/
appexporter.go
127 lines (103 loc) · 3.76 KB
/
appexporter.go
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package app
import (
"log"
"os"
"path/filepath"
"strings"
"github.com/RHEcosystemAppEng/SaaSi/exporter/pkg/config"
"github.com/RHEcosystemAppEng/SaaSi/exporter/pkg/connect"
"github.com/konveyor/crane/cmd/apply"
"github.com/konveyor/crane/cmd/export"
"github.com/konveyor/crane/cmd/transform"
"k8s.io/cli-runtime/pkg/genericclioptions"
)
type AppExporter struct {
appContext *AppContext
}
func NewAppExporterFromConfig(config *config.Config, connectionStatus *connect.ConnectionStatus) *AppExporter {
exporter := AppExporter{appContext: NewAppContextFromConfig(config, connectionStatus)}
return &exporter
}
func (e *AppExporter) Export() {
clusterRolesInspector := NewClusterRolesInspector(e.appContext)
clusterRolesInspector.LoadClusterRoles()
e.PrepareOutput()
e.ExportWithCrane()
parametrizer := NewParametrizerFromConfig(e.appContext)
parametrizer.ExposeParameters()
installer := NewInstallerFromConfig(e.appContext, clusterRolesInspector)
installer.BuildKustomizeInstaller()
}
func (e *AppExporter) PrepareOutput() {
if _, err := os.Stat(e.appContext.AppFolder); !os.IsNotExist(err) {
log.Printf("Directory exists %v", e.appContext.AppFolder)
os.RemoveAll(e.appContext.AppFolder)
}
if err := os.MkdirAll(e.appContext.AppFolder, os.ModePerm); err != nil {
log.Fatalf("Cannot create %v folder: %v", e.appContext.AppFolder, err)
}
log.Printf("Created output folder %s", e.appContext.AppFolder)
for _, ns := range e.appContext.AppConfig.Namespaces {
nsFolder := filepath.Join(e.appContext.AppFolder, ns.Name)
if err := os.Mkdir(nsFolder, os.ModePerm); err != nil {
log.Fatalf("Cannot create %v folder: %v", nsFolder, err)
}
log.Printf("Created output folder %s", nsFolder)
}
}
func (e *AppExporter) ExportWithCrane() {
for _, ns := range e.appContext.AppConfig.Namespaces {
nsFolder := filepath.Join(e.appContext.AppFolder, ns.Name)
log.Printf("Exporting NS %s with crane", nsFolder)
exportFolder := e.appContext.ExportFolderForNS(ns.Name)
transformFolder := e.appContext.TransformFolderForNS(ns.Name)
outputFolder := e.appContext.OutputFolderForNS(ns.Name)
doExport(e.appContext.KubeConfigPath(), ns.Name, exportFolder)
doTransform(exportFolder, transformFolder)
doApply(exportFolder, transformFolder, outputFolder)
}
}
func doExport(kubeConfigPath string, namespace string, exportFolder string) {
exportCmd := export.NewExportCommand(genericclioptions.IOStreams{
In: strings.NewReader(""),
Out: os.Stdout,
ErrOut: os.Stderr,
}, nil)
exportNamespace := exportCmd.Flags().Lookup("namespace")
exportNamespace.Value.Set(namespace)
exportDir := exportCmd.Flags().Lookup("export-dir")
exportDir.Value.Set(exportFolder)
kubeconfig := exportCmd.Flags().Lookup("kubeconfig")
kubeconfig.Value.Set(kubeConfigPath)
exportCmd.SetArgs([]string{})
_, err := exportCmd.ExecuteC()
if err != nil {
log.Fatalf(err.Error())
}
}
func doTransform(exportFolder string, transformFolder string) {
transformCmd := transform.NewTransformCommand(nil)
exportDir := transformCmd.Flags().Lookup("export-dir")
exportDir.Value.Set(exportFolder)
transformDir := transformCmd.Flags().Lookup("transform-dir")
transformDir.Value.Set(transformFolder)
transformCmd.SetArgs([]string{})
_, err := transformCmd.ExecuteC()
if err != nil {
log.Fatalf(err.Error())
}
}
func doApply(exportFolder string, transformFolder string, outputFolder string) {
applyCmd := apply.NewApplyCommand(nil)
exportDir := applyCmd.Flags().Lookup("export-dir")
exportDir.Value.Set(exportFolder)
transformDir := applyCmd.Flags().Lookup("transform-dir")
transformDir.Value.Set(transformFolder)
outputDir := applyCmd.Flags().Lookup("output-dir")
outputDir.Value.Set(outputFolder)
applyCmd.SetArgs([]string{})
_, err := applyCmd.ExecuteC()
if err != nil {
log.Fatalf(err.Error())
}
}