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template_backups.go
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template_backups.go
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package cmd
import (
"fmt"
"os"
"github.com/spf13/cobra"
generator "github.com/uselagoon/build-deploy-tool/internal/generator"
"github.com/uselagoon/build-deploy-tool/internal/helpers"
backuptemplate "github.com/uselagoon/build-deploy-tool/internal/templating/backups"
"sigs.k8s.io/yaml"
)
type readReplicaValues struct {
ReadReplicaHosts string `json:"readReplicaHosts"`
}
var backupGeneration = &cobra.Command{
Use: "backup-schedule",
Aliases: []string{"schedule", "bs"},
Short: "Generate the backup schedule templates for a Lagoon build",
RunE: func(cmd *cobra.Command, args []string) error {
k8upVersion, err := cmd.Flags().GetString("version")
if err != nil {
return fmt.Errorf("error reading domain flag: %v", err)
}
generator, err := generator.GenerateInput(*rootCmd, true)
if err != nil {
return err
}
generator.BackupConfiguration.K8upVersion = k8upVersion
return BackupTemplateGeneration(generator)
},
}
// BackupTemplateGeneration .
func BackupTemplateGeneration(g generator.GeneratorInput,
) error {
lagoonBuild, err := generator.NewGenerator(
g,
)
if err != nil {
return err
}
savedTemplates := g.SavedTemplatesPath
// TODO: the dbaas consumers aren't known when the generator runs currently
// so this is a small helper function to collect this from the build stage
// this will eventually need to be collected directly by the generator or some other component
// of the generator in the future, but since backups are the only thing that need to know this at this stage
repServices := []generator.ServiceValues{}
for _, s := range lagoonBuild.BuildValues.Services {
rawYAML, err := os.ReadFile(fmt.Sprintf("/kubectl-build-deploy/%s-values.yaml", s.Name))
if err != nil {
repServices = append(repServices, s)
// skip this one
continue
}
dbaasValues := &readReplicaValues{}
err = yaml.Unmarshal(rawYAML, dbaasValues)
if err != nil {
return fmt.Errorf("couldn't read %v: %v", fmt.Sprintf("/kubectl-build-deploy/%s-values.yaml", s.Name), err)
}
if dbaasValues.ReadReplicaHosts != "" {
s.DBaasReadReplica = true
}
repServices = append(repServices, s)
}
lagoonBuild.BuildValues.Services = repServices
// generate the backup schedule templates
templateYAML, err := backuptemplate.GenerateBackupSchedule(*lagoonBuild.BuildValues)
if err != nil {
return fmt.Errorf("couldn't generate template: %v", err)
}
if len(templateYAML) > 0 {
helpers.WriteTemplateFile(fmt.Sprintf("%s/%s.yaml", savedTemplates, "k8up-lagoon-backup-schedule"), templateYAML)
}
// generate any prebackuppod templates
templateYAML, err = backuptemplate.GeneratePreBackupPod(*lagoonBuild.BuildValues)
if err != nil {
return fmt.Errorf("couldn't generate template: %v", err)
}
if len(templateYAML) > 0 {
helpers.WriteTemplateFile(fmt.Sprintf("%s/%s.yaml", savedTemplates, "prebackuppods"), templateYAML)
}
return nil
}
func init() {
templateCmd.AddCommand(backupGeneration)
backupGeneration.Flags().StringP("version", "", "v1", "The version of k8up used.")
}