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info.go
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/
info.go
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/*
Copyright (c) 2014 VMware, Inc. All Rights Reserved.
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 datastore
import (
"flag"
"fmt"
"io"
"os"
"text/tabwriter"
"github.com/apcera/libretto/Godeps/_workspace/src/github.com/vmware/govmomi/govc/cli"
"github.com/apcera/libretto/Godeps/_workspace/src/github.com/vmware/govmomi/govc/flags"
"github.com/apcera/libretto/Godeps/_workspace/src/github.com/vmware/govmomi/object"
"github.com/apcera/libretto/Godeps/_workspace/src/github.com/vmware/govmomi/property"
"github.com/apcera/libretto/Godeps/_workspace/src/github.com/vmware/govmomi/vim25/mo"
"github.com/apcera/libretto/Godeps/_workspace/src/github.com/vmware/govmomi/vim25/types"
"github.com/apcera/libretto/Godeps/_workspace/src/golang.org/x/net/context"
)
type info struct {
*flags.ClientFlag
*flags.OutputFlag
*flags.DatacenterFlag
}
func init() {
cli.Register("datastore.info", &info{})
}
func (cmd *info) Register(f *flag.FlagSet) {}
func (cmd *info) Process() error { return nil }
func (cmd *info) Usage() string {
return "[PATH]..."
}
func (cmd *info) Run(f *flag.FlagSet) error {
c, err := cmd.Client()
if err != nil {
return err
}
ctx := context.TODO()
finder, err := cmd.Finder()
if err != nil {
return err
}
args := f.Args()
if len(args) == 0 {
args = []string{"*"}
}
var res infoResult
var props []string
if cmd.OutputFlag.JSON {
props = nil // Load everything
} else {
props = []string{"info", "summary"} // Load summary
}
for _, arg := range args {
objects, err := finder.DatastoreList(ctx, arg)
if err != nil {
return err
}
res.objects = append(res.objects, objects...)
}
if len(res.objects) != 0 {
refs := make([]types.ManagedObjectReference, 0, len(res.objects))
for _, o := range res.objects {
refs = append(refs, o.Reference())
}
pc := property.DefaultCollector(c)
err = pc.Retrieve(ctx, refs, props, &res.Datastores)
if err != nil {
return err
}
}
return cmd.WriteResult(&res)
}
type infoResult struct {
Datastores []mo.Datastore
objects []*object.Datastore
}
func (r *infoResult) Write(w io.Writer) error {
// Maintain order via r.objects as Property collector does not always return results in order.
objects := make(map[types.ManagedObjectReference]mo.Datastore, len(r.Datastores))
for _, o := range r.Datastores {
objects[o.Reference()] = o
}
tw := tabwriter.NewWriter(os.Stdout, 2, 0, 2, ' ', 0)
for _, o := range r.objects {
ds := objects[o.Reference()]
s := ds.Summary
fmt.Fprintf(tw, "Name:\t%s\n", s.Name)
fmt.Fprintf(tw, " Path:\t%s\n", o.InventoryPath)
fmt.Fprintf(tw, " Type:\t%s\n", s.Type)
fmt.Fprintf(tw, " URL:\t%s\n", s.Url)
fmt.Fprintf(tw, " Capacity:\t%.1f GB\n", float64(s.Capacity)/(1<<30))
fmt.Fprintf(tw, " Free:\t%.1f GB\n", float64(s.FreeSpace)/(1<<30))
switch info := ds.Info.(type) {
case *types.NasDatastoreInfo:
fmt.Fprintf(tw, " Remote:\t%s:%s\n", info.Nas.RemoteHost, info.Nas.RemotePath)
}
}
return tw.Flush()
}