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cloud_service.go
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cloud_service.go
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// Copyright 2021-2022 Fraunhofer AISEC
//
// 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.
//
// $$\ $$\ $$\ $$\
// $$ | $$ |\__| $$ |
// $$$$$$$\ $$ | $$$$$$\ $$\ $$\ $$$$$$$ |$$\ $$$$$$\ $$$$$$\ $$$$$$\
// $$ _____|$$ |$$ __$$\ $$ | $$ |$$ __$$ |$$ |\_$$ _| $$ __$$\ $$ __$$\
// $$ / $$ |$$ / $$ |$$ | $$ |$$ / $$ |$$ | $$ | $$ / $$ |$$ | \__|
// $$ | $$ |$$ | $$ |$$ | $$ |$$ | $$ |$$ | $$ |$$\ $$ | $$ |$$ |
// \$$$$$$\ $$ |\$$$$$ |\$$$$$ |\$$$$$$ |$$ | \$$$ |\$$$$$ |$$ |
// \_______|\__| \______/ \______/ \_______|\__| \____/ \______/ \__|
//
// This file is part of Clouditor Community Edition.
package orchestrator
import (
"context"
"errors"
"fmt"
"clouditor.io/clouditor/api"
"clouditor.io/clouditor/api/orchestrator"
"clouditor.io/clouditor/persistence"
"clouditor.io/clouditor/service"
"github.com/google/uuid"
"google.golang.org/grpc/codes"
"google.golang.org/grpc/status"
"google.golang.org/protobuf/types/known/emptypb"
)
const (
DefaultTargetCloudServiceId = "00000000-0000-0000-000000000000"
DefaultTargetCloudServiceName = "default"
DefaultTargetCloudServiceDescription = "The default target cloud service"
)
func (s *Service) RegisterCloudService(_ context.Context, req *orchestrator.RegisterCloudServiceRequest) (service *orchestrator.CloudService, err error) {
if req == nil {
return nil, status.Errorf(codes.InvalidArgument, api.ErrRequestIsNil.Error())
}
if req.Service == nil {
return nil, status.Errorf(codes.InvalidArgument, orchestrator.ErrServiceIsNil.Error())
}
if req.Service.Name == "" {
return nil, status.Errorf(codes.InvalidArgument, orchestrator.ErrNameIsMissing.Error())
}
service = new(orchestrator.CloudService)
// Generate a new ID
service.Id = uuid.NewString()
service.Name = req.Service.Name
service.Description = req.Service.Description
// Persist the service in our database
err = s.storage.Create(service)
if err != nil {
return nil, status.Errorf(codes.Internal, "could not add cloud service to the database: %v", err)
}
return
}
// ListCloudServices implements method for OrchestratorServer interface for listing all cloud services
func (svc *Service) ListCloudServices(_ context.Context, req *orchestrator.ListCloudServicesRequest) (
res *orchestrator.ListCloudServicesResponse, err error) {
res = new(orchestrator.ListCloudServicesResponse)
// Validate tne request
if err = api.ValidateListRequest[*orchestrator.CloudService](req); err != nil {
err = fmt.Errorf("invalid request: %w", err)
log.Error(err)
err = status.Errorf(codes.InvalidArgument, "%v", err)
return
}
// Paginate the cloud services according to the request
res.Services, res.NextPageToken, err = service.PaginateStorage[*orchestrator.CloudService](req, svc.storage,
service.DefaultPaginationOpts)
if err != nil {
return nil, status.Errorf(codes.Internal, "could not paginate results: %v", err)
}
return
}
// GetCloudService implements method for OrchestratorServer interface for getting a cloud service with provided id
func (s *Service) GetCloudService(_ context.Context, req *orchestrator.GetCloudServiceRequest) (response *orchestrator.CloudService, err error) {
if req == nil {
return nil, status.Errorf(codes.InvalidArgument, api.ErrRequestIsNil.Error())
}
if req.ServiceId == "" {
return nil, status.Errorf(codes.InvalidArgument, orchestrator.ErrIDIsMissing.Error())
}
response = new(orchestrator.CloudService)
err = s.storage.Get(response, "Id = ?", req.ServiceId)
if errors.Is(err, persistence.ErrRecordNotFound) {
return nil, status.Errorf(codes.NotFound, "service not found")
} else if err != nil {
return nil, status.Errorf(codes.Internal, "database error: %s", err)
}
return response, nil
}
// UpdateCloudService implements method for OrchestratorServer interface for updating a cloud service
func (s *Service) UpdateCloudService(ctx context.Context, req *orchestrator.UpdateCloudServiceRequest) (response *orchestrator.CloudService, err error) {
if req.Service == nil {
return nil, status.Errorf(codes.InvalidArgument, "service is empty")
}
if req.ServiceId == "" {
return nil, status.Errorf(codes.InvalidArgument, "service id is empty")
}
count, err := s.storage.Count(req.Service, "Id = ?", req.ServiceId)
if err != nil {
return nil, status.Errorf(codes.Internal, "database error: %s", err)
}
if count == 0 {
return nil, status.Error(codes.NotFound, "service not found")
}
// Add id to response because otherwise it will overwrite ID with empty string
response = req.Service
response.Id = req.ServiceId
// Since UpdateCloudService is a PUT method, we use storage.Save
err = s.storage.Save(response, "Id = ?", req.ServiceId)
if err != nil {
return nil, status.Errorf(codes.Internal, "database error: %v", err)
}
go s.informHooks(ctx, response, nil)
return
}
// RemoveCloudService implements method for OrchestratorServer interface for removing a cloud service
func (s *Service) RemoveCloudService(_ context.Context, req *orchestrator.RemoveCloudServiceRequest) (response *emptypb.Empty, err error) {
if req.ServiceId == "" {
return nil, status.Errorf(codes.InvalidArgument, "service id is empty")
}
err = s.storage.Delete(&orchestrator.CloudService{Id: req.ServiceId})
if errors.Is(err, persistence.ErrRecordNotFound) {
return nil, status.Errorf(codes.NotFound, "service not found")
} else if err != nil {
return nil, status.Errorf(codes.Internal, "database error: %s", err)
}
return &emptypb.Empty{}, nil
}
// CreateDefaultTargetCloudService creates a new "default" target cloud services,
// if no target service exists in the database.
//
// If a new target cloud service was created, it will be returned.
func (s *Service) CreateDefaultTargetCloudService() (service *orchestrator.CloudService, err error) {
log.Infof("Trying to create new default target cloud service...")
count, err := s.storage.Count(service)
if err != nil {
return nil, fmt.Errorf("storage error: %w", err)
}
if count == 0 {
// Create a default target cloud service
service =
&orchestrator.CloudService{
Id: DefaultTargetCloudServiceId,
Name: DefaultTargetCloudServiceName,
Description: DefaultTargetCloudServiceDescription,
}
// Save it in the database
err = s.storage.Create(service)
if err != nil {
return nil, fmt.Errorf("storage error: %w", err)
} else {
log.Infof("Created new default target cloud service: %s", service.Id)
}
}
return
}