func WriteTable(items interface{}, columns []string, fields interface{}) error {
itemsValue := reflect.ValueOf(items)
if itemsValue.Kind() != reflect.Slice {
glog.Fatal("unexpected kind for items in WriteTable: ", itemsValue.Kind())
}
fieldsValue := reflect.ValueOf(fields)
if fieldsValue.Kind() != reflect.Slice {
glog.Fatal("unexpected kind for fields in WriteTable: ", fieldsValue.Kind())
}
length := itemsValue.Len()
var b bytes.Buffer
w := new(tabwriter.Writer)
// Format in tab-separated columns with a tab stop of 8.
w.Init(os.Stdout, 0, 8, 0, '\t', tabwriter.StripEscape)
writeHeader := true
if writeHeader {
for i, c := range columns {
if i != 0 {
b.WriteByte('\t')
}
b.WriteByte(tabwriter.Escape)
b.WriteString(c)
b.WriteByte(tabwriter.Escape)
}
b.WriteByte('\n')
_, err := w.Write(b.Bytes())
if err != nil {
return fmt.Errorf("error writing to output: %v", err)
}
b.Reset()
}
for i := 0; i < length; i++ {
item := itemsValue.Index(i)
for j := range columns {
if j != 0 {
b.WriteByte('\t')
}
fieldFunc := fieldsValue.Index(j)
var args []reflect.Value
args = append(args, item)
fvs := fieldFunc.Call(args)
fv := fvs[0]
s := fi.ValueAsString(fv)
b.WriteByte(tabwriter.Escape)
b.WriteString(s)
b.WriteByte(tabwriter.Escape)
}
b.WriteByte('\n')
_, err := w.Write(b.Bytes())
if err != nil {
return fmt.Errorf("error writing to output: %v", err)
}
b.Reset()
}
w.Flush()
return nil
}
func (c *DeleteClusterCmd) Run() error {
var stateStore fi.StateStore
var err error
var cloud fi.Cloud
clusterName := ""
region := ""
if c.External {
region = c.Region
if region == "" {
return fmt.Errorf("--region is required")
}
clusterName := rootCommand.clusterName
if clusterName == "" {
return fmt.Errorf("--name is required (when --external)")
}
tags := map[string]string{"KubernetesCluster": clusterName}
cloud, err = awsup.NewAWSCloud(c.Region, tags)
if err != nil {
return fmt.Errorf("error initializing AWS client: %v", err)
}
} else {
stateStore, err = rootCommand.StateStore()
if err != nil {
return err
}
cluster, _, err := api.ReadConfig(stateStore)
if err != nil {
return err
}
if rootCommand.clusterName != cluster.Name {
return fmt.Errorf("sanity check failed: cluster name mismatch")
}
clusterName = cluster.Name
cloud, err = cloudup.BuildCloud(cluster)
if err != nil {
return err
}
}
d := &kutil.DeleteCluster{}
d.ClusterName = clusterName
d.Region = region
d.Cloud = cloud
resources, err := d.ListResources()
if err != nil {
return err
}
if len(resources) == 0 {
fmt.Printf("Nothing to delete\n")
} else {
columns := []string{"TYPE", "ID", "NAME"}
fields := []string{"Type", "ID", "Name"}
var b bytes.Buffer
w := new(tabwriter.Writer)
// Format in tab-separated columns with a tab stop of 8.
w.Init(os.Stdout, 0, 8, 0, '\t', tabwriter.StripEscape)
writeHeader := true
if writeHeader {
for i, c := range columns {
if i != 0 {
b.WriteByte('\t')
}
b.WriteByte(tabwriter.Escape)
b.WriteString(c)
b.WriteByte(tabwriter.Escape)
}
b.WriteByte('\n')
_, err := w.Write(b.Bytes())
if err != nil {
return fmt.Errorf("error writing to output: %v", err)
}
b.Reset()
}
for _, t := range resources {
for i := range columns {
if i != 0 {
b.WriteByte('\t')
}
v := reflect.ValueOf(t)
if v.Kind() == reflect.Ptr {
v = v.Elem()
}
fv := v.FieldByName(fields[i])
s := fi.ValueAsString(fv)
b.WriteByte(tabwriter.Escape)
b.WriteString(s)
b.WriteByte(tabwriter.Escape)
}
b.WriteByte('\n')
_, err := w.Write(b.Bytes())
if err != nil {
return fmt.Errorf("error writing to output: %v", err)
}
b.Reset()
}
w.Flush()
if !c.Yes {
return fmt.Errorf("Must specify --yes to delete")
}
err := d.DeleteResources(resources)
if err != nil {
return err
}
}
if stateStore != nil {
if !c.Yes {
return fmt.Errorf("Must specify --yes to delete")
}
err := api.DeleteConfig(stateStore)
if err != nil {
return fmt.Errorf("error removing cluster from state store: %v", err)
}
}
fmt.Printf("\nCluster deleted\n")
return nil
}