAccountJson, err := m.reconcileGCPCredentials(ctx, cr)
if err != nil {
return nil, nil, errorUtil.Wrapf(err, "failed to reconcile gcp credentials from credential request %s", cr.Name)
}
return cr, &Credentials{
ServiceAccountID: gcpProvStatus.ServiceAccountID,
ServiceAccountJson: gcpServiceAccountJson,
}, nil
}
var _ CredentialManager = (*CredentialMinterCredentialManager)(nil)
func (m *CredentialMinterCredentialManager) reconcileCredentialRequest(ctx context.Context, name string, ns string, roles []string) (*v1.CredentialsRequest, error) {
codec, err := v1.NewCodec()
if err != nil {
return nil, errorUtil.Wrap(err, "failed to create provider codec")
}
providerSpec, err := codec.EncodeProviderSpec(&v1.GCPProviderSpec{
TypeMeta: controllerruntime.TypeMeta{
Kind: "GCPProviderSpec",
},
PredefinedRoles: roles,
SkipServiceCheck: true,
})
if err != nil {
return nil, errorUtil.Wrap(err, "failed to encode provider spec")
}
cr := &v1.CredentialsRequest{
ObjectMeta: controllerruntime.ObjectMeta{
Name: name,
Namespace: ns,
},
}
_, err = controllerutil.CreateOrUpdate(ctx, m.Client, cr, func() error {
cr.Spec.ProviderSpec = providerSpec
cr.Spec.SecretRef = v12.ObjectReference{
Name: name,
Namespace: ns,
}
return nil
})
if err != nil {
return nil, errorUtil.Wrapf(err, "failed to reconcile credential request %s in namespace %s", cr.Name, cr.Namespace)
}
return cr, nil
}
func (m *CredentialMinterCredentialManager) reconcileGCPCredentials(ctx context.Context, cr *v1.CredentialsRequest) ([]byte, error) {
sec := &v12.Secret{}
err := m.Client.Get(ctx, types.NamespacedName{Name: cr.Spec.SecretRef.Name, Namespace: cr.Spec.SecretRef.Namespace}, sec)
if err != nil {
return nil, errorUtil.Wrapf(err, "failed to get gcp credentials secret %s", cr.Spec.SecretRef.Name)
}
gcpServiceAccount := sec.Data[defaultCredentialsServiceAccount]
if len(gcpServiceAccount) == 0 {
return nil, errorUtil.New(fmt.Sprintf("gcp service account is undefined in secret %s", sec.Name))
}
return gcpServiceAccount, nil
}