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serviceaccounts.go
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/
serviceaccounts.go
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// Copyright 2022 Google LLC
//
// 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 mockiam
import (
"context"
"crypto/md5"
"regexp"
"strconv"
"time"
"google.golang.org/grpc/codes"
"google.golang.org/grpc/status"
"google.golang.org/protobuf/proto"
"google.golang.org/protobuf/types/known/emptypb"
"k8s.io/klog/v2"
"github.com/GoogleCloudPlatform/k8s-config-connector/mockgcp/common/projects"
pb "github.com/GoogleCloudPlatform/k8s-config-connector/mockgcp/generated/mockgcp/iam/admin/v1"
"github.com/GoogleCloudPlatform/k8s-config-connector/mockgcp/pkg/storage"
)
const ServiceAccountSuffix = ".iam.gserviceaccount.com"
// Gets a [ServiceAccount][google.iam.admin.v1.ServiceAccount].
func (s *ServerV1) GetServiceAccount(ctx context.Context, req *pb.GetServiceAccountRequest) (*pb.ServiceAccount, error) {
name, err := s.parseServiceAccountName(ctx, req.Name)
if err != nil {
return nil, err
}
if isNumber(name.Email) {
uniqueID := name.Email
// TODO: Some sort of index on uniqueid
var found *pb.ServiceAccount
serviceAccountKind := (&pb.ServiceAccount{}).ProtoReflect().Descriptor()
if err := s.storage.List(ctx, serviceAccountKind, storage.ListOptions{
Prefix: "projects/" + name.Project.ID + "/",
}, func(obj proto.Message) error {
sa := obj.(*pb.ServiceAccount)
if sa.UniqueId == uniqueID {
found = sa
}
return nil
}); err != nil {
return nil, status.Errorf(codes.Internal, "error reading serviceaccounts: %v", err)
}
if found == nil {
return nil, status.Errorf(codes.NotFound, "Unknown service account")
}
return found, nil
}
sa := &pb.ServiceAccount{}
fqn := name.String()
if err := s.storage.Get(ctx, fqn, sa); err != nil {
if status.Code(err) == codes.NotFound {
return nil, status.Errorf(codes.NotFound, "Unknown service account")
}
return nil, err
}
return sa, nil
}
func isNumber(s string) bool {
match, _ := regexp.MatchString("^[0-9]+$", s)
return match
}
// Creates a [ServiceAccount][google.iam.admin.v1.ServiceAccount].
func (s *ServerV1) CreateServiceAccount(ctx context.Context, req *pb.CreateServiceAccountRequest) (*pb.ServiceAccount, error) {
accountID := req.AccountId
if accountID == "" {
return nil, status.Errorf(codes.InvalidArgument, "AccountId is required")
}
projectName, err := projects.ParseProjectName(req.Name)
if err != nil {
return nil, err
}
project, err := s.Projects.GetProject(projectName)
if err != nil {
return nil, err
}
name := &serviceAccountName{
Project: project,
Email: accountID + "@" + project.ID + ServiceAccountSuffix,
}
// TODO: Something more real
id := time.Now().UnixNano()
id = id & 0xffffffff
projectNumber := project.Number
uniqueID := int64(projectNumber)
uniqueID <<= 32
uniqueID |= id
sa := proto.Clone(req.GetServiceAccount()).(*pb.ServiceAccount)
sa.Name = name.String()
sa.ProjectId = project.ID
sa.UniqueId = strconv.FormatInt(uniqueID, 10)
sa.Email = name.Email
sa.Oauth2ClientId = sa.UniqueId
sa.Etag = computeEtag(sa)
fqn := name.String()
if err := s.storage.Create(ctx, fqn, sa); err != nil {
return nil, err
}
return sa, nil
}
func (s *ServerV1) DeleteServiceAccount(ctx context.Context, req *pb.DeleteServiceAccountRequest) (*emptypb.Empty, error) {
name, err := s.serverV1.parseServiceAccountName(ctx, req.Name)
if err != nil {
return nil, err
}
fqn := name.String()
deletedObj := &pb.ServiceAccount{}
if err := s.storage.Delete(ctx, fqn, deletedObj); err != nil {
return nil, err
}
return &emptypb.Empty{}, nil
}
func (s *ServerV1) PatchServiceAccount(ctx context.Context, req *pb.PatchServiceAccountRequest) (*pb.ServiceAccount, error) {
reqName := req.GetServiceAccount().GetName()
name, err := s.serverV1.parseServiceAccountName(ctx, reqName)
if err != nil {
return nil, err
}
fqn := name.String()
sa := &pb.ServiceAccount{}
if err := s.storage.Get(ctx, fqn, sa); err != nil {
return nil, err
}
// You can patch only the `display_name` and `description` fields.
// You must use the `update_mask` field to specify which of these fields you want to patch.
paths := req.GetUpdateMask().GetPaths()
for _, path := range paths {
switch path {
case "display_name":
sa.DisplayName = req.GetServiceAccount().GetDisplayName()
case "description":
sa.Description = req.GetServiceAccount().GetDescription()
default:
return nil, status.Errorf(codes.InvalidArgument, "update_mask path %q not valid", path)
}
}
if err := s.storage.Update(ctx, fqn, sa); err != nil {
return nil, err
}
// Unclear exactly what's going on here, but it seems to only return some of the fields
// (maybe the ones we've patched?)
retVal := &pb.ServiceAccount{
Name: sa.Name,
DisplayName: sa.DisplayName,
}
return retVal, nil
}
func (s *ServerV1) DisableServiceAccount(ctx context.Context, req *pb.DisableServiceAccountRequest) (*emptypb.Empty, error) {
name, err := s.serverV1.parseServiceAccountName(ctx, req.GetName())
if err != nil {
return nil, err
}
fqn := name.String()
sa := &pb.ServiceAccount{}
if err := s.storage.Get(ctx, fqn, sa); err != nil {
return nil, err
}
sa.Disabled = true
if err := s.storage.Update(ctx, fqn, sa); err != nil {
return nil, err
}
return &emptypb.Empty{}, nil
}
func (s *ServerV1) EnableServiceAccount(ctx context.Context, req *pb.EnableServiceAccountRequest) (*emptypb.Empty, error) {
name, err := s.serverV1.parseServiceAccountName(ctx, req.GetName())
if err != nil {
return nil, err
}
fqn := name.String()
sa := &pb.ServiceAccount{}
if err := s.storage.Get(ctx, fqn, sa); err != nil {
return nil, err
}
sa.Disabled = false
if err := s.storage.Update(ctx, fqn, sa); err != nil {
return nil, err
}
return &emptypb.Empty{}, nil
}
func computeEtag(obj proto.Message) []byte {
// TODO: Do we risk exposing internal fields? Doesn't matter on a mock, I guess
b, err := proto.Marshal(obj)
if err != nil {
klog.Fatalf("failed to marshal proto object: %v", err)
}
hash := md5.Sum(b)
return hash[:]
}