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migrate.go
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migrate.go
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// Copyright 2019 The Operator-SDK Authors
//
// 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 cmd
import (
"fmt"
"os"
"path/filepath"
"github.com/operator-framework/operator-sdk/internal/util/projutil"
"github.com/operator-framework/operator-sdk/pkg/scaffold"
"github.com/operator-framework/operator-sdk/pkg/scaffold/ansible"
"github.com/operator-framework/operator-sdk/pkg/scaffold/helm"
"github.com/operator-framework/operator-sdk/pkg/scaffold/input"
log "github.com/sirupsen/logrus"
"github.com/spf13/cobra"
)
// NewMigrateCmd returns a command that will add source code to an existing non-go operator
func NewMigrateCmd() *cobra.Command {
return &cobra.Command{
Use: "migrate",
Short: "Adds source code to an operator",
Long: `operator-sdk migrate adds a main.go source file and any associated source files for an operator that is not of the "go" type.`,
RunE: migrateRun,
}
}
// migrateRun determines the current operator type and runs the corresponding
// migrate function.
func migrateRun(cmd *cobra.Command, args []string) error {
projutil.MustInProjectRoot()
_ = projutil.CheckAndGetProjectGoPkg()
opType := projutil.GetOperatorType()
switch opType {
case projutil.OperatorTypeAnsible:
return migrateAnsible()
case projutil.OperatorTypeHelm:
return migrateHelm()
}
return fmt.Errorf("operator of type %s cannot be migrated", opType)
}
// migrateAnsible runs the migration process for an ansible-based operator
func migrateAnsible() error {
wd := projutil.MustGetwd()
cfg := &input.Config{
AbsProjectPath: wd,
ProjectName: filepath.Base(wd),
}
dockerfile := ansible.DockerfileHybrid{
Watches: true,
Roles: true,
}
_, err := os.Stat(ansible.PlaybookYamlFile)
switch {
case err == nil:
dockerfile.Playbook = true
case os.IsNotExist(err):
log.Info("No playbook was found, so not including it in the new Dockerfile")
default:
return fmt.Errorf("error trying to stat %s: (%v)", ansible.PlaybookYamlFile, err)
}
if err := renameDockerfile(); err != nil {
return err
}
s := &scaffold.Scaffold{}
err = s.Execute(cfg,
&ansible.Main{},
&ansible.GopkgToml{},
&dockerfile,
&ansible.Entrypoint{},
&ansible.UserSetup{},
&ansible.K8sStatus{},
&ansible.AoLogs{},
)
if err != nil {
return fmt.Errorf("migrate ansible scaffold failed: (%v)", err)
}
return nil
}
// migrateHelm runs the migration process for a helm-based operator
func migrateHelm() error {
wd := projutil.MustGetwd()
cfg := &input.Config{
AbsProjectPath: wd,
ProjectName: filepath.Base(wd),
}
if err := renameDockerfile(); err != nil {
return err
}
s := &scaffold.Scaffold{}
err := s.Execute(cfg,
&helm.Main{},
&helm.GopkgToml{},
&helm.DockerfileHybrid{
Watches: true,
HelmCharts: true,
},
&helm.Entrypoint{},
&helm.UserSetup{},
)
if err != nil {
return fmt.Errorf("migrate helm scaffold failed: (%v)", err)
}
return nil
}
func renameDockerfile() error {
dockerfilePath := filepath.Join(scaffold.BuildDir, scaffold.DockerfileFile)
newDockerfilePath := dockerfilePath + ".sdkold"
err := os.Rename(dockerfilePath, newDockerfilePath)
if err != nil {
return fmt.Errorf("failed to rename Dockerfile: (%v)", err)
}
log.Infof("Renamed Dockerfile to %s and replaced with newer version. Compare the new Dockerfile to your old one and manually migrate any customizations", newDockerfilePath)
return nil
}