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/
service_manager.go
167 lines (142 loc) · 5.11 KB
/
service_manager.go
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package handler
import (
"errors"
"fmt"
"time"
"github.com/keptn/go-utils/pkg/common/retry"
"github.com/keptn/keptn/resource-service/common"
"github.com/keptn/keptn/resource-service/common_models"
kerrors "github.com/keptn/keptn/resource-service/errors"
"github.com/keptn/keptn/resource-service/models"
"gopkg.in/yaml.v3"
)
//IServiceManager provides an interface for stage CRUD operations
//go:generate moq -pkg handler_mock -skip-ensure -out ./fake/service_manager_mock.go . IServiceManager
type IServiceManager interface {
CreateService(params models.CreateServiceParams) error
DeleteService(params models.DeleteServiceParams) error
}
type ServiceManager struct {
git common.IGit
credentialReader common.CredentialReader
fileSystem common.IFileSystem
stageContext IConfigurationContext
}
func NewServiceManager(git common.IGit, credentialReader common.CredentialReader, fileWriter common.IFileSystem, stageContext IConfigurationContext) *ServiceManager {
serviceManager := &ServiceManager{
git: git,
credentialReader: credentialReader,
fileSystem: fileWriter,
stageContext: stageContext,
}
return serviceManager
}
func (s ServiceManager) CreateService(params models.CreateServiceParams) error {
common.LockProject(params.ProjectName)
defer common.UnlockProject(params.ProjectName)
gitContext, servicePath, err := s.establishServiceContext(params.Project, params.Stage, params.Service)
if err != nil {
return err
}
var resultErr error
_ = retry.Retry(func() error {
err = s.git.Pull(*gitContext)
if err != nil {
resultErr = err
return nil
}
_, err = s.createService(gitContext, params.ServiceName, servicePath)
if err != nil {
if errors.Is(err, kerrors.ErrNonFastForwardUpdate) || errors.Is(err, kerrors.ErrForceNeeded) {
return err
}
resultErr = err
return nil
}
resultErr = err
return nil
}, retry.NumberOfRetries(5), retry.DelayBetweenRetries(1*time.Second))
return resultErr
}
func (s ServiceManager) DeleteService(params models.DeleteServiceParams) error {
common.LockProject(params.ProjectName)
defer common.UnlockProject(params.ProjectName)
gitContext, servicePath, err := s.establishServiceContext(params.Project, params.Stage, params.Service)
if err != nil {
return err
}
var resultErr error
_ = retry.Retry(func() error {
err = s.git.Pull(*gitContext)
if err != nil {
resultErr = err
return nil
}
_, err = s.deleteService(gitContext, params.ServiceName, servicePath)
if err != nil {
if errors.Is(err, kerrors.ErrNonFastForwardUpdate) || errors.Is(err, kerrors.ErrForceNeeded) {
return err
}
resultErr = err
return nil
}
resultErr = err
return nil
}, retry.NumberOfRetries(5), retry.DelayBetweenRetries(1*time.Second))
return resultErr
}
func (s ServiceManager) deleteService(gitContext *common_models.GitContext, serviceName, servicePath string) (string, error) {
if !s.fileSystem.FileExists(servicePath) {
return "", kerrors.ErrServiceNotFound
}
if err := s.fileSystem.DeleteFile(servicePath); err != nil {
return "", err
}
return s.git.StageAndCommitAll(*gitContext, "Removed service: "+serviceName)
}
func (s ServiceManager) establishServiceContext(project models.Project, stage models.Stage, service models.Service) (*common_models.GitContext, string, error) {
credentials, err := s.credentialReader.GetCredentials(project.ProjectName)
if err != nil {
return nil, "", fmt.Errorf(kerrors.ErrMsgCouldNotRetrieveCredentials, project.ProjectName, err)
}
auth, err := getAuthMethod(credentials)
if err != nil {
return nil, "", fmt.Errorf(kerrors.ErrMsgCouldNotEstablishAuthMethod, project.ProjectName, err)
}
gitContext := common_models.GitContext{
Project: project.ProjectName,
Credentials: credentials,
AuthMethod: *auth,
}
if !s.git.ProjectExists(gitContext) {
return nil, "", kerrors.ErrProjectNotFound
}
configPath, err := s.stageContext.Establish(common_models.ConfigurationContextParams{
Project: project,
Stage: &stage,
Service: &service,
GitContext: gitContext,
CheckConfigDirAvailable: false,
})
if err != nil {
return nil, "", fmt.Errorf("could not check out branch %s of project %s: %w", stage.StageName, project.ProjectName, err)
}
return &gitContext, configPath, nil
}
func (s ServiceManager) createService(gitContext *common_models.GitContext, serviceName, servicePath string) (string, error) {
if s.fileSystem.FileExists(servicePath) {
return "", kerrors.ErrServiceAlreadyExists
}
if err := s.fileSystem.MakeDir(servicePath); err != nil {
return "", fmt.Errorf("could not create directory for service %s: %w", serviceName, err)
}
newServiceMetadata := &common.ServiceMetadata{
ServiceName: serviceName,
CreationTimestamp: time.Now().UTC().String(),
}
metadataString, err := yaml.Marshal(newServiceMetadata)
if err = s.fileSystem.WriteFile(servicePath+"/metadata.yaml", metadataString); err != nil {
return "", fmt.Errorf("could not create metadata file for service %s: %w", serviceName, err)
}
return s.git.StageAndCommitAll(*gitContext, "Added service: "+serviceName)
}