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runner.go
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runner.go
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package nodepools
import (
"context"
"fmt"
"io"
"strings"
"github.com/giantswarm/microerror"
"github.com/giantswarm/micrologger"
"github.com/spf13/afero"
"github.com/spf13/cobra"
metav1 "k8s.io/apimachinery/pkg/apis/meta/v1"
"github.com/giantswarm/kubectl-gs/pkg/commonconfig"
"github.com/giantswarm/kubectl-gs/pkg/data/domain/nodepool"
"github.com/giantswarm/kubectl-gs/pkg/output"
)
type runner struct {
flag *flag
logger micrologger.Logger
fs afero.Fs
provider string
service nodepool.Interface
stdout io.Writer
stderr io.Writer
}
func (r *runner) Run(cmd *cobra.Command, args []string) error {
ctx := context.Background()
err := r.flag.Validate()
if err != nil {
return microerror.Mask(err)
}
err = r.run(ctx, cmd, args)
if err != nil {
return microerror.Mask(err)
}
return nil
}
func (r *runner) run(ctx context.Context, cmd *cobra.Command, args []string) error {
var err error
config := commonconfig.New(r.flag.config)
{
if r.provider == "" {
r.provider, err = config.GetProvider()
if err != nil {
return microerror.Mask(err)
}
}
err = r.getService(config)
if err != nil {
return microerror.Mask(err)
}
}
var resource nodepool.Resource
{
options := nodepool.GetOptions{
Provider: r.provider,
ClusterName: r.flag.ClusterName,
}
{
if len(args) > 0 {
options.Name = strings.ToLower(args[0])
}
if r.flag.AllNamespaces {
options.Namespace = metav1.NamespaceAll
} else {
options.Namespace, _, err = r.flag.config.ToRawKubeConfigLoader().Namespace()
if err != nil {
return microerror.Mask(err)
}
}
}
resource, err = r.service.Get(ctx, options)
if nodepool.IsNotFound(err) {
return microerror.Maskf(notFoundError, fmt.Sprintf("A node pool with name '%s' cannot be found.\n", options.Name))
} else if nodepool.IsNoResources(err) && output.IsOutputDefault(r.flag.print.OutputFormat) {
r.printNoResourcesOutput()
return nil
} else if err != nil {
return microerror.Mask(err)
}
}
err = r.printOutput(resource)
if err != nil {
return microerror.Mask(err)
}
return nil
}
func (r *runner) getService(config *commonconfig.CommonConfig) error {
if r.service != nil {
return nil
}
client, err := config.GetClient(r.logger)
if err != nil {
return microerror.Mask(err)
}
serviceConfig := nodepool.Config{
Client: client,
}
r.service, err = nodepool.New(serviceConfig)
if err != nil {
return microerror.Mask(err)
}
return nil
}